CN100432369C - Rotary expansion tool for expansible pipe - Google Patents
Rotary expansion tool for expansible pipe Download PDFInfo
- Publication number
- CN100432369C CN100432369C CNB2005100826120A CN200510082612A CN100432369C CN 100432369 C CN100432369 C CN 100432369C CN B2005100826120 A CNB2005100826120 A CN B2005100826120A CN 200510082612 A CN200510082612 A CN 200510082612A CN 100432369 C CN100432369 C CN 100432369C
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- Prior art keywords
- roller
- roller shaft
- piston
- hole
- rotation
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Abstract
The invention is a rotating expanding tool of expansion pipe, comprising a main body, where a through hole is made on the central axis of the main body, the two ends of the through hole are connected with drill string and pressure limiting valve through top and bottom connecting holes, respectively, the circumferences of two sections on the lower side of the middle segment of the main body are radially made with piston holes, the radial direction of the section is consistent with the direction of the central axis of the piston hole, the directions of the two piston holes are the same, a piston is installed in the piston hole, a roller shaft is arranged between the two pistons, the axis of the roller shaft is parallel with that of the main body, the two ends of the roller shaft are inserted in the top and bottom pistons, respectively, the roller shaft is jacketed with a roller, a corresponding position on the main body is made with a sunk part, the roller shaft is jacketed radially with a needle roller, the needle roller is between the roller and the roller shaft, the roller and the roller shaft are equipped axially with ball bearings, the end of the piston hole is fixed with a gland, and the outer surface of the gland is even with that of the roller. Its structure is simple and compact, and can expand the expansion pipe under smaller axial force and has self-adaptability, and can expand the contracted positions.
Description
Technical field
The present invention relates to a kind of instrument that is used for drilling well, well workover and completion, especially a kind of rotation bloat tool of expansion tube belongs to oil gas drilling and production technology field.
Background technology
Bulged tube technology be the end of the eighties by SHELL company new developing technology, in drilling well, completion, workover treatment, be widely used.At present domesticly mainly finish the expansion operation with expansion cone, the weak point of this expanding method be need be bigger axial force, the ability of expansion system relevant device is proposed very high requirement.Weatherford company has successively developed axial self adaptation expansion system (AxialCompliant Expansion System again, be called for short ACES) and self adaptation rotation expansion system (CompliantRotary Expansion System, abbreviation CRES) can address this problem.But,, on document, can not find the related data of their concrete structure for business reason.
Summary of the invention
The objective of the invention is to provide at the deficiencies in the prior art a kind of rotation bloat tool of expansion tube, it is simple and compact for structure, can be implemented under the less axial force the expansion tube distending; Simultaneously, use this bloat tool expansion and also have adaptivity, can expand the undergauge place.
To achieve these goals, the invention provides a kind of rotation bloat tool of expansion tube, it comprises body, the body interior central axis is to offering through hole, on this through hole, following two ends are respectively equipped with, following connecting hole is connected with pressure limiting valve with drill string, radial equipartition offers piston hole respectively on the circumference of two positions on the lower side, stage casing of body, piston is housed in the piston hole, along body shaft to two pistons between be provided with roller shaft, axial and the body axially parallel of this roller shaft, on it, following two ends are located in respectively, following two internal pistons, on roller shaft, be arranged with roller, offer the depressed part that is used to hold roller shaft and roller on the correspondence position of body, roller shaft radially is arranged with needle roller, and needle roller is arranged between roller and the roller shaft, roller and roller shaft axially on ball is housed, the port part of piston hole is installed with gland, and the external surface of gland is concordant with the roller external surface.
In order to guarantee the expansion effect of this bloat tool, the axial distance between two above-mentioned cross sections should be preferably 186mm at 100-260mm.In order to make bloat tool in the course of the work, more reasonable stress, piston hole adopts more than three or three usually.
In sum, the rotation bloat tool of expansion tube provided by the present invention can be implemented under the less axial force the expansion tube distending; Simultaneously, use this bloat tool expansion and also have adaptivity, can expand the undergauge place.
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in detail.
Description of drawings
Fig. 1 is an overall structure sectional drawing of the present invention;
Fig. 2 is the radial section figure of body in the piston hole position;
Fig. 3 is the radial section figure of body in the roller position.
The specific embodiment
As shown in Figure 1, be overall structure sectional drawing of the present invention.As can be known from Fig. 1, the rotation bloat tool of this expansion tube provided by the present invention, it comprises body 1, body 1 inside center axially offers through hole 11, on this through hole 11, following two ends are respectively equipped with, following connecting hole 111 is connected (not shown) with drill string with pressure limiting valve with 112, radial equipartition offers piston hole 12 respectively on the circumference in two cross sections on the lower side, stage casing of body 1, in order to make bloat tool in the course of the work, more reasonable stress, piston hole 12 can adopt more than three or three, but be generally three, body 1 is at the radial section figure of piston hole 12 positions as shown in Figure 2.Can also adopt the scheme of four piston holes in theory, but owing to be subjected to size restrictions, basic unlikely realization.As shown in Figure 1, piston 121 is housed in the piston hole 12, between axial two pistons 121 and 121 ' of body 1, be provided with roller shaft 13, axial and body 1 axially parallel of this roller shaft 13, its upper/lower terminal is located in upper and lower two pistons 121 and 121 ' inside respectively, be arranged with roller 14 on roller shaft 13, offer the depressed part 15 that is used to hold roller shaft 13 and roller 14 on the correspondence position of body 1, body 1 is at the radial section figure of roller 14 positions as shown in Figure 3.As shown in Figure 1, roller shaft 13 radially is arranged with needle roller 16, and needle roller 16 is arranged between roller 14 and the roller shaft 13, roller 14 and roller shaft 13 axially on ball 17 is housed, the port part of piston hole 12 is installed with gland 122, and gland 122 is fixed on the body 1 by bolt 18 usually.After fixing, this bloat tool is under off working state, and the external surface 1221 of gland 122 is concordant with the external surface 141 of roller 14.
In order to guarantee the expansion effect of this bloat tool, the axial distance between piston 121 and 121 ' the center line should be preferably 186mm at 100-260mm.
In conjunction with above-mentioned structure explanation, as shown in Figure 1, the rotation bloat tool of expansion tube provided by the present invention is when the expansion operation, and its top links to each other with drill string, and the bottom connects with pressure limiting valve.Jacking system by rig is sent this bloat tool into inside pipe casing to be expanded.The liquid that the ground hydraulic system supplies with injects in the interior bone 11 of rotation bloat tool main body 1 by the drill string endoporus, because pressure limiting valve cuts out under the rated pressure of design, liquid can not flow through, thereby produces fluid pressure.Body 1 rotates under the drive of drill string, and roller 14 sleeve pipes to be expanded with the outside contact, so because of frictional force being arranged around roller shaft 13 rotations.The effect of big ball 17 and needle roller 16 is to make roller 14 and roller shaft 13 produce relative motion, that is to say that roller 14 is being the center rotation with roller shaft 13 also in body 1 rotation.Piston 121 radially outward moves in the hydraulic action lower edge, and drives roller shaft 13 and radially outwards motion of roller 14 simultaneously, thereby makes 14 pairs of internal surface of sleeve pipe of roller produce pressure.Along with the raising of supplying with hydraulic pressure, the pressure of 14 pairs of internal surface of sleeve pipe of roller increases thereupon, and when pressure surpassed the yield stress of sleeve pipe, contact surface produced plastic strain.Along with pressure continue increase, the plastic zone is constantly expanded, until all entering plastic strain along whole wall thickness.In the process that aforesaid liquid injects, drill string is ceaselessly rotation simultaneously, thereby makes the plastic strain uniformity of internal surface of sleeve pipe.Because gland 122 is to be fixed on the body 1 and can't to produce motion by bolt 18, the largest motion distance of piston 121 arrives this segment distance of gland 122 inboards for the position of this rotation bloat tool piston 121 outside top when static.
When reaching specified expansion amplitude, the pressure limiting valve action is opened, thereby pressure drop, roller 14 withdrawals, a whole set of rotation bloat tool has a displacement vertically under the pressure of the drill effect, pressure limiting valve resets because pressure reduces simultaneously, and fluid pressure raises once more gradually, has so just finished the one-period action.Top action goes round and begins again, and has formed a continuous expansion process, thereby has finished the expansion operation to sleeve pipe.
Need to prove at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (5)
1, a kind of rotation bloat tool of expansion tube, it is characterized in that: it comprises body, the body interior central axis is to offering through hole, on this through hole, following two ends are respectively equipped with, following connecting hole is connected with pressure limiting valve with drill string, on the circumference of two positions on the lower side, stage casing of body, radially offer piston hole respectively, the radial direction of this position is respectively the center line of two piston holes, the piston hole direction unanimity of offering on the circumference of two positions, piston is housed in the piston hole, along body shaft to two pistons between be provided with roller shaft, axial and the body axially parallel of this roller shaft, on it, following two ends are located in respectively, following two internal pistons, be arranged with roller on roller shaft, offer the depressed part that is used to hold roller shaft and roller on the correspondence position of body, roller shaft radially is arranged with needle roller, needle roller is arranged between roller and the roller shaft, roller and roller shaft axially on ball is housed, the port part of piston hole is installed with gland, the external surface of gland is concordant with the roller external surface.
2, the rotation bloat tool of expansion tube according to claim 1, it is characterized in that: the distance between the center line of described two piston holes is in the 100-260mm scope.
3, the rotation bloat tool of expansion tube according to claim 2 is characterized in that: the distance between the described center line is 186mm.
4, according to the rotation bloat tool of claim 1 or 2 or 3 described expansion tubes, it is characterized in that: described piston hole is more than three or three.
5, the rotation bloat tool of expansion tube according to claim 4, it is characterized in that: described piston hole is uniform offering on the circumference of two positions of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100826120A CN100432369C (en) | 2005-07-06 | 2005-07-06 | Rotary expansion tool for expansible pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100826120A CN100432369C (en) | 2005-07-06 | 2005-07-06 | Rotary expansion tool for expansible pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1891972A CN1891972A (en) | 2007-01-10 |
| CN100432369C true CN100432369C (en) | 2008-11-12 |
Family
ID=37597129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100826120A Expired - Fee Related CN100432369C (en) | 2005-07-06 | 2005-07-06 | Rotary expansion tool for expansible pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100432369C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265222A (en) * | 2014-09-17 | 2015-01-07 | 中国石油天然气股份有限公司 | Hydraulic expansion cone capable of realizing self-constriction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2268796Y (en) * | 1996-12-25 | 1997-11-26 | 杜非非 | Expansion pipe |
| CN1195389A (en) * | 1995-08-04 | 1998-10-07 | 德里弗莱克斯公司 | Inflatable tubular sleeve for tubing or obturating well or pipe |
| JP2001012179A (en) * | 1999-06-25 | 2001-01-16 | Tone Corp | Soil sampling device and sampling method |
| US6843319B2 (en) * | 2002-12-12 | 2005-01-18 | Weatherford/Lamb, Inc. | Expansion assembly for a tubular expander tool, and method of tubular expansion |
| US6854522B2 (en) * | 2002-09-23 | 2005-02-15 | Halliburton Energy Services, Inc. | Annular isolators for expandable tubulars in wellbores |
-
2005
- 2005-07-06 CN CNB2005100826120A patent/CN100432369C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195389A (en) * | 1995-08-04 | 1998-10-07 | 德里弗莱克斯公司 | Inflatable tubular sleeve for tubing or obturating well or pipe |
| CN2268796Y (en) * | 1996-12-25 | 1997-11-26 | 杜非非 | Expansion pipe |
| JP2001012179A (en) * | 1999-06-25 | 2001-01-16 | Tone Corp | Soil sampling device and sampling method |
| US6854522B2 (en) * | 2002-09-23 | 2005-02-15 | Halliburton Energy Services, Inc. | Annular isolators for expandable tubulars in wellbores |
| US6843319B2 (en) * | 2002-12-12 | 2005-01-18 | Weatherford/Lamb, Inc. | Expansion assembly for a tubular expander tool, and method of tubular expansion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1891972A (en) | 2007-01-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20120706 |