US20160177634A1 - Telescopic joint with interchangeable inner barrel(s) - Google Patents
Telescopic joint with interchangeable inner barrel(s) Download PDFInfo
- Publication number
- US20160177634A1 US20160177634A1 US14/892,896 US201514892896A US2016177634A1 US 20160177634 A1 US20160177634 A1 US 20160177634A1 US 201514892896 A US201514892896 A US 201514892896A US 2016177634 A1 US2016177634 A1 US 2016177634A1
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- US
- United States
- Prior art keywords
- inner barrel
- locking mechanism
- connector
- barrel
- marine riser
- 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.)
- Abandoned
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- 230000007246 mechanism Effects 0.000 claims abstract description 76
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000005553 drilling Methods 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Images
Classifications
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- 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
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
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- 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
- E21B17/01—Risers
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- 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
- E21B17/02—Couplings; joints
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
Abstract
Embodiments disclosed herein relate to an apparatus including a first inner barrel of a telescopic marine riser and a first locking mechanism to releasably lock an upper end of the first inner barrel to the telescopic marine riser or a second inner barrel. In another aspect, embodiments disclosed herein relate to a method including assembling a telescopic marine riser, replacing at least one inner barrel of a telescoping marine riser with a corresponding replacement inner barrel of a different length, and reassembling the telescoping marine riser with the replacement inner barrel.
Description
- This application claims the benefit of US Provisional Application having Ser. No. 62/013,860 filed Jun. 18, 2014, which is incorporated by reference in its entirety.
- Drilling, production and completion of offshore wells from a floating platform, e.g., a vessel, tension leg platform, etc., is conducted through a riser assembly which extends from the platform to the wellhead on the sea floor. The riser assembly includes a series of pipe sections or barrels connected end to end. Marine drilling risers provide a conduit through which materials may flow between a platform and a wellbore. While the platform from which the wellbore activities are being conducted is maintained as nearly as possible in a fixed position above the wellhead, there is some variation in this relationship, such that there is relative lateral and vertical shifting between the platform and the wellbore. Accordingly, the riser assembly accommodates this relative movement between the platform and the wellhead as well as forces acting on the riser assembly from waves, currents and the like.
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FIG. 1 shows a conventional marine drilling system having anouter barrel 16 of a telescoping riser section whose lower end is coupled to the top of a fixed length of riser (not shown) that extends to a subsea wellhead (not shown). The telescoping riser section is supported by atension ring 20 coupled to theouter barrel 16. Thetension ring 20 is a type of buoyancy component for supporting at least part of the weight of the telescoping riser once connected to a well head and to put tension on the riser. Thetension ring 20 is coupled to theouter barrel 16 and includes cables (not shown) that extend to the floatingdrilling platform 11 in order to transfer some of the buoyancy thereof to thetension ring 20 to support at least part of the weight of the telescoping riser in the body of water. Aninner barrel 14 slidably, sealingly engages the interior of theouter barrel 16. Specifically, a connector, for example apacking element 18 may be slidably engaged with theinner barrel 14. A lower end of thepacking element 18 is permanently coupled to an upper end of theouter barrel 16. Thus, the length of the riser may be changed in order to compensate for heave of thedrilling platform 11. The riser may also be moved laterally to compensate for lateral motion of thedrilling platform 11. The upper end of theinner barrel 14 is permanently coupled to aflange 17. Theflange 17 allows the telescoping riser section to easily connect to aflex joint 12 and adiverter 10, disposed at the top of the marine riser. - Currently, in the art, if the length of the telescopic riser is to be shortened, the
inner barrel 14 is cut to remove fromflange 17 and the cut section of theinner barrel 14 is removed to adjust the length. The remaining sections of the inner barrel are welded together to bring the length of the inner barrel to the desired length. If it is desired to lengthen the inner barrel, the inner barrel may be cut into two sections and a tubular section having the same characteristics (i.e. inner and outer diameters) as the inner barrel may be welded between the two sections of the cut inner barrel. -
FIG. 1 shows an example embodiment of a marine drilling system using a riser; -
FIG. 2 shows an example embodiment of a marine drilling system according to the present disclosure; -
FIGS. 3-5 show example embodiments of locking mechanisms according to the present disclosure. - A riser assembly comprises a series of pipe sections or telescoping barrels connected end to end. In one aspect, embodiments disclosed herein relate to an apparatus and method for changing the length of a telescopic marine riser without physically damaging the barrels (e.g., cutting and/or welding). Specifically, embodiments disclosed herein provide a telescopic marine riser having interchangeable barrels.
- In one aspect, embodiments disclosed herein relate to an apparatus having a first inner barrel of a telescopic marine riser and a first locking mechanism to releasably lock an upper end of the first inner barrel to the telescopic marine riser or a second inner barrel.
- In another aspect, embodiments disclosed herein relate to an apparatus having an outer barrel of a telescopic marine riser, a first inner barrel slidingly engaged with the outer barrel, a first connector coupled to an upper end of the outer barrel, wherein the first inner barrel is slidingly engaged with the first connector, and a first locking mechanism coupled to a lower end of at least one of a first flange or a second connector, the first locking mechanism configured to receive an upper end of the first inner barrel and releasably lock the first inner barrel to a top portion of the marine riser or a second inner barrel.
- In another aspect, embodiments disclosed herein relate to a method that includes coupling a first locking mechanism to a first connector or a marine riser; and releasably locking an upper end of a first inner barrel to the first locking mechanism. The method may further include coupling a lower flange to a lower end of an outer barrel of a marine riser, pre-assembling a first inner barrel by slidingly engaging the first inner barrel to a first connector to form a pre-assembled first inner barrel, coupling a lower end of the first connector to an upper end of the outer barrel, wherein the pre-assembled first inner barrel is slidingly engaged with the outer barrel, and locking an upper end of the first inner barrel to a first locking mechanism, wherein the first locking mechanism is coupled to a lower end of at least one of an upper flange coupled to a top portion of the marine riser, or a second connector slidingly engaged with a second inner barrel.
- In another aspect, embodiments disclosed herein relate to a method, the method includes assembling a telescopic marine riser, replacing at least one inner barrel of a telescoping marine riser with a corresponding replacement inner barrel of a different length, and reassembling the telescoping marine riser with the replacement inner barrel.
- A
telescopic riser 100 section according to the present disclosure is shown schematically inFIG. 2 . As used herein, the term “telescopic riser” and “telescopic marine riser” are used interchangeably to refer to a portion of a marine riser assembly having telescoping barrels.FIG. 2 does not show all components of the marine riser assembly, such as the drilling platform or the diverter for clarity of the illustration. Thetelescopic riser 100 includes anouter barrel 116, and two inner barrels 114-1 and 114-2. In other embodiments, thetelescopic riser 100 may include one outer barrel and more than two inner barrels. Each inner barrel 114-1, 114-2 is slidingly engaged with a connector 118-1 and 118-2, such that first inner barrel 114-1 is slidingly engaged with first connector 118-1 and second inner barrel 114-2 is slidingly engaged with second connector 118-2, i.e. the position of the connectors 118 along the respective inner barrel may change. Connector 118-1 may be coupled to an upper end of second inner barrel 114-2 and connector 118-2 may be coupled to an upper end ofouter barrel 116. As shown, the first and second connectors 118-1, 118-2 are positioned at a lower end of first and second inner barrels 114-1, 114-2, respectively. However, one of ordinary skill in the art will appreciate that because the connectors are slidingly engaged with the inner barrels, the connectors may be positioned at an upper end of the inner barrels in other configurations. According to some embodiments, the connector may be a packing element. Each of theouter barrel 116 and inner barrels 114-1, 114-2 are arranged end-to-end, such that the first inner barrel 114-1 is slidingly engaged with the second inner barrel 114-2 and the second inner barrel 114-2 is slidingly engaged with theouter barrel 116. - As seen in
FIG. 2 , first inner barrel 114-1 is coupled to a lower end ofupper flange 117. Theupper flange 117 allows a connection between thetelescopic riser 100 and a top portion of the marine riser assembly (not shown) including, for example, a flex joint, a diverter, and a drilling platform. A first locking mechanism 121-1 may be coupled to a lower end ofupper flange 117. The first locking mechanism 121-1 may be permanently coupled to the lower end of theupper flange 117 by, for example, welding or machining from a single integral piece. In some embodiments, theupper flange 117 may be integrally formed with the locking mechanism 121-1. The first inner barrel 114-1 may be releasably locked to theupper flange 117 with the first locking mechanism 121-1. - Still referring to
FIG. 2 , the first connector 118-1 may be slidingly engaged with the first inner barrel 114-1; in other words, the first connector 118-1 may slide along the length of first inner barrel 114-1. The first connector 118-1 includes a second locking mechanism 121-2 disposed at a lower end thereof. The second locking mechanism 121-2 may be permanently coupled to or integrally formed with the first connector 118-1. The second locking mechanism 121-2 may receive an upper end of the second inner barrel 114-2, such that the second inner barrel 114-2 is releasably locked to the second locking mechanism 121-2 of the first connector 118-1. Because the first connector 118-1 is releasably locked to an upper end of the second inner barrel 114-2, the first inner barrel 114-1 is also slidingly engaged with the second inner barrel 114-2. In other words, as first connector 118-1, second locking mechanism 121-2, and second inner barrel 114-2 slide along the length of the first inner barrel 114-1, the inner barrel 114-1 may fit within and stroke in and out of the second inner barrel 114-2. - The second inner barrel 114-2 may be slidingly engaged with a second connector 118-2. According to the embodiment shown in
FIG. 2 , a third locking mechanism 121-3 may be permanently coupled to or formed integrally with the second connector at a lower end thereof. The third locking mechanism 121-3 may receive an upper end of theouter barrel 116, such that theouter barrel 116 is releasably locked to the third locking mechanism of the second connector 118-2. Because the second connector 118-2 is releasably fixed to an upper end of theouter barrel 116, the second inner barrel 114-2 is also slidingly engaged with theouter barrel 116. In other words, as second connector 118-2, third locking mechanism 121-3, andouter barrel 116 slide along the length of the second inner barrel 114-2, the second inner barrel 114-2 may fit within and stroke in and out of theouter barrel 116. In some embodiments, the bottommost barrel, theouter barrel 116, may be coupled to alower flange 115. Thelower flange 115 is provided to allow a connection between thetelescopic riser 100 and a bottom portion of the marine riser assembly, including for example, a fixed length riser, and the wellbore. - According to some embodiments, the telescopic marine riser may include any number of inner barrels. For example, the telescopic marine riser may include a first inner barrel slidingly engaged with the outer barrel, where an upper end of the first inner barrel is releasably locked to a first locking mechanism, where the first locking mechanism is coupled to a lower end of an upper flange, which is coupled to a top portion of the marine riser (not shown). According to other embodiments, three or four inner barrels may be included in the
telescopic riser 100 and connected as described above with respect to FIG. 2, such that the uppermost inner barrel is engaged with the locking mechanism of the upper flange and the bottommost barrel or outer barrel is engaged with the lower flange. One having ordinary skill in the art will understand that more than four inner barrels may be included in the telescopic marine riser without departing from the scope of the present disclosure. - The locking
mechanisms 121 of thetelescopic riser 100 are substantially tubular members that may be coupled to a lower end of anupper flange 117 and/or a lower end of a packing element 118, for example, connectors 118-1 and 118-2. The lockingmechanisms 121 may be permanently coupled, for example, welded or integrally formed, with a lower end of anupper flange 117 and/or a lower end of a packing element 118. Referring toFIGS. 3-5 , eachlocking mechanism 121 includes abody 128 and a releasable mechanical fastener, for example internal threads (FIG. 3 ), a plurality of screw receiving apertures 122 (FIG. 4 ), or a plurality ofslots 124 to provide a releasable locked connection (FIG. 5 ). The upper end of the correspondinginner barrel 114 orouter barrel 116 includes a complementing mating mechanical fastener, for example, external threads (FIG. 3 ), a plurality of screw receiving apertures 122 (FIG. 4 ), and a plurality of protrusions corresponding to the plurality ofslots 124 of the locking mechanism 121 (FIG. 5 ). One having ordinary skill in the art will appreciate that the locking mechanism may use other mechanical fasteners without departing from the scope of this disclosure. - Referring to
FIG. 3 , thelocking mechanism 121 may includeinternal threads 125 formed on thebody 128 of thelocking mechanism 121, and the upper end of theinner barrel 114 may have correspondingexternal threads 125 configured to engage the internal threads. In order to secure theinner barrel 114 to theupper flange 117 or connector 118, theinner barrel 114 may be inserted in thelocking mechanism 121, and rotated to tighten the threaded connection. In order to release the connection, theinner barrel 114 may be rotated in the opposite direction relative to thelocking mechanism 121 to loosen the threaded connection. - Referring to
FIG. 4 , thelocking mechanism 121 may have a plurality of screw receiving apertures 122-1 in a wall of thebody 128 of thelocking mechanism 121, and the upper end of theinner barrel 114 may also have a plurality of screw receiving apertures 122-2 configured to align with the screw receiving apertures 122-1. In order to secure theinner barrel 114 to thelocking mechanism 121 of theupper flange 117 or connector 118, each of the screw receiving apertures 122 of theinner barrel 114 and thelocking mechanism 121 may be aligned and a screw (not shown) may then be inserted into each of the aligned screw receiving apertures 122 to lock theinner barrel 114 to thelocking mechanism 121 of theupper flange 117 or connector 118. In order to release the connection, the screws may be removed from the screw receiving apertures 122. One of ordinary skill in the art will appreciate that other mechanical fasteners, such as bolts, pins, etc. may be used with the screw receiving apertures. - Referring to
FIG. 5 , thelocking mechanism 121 may have a plurality ofslots 124 disposed on a lower edge of thebody 128 of thelocking mechanism 121, and the upper end of theinner barrel 114 may have a plurality ofprotrusions 126 corresponding to the plurality ofslots 124. The plurality ofslots 124 may be disposed in a wall of the lower end of thebody 128. According to some embodiments, the plurality ofprotrusions 126 may be spring loaded. In order to secure theinner barrel 114 to thelocking mechanism 121 of theupper flange 117 or connector 118, theslots 124 of thelocking mechanism 121 may be aligned with theprotrusions 126 of theinner barrel 114. Theprotrusions 126 may then be inserted into theslots 124 and secured into place, thereby releasably locking theinner barrel 114 to theupper flange 117. According to some embodiments theinner barrel 114 may be rotated with respect to thelocking mechanism 121 to release the spring loadedprotrusions 126 and secure the locked connection. In order to release the connection, theinner barrel 114 may be rotated in the opposite direction, thereby compressing the spring loadedprotrusions 126, and theinner barrel 114 may continue to be rotated following the path ofslots 124 until theinner barrel 114 is disengaged from thelocking mechanism 121. - Although the above examples are described with respect to the
locking mechanism 121 and theinner barrel 114, one having ordinary skill in the art would understand that any of the above examples may be implemented with any combination of locking mechanisms and barrels. - Assembly of the telescopic marine riser as described with respect to
FIG. 2 may include pre-assembly of the first inner barrel 114-1 to a first connector 118-1 to form a pre-assembled first inner barrel. Once the first inner barrel 114-1 is pre-assembled, the first connector 118-1 may be slidingly engaged with the first inner barrel 114-1. In other words, the first connector 118-1 may be able to slide along the length of the first inner barrel. In embodiments where the second locking mechanism 121-2 is permanently coupled to the first connector 118-1, the locking mechanism 121-2 may be permanently coupled to the first connector 118-1 prior to pre-assembly of the first inner barrel 114-1. In other words, the pre-assembled first inner barrel 114-1 may be slidingly engaged with the first connector 118-1 having a second locking mechanism 121-2 coupled thereto. - Pre-assembly may be repeated for the second inner barrel 114-2 and the second connector 118-2 to form a pre-assembled second inner barrel. One having ordinary skill in the art will understand that pre-assembly of the second inner barrel 114-2 (i.e. a barrel disposed lower on the telescopic marine riser than the first inner barrel 114-1) to the second connector 118-2 may be performed prior to assembly of the first inner barrel without departing from the scope of the present disclosure. According to embodiments having more than two inner barrels, pre-assembly may be completed for each inner barrel. For embodiments having a single inner barrel, pre-assembly may be completed for the first inner barrel.
- Once pre-assembly of at least the bottommost inner barrel, for example, the second inner barrel 114-2 is completed, a lower end of the second connector 118-2 may be coupled to an upper end of the
outer barrel 116. This allows the second inner barrel 114-2 to be slidably engaged within theouter barrel 116. According to some embodiments, a locking mechanism 121-3 may be disposed at a lower end of second connector 118-2, such that the second connector 118-2 is releasably locked to theouter barrel 116 according to the examples provided above with respect toFIGS. 3-5 . - The upper end of the second inner barrel 114-2 may be coupled to the first connector 118-1 (which is pre-assembled to the inner barrel 114-1). This allows the first inner barrel 114-1 to be slidably engaged with the second inner barrel 114-2. As shown in
FIG. 2 , the second locking mechanism 121-2 is disposed at a lower end of the first connector 118-1. The upper end of the second inner barrel 114-2 may be releasably locked to the second locking mechanism 121-2 according to the examples provided above with respect toFIGS. 3-5 . - The upper end of the first inner barrel 114-1 may be coupled to a lower end of the
upper flange 117. As shown inFIG. 2 , the first locking mechanism 121-1 is disposed at a lower end of theupper flange 117. The upper end of the first inner barrel 114-1 may be releasably locked to the first locking mechanism 121-1 according to the examples provided above. Although the above described method of assembly is presented in a particular order, one having ordinary skill in the art will understand that assembly of thetelescopic riser 100 may be completed even if the steps are performed out of the order presented above. - Once a telescopic drilling riser has been assembled, the assembled telescopic drilling riser may be used at a drill site. According to some embodiments, it may be desirable to change the length of the
outer barrel 116 and/or inner barrels 114-1, 114-2 of the telescopic drilling riser, for example, if the requirements of the drill site change or the telescopic marine riser is relocated to a new drill site. Thus, at least one inner barrel of the telescopic marine riser may be replaced with a corresponding replacement inner barrel of a different length. Then the telescopic marine riser may be reassembled with the replacement inner barrel. - In order to replace at least one inner barrel of the telescopic marine riser, the original telescopic marine riser may be disconnected from the marine riser assembly and pulled to the surface for disassembly. The number of original barrels to replace as well as the number and length of the replacement inner barrels to be included in the
telescopic riser 100 may be determined based on the new requirements of, for example, a new drill site. The term “replacement inner barrel” as used herein describes an inner barrel that was not a part of the original telescopic marine riser assembly, in other words a replacement inner barrel is structurally similar to theinner barrels 114 described above but a replacement inner barrel may have a different length. For example, if the distance between the surface of the water and the wellhead of the wellbore is greater than the original drill site, longer replacement barrels may be selected, an additional inner barrel may be added or a combination of longer barrels and an additional inner barrel may be used. If the distance between the surface of the water and the wellhead of the wellbore is less than the original drill site, shorter replacement barrels may be selected or an inner barrel may be removed from the original telescopic marine riser assembly. Once the number of inner barrels to replace has been determined, said inner barrels may be unlocked from the locking mechanism and removed from the original telescopic marine riser assembly as described with respect toFIGS. 3-5 above. - The new telescopic marine riser may be assembled with the replacement inner barrels. Pre-assembly of the determined number of replacement barrels may be performed by slidingly engaging a first replacement barrel to a first connector to form a first pre-assembled replacement inner barrel. Once the determined number of replacement barrels has been pre-assembled, the first connector of the first pre-assembled replacement barrel may be coupled to the outer barrel of the existing telescopic marine riser assembly. According to some embodiments, not all of the inner barrels of the original
telescopic riser 100 are replaced, therefore, the first pre-assembled replacement barrel may be coupled to an existing inner barrel of the original telescopic marine riser. The first connector may include a first locking mechanism at a lower end. Thus, the inner barrel or outer barrel of the originaltelescopic riser 100 may be removably locked to the first connector of the first replacement inner barrel. Coupling a connector to thetelescopic riser 100 assembly and locking said connector to thetelescopic riser 100 assembly may be repeated for the determined number of inner barrels. The uppermost pre-assembled replacement inner barrel may be coupled to an upper flange. Although the above described method of assembly has been described in a particular order, one having ordinary skill in the art will understand that assembly of the telescopic marine riser with the replacement inner barrels may be completed even if the steps are performed out of the order presented above. - Although the preceding description has been described herein with reference to particular means, materials and embodiments, it is not intended to be limited to the particulars disclosed herein. Rather, it extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims.
Claims (20)
1. An apparatus comprising:
a first inner barrel of a telescopic marine riser; and
a first locking mechanism to releasably lock an upper end of the first inner barrel to the telescopic marine riser or a second inner barrel.
2. The apparatus of claim 1 , wherein the first locking mechanism releasably locks the first inner barrel to a first flange coupled to the telescopic marine riser.
3. The apparatus of claim 1 , wherein the first locking mechanism releasably locks the first inner barrel to a first connector, the first connector slidingly engaged with the second inner barrel.
4. The apparatus of claim 3 , wherein the second inner barrel is slidingly engaged with the first inner barrel.
5. The apparatus of claim 3 , further comprising a second locking mechanism, wherein the second locking mechanism releasably locks an upper end of the second inner barrel to a first flange coupled to the top portion of the telescopic marine riser.
6. The apparatus of claim 1 , further comprising:
an outer barrel slidingly engaged with the inner barrel; and
a second connector coupled to an upper end of the outer barrel, wherein the first inner barrel is slidingly engaged with the second connector.
7. The apparatus of claim 1 , wherein the first locking mechanism is a tubular member, wherein a lower end of the tubular member includes one selected from a group consisting of internal threads, a screw receiving apertures, and a plurality of slots.
8. The apparatus of claim 7 , wherein the upper end of the first inner barrel includes one selected from a group consisting of external threads, a plurality of screw receiving apertures, and a plurality of protrusions corresponding to the plurality of slots of the first locking mechanism.
9. The apparatus of claim 1 , further comprising a plurality of inner barrels each slidingly engaged to a corresponding connector, wherein the an upper end of an uppermost inner barrel is engaged with a first flange of the telescoping marine riser and an upper end of each remaining inner barrel is engaged with a connector disposed between each remaining inner barrel.
10. A method comprising:
coupling a first locking mechanism to a first connector or a marine riser; and
locking releasably an upper end of a first inner barrel to the first locking mechanism.
11. The method of claim 10 , wherein the locking comprises threadably engaging the upper end of the first barrel to the first locking mechanism.
12. The method of claim 10 , wherein the locking comprises aligning a plurality of apertures disposed on the first locking mechanism with a plurality of apertures disposed on the upper end of the first inner barrel and securing the first locking mechanism to the first inner barrel by disposing a mechanical fastener in at least one of the aligned plurality of apertures.
13. The method of claim 10 , wherein the locking comprises sliding a plurality of protrusions disposed on an outer diameter of the upper end of the first inner barrel into a corresponding plurality of slots disposed on the first locking mechanism.
14. The method of claim 10 , further comprising:
pre-assembling the first inner barrel by slidingly engaging the first inner barrel to a second connector to form a pre-assembled first inner barrel; and
coupling a lower end of the second connector to an upper end of an outer barrel, wherein the first inner barrel is slidingly engaged with the outer barrel.
15. The method of claim 10 , wherein the first locking mechanism is coupled to the first connector, the method further comprising:
pre-assembling a second inner barrel by slidingly engaging the second inner barrel to the first connector to form a pre-assembled second inner barrel; and
locking an upper end of the second inner barrel to a second locking mechanism, wherein the second locking mechanism is coupled to an upper flange of the marine riser.
16. A method comprising:
assembling a telescopic marine riser;
replacing at least one inner barrel of a telescoping marine riser with a corresponding replacement inner barrel of a different length; and
reassembling the telescoping marine riser with the replacement inner barrel.
17. The method of claim 16 , wherein the replacing comprises:
determining a number of inner barrels to replace from the original marine riser assembly;
unlocking a first inner barrel from an upper flange; and
repeating the unlocking for the determined number of inner barrels.
18. The method of 16, wherein the reassembling comprises:
pre-assembling the determined number of replacement inner barrels by slidingly engaging a first replacement inner barrel to a first connector to form a first pre-assembled replacement inner barrel;
coupling the first connector of the first pre-assembled replacement inner barrel to at least one of an upper end of an outer barrel or an upper end of a pre-assembled inner barrel;
locking an upper end of the first pre-assembled replacement inner barrel to a first locking mechanism, wherein the first locking mechanism is coupled to a second connector of a second pre-assembled inner barrel; and
repeating the coupling and locking the upper end of a pre-assembled replacement inner barrel to a corresponding locking mechanism for the determined number of replacement inner barrels, wherein an uppermost pre-assembled replacement inner barrel is locked to a first flange.
19. The method of claim 16 , wherein at least two inner barrels of the telescoping marine riser are replaced.
20. The method of claim 16 , wherein a length of the replacement inner barrel is determined based on the requirements of a new drilling location.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/892,896 US20160177634A1 (en) | 2014-06-18 | 2015-06-17 | Telescopic joint with interchangeable inner barrel(s) |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201462013860P | 2014-06-18 | 2014-06-18 | |
US14/892,896 US20160177634A1 (en) | 2014-06-18 | 2015-06-17 | Telescopic joint with interchangeable inner barrel(s) |
PCT/US2015/036182 WO2015195770A1 (en) | 2014-06-18 | 2015-06-17 | Telescopic joint with interchangeable inner barrel(s) |
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US20160177634A1 true US20160177634A1 (en) | 2016-06-23 |
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US14/892,896 Abandoned US20160177634A1 (en) | 2014-06-18 | 2015-06-17 | Telescopic joint with interchangeable inner barrel(s) |
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WO (1) | WO2015195770A1 (en) |
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Also Published As
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WO2015195770A1 (en) | 2015-12-23 |
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Owner name: SMITH INTERNATIONAL, INC., TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIEZENBERG, BASTIAAN;REEL/FRAME:042903/0021 Effective date: 20170705 |
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