CN104755694A - Stabilizer device for bottom hole assembly - Google Patents
Stabilizer device for bottom hole assembly Download PDFInfo
- Publication number
- CN104755694A CN104755694A CN201380057033.3A CN201380057033A CN104755694A CN 104755694 A CN104755694 A CN 104755694A CN 201380057033 A CN201380057033 A CN 201380057033A CN 104755694 A CN104755694 A CN 104755694A
- Authority
- CN
- China
- Prior art keywords
- stabilizer
- curvature
- radius
- protuberance
- bossing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Abstract
A stabilizer device (20, 120, 220) for a drill stem, in particular for a bottom hole assembly, which is rotatable about a longitudinal axis (X), the device comprising a tubular central body (21) and connection means (22, 23) at its axial ends for connecting to elements of the stem, the device being provided with a helical protrusion (24, 25, 26) on the surface of the body intended to come into contact with a wall of the drilled hole, said helical protrusion turning in the clockwise direction (W) about the axis of the central body viewed from an upstream axial end in the direction of a downstream axial end, characterized in that a crest (33, 33', 33") of the helical protrusion comprises a leading edge (35, 35' and 35") and a trailing edge (36, 36' and 36") defined in the direction of rotation, the leading edge comprising a convex portion such that a first portion (38) of said convex portion has a radius of curvature of more than 3.5 mm over an angular arc of at least 20DEG.
Description
Technical field
The present invention relates in general to a kind of stabilizer for bottom hole assembly.In the field in exploration and research oil field, use by pipeline and the branch line of rotation drilling pipe branch line that may be made up of other tube elements, described branch line end-to-end link, required by drilling conditions.Drilling pipe branch line is a part for drilling rod, and the task of described drilling rod gets out well and described drilling rod is made up of the much equipment for drilling.Described pipe branch line is connected to bottom hole assembly; They form drilling rod together.
Background technology
Drilling rod bears many loads, the rotation such as applied by ground installation and translational motion, vibration that bottom outlet instrument produces and the power that applies between the borehole wall and the parts of bar with contact; Well length can be greater than 12km.
Bottom hole assembly can be made up of following partial continuous from the drill bit as the element near shaft bottom: drill bit, comprise any parts, jumping through rings, the equipment being called MWD and LWD, stabilizer arrangement and heavyweight drilling pipe branch line for driving the motor of drill bit.
Especially, in drilling rod, the multiple positions between drill bit and heavyweight pipeline are needed to stablize bottom hole assembly.Stabilizer for controlling the distortion of bottom hole assembly, particularly by being provided for the bending default fixed point of bottom outlet pipeline and drill bit.Stabilizer also helps the vibration in limiter tube branch line, and variant part is controlled the element departed from for contributing to controlling desired trajectory by it.
The present invention also can be applied to the parts for measuring or at the bottom of manhole, and such as known in the state of the art is the equipment of term MWB, LWD or even RSS.
Usually, in order to allow probing, pressurized mud skims over the drill bit of the end of this branch line being arranged in drilling pipe branch line in a branch line inside of drilling pipe branch line with the flow of upon mediation, and be pumped subsequently and rise in the annular space limited between bar or hole wall.
Various stabilizer instrument known in the state of the art, such as manufactured by applicant those.Especially, document US-4275935, US-6202769 and US-2010-0300760 disclose the stabilizer being provided with external helicoid protuberance, and described protuberance is attached to tubular body or becomes overall with described body.
The instruction of document US-2010-0300760 further discloses one group of tubulose bottom outlet drill elements, and described drill elements comprises the hole former be arranged between drill bit and three upstream stabilizers, with the stability of the direction controlling and drill bit that improve track.
Summary of the invention
The object of the invention is the consolidation improving hole wall, reduce the friction factor with these walls simultaneously.In fact, during the formation in hole due to be pulled off the formation forming fragment corresponding to empty material.This fragment by promoting away it and being cut out together with drilling mud.Proof it is highly important that, promotes the size characteristic that this fragment does not change the hole be just formed.
Further, due to the shorter application life of bottom, hole drill bit, having 4 to when being greater than the well of 10km length when drilling, drill rod assemblies must be promoted regularly, can change or keep in repair drill bit and again declined by whole drilling rod subsequently, be formed in advance a bit to make hole.Only to rise with these of analysis purpose and the operation (be called and trip out and put into) of decline branch line causes friction load on hole wall to safeguard, and also make the main contributions of the quality degradation homogeneity (homogeneous) of diameter (in the length in hole in) of hole pairs, risk of rupture, and cause the risk of the disturbance region in mud deceleration and enlarged region, and therefore there is main contributions to rubble accumulation.More generally, these operations, although necessary, contribute to the reduction in hole, and therefore contribute to increasing the risk that gets clogged in hole of branch line.
When close to shaft bottom, this problem becomes more and more crucial, at shaft bottom place, and the diameter of the diameter in hole closely bottom hole assembly.
Target of the present invention proposes a kind of technical scheme, and it is limited in the infringement tripped out and to hole wall during putting into operation especially, allows the appropriate circulation of mud simultaneously.
The invention provides a kind of stabilizer arrangement for drilling rod, bottom hole assembly especially for rotating around longitudinal axis, this device comprise tubular central body and at the axial end portion place of central body for being connected to the interface unit of the element of bar, this device is provided with spiral protuberance, described protuberance is positioned on the surface of body, intention contacts with the wall in drilled hole, look in direction from upstream axial end portion along downstream axial end, described spiral protuberance rotates along clockwise direction around the axis of central body, it is characterized in that, the apex of spiral protuberance comprises the leading edge (leading edge) and trailing edge (trailing edge) that limit along direction of rotation, leading edge comprises bossing, the Part I of described bossing is made to have the radius of curvature being greater than 3.5mm in the angular arc portion of at least 20 °.
Term " spiral protuberance " is meant to have the shape of roughly spiral wrapping section.
Exemplarily, this Part I of bossing can have the radius of curvature being greater than 5mm in the angular arc portion of at least 30 °.
The present invention can be used for improving the geometry between the borehole wall and the protuberance of stabilizer and mechanical attachment, particularly by the dynamic impulsion of restriction as the main cause of side direction and twisting vibration, and also by improving the homogeneity of the cross section profile in the hole be just formed.The present invention can also for obtaining the fluid bearing at the level place at stabilizer arrangement.
The very special shape of leading edge provides the activity (activated) of drilling mud to circulate, and provides the not too invasive profile of the wall about the hole be just formed simultaneously.Such size Selection means the insertion that can be limited in for drilling branch line or the expansion in hole during removing operation.Obtain in the rotary course of this advantage also during drilling.
Advantageously, described bossing can also be composite part (complex) and comprise at least one second bossing adjacent to Part I, the radius of curvature that described Part II has is less than the radius of curvature of Part I, before described Part II is positioned at Part I along direction of rotation.
Exemplarily, described bossing can extend and comprise Part III in the angular arc portion being less than 180 °, Part II is arranged between first and Part III, and the radius of curvature that described Part III is had is greater than the radius of curvature of Part I.Such configuration means, can be provided for the larger cross section of the motion of drilling mud, improve the contact of bar, centering and guiding simultaneously.
Especially, multiple sections of described bossing can tangentially link.Such configuration improves the dynamic performance of the drilling mud risen, and flowing is homogeneous along bossing.
Advantageously, the apex of spiral protuberance can form circular arc, and described circular arc tangentially links to the bossing of leading edge.In like fashion, the edge can tearing hole wall to shreds is not had to be formed.Similarly, the apex of spiral protuberance can form circular arc, and described circular arc tangentially links to the bossing of trailing edge.
Especially, circular arc can have a diameter, the theoretical diameter of this diameter as the hole drilled at shaft bottom place or the function at the external diameter of shaft bottom place drill bit and determine; Especially, this diameter is determined by described theoretical diameter is deducted the value of at least 1/64 inch (i.e. 0.4mm).The selection of this size can be used for by allowing the slight deflection play at stabilizer arrangement place and consolidates hole wall.
Leading edge can also comprise the second bossing, makes the apex of spiral protuberance form the circular arc tangentially linking to this second bossing.
Preferably, device can comprise a material, and this material covers apex and of covering at least in part in leading edge and trailing edge, makes the hardness of the hardness wall spiral protuberance of this material much bigger.There is such material to mean, the wearing and tearing being exposed to the rock against the wall in the hole be just formed and the part of the protuberance contacted most can be limited, and therefore can limit the quantity of the attended operation on bottom outlet element.
In a particular embodiment, holding part can be formed in the apex place of spiral protuberance, to keep the roller rotated freely.The invention still further relates to " roller reamer " classification, that is, be provided with and be generally used for regularization and calibrate the blade of the borehole wall and the instrument of roller.
Especially, spiral protuberance can form radial foot, this radial foot has the minimum widith measured perpendicular to bisector (bisecting line), and this minimum widith is less than than the Breadth Maximum of minimum widith closer to the described foot of apex.Such configuration can be used for increasing the available cross-section for drilling mud circulation, the quality of the contact simultaneously between retaining hole and described stabilizer.
Advantageously, this device can comprise recessed region between leading edge and adjacent rear edges.Preferably, each recessed region can comprise the first recess tangentially linking to leading edge, and the radius of curvature that described first recess has is less than the radius of curvature of the second recess tangentially linking to adjacent rear edges.Therefore mainly make drilling mud stream more in trailing edges circulation at leading edge lower wall.Therefore the acceleration of trailing edge can be modified, and is quickly removed to allow probing fragment.
Exemplarily, recessed region can limit the profile of the outer perimeter being tangential to tubular body.Such configuration means that central body is not weakened.Alternatively, recessed region can orientate the outer perimeter not reaching tubular body as, with the cross section of the passage of the slurry flows between increasing for protuberance.
Especially, spiral protuberance can be spaced apart by development distance, makes two adjacent protrusions being less than overlap in a turn, or be even less than half way around, such as, from 1/4th turns.
Preferably, spiral protuberance turns over around body and is less than one turn, turns over half way around in particular.This configuration means, axially limits the existence of described one or more protuberance, makes protuberance be configured for the equivalents of the flex point of the remainder drilling branch line with the contact point of the wall in the hole be just formed.Advantageously, such configuration can be used for the setting size in improvement hole and prevents it extended.
Preferably, this device the whole length being less than 120 inches axially between end can comprise protuberance.
Advantageously, spiral protuberance can be placed in the middle between two of a device axial end portion.Such configuration means, the bending force that can be applied to device can distribute in a balanced fashion.Also can accept other non-configurations between two parties.
In another embodiment, downstream axial end can be directly a part for drill bit (configuration of " nearly drill bit " stabilizer), or in change case, adjacent and be screwed on drill bit.In such an arrangement, stabilizer arrangement is directly integrated in drill bit; Especially, it is arranged in the downstream of electric rotating machine, is arranged in the region being commonly referred to bit gauge.
In change case, tubular body can form fixing wrapping section, and it screws around the tubular part with described interface unit and is screwed on it.In this case, the present invention can be used for the element being called stabilizer sleeve.
In another change case, spiral protuberance and tubular body can manufacture in an integral manner.
Preferably, this device by steel making, such as, from corresponding to the steel making of following standard: AISI 4135; AISI 4137; AISI 4140; And/or AISI 4145.Steel can be nonmagnetic (amagnetic) especially.
In a particular embodiment, central body can have hole, makes the minimum thickness of the wall of this central body be rendered as larger than the external diameter of this body 25%.Such configuration increases the steadiness of the entirety of device.
Accompanying drawing explanation
The present invention by from provide by non-limiting example below reading with the detailed description of the several embodiments shown in accompanying drawing and being better understood, in the accompanying drawings:
Fig. 1 illustrates the embodiment of the bottom hole assembly of conventional drill rod, and this drilling rod is in the hole formed;
Fig. 2 roughly illustrates the phenomenon of being caved in by the part of the wall of drilling bore hole;
Fig. 3 is the phantom drawing of the first embodiment of stabilizer of the present invention;
Fig. 4 is the longitudinal view for the manufacture of the blank needed for production according to Fig. 3;
Fig. 5 is longitudinal view of Fig. 3;
Fig. 6 is the viewgraph of cross-section of the cutting plane A-A indicated in Fig. 5;
Fig. 7 is the partial cross-sectional view of the amplification of Fig. 6;
Fig. 8 is the viewgraph of cross-section of the cutting plane B-B indicated in Fig. 5;
Fig. 9 is the expansion view of the spire formed by the protuberance of device of the present invention;
Figure 10 is the distal view of the downstream projecting ends of device of the present invention;
Figure 11 is the fragmentary top outline drawing of the stabilizer arrangement according to change case of the present invention;
Figure 12 is the viewgraph of cross-section of the cutting plane C-C indicated in Figure 11;
Figure 13 is the viewgraph of cross-section of the cutting plane D-D indicated in Figure 11;
Figure 14 is the change case of the embodiment of Figure 13;
Figure 15 is the outline perspective view of the stabilizer arrangement according to another change case of the present invention;
Figure 16 is the viewgraph of cross-section of the cutting plane E-E of Figure 15.
Detailed description of the invention
Fig. 1 illustrates the embodiment of bottom hole assembly 1.This assembly 1 comprises multiple end-to-end tubular part be associated, and form the bottom hole assembly of drill bit 2 upstream, described drill bit is arranged in an axial end portion place of described bar.Due to probing reason, this assembly 1, to be driven in rotation clockwise, thinks the direction of the downstream end formed from upstream end thereof along drill bit.In drilling technique, direction of rotation is always determined from the surface relative to shaft bottom.
Drill bit comprises intention and digs out the motorization distal portion 3 in hole and support the upstream portion 4 of this motorization end 3.Upstream portion 4 is sometimes referred to as bit gauge (gauge).In the example shown, upstream portion is smooth.
Upstream portion 4 is connected to the first tubular part 5 by assembling (makeup) subsequently, and described tubular part 5 is connected to stabilizer arrangement 6 of the present invention by assembling in upstream.This stabilizer arrangement 6 is filled to shaft bottom measurement mechanism 7 in upstream group.This shaft bottom measurement mechanism 7 can comprise multiple tubular sections, the end-to-end assembling of described tubular sections, to implement the multiple measurement and detection at shaft bottom place.This measurement mechanism 7 also can comprise the rotatable steering device (RSS) for drill bit 2.
This measurement mechanism 7 is connected to the second stabilizer arrangement 8 of the present invention in upstream, this second stabilizer arrangement 8 structurally can be different from the first stabilizer arrangement 6.Preferably, the second stabilizer arrangement 8 is connected to thick-walled pipe linear element in downstream and upstream, is called jumping through rings.
Second stabilizer arrangement 8 is connected to truing tool 9 in upstream, and described truing tool 9 is provided with blade or roller, and described blade or roller rotate freely at Qi Bishang and be intended to contact with hole wall.In the example shown, truing tool has adjustable diameter.Alternatively, in the position of this truing tool 9, can arrange roller reamer, its external diameter can not adjust, but it can form the tri-stabilizer device with rotatable roller, as below by detailed description.
This truing tool 9 is connected to according to the 4th stabilizer arrangement 10 of the present invention in upstream, ask compared with electric installation with aforementioned arrangement in downstream, they can be different in shape, structure and/or size.4th stabilizer arrangement 10 is connected to the group 11 of multiple tubular part, and this group 11 comprises slide unit 12 especially, and this slide unit 12 can axially expand on demand, such as, in order to not block bottom hole assembly.This slide unit 12 is commonly referred to halves (ajar).
This group 11 was assembled with one or more heavy pipe 13 before being connected to the probing branch line formed primarily of drilling pipe, and described heavy pipe 13 is commonly referred to heavyweight drilling pipe.
As what can see from this total description, multiple position can be arranged in bottom hole assembly 1 according to stabilizer arrangement of the present invention, and there is mutually different shapes, structure and/or size.
These stabilizer arrangements, at least along they longitudinal axis partly, there is the diameter close to the external diameter in hole that is just being formed or the external diameter of probing.Their task is that holding tube branch line and bottom hole assembly are stable in hole, simultaneously drill bit with to be born very strong vibration by the contact of rock that hollows out, holding tube branch line rotates in hole simultaneously.In addition, these stabilizer arrangements contribute to improving drill bit and will controlled by the directionality in the rock group that hollows out, to arrive subsequently by by the rock containing hydrocarbon of operation.
Fig. 2 shows classical probing problem.Have different hardness and even not isostructural geo-logical terrain because passed through, Different Strata can be passed in the hole be just formed.The quality of hole wall and their continuity are for carrying out controlling during drill bit to control the slurry flows that rises completely and also to prevent probing branch line to be blocked in very important parameter original position.
Fig. 2 illustrates the example that the part of the wall in the hole be just formed in frangible region 14 is caved in.The present invention can be used for the weakening and the erosion that limit hole wall.These rocks fallen down 15 with irregular size fall to shaft bottom, and have and damage the risk of drill bit itself, when its be not designed to by the crushing of the rock fallen down of the type to have to during those the similar size block produced during drilling even more very.As seen in this Fig. 2, really need the wall in the hole considering just be formed not damage them and consider that restriction can promote the vibration of the rock fallen down.
Fig. 3 illustrates the first embodiment of stabilizer 20 of the present invention.Stabilizer arrangement 20 comprises the tubular central body 21 with longitudinal axis X, and these axial end portion places are provided with threaded section, is respectively 22 and 23, with other elements making it be connected to bottom hole assembly.In the example shown, end 22 comprises the protrusion connector with visible screw thread, and the other end 23 has recessed connector, and its screw thread (not shown) is positioned in the inner perimeter of this end.
The outer perimeter of central body 21 is roughly regular circle shapes in transverse to the cross section of axis X.Extend beyond the position of the outer perimeter of central body 21 at three radial spiral protuberances 24,25,26, device 20 has encapsulating surface partly, and the diameter that its cross section has is greater than the diameter of central body 21.These radial protuberances are commonly referred to blade.
Three protuberances rotate around axis X.In the example shown, they each turn over half way around around axis X.The corresponding starting point of each of these spiral protuberances distributes regularly around the circumference of central body 21.
Suppose that protruding (male) connector can form the downstream connector of this device relative to probing branch line, can consider that spiral protuberance rotates along clockwise direction, be considered as the direction along downstream end from upstream end thereof.These protuberances along with the direction of rotation W of pipe branch line and the identical direction of the direction of rotation of the bottom hole assembly therefore in hole rotate.
Tubular blank E, as shown in Figure 4 all, be used as the starting point manufacturing stabilizer arrangement 20.This tubular blank E is preferably fabricated to single-piece with single material, and it is processed with configuration sized subsequently.In practice, this blank E has comprised central body 21, in its end, will process corresponding protrusion connector 22 and recessed connector 23.Blank E comprises mid portion 27, and this mid portion 27 roughly has equidistance apart from its axial end portion 22 and 23.Distance between end 22 and 23 such as 120 inches or less.Mid portion 27 forms a tubular portion, and its external diameter had is greater than the external diameter of the remainder of central body.
Especially, the interior diameter of the hole of blank E can be constant over the whole length.Exemplarily, the thickness of the wall of such stabilizer arrangement 20 is selected as the external diameter making it present many 25%, that is, diameter OD1 and/or diameter OD2.
Diameter change between the diameter OD1 of the central body 21 and diameter OD2 of mid portion 27 is roughly symmetrical in the both sides of mid portion 27 in this example.In unshowned change case, the change of upstream and downstream diameter can be asymmetrical.
Especially, this expansion section 32 comprises () from diameter OD1 continuously:
-the recess 28 that opens, has the radius of curvature R 1 in the scope of 50 to 300mm, the amount rank of such as 85mm;
-be then the planar section 29 opened, measure at 100mm in the distance on rank, there is relative to axis X the gradient on such as 45 ° of amount rank;
-be then protruding first slug portion 30, there is the radius of curvature R 2 in the scope of 50 to 300mm, the amount rank of such as 80mm;
-be then the second protruding slug portion 31, have the radius of curvature R 3 in the scope of 50 to 300mm, this radius of curvature R 3 is greater than radius of curvature R 2, the amount rank of such as 130mm;
-this second protruding slug portion 31 is connected to the outer perimeter with external diameter OD2.
In the example shown, each part of expansion section 32 tangentially links relative to the next one.Similarly, central body 21 tangentially links to the recess 28 opened.In addition, protruding slug portion 31 tangentially links to the outer perimeter of mid portion 27.
This gradual change of expansion section 32 contributes to the contact between softening protuberance 24,25 and 26 and the wall in just drilled hole.This prevents to the infiltration in hole wall or scraping.This gradual change is retained in and starts and terminate in the end of each protuberance 24,25 and 26.In fact, as seen in Figure 5, protuberance 24,25 and 26 is formed in the thickness of these expansion sections 32 and in mid portion 27.Therefore, in the advance of probing branch line and/or when withdrawing, the protuberance of stabilizer arrangement of the present invention enters and contacts with the progressive of hole wall, and no longer hollows out hole wall compared with carrying out.
The viewgraph of cross-section of Fig. 6 and 7 provides the better understanding of the size of the protuberance processed in blank E.
As seen in figure 6, protuberance 24,25 and 26 angularly distributes at the apex place of equilateral triangle; Show its bisector B, B ' and B ".Three protuberances in shape can be overlapping.Each protuberance 24,25 and 26 has apex 33,33 ' and 33 respectively ", non-processing part that is that described apex forms mid portion 27 or expansion section 32.Each apex 33,33 ' and 33 " cover when it is formed in mid portion 27 32 ° amount rank angular arc portion 34, preferably at 20 ° within the scope of 60 °.When this angular arc portion 34 is evaluated in expansion section 32, it is identical or less.Each apex 33,33 ' and 33 " preferably bisector bilateral symmetry distribute, described apex is intersected with described bisector, is respectively B, B ' and B ".Alternatively, apex can distribute with asymmetric manner in the both sides of bisector respectively.
In operation, when probing branch line advances in hole, stabilizer arrangement 20 along clockwise direction W is driven in rotation.Each protuberance 24,25,26 has respectively relative to this clockwise leading edge 35,35 ' and 35 " and trailing edge 36,36 ' and 36 ".Leading edge is the edge first contacted with hole wall, and next trailing edge will contact.
Leading edge 35,35 ' and 35 " and trailing edge 36,36 ' and 36 " each comprises bossing.In the example shown, leading edge and trailing edge are only made up of described bossing.Leading edge forms compound bossing, and it generally can not be overlapping, also the not protruding partial symmetry with the compound be made up of trailing edge.Alternatively, leading edge can be designed to trailing edge symmetrical.In this example, leading edge 35,35 ' and 35 " can be overlapped.Similarly, trailing edge 36,36 ' and 36 " can be overlapped.
Especially, leading edge 35 links to trailing edge 36 via the first recessed region 37 ".Similarly, leading edge 35 ' links to trailing edge 36 via the second recessed region 37 '.Further, leading edge 35 " via the 3rd recessed region 37 " link to trailing edge 36 '.Leading edge 35, with a part for recessed region 37, apex 33, trailing edge 36, together with a part for recessed region 37 ', form the radial foot relative to central body 21.Especially, the base portion of the blade on body or foot have minimum widith Lmin at the non-zero distance place apart from apex, and this minimum widith Lmin is evaluated perpendicular to bisector B.Especially, foot comprises Breadth Maximum Lmax, its position between apex and minimum widith Lmin.The position of minimum widith Lmin is positioned at part tangent with the outer perimeter of central body 21, or along the direction of apex 33 only slight beyond this outer perimeter.
In detail, Fig. 7 illustrates trailing edge 36 " and the enlarged drawing of leading edge 35 of the first recessed region 37.
Leading edge is such as made up of three bossings 38,39 and 40 in succession.These parts 38,39 and 40 tangentially link.Part II is arranged between first and Part III.Part I 38 tangentially links to the apex 33 with radius of curvature OD2.
Be 311.15mm (12 at diameter OD2
1/
4inch) when, then, the radius of curvature of Part I 38 is the amount rank of 39mm, and extends along the angular arc portion on 30 ° of amount rank.
Following form illustrates feasible size Selection, and described size is the function of the diameter in drilled hole, and is therefore the function of the maximum gauge OD2 observed at the apex place of stabilizer arrangement 20.
Adjacent to Part I 38, the radius of curvature that Part II 39 has is less than the radius of curvature of Part I.It also covers the angular arc portion being less than Part I.Especially, be 12 for described diameter OD2
1/
4the embodiment of inch, the radius of curvature of 25mm is used for this Part II and the angular arc portion for 15 ° of amount rank.
Adjacent to Part II 39, the radius of curvature that Part III 40 has is greater than the radius of curvature of Part I also also higher than the radius of curvature of Part II.The angular arc portion that this Part III 40 covers is greater than the angular arc portion of Part II but is less than the angular arc portion of Part I.Especially, be 12 for described diameter OD2
1/
4the embodiment of inch, the radius of curvature of 46mm is used for this Part III 40 and the angular arc portion for 20 ° of amount rank.
Advantageously, the group of three parts 38,39 and 40, the i.e. compound bossing 35 of leading edge 38, defined by single bossing, this single bossing covers and is greater than the angular arc portion that 90 ° are less than 180 °, and the radius of curvature that the single bossing that this is defined has equals to form in the independent radius of curvature of its each part maximum.
In the example in figure 7, trailing edge 36 " be such as made up of two recesses 41 and 42 in succession, to form compound recess.These parts 41 and 42 tangentially link.Part IV 41 tangentially links to the apex 33 with radius of curvature OD2 ".
Be 12 at diameter OD2
1/
4when inch, then, the radius of curvature of Part IV 41 is the amount rank of 25mm, and extends in the angular arc portion on 25 ° of amount rank.4th bossing 41 is arranged in apex 33 " and Part V 42 between.The radius of curvature that Part V 42 has is greater than the radius of curvature of Part IV 41.It also covers with angular arc portion, and this angular arc portion is more than or equal to the angular arc portion of Part IV 41.Especially, be 12 for described diameter OD2
1/
4the embodiment of inch, the radius of curvature of 36mm is for this Part V 42 and the angular arc portion for 50 ° of amount rank.
Advantageously, the group of two parts 41 and 42 forms the trailing edge 36 defined by simple bossing " compound bossing; this simple bossing covers and is greater than the angular arc portion that 90 ° are less than 120 °, and the radius of curvature that the simple bossing that this is defined has equals to form in the independent radius of curvature of its each part maximum.
As seen in the figure 7, leading edge 35 links to adjacent rear edges 36 via recessed region 37 ".In fact, this recessed region 37 comprises the point of contact 43 with an imaginary circle, and this imaginary circle has the diameter being less than or equal to value OD1, and corresponds to the external diameter of central body 21.
Between leading edge 35 and point of contact 43, this part of recessed region 37 belongs to the foot formed by the first protuberance 24.At trailing edge 36 " and point of contact 43 between, another part of recessed region 37 belongs to the foot formed by the 3rd protuberance 26.This another part comprises adjacent to trailing edge 36 " the second recess 45.
The radius of curvature of the first recess 44 is less than the radius of curvature of the second recess 45.In fact, in the example in figure 7, the radius of curvature of the first recess 44 is the amount rank of 21mm, and the radius of curvature of the second recess 45 is the amount rank of 68mm.The angular arc portion covered by each in these recesses 44 and 45 is in 15 ° within the scope of 40 °, such as, be the amount rank of 25 °.
In the embodiments described, recessed region 37 is actually compound recessed surfaces.From the first adjacent recess 44 continuously, it comprises the 3rd recess the 46, three recess and extends to point of contact 43 with identical radius of curvature.3rd recess 46 tangentially links to the 4th recess the 47, four recess 47 and extends to the second recess 45 with identical radius of curvature.
The radius of curvature of the 3rd recess 46 is greater than the radius of curvature of three other recesses 44,45 and 47.In fact, in the example in figure 7, the radius of curvature of the 3rd recess 46 is the amount rank of 100mm, and the radius of curvature of the 4th recess 47 is the amount rank of 50mm.The angular arc portion covered by each in these recesses 44 and 45 is in 15 ° within the scope of 40 °.
The angular arc portion covered by each in these recesses 44,45,46 and 47 is in the scope of 80 ° to 100 °.
Describe in detail by Fig. 6 and 7 and be positioned at a region (in this region, their apex that protuberance has has the radius of curvature identical with the circle with diameter OD2) in device 20 cross section after, we will describe the details of Fig. 8 now, correspond to the cross section of the protuberance observed in the portion that is inclined upwardly be made up of an expansion section 32.
The difference between the cross section of Fig. 6 and the cross section of Fig. 8 will be described emphatically now:
-in enlarged area, the radial foot formed by each protuberance is not included in the Breadth Maximum Lmax of the position between apex and minimum widith Lmin.
In fact, the region that the width of each foot is attached to central body 21 from it reduces continuously to its apex 33;
-leading edge 35,35 ' and 35 " and trailing edge 36,36 ' and 36 " extend in the angular arc portion more much smaller than the corresponding angular arc portion described for Fig. 6 and 7 above;
-leading edge 35,35 ' and 35 " and trailing edge 36,36 ' and 36 " can be convex surfaces, there is continuous curvature radius in expansion section 32;
-trailing edge 36,36 ' and 36 " radius of curvature that has roughly is less than or equal to leading edge 35,35 ' and 35 " radius of curvature;
-recessed region 37 can be recessed surfaces, and it has continuous print radius of curvature in expansion section 32.
This packet size provided above is measured after deposition one deck high friction resistant material.In fact, the imagination purposes of given this stabilizer, common, a part at least apex and at least leading edge and trailing edge is covered with the material being commonly referred to as stiffened (hardbanding) material.This material, by solder deposits, such as, by laser weld, or is deposited by spraying or process of surface treatment.
In the embodiment briefly showed in fig .9, the blade of protuberance is spaced apart with the distance d launched, and described distance d is roughly much smaller compared with the axial distance covered by blade in a turn.Geometry pitch is the distance covered by blade when carrying out a turn.In fact, the blade of protuberance 24,25 and 26 carries out being less than one turn, but roughly half way around.
In fact, the distance d of expansion is less than the actual axial distance Dp passed through of protuberance.Exemplarily, the distance d of expansion is the amount rank of the Breadth Maximum Lmax of protuberance.
In unshowned change case, blade can around main body with non-constant angular turn, and this angle such as increases gradually along blade.
Figure 10 illustrates that the Breadth Maximum Lmax of protuberance disposes between mid portion 27 its starting in expansion section 32 to be increased, this change case can due to the existence of the transition portion between tubular central body 21 and mid portion 27, protuberance 24,25 and 26 starts in the part., and in the part., leading edge and trailing edge can comprise and those different radius of curvature described above, to prevent described edge from hollowing out the hole wall formed, particularly under the advance of probing parts in well or the effect of withdrawing.
Figure 11 illustrates the change case according to stabilizer arrangement of the present invention.In the example of fig. 11, the stabilizing function of device 120 is directly implemented in being called in the downstream part of bit gauge (not shown) of drill bit place.In this embodiment, realize the end that device 120 of the present invention is arranged in bottom hole assembly, this bottom hole assembly comprises single connector 122, for being connected with upstream original paper.
In region 150, this region 150 is limited to the axial upstream of drill bit, and close to connector 122, outer perimeter has protuberance, and the profile had of described protuberance corresponds to the profile observed in the first embodiment of stabilizer 20.Difference between stabilizer 20 comes from the following fact: equally distributed protuberance on the circumference that region 150 is in this example included in this region.
In the downstream of this region 150 along the direction in shaft bottom, device 120 comprises region 151, and the cross section of forms is replaced, respectively shown in Figure 13 and 14 with having two kinds in this region 151.In Figure 13 and 14, each protuberance in region 150 is continued by the pitch identical with region 151, but cross section changes.In fact, in fig. 13, each leading edge of five protuberances has acute angle, partly to hollow out the wall in the hole formed.When protuberance acutangulates, their leading edge can comprise the plug-in unit formed by polycrystalline diamond (PCD).
In change case, in fig. 14, only three protuberances in six protuberances have the leading edge with this sharp angles.The protuberance with the profile of the type seen in region 105 and the protuberance with sharp profile are alternately.
Especially, as seen in fig. 11, in region 151, along axis X continuously, leading edge has the sharp-pointed profile to greater or lesser degree.Especially, it can have the pattern of repetition, and this pattern makes soft profile and sharp profile alternately.
Device of the present invention also can be integrated into being called in the part of bit gauge of drill bit.
In another change case of the present invention, as shown in figures 15 and 16, describe roller reamer 220, for its leading edge and trailing edge, it has and those the identical profiles described in the embodiment shown in Fig. 2 to 7.Comparatively, in this example, protuberance makes blade have torsion relative to longitudinal axis X zero angle of inclination.This embodiment and above-mentioned difference between those also derive from the following fact: each apex 33,33 ' and 33 " each is provided with the holding part 250 radially outward opened wide.This holding part 250 keeps roller 251.Especially, roller 251 is provided with pin, to improve the calibration of the borehole wall.Usually, these pins are manufactured by tungsten carbide.
In whole description, statement " comprising " should be interpreted as and " comprising at least one " synonym, unless specifically stated otherwise.
Claims (17)
1. the stabilizer arrangement (20 for drilling rod, 120, 220), bottom hole assembly especially for rotating around longitudinal axis (X), described device comprise tubular central body (21) and at the axial end portion place of described central body for being connected to the interface unit (22 of the element of described bar, 23), described device is provided with spiral protuberance (24, 25, 26), described protuberance is positioned on the surface of described body, intention contacts with the wall in drilled hole, look in direction from upstream axial end portion along downstream axial end, described spiral protuberance is around axis (W) rotation along clockwise direction of described central body, it is characterized in that,
The apex (33,33,33) of described spiral protuberance comprises the leading edge (35,35 ' and 35 ") that limits along direction of rotation and trailing edge (36,36 ' and 36 "), described leading edge comprises bossing, makes the Part I of described bossing (38) have the radius of curvature being greater than 3.5mm in the angular arc portion of at least 20 °.
2. stabilizer arrangement according to claim 1, it is characterized in that, described bossing is composite part and comprises at least one second bossing (39) adjacent to described Part I, the radius of curvature that described Part II has is less than the radius of curvature of described Part I, before described Part II is positioned at described Part I along direction of rotation.
3. stabilizer arrangement according to claim 2, it is characterized in that, described bossing extends and comprises Part III in the angular arc portion being less than 180 °, described Part II is arranged between described Part I and Part III (40), and the radius of curvature that described Part III is had is greater than the radius of curvature of described Part I.
4. the stabilizer arrangement according to any one in aforementioned claim, is characterized in that, portion's section of described bossing tangentially links.
5. the stabilizer arrangement according to any one in aforementioned claim, is characterized in that, the apex of described spiral protuberance forms circular arc, and described circular arc tangentially links to the bossing of described leading edge.
6. the stabilizer arrangement according to last item claim, is characterized in that, the diameter (OD2) that described circular arc has the function as the theoretical diameter in the hole drilled at shaft bottom place and determines; Especially, described diameter is determined by described theoretical diameter is deducted the minimum value of 1/64 inch.
7. the stabilizer arrangement according to any one in aforementioned claim, it is characterized in that, described trailing edge comprises the second bossing (41,42), makes the apex of described spiral protuberance form the circular arc tangentially linking to this second bossing.
8. the stabilizer arrangement according to any one in aforementioned claim, it is characterized in that, described stabilizer arrangement comprises the material having hardness and be substantially greater than the hardness of described spiral protuberance, and this material covers the part of at least one in apex and described leading edge and described trailing edge.
9. the stabilizer arrangement according to any one in aforementioned claim, is characterized in that, holding part (250) is formed in the apex place of described spiral protuberance, to keep the roller (251) rotated freely.
10. the stabilizer arrangement according to any one in aforementioned claim, it is characterized in that, described spiral protuberance forms radial foot, described radial foot has the minimum widith (Lmin) measured perpendicular to bisector (B), and described minimum widith is less than than the Breadth Maximum (Lmax) of described minimum widith closer to the described foot of apex.
11. stabilizer arrangements according to any one in aforementioned claim, is characterized in that, described stabilizer arrangement comprises recessed region between described leading edge and described trailing edge (37,37 ', 37 ").
12. stabilizer arrangements according to last item claim, it is characterized in that, each recessed region comprises the first recess (44) tangentially linking to described leading edge, and the radius of curvature that described first recess has is less than the radius of curvature of the second recess (45) tangentially linking to described adjacent rear edges.
13. stabilizer arrangements according to last item claim, it is characterized in that, described spiral protuberance is spaced apart with the development distance (d) being less than the axial distance covered by described helical.
14. stabilizer arrangements according to any one in aforementioned claim, it is characterized in that, described spiral protuberance turns over around described body and is less than one turn, turns over half way around in particular.
15. stabilizer arrangements according to any one in aforementioned claim, it is characterized in that, described downstream axial end is directly attached to drill bit.
16. stabilizer arrangements according to any one in aforementioned claim, it is characterized in that, described spiral protuberance and described tubular body manufacture in an integral manner.
17. stabilizer arrangements according to any one in aforementioned claim, it is characterized in that, described central body has hole, makes the minimum thickness of the wall of described central body be rendered as larger than the external diameter of described body 25%.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR12/60359 | 2012-10-30 | ||
| FR1260359A FR2997439B1 (en) | 2012-10-30 | 2012-10-30 | STABILIZER DEVICE FOR WELL BOTTOM LINING |
| US201361754009P | 2013-01-18 | 2013-01-18 | |
| US61/754,009 | 2013-01-18 | ||
| PCT/EP2013/070341 WO2014067730A1 (en) | 2012-10-30 | 2013-09-30 | Stabilizer device for bottom hole assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104755694A true CN104755694A (en) | 2015-07-01 |
Family
ID=47833127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380057033.3A Pending CN104755694A (en) | 2012-10-30 | 2013-09-30 | Stabilizer device for bottom hole assembly |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2917451A1 (en) |
| CN (1) | CN104755694A (en) |
| CA (1) | CA2885963A1 (en) |
| FR (1) | FR2997439B1 (en) |
| WO (1) | WO2014067730A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018151718A1 (en) * | 2017-02-15 | 2018-08-23 | Chevron U.S.A. Inc. | Drill string stabilizer |
| GB201917970D0 (en) * | 2019-12-09 | 2020-01-22 | Innovative Drilling Systems Ltd | Downhole traction tool and method of use |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3338069A (en) * | 1965-03-11 | 1967-08-29 | Exxon Production Research Co | Rotary drill collar |
| CN2101744U (en) * | 1991-06-10 | 1992-04-15 | 牡丹江石油机械厂 | Stabilizer of hart fased brock type drill |
| EP1026364A1 (en) * | 1999-02-05 | 2000-08-09 | S.M.F. International | Profiled element for a rotary drilling device and drill string having at least one of said elements |
| GB2445862A (en) * | 2007-01-16 | 2008-07-23 | Weatherford Lamb | Stabiliser with stabilisers movable along an offset axis relative to the stabiliser body |
| US20110005836A1 (en) * | 2009-07-13 | 2011-01-13 | Radford Steven R | Stabilizer subs for use with expandable reamer apparatus,expandable reamer apparatus including stabilizer subs and related methods |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275935A (en) | 1979-07-17 | 1981-06-30 | American Coldset Corp. | Drilling stabilizer |
| EP0254900B1 (en) * | 1986-07-03 | 1990-04-25 | Eastman Christensen Company | Stabilizer for drill strings |
| JP3274837B2 (en) | 1998-05-28 | 2002-04-15 | 石油公団 | Drilling stabilizer |
| US8813873B2 (en) | 2009-05-29 | 2014-08-26 | Conocophillips Company | Enhanced smear effect fracture plugging process for drilling systems |
-
2012
- 2012-10-30 FR FR1260359A patent/FR2997439B1/en not_active Expired - Fee Related
-
2013
- 2013-09-30 EP EP13767010.5A patent/EP2917451A1/en not_active Withdrawn
- 2013-09-30 WO PCT/EP2013/070341 patent/WO2014067730A1/en active Application Filing
- 2013-09-30 CN CN201380057033.3A patent/CN104755694A/en active Pending
- 2013-09-30 CA CA 2885963 patent/CA2885963A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3338069A (en) * | 1965-03-11 | 1967-08-29 | Exxon Production Research Co | Rotary drill collar |
| CN2101744U (en) * | 1991-06-10 | 1992-04-15 | 牡丹江石油机械厂 | Stabilizer of hart fased brock type drill |
| EP1026364A1 (en) * | 1999-02-05 | 2000-08-09 | S.M.F. International | Profiled element for a rotary drilling device and drill string having at least one of said elements |
| GB2445862A (en) * | 2007-01-16 | 2008-07-23 | Weatherford Lamb | Stabiliser with stabilisers movable along an offset axis relative to the stabiliser body |
| US20110005836A1 (en) * | 2009-07-13 | 2011-01-13 | Radford Steven R | Stabilizer subs for use with expandable reamer apparatus,expandable reamer apparatus including stabilizer subs and related methods |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014067730A1 (en) | 2014-05-08 |
| CA2885963A1 (en) | 2014-05-08 |
| FR2997439A1 (en) | 2014-05-02 |
| EP2917451A1 (en) | 2015-09-16 |
| FR2997439B1 (en) | 2015-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101946056B (en) | Drill packer member, drill pipe, and corresponding drill pipe string | |
| CA2143350C (en) | Conical inserts for rolling cone rock bits | |
| US7798258B2 (en) | Drill bit with cutter element having crossing chisel crests | |
| EP1841943B1 (en) | Roller reamer | |
| US7950476B2 (en) | Drill bit and cutter element having chisel crest with protruding pilot portion | |
| US8205692B2 (en) | Rock bit and inserts with a chisel crest having a broadened region | |
| US6206117B1 (en) | Drilling structure with non-axial gage | |
| EP2010746B1 (en) | High density row on roller cone bit | |
| BR112013020374B1 (en) | drill bit and downhole cutting tool | |
| US6138780A (en) | Drag bit with steel shank and tandem gage pads | |
| US8028773B2 (en) | Drill bit and cutter element having a fluted geometry | |
| US8230952B2 (en) | Sleeve structures for earth-boring tools, tools including sleeve structures and methods of forming such tools | |
| GB2328698A (en) | Drill bit | |
| GB2362905A (en) | Earth boring bit | |
| CN104755694A (en) | Stabilizer device for bottom hole assembly | |
| CN106470778A (en) | Apparatus for cold rolling and cold rolling rotation shoulder connection screw thread | |
| US7673709B2 (en) | Earth-boring bit with shear cutting elements | |
| US20140262536A1 (en) | Downhole cutting tools having hybrid cutting structures | |
| CN103797209B (en) | Drill string element with liquid activation area | |
| GB2381812A (en) | Asymmetric compact for drill bit | |
| US20150252629A1 (en) | Stabilizer device for bottom hole assembly | |
| CN107073598A (en) | Auger boring device and manufacture method | |
| WO2014028152A1 (en) | Downhole cutting tools having hybrid cutting structures | |
| US10907414B2 (en) | Earth boring tools having fixed blades and varying sized rotatable cutting structures and related methods | |
| US20090145667A1 (en) | Active stabilization during cutting for hole opening tools |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |