US20180266194A1 - Method and system for deployment of tubing strings for riser-less applications - Google Patents
Method and system for deployment of tubing strings for riser-less applications Download PDFInfo
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- US20180266194A1 US20180266194A1 US15/755,463 US201515755463A US2018266194A1 US 20180266194 A1 US20180266194 A1 US 20180266194A1 US 201515755463 A US201515755463 A US 201515755463A US 2018266194 A1 US2018266194 A1 US 2018266194A1
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- weightable
- collar
- tubing string
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- interlocking
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- 230000007246 mechanism Effects 0.000 claims description 19
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- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 description 10
- 239000004215 Carbon black (E152) Substances 0.000 description 9
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
- 229930195733 hydrocarbon Natural products 0.000 description 9
- 150000002430 hydrocarbons Chemical class 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B17/16—Drill collars
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/09—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods specially adapted for drilling underwater formations from a floating support using heave compensators supporting the drill string
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/14—Laying or reclaiming pipes on or under water between the surface and the bottom
- F16L1/15—Laying or reclaiming pipes on or under water between the surface and the bottom vertically
Definitions
- the present disclosure relates generally to continuous tubing deployment systems and methods to deploy multiple continuous tubing strings.
- FIG. 1 is a schematic, side view of a riser-less offshore intervention environment with multiple tubing strings deployed to connect a platform to a subsea structure such as a wellhead of a subsea well; or a pipeline manifold.
- FIG. 3B is a schematic, top view of another example of weightable collar as used with a tubing deployment system of FIG. 2 that includes several radial receivers for receiving weights;
- FIG. 4A is a schematic top view of an example clamp assembly of the tubing deployment system of FIG. 2 , deployed to secure the tubing strings of FIG. 2 ;
- FIG. 4B is a schematic side view of an example of an articulated chain of the clamp assembly of FIG. 4A .
- a tubing deployment system facilitates deployment of multiple tubing strings. More particularly, the tubing deployment system prevents different tubing strings from becoming entangled. The tubing deployment system also inhibits undesirable motion caused by underwater environmental conditions, such as buoyancy, underwater currents, and other types of environmental conditions that the tubing strings may experience during deployment.
- the tubing deployment system includes at least one clamp assembly to clamp multiple tubing strings together.
- the tubing deployment system also includes at least one weightable collar with receiving slots (receivers). In some embodiments, receivers are spaced radially about the weightable collar to receive weights such as clump weights.
- the weights may be selected to have different weights based on the material strength of the tubing string and the amount of downward force desired in consideration of the subsea environment.
- the weightable collar includes an interlocking mechanism to secure the weightable collar to another weightable collar of a nearby tubing string. Securing a weightable collar to an adjacent weightable collar effectively couples the tubing strings to which the collars are attached, thereby restricting relative motion between the tubing strings.
- multiple weightable collars, each containing weights are deployed at different depths to secure the tubing strings at intervals along the tubing strings.
- the first and second tubing strings 108 A and 108 B form conduits connecting the platform 101 to the manifold 114 to provide a return flow path for hydrocarbon resources.
- Weightable collars 102 which may include clump weight housings, are deployed at different depths to inhibit undesired motion due to underwater environmental conditions, as previously discussed.
- the weightable collars 102 are coupled to the first and second tubing strings 108 A and 108 B and interlocked to stabilize the first and second tubing strings 108 A and 108 B individually and relative to each other.
- additional tubing strings may be deployed from the platform 101 or from a nearby vessel (not shown).
- the additional tubing strings may also connect to the manifold 114 to provide flow paths for pumped fluids or to provide return flow paths for hydrocarbon resources.
- the additional tubing strings may be secured by additional weightable collars that are interlocked to the weightable collars 102 illustrated in FIG. 1 or one or both of the tubing strings 108 A and 108 B.
- FIG. 1 illustrates three pairs of weightable collars, any number of weightable collars may be deployed at different depths to secure the tubing strings 108 A and 108 B based on the material properties of the tubing strings, and the surrounding environmental conditions.
- the tubing deployment system 200 also includes a first deflector 210 A and a second deflector 210 B overlying to the first and second weightable collars 202 A and 202 B.
- the first and second deflectors 210 A and 210 B are configured to help guide the tubing strings 108 A and 108 B and to allow individual tubing strings to be separately manipulated.
- the deflectors 210 A and 210 B may also act as a shroud or shield to protect the adjacent weightable collars 202 A and 202 B from debris or impact from external objects.
- each of the clamp assemblies 212 and 214 also has a vertically compliant interface with the second tubing string 108 B, which allows freedom of motion in a vertical or axial direction.
- the vertically compliant interface is an articulated chain-type collar, where each link of the collar includes one or more ball bearings or rollers to provide the second tubing string 108 B with freedom of motion in the vertical direction.
- the tubing deployment system 200 may include additional clamp assemblies, deflectors, and weightable collars to secure the first and second tubing strings 108 A and 108 B and to counteract adverse environmental conditions. Furthermore, the tubing deployment system 200 may also include additional clamp assemblies, deflectors, and weightable collars to secure additional tubing strings (not shown) that are deployed by the platform 101 or by a nearby vessel. Additional details of the weightable collars 202 A and 202 B and the clamp assemblies 212 and 214 are described in the following paragraphs and are illustrated in at least FIGS. 3A, 3B, 4A, and 4B .
- FIG. 3A is a schematic, side view of an example of the weightable collars 202 A and 202 B of the tubing deployment system 200 of FIG. 2 that includes several radial receivers for receiving weights.
- the first weightable collars 202 A includes a hollow passage that allows the first tubing string 108 A to pass through.
- the first weightable collar 202 A may include a clamp or a mechanism to fixedly secure the first weightable collar 202 A to the first tubing string 108 A.
- each receiver 204 includes a securing mechanism such as an interlock or latch (not shown), configured to secure the weight 220 once the weight 220 is inserted into the receiver 204 to prevent the weight 220 from falling out of the first weightable collar 202 A.
- the interlock is further configured to disengage the weight 220 when the weight 220 is removed from the first weightable collar 202 A.
- the first weightable collar 202 A also includes a first interlocking member 206 A, which is configured to engage the first weightable collar 202 A with another weightable collar, such as the second weightable collar 202 B.
- the second weightable collar 202 B similar to the first weightable collar 202 A, also includes a hollow interior, a mechanism to secure the second tubing string 108 B, receivers 204 for receiving the weights 220 , and a second interlocking member 206 B.
- the first and second interlocking members 206 A and 206 B may be coupled to each other to join the first and second weightable collars 202 A and 202 B. Once coupled, the first and second interlocking members 206 A and 206 B may also be released to disengage the first and second weightable collars 202 A and 202 B from each other. In the embodiment illustrated in FIG.
- a pinned coupling 207 is installed around the first and second interlocking members 206 A and 206 B and a shear pin 208 is inserted into the pinned coupling 207 to secure the first interlocking member 206 A with the second interlocking member 206 B.
- the tensile strength of the shear pin may be based on a variety of factors, such as, the material strength of the first and second tubing strings 108 A and 108 B, the number of other weightable collars engaged to the tubing strings 108 A and 108 B, environmental factors discussed in the previous paragraphs, and a desired yield strength.
- the shear pin 208 is manufactured to have a yield strength that is less than the force that would be exerted on to the shear pin 208 due to failure of one of the first or second tubing strings 108 A or 108 B.
- the shear pin 208 would fail as a result of the force generated by the failed tubing string ( 108 A or 108 B) force, thereby allowing the first and second interlocking members 206 A and 206 B to disengage from each other, and mitigating the risk that failure of (for example) the first tubing string 108 A will result in failure of the second tubing string 108 B. Additional embodiments of the first and second weightable collars 202 A and 202 B are described in the following paragraphs and are illustrated in at least FIG. 3B .
- FIG. 3B is a schematic, top view of another embodiment of a weightable collar assembly of the tubing deployment system of FIG. 2 that includes several radial receivers 304 for receiving weights 320 .
- the receivers 304 are radially spaced and extend from the top of the first and second weightable collars 302 A and 302 B.
- Weights 320 may be inserted radially from a side or downwardly from above into the receivers 304 .
- the embodiment of FIG. 3B functions similarly to that of FIG. 3A .
- the first and second weightable collars 302 A and 302 B also include the first and second interlocking members 306 A and 306 B.
- the first and second interlocking members 306 A and 306 B include hollow passages that may be aligned when the first and second weightable collars 302 A and 302 B are engaged along an engagement surface 309 to allow a shear pin 308 to slide into both hollow passages to couple the first and second interlocking members 306 A and 306 B.
- the hollow passage of the first and second interlocking members 306 A and 306 B contain internal threads.
- FIG. 4A is a schematic top view of an example clamp assembly 212 or 214 of the tubing deployment system 200 of FIG. 2 , deployed to secure the tubing strings 108 A and 108 B of FIG. 1 .
- the clamp assembly 400 includes an internally threaded rod 402 having externally threaded extendable members 403 A and 403 B.
- the internally threaded rod 402 and externally threaded extendable members 403 A and 403 B are rotatable about an axis that is approximately perpendicular to the longitudinal axes of the first and second tubing strings 108 A and 108 B to extend from the first tubing string 108 A to the second tubing string 108 B.
- the first extendable member 403 A is coupled to first clamp 406 , which is operable to engage the first tubing string 108 A.
- first clamp 406 When the first clamp 406 engages the first tubing string 108 A, the first clamp 406 firmly grips the first tubing string 108 A and the clamp assembly 400 is fixedly secured to the first tubing string 108 A.
- the clamp assembly 400 remains fixedly secured to the first tubing string 108 A until the first clamp 406 disengages from the first tubing string 108 A.
- the second extendable member 403 B is connected to a second clamp 408 that is operable to engage the second tubing string 108 B.
- the second clamp 408 may be fitted with ball bearings 410 .
- the second clamp 408 wraps around the second tubing string 108 B, thereby inhibiting horizontal motion of the second tubing string 108 B.
- the ball bearings 410 provide the second tubing string 108 B with freedom of motion in the vertical direction. As such, if the second tubing string 108 B fails, the second tubing string 108 B would slide through the second clamp 408 without overloading and inducing failure of the first tubing string 108 A.
- the second clamp is fitted with rollers.
- the rollers similar to the ball bearings 410 , also provide the second tubing string 108 B with freedom of motion in the vertical direction.
- the clamp assembly 400 includes additional sections with additional clamps (not shown) that are operable to engage additional tubing strings.
- both the first and the second clamps 406 and 408 include ball bearings or rollers to allow vertical motion of the first and second tubing strings 108 A and 108 B.
- both the first and the second clamps 406 and 408 are operable to tightly grip the first and second tubing strings 108 A and 108 B, respectively, to fixedly secure the clamp assembly 400 to the first and second tubing strings 108 A and 108 B.
- FIG. 4B is a schematic side view of an example of an articulated chain 404 of the clamp assembly 400 of FIG. 4A .
- the clamp assembly 400 of FIG. 4A includes an articulated chain 404 that extends from the first tubing string 108 A to the second tubing string 108 B.
- the articulated chain 404 is connected to the first clamp 406 at one end and includes multiple links, where each link includes a clamp 412 and ball bearings 410 . In other embodiments, each link includes a clamp 412 and rollers.
- a tubing deployment system comprising a first tubing string having a first weightable collar; and a second tubing string having a second weightable collar, wherein each of the first weightable collar and second weightable collar comprises an interlocking member and a plurality of receivers spaced radially about an external surface of the weightable collar, each of the plurality of receivers being configured to receive a weight.
- Clause 2 the system of clause 1, further comprising a clamping member having a fixed interface with the first tubing string, the fixed interface comprising a clamp.
- Clause 3 the system of any combination of clauses 1 and 2, comprising a clamping member having a vertically compliant interface with the second tubing string.
- Clause 6 the system of any combination of clauses 1-5, wherein each link of the articulated chain comprises one or more rollers.
- Clause 7 the system of any combination of clauses 1-6, further comprising a first deflector overlying to the plurality of receivers of the first weightable collar and coupled to the first tubing string, and a second deflector overlying to the plurality of receivers of the second weightable collar and coupled to the second tubing string.
- Clause 8 the system of any combination of clauses 1-7, wherein the interlocking member of the first weightable collar and the interlocking member of the second weightable collar are engagable along an engagement surface to secure the interlocking member of the first weightable collar to the interlocking member of the second weightable collar.
- Clause 9 the system of any combination of clauses 1-8, further comprising a pinned coupling, wherein the first interlocking member is secured to the second interlocking member by a shear pin.
- Clause 10 the system of any combination of clauses 1-9, further comprising: a first clamping member having a fixed interface with the first tubing string, the fixed interface comprising a clamp; a second clamping member having a vertically compliant interface with the second tubing string; a first deflector overlying to the plurality of receivers of the first weightable collar and coupled to the first tubing string; and a second deflector overlying to the plurality of receivers of the second weightable collar and coupled to the second tubing string, wherein the first interlocking member of the first weightable collar extends from the first weightable collar and the interlocking member of the second weightable collar extends from the second weightable collar.
- Clause 11 the system of any combination of clauses 1-10, further comprising a releasable coupling between the interlocking members of the first and the second weightable collars.
- a weightable collar comprising: a hollow interior for receiving a tubing string; an interlocking mechanism; and a plurality of receivers spaced radially about an external surface of the weightable collar, each receiver of the plurality of receivers being configured to receive a weight.
- Clause 13 the weightable collar of clause 12, wherein the weight is radially and inwardly inserted within a receiver of the plurality of receivers.
- Clause 14 the weightable collar of any combination of the clauses 12 and 13, wherein the receiver comprises a securing mechanism configured to engage the inserted weight.
- Clause 15 the weightable collar of any combination of the clauses 12 and 14, wherein the weight is radially and downwardly inserted into one or more receivers of the plurality of receivers.
- Clause 16 the weightable collar of any combination of the clauses 12-15, wherein the interlocking mechanism is configured to engage an adjacent interlocking mechanism of an adjacent weightable collar.
- Clause 17 the weightable collar of any combination of the clauses 12-16, wherein the interlocking mechanism comprises a shear pin to engage the adjacent interlocking mechanism.
- Clause 18 a method of securing at least two tubing strings, the method comprising: attaching the first tubing string to a first weightable collar, the first weightable collar comprising an interlocking member and a plurality of receivers spaced radially about an external surface of the first weightable collar, each of the plurality of receivers being configured to receive a weight; attaching a second tubing string to a second weightable collar, the second weightable collar comprising an interlocking member and a plurality of receivers spaced radially about an external surface of the second weightable collar, each of the plurality of receivers being configured to receive a weight; inserting at least one weight into one or more of the plurality of receivers of the first weightable collar and the second weightable collar; and engaging the first interlocking member with the second interlocking member.
- Clause 19 the method of clause 18, further comprising: engaging a first deflector to the first tubing string, the first deflector overlying to the plurality of receivers of the first weightable collar and coupled to the first tubing string; and engaging a second deflector to the second tubing string, the second deflector overlying to the plurality of receivers of the second weightable collar and coupled to the second tubing string.
- Clause 20 the method of any combination of clauses 18 and 19, wherein each of the first and second interlocking members comprises a hollow passage, and wherein engaging the first interlocking member with the second interlocking member further comprises: engaging the first and second interlocking members along an engagement surface to align the hollow passages of the first and second interlocking members; and inserting a shear pin through the hollow passages of the first and second interlocking members.
- a “platform” is defined to include oil rigs, vessels, and any other support structure operable to deploy tubing strings in a subsea environment.
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Abstract
Description
- The present disclosure relates generally to continuous tubing deployment systems and methods to deploy multiple continuous tubing strings.
- Riser pipes are often used in subsea drilling and intervention operations to connect subsea wells or pipelines to vessels or mobile offshore platforms or vessels (collectively referred to as platforms). More particularly, sections of riser pipes are connected together to form a conduit between a subsea well structures and the platforms. The conduit provides a flow path for fluids and particulates to travel from the platforms down to the subsea well, and provides a return flow path for hydrocarbon resources to travel from the subsea well to the platforms, where the hydrocarbon resources are extracted.
- As hydrocarbon resources are discovered at greater sea depth, additional sections of riser pipes are used to connect the subsea wells to platforms, thereby greatly increasing material costs of the riser pipes and prolonging the installation and uninstallation processes. Further, once deployed, the riser pipes form a semi-permanent fixture, and may not be quickly or easily disconnected from the platforms. However, ocean weather conditions are often unpredictable and severe, in certain adverse weather conditions, such as, but not limited to hurricanes, tsunamis, and maelstroms, it may be desirable for platforms to quickly disengage from the riser pipes. In response to the foregoing shortcomings of riser pipes, tubing strings, such as coiled tubing, have been used as an alternative for riser pipes in subsea pipeline and intervention operations. Deployment and recovery of tubing strings is faster than the installation process of riser pipes. Further, the material cost of tubing strings is also less than riser pipes.
- Illustrative embodiments of the present disclosure are described in detail below with reference to the attached drawing figures, which are incorporated by reference herein, and wherein:
-
FIG. 1 is a schematic, side view of a riser-less offshore intervention environment with multiple tubing strings deployed to connect a platform to a subsea structure such as a wellhead of a subsea well; or a pipeline manifold. -
FIG. 2 is a schematic, side view of an example of a tubing deployment system deployed to secure the tubing strings ofFIG. 1 ; -
FIG. 3A is a schematic, side view of an example of weightable collar as used with a tubing deployment system ofFIG. 2 that includes several radial receivers for receiving weights; -
FIG. 3B is a schematic, top view of another example of weightable collar as used with a tubing deployment system ofFIG. 2 that includes several radial receivers for receiving weights; -
FIG. 4A is a schematic top view of an example clamp assembly of the tubing deployment system ofFIG. 2 , deployed to secure the tubing strings ofFIG. 2 ; and -
FIG. 4B is a schematic side view of an example of an articulated chain of the clamp assembly ofFIG. 4A . - The illustrated figures are only exemplary and are not intended to assert or imply any limitation with regard to the environment, architecture, design, or process in which different embodiments may be implemented.
- The present disclosure relates to a tubing deployment system, a method to secure multiple tubing strings, and a weightable collar. More particularly, this disclosure relates to a tubing deployment system having a first tubing string having a first weightable collar and a second tubing string having a second weightable collar. The system facilitates the deployment of two or more strings of coiled tubing in, for example, pipeline intervention applications, and enhances the ability to prevent twisting or binding, and to extract tubing strings from a subsea environment. As such, each of the first weightable collar and the second weightable collar includes an interlocking mechanism and a plurality of receivers spaced radially about an external surface of the collar. The interlocking mechanism of each collar engages a complementary interlocking mechanism on an adjacent collar, thereby orienting the collars and their associating tubing strings with respect to each other. Each of the plurality of receivers is configured to receive a weight to facilitate deployment of the tubing string to which it is coupled.
- Referring generally to the operation of subsea pipelines or wells, a platform or support structure may include a vessel or a floating rig (platform). The platform is often deployed offshore to excavate hydrocarbon resources trapped in underwater formations. Multiple tubing strings may be deployed from the platform at sea level to connect to a tie-in point such as a subsea well. Fluids and particulates may flow from the platform, through the tubing strings, into a subsea manifold, and hydrocarbon resources may flow from the subsea manifold, through the tubing strings, to the platform, where the hydrocarbon resources are collected. Different tubing strings may be deployed to form conduits and return conduits for wellbore fluids including hydrocarbon resources, as well as other types of fluids and/or particulates that may be pumped through the tubing strings. The tubing strings may be rapidly deployed, thereby reducing setup time. The tubing strings may also be rapidly retracted once well operations are complete or in presence of adverse weather conditions.
- In an illustrative embodiment, a tubing deployment system facilitates deployment of multiple tubing strings. More particularly, the tubing deployment system prevents different tubing strings from becoming entangled. The tubing deployment system also inhibits undesirable motion caused by underwater environmental conditions, such as buoyancy, underwater currents, and other types of environmental conditions that the tubing strings may experience during deployment. The tubing deployment system includes at least one clamp assembly to clamp multiple tubing strings together. The tubing deployment system also includes at least one weightable collar with receiving slots (receivers). In some embodiments, receivers are spaced radially about the weightable collar to receive weights such as clump weights. The weights may be selected to have different weights based on the material strength of the tubing string and the amount of downward force desired in consideration of the subsea environment. In some embodiments, the weightable collar includes an interlocking mechanism to secure the weightable collar to another weightable collar of a nearby tubing string. Securing a weightable collar to an adjacent weightable collar effectively couples the tubing strings to which the collars are attached, thereby restricting relative motion between the tubing strings. In some embodiments, multiple weightable collars, each containing weights, are deployed at different depths to secure the tubing strings at intervals along the tubing strings.
- Turning now to the figures,
FIG. 1 is a schematic, side view of a riser-lessoffshore intervention environment 100 withmultiple tubing strings platform 101 to amanifold 114 attached to a wellhead of asubsea well 118 and connected tosubsea pipelines 119. Thepipelines 119 may connect other manifolds (not shown), subsea trees (not shown), or wells (not shown) to themanifold 114. While the system is shown as an intervention system, the disclosure is equally applicable to production and preparation environments. As illustrated inFIG. 1 , theplatform 101 is deployed above themanifold 114. Theplatform 101 includestubing string spools 104 carryingfirst tubing string 108A andsecond tubing string 108B, andtubing string injectors 106. The first and second tubing strings (e.g., coiled tubing) 108A and 108B are fed intotubing string injectors 106. One ormore controllers 110 are communicatively connected to thetubing string injectors 106 and are operable to control thetubing string injectors 106 to deploy or to recover the first andsecond tubing strings - The first and
second tubing strings platform 101 to themanifold 114 to provide a return flow path for hydrocarbon resources.Weightable collars 102, which may include clump weight housings, are deployed at different depths to inhibit undesired motion due to underwater environmental conditions, as previously discussed. Theweightable collars 102 are coupled to the first andsecond tubing strings second tubing strings - In some embodiments, additional tubing strings (not shown) may be deployed from the
platform 101 or from a nearby vessel (not shown). In such embodiments, the additional tubing strings may also connect to themanifold 114 to provide flow paths for pumped fluids or to provide return flow paths for hydrocarbon resources. The additional tubing strings may be secured by additional weightable collars that are interlocked to theweightable collars 102 illustrated inFIG. 1 or one or both of thetubing strings FIG. 1 illustrates three pairs of weightable collars, any number of weightable collars may be deployed at different depths to secure thetubing strings -
FIG. 2 is a schematic, side view of an example of atubing deployment system 200 deployed to secure thetubing strings FIG. 1 . In the embodiment illustrated inFIG. 2 , the first andsecond tubing strings weightable collar 202A and a secondweightable collar 202B, respectively. The first andsecond weightable collars second tubing strings second weightable collars second tubing string first weightable collar 202A and thesecond weightable collar 202B include interlockingmembers 206 that may be engaged to lock together to further secure the first andsecond tubing strings - The
tubing deployment system 200 also includes afirst deflector 210A and asecond deflector 210B overlying to the first andsecond weightable collars second deflectors tubing strings deflectors adjacent weightable collars - In some embodiments, the first and
second tubing strings first clamp assembly 212 and asecond clamp assembly 214. The first andsecond clamp assemblies first tubing string 108A to thesecond tubing string 108B, and clamps configured to secure the first andsecond tubing strings second clamp assemblies clamp assemblies first tubing 108A. In some embodiments, each of theclamp assemblies second tubing string 108B, which allows freedom of motion in a vertical or axial direction. In one of such embodiments, the vertically compliant interface is an articulated chain-type collar, where each link of the collar includes one or more ball bearings or rollers to provide thesecond tubing string 108B with freedom of motion in the vertical direction. - In some embodiments, the
tubing deployment system 200 may include additional clamp assemblies, deflectors, and weightable collars to secure the first andsecond tubing strings tubing deployment system 200 may also include additional clamp assemblies, deflectors, and weightable collars to secure additional tubing strings (not shown) that are deployed by theplatform 101 or by a nearby vessel. Additional details of theweightable collars clamp assemblies FIGS. 3A, 3B, 4A, and 4B . -
FIG. 3A is a schematic, side view of an example of theweightable collars tubing deployment system 200 ofFIG. 2 that includes several radial receivers for receiving weights. In the embodiment illustrated inFIG. 3A , thefirst weightable collars 202A includes a hollow passage that allows thefirst tubing string 108A to pass through. Thefirst weightable collar 202A may include a clamp or a mechanism to fixedly secure thefirst weightable collar 202A to thefirst tubing string 108A. - In the embodiment illustrated in
FIG. 3A , the first weightable collar includesmultiple weight receivers 204 radially spaced across a side surface of the first weightable collar. Each of theweight receivers 204 may receive a weight. The number ofweight receivers 204 occupied byweights 220 and the weight of eachweight 220 are dependent on a number of factors including, but not limited to the material strength of thefirst tubing string 108A, the depth of theweightable collar 202A, the number of other weightable collars attached to thetubing string 108A or interlocked to thefirst weightable collar 202A, and environmental factors discussed in the previous paragraphs. In some embodiments, eachreceiver 204 includes a securing mechanism such as an interlock or latch (not shown), configured to secure theweight 220 once theweight 220 is inserted into thereceiver 204 to prevent theweight 220 from falling out of thefirst weightable collar 202A. In such embodiments, the interlock is further configured to disengage theweight 220 when theweight 220 is removed from thefirst weightable collar 202A. Thefirst weightable collar 202A also includes a first interlockingmember 206A, which is configured to engage thefirst weightable collar 202A with another weightable collar, such as thesecond weightable collar 202B. - The
second weightable collar 202B, similar to thefirst weightable collar 202A, also includes a hollow interior, a mechanism to secure thesecond tubing string 108B,receivers 204 for receiving theweights 220, and asecond interlocking member 206B. The first andsecond interlocking members second weightable collars second interlocking members second weightable collars FIG. 3A , a pinnedcoupling 207 is installed around the first andsecond interlocking members shear pin 208 is inserted into the pinnedcoupling 207 to secure the first interlockingmember 206A with thesecond interlocking member 206B. The tensile strength of the shear pin may be based on a variety of factors, such as, the material strength of the first andsecond tubing strings tubing strings - In an exemplary embodiment, the
shear pin 208 is selected to have a predetermined yield strength that results in failure in response to the failure of one of the tubing strings 108A or 108B. For example, if one of the tubing strings 108A or 108B fails when both the first andsecond interlocking members tubing string weightable collars other tubing string shear pin 208 is manufactured to have a yield strength that is less than the force that would be exerted on to theshear pin 208 due to failure of one of the first or second tubing strings 108A or 108B. In such an example, theshear pin 208 would fail as a result of the force generated by the failed tubing string (108A or 108B) force, thereby allowing the first andsecond interlocking members first tubing string 108A will result in failure of thesecond tubing string 108B. Additional embodiments of the first andsecond weightable collars FIG. 3B . -
FIG. 3B is a schematic, top view of another embodiment of a weightable collar assembly of the tubing deployment system ofFIG. 2 that includes severalradial receivers 304 for receivingweights 320. In the embodiment illustrated inFIG. 3B , thereceivers 304 are radially spaced and extend from the top of the first andsecond weightable collars Weights 320 may be inserted radially from a side or downwardly from above into thereceivers 304. In most respects, the embodiment ofFIG. 3B functions similarly to that ofFIG. 3A . - The first and
second weightable collars second interlocking members second interlocking members second weightable collars engagement surface 309 to allow ashear pin 308 to slide into both hollow passages to couple the first andsecond interlocking members second interlocking members shear pin 308 includes external threads and is rotatable about an axis that is approximately perpendicular to the longitudinal axes of the first andsecond tubing strings second interlocking members shear pin 308 can be removed from the hollow passages of the first andsecond interlocking members second weightable collars - In some embodiments, each of the
weightable collars weightable collars FIGS. 3A and 3B includes 8 receivers, the of theweightable collars weightable collars weightable collars FIGS. 3A and 3B . -
FIG. 4A is a schematic top view of anexample clamp assembly tubing deployment system 200 ofFIG. 2 , deployed to secure thetubing strings FIG. 1 . As illustrated inFIG. 4A , theclamp assembly 400 includes an internally threadedrod 402 having externally threadedextendable members rod 402 and externally threadedextendable members second tubing strings first tubing string 108A to thesecond tubing string 108B. The firstextendable member 403A is coupled tofirst clamp 406, which is operable to engage thefirst tubing string 108A. When thefirst clamp 406 engages thefirst tubing string 108A, thefirst clamp 406 firmly grips thefirst tubing string 108A and theclamp assembly 400 is fixedly secured to thefirst tubing string 108A. Theclamp assembly 400 remains fixedly secured to thefirst tubing string 108A until thefirst clamp 406 disengages from thefirst tubing string 108A. - The second
extendable member 403B is connected to asecond clamp 408 that is operable to engage thesecond tubing string 108B. When both the first andsecond tubing strings second tubing string tubing string second clamp 408 may be fitted withball bearings 410. When thesecond clamp 408 is in the engage position, thesecond clamp 408 wraps around thesecond tubing string 108B, thereby inhibiting horizontal motion of thesecond tubing string 108B. However, theball bearings 410 provide thesecond tubing string 108B with freedom of motion in the vertical direction. As such, if thesecond tubing string 108B fails, thesecond tubing string 108B would slide through thesecond clamp 408 without overloading and inducing failure of thefirst tubing string 108A. - In some embodiments, the second clamp is fitted with rollers. The rollers, similar to the
ball bearings 410, also provide thesecond tubing string 108B with freedom of motion in the vertical direction. In some embodiments, theclamp assembly 400 includes additional sections with additional clamps (not shown) that are operable to engage additional tubing strings. In some embodiments, both the first and thesecond clamps second tubing strings second clamps second tubing strings clamp assembly 400 to the first andsecond tubing strings second tubing strings tubing strings -
FIG. 4B is a schematic side view of an example of an articulatedchain 404 of theclamp assembly 400 ofFIG. 4A . In some embodiments, theclamp assembly 400 ofFIG. 4A includes an articulatedchain 404 that extends from thefirst tubing string 108A to thesecond tubing string 108B. In some embodiments, the articulatedchain 404 is connected to thefirst clamp 406 at one end and includes multiple links, where each link includes aclamp 412 andball bearings 410. In other embodiments, each link includes aclamp 412 and rollers. In some embodiments, thefirst clamp 406 engages thefirst tubing string 108A to fixedly secure the articulated chain to thefirst tubing string 108A and one of theclamps 412 wraps around thesecond tubing string 108B. In another one of such embodiments,different clamps 412 of the articulated chain engage both the first and thesecond tubing strings - The above-disclosed embodiments have been presented for purposes of illustration and to enable one of ordinary skill in the art to practice the disclosure, but the disclosure is not intended to be exhaustive or limited to the forms disclosed. Many insubstantial modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the disclosure. For instance, although the flowcharts depict a serial process, some of the steps/processes may be performed in parallel or out of sequence, or combined into a single step/process. The scope of the claims is intended to broadly cover the disclosed embodiments and any such modification. Further, the following clauses represent additional embodiments of the disclosure and should be considered within the scope of the disclosure:
- Clause 1: a tubing deployment system comprising a first tubing string having a first weightable collar; and a second tubing string having a second weightable collar, wherein each of the first weightable collar and second weightable collar comprises an interlocking member and a plurality of receivers spaced radially about an external surface of the weightable collar, each of the plurality of receivers being configured to receive a weight.
- Clause 2: the system of clause 1, further comprising a clamping member having a fixed interface with the first tubing string, the fixed interface comprising a clamp.
- Clause 3: the system of any combination of
clauses 1 and 2, comprising a clamping member having a vertically compliant interface with the second tubing string. - Clause 4: the system of any combination of clauses 1-3, wherein the vertically compliant interface comprises an articulated chain.
- Clause 5: the system of any combination of clauses 1-4, wherein each link of the articulated chain comprises one or more ball bearings.
- Clause 6: the system of any combination of clauses 1-5, wherein each link of the articulated chain comprises one or more rollers.
- Clause 7: the system of any combination of clauses 1-6, further comprising a first deflector overlying to the plurality of receivers of the first weightable collar and coupled to the first tubing string, and a second deflector overlying to the plurality of receivers of the second weightable collar and coupled to the second tubing string.
- Clause 8: the system of any combination of clauses 1-7, wherein the interlocking member of the first weightable collar and the interlocking member of the second weightable collar are engagable along an engagement surface to secure the interlocking member of the first weightable collar to the interlocking member of the second weightable collar.
- Clause 9: the system of any combination of clauses 1-8, further comprising a pinned coupling, wherein the first interlocking member is secured to the second interlocking member by a shear pin.
- Clause 10: the system of any combination of clauses 1-9, further comprising: a first clamping member having a fixed interface with the first tubing string, the fixed interface comprising a clamp; a second clamping member having a vertically compliant interface with the second tubing string; a first deflector overlying to the plurality of receivers of the first weightable collar and coupled to the first tubing string; and a second deflector overlying to the plurality of receivers of the second weightable collar and coupled to the second tubing string, wherein the first interlocking member of the first weightable collar extends from the first weightable collar and the interlocking member of the second weightable collar extends from the second weightable collar.
- Clause 11: the system of any combination of clauses 1-10, further comprising a releasable coupling between the interlocking members of the first and the second weightable collars.
- Clause 12: a weightable collar, the weightable collar comprising: a hollow interior for receiving a tubing string; an interlocking mechanism; and a plurality of receivers spaced radially about an external surface of the weightable collar, each receiver of the plurality of receivers being configured to receive a weight.
- Clause 13: the weightable collar of clause 12, wherein the weight is radially and inwardly inserted within a receiver of the plurality of receivers.
- Clause 14: the weightable collar of any combination of the clauses 12 and 13, wherein the receiver comprises a securing mechanism configured to engage the inserted weight.
- Clause 15: the weightable collar of any combination of the clauses 12 and 14, wherein the weight is radially and downwardly inserted into one or more receivers of the plurality of receivers.
- Clause 16: the weightable collar of any combination of the clauses 12-15, wherein the interlocking mechanism is configured to engage an adjacent interlocking mechanism of an adjacent weightable collar.
- Clause 17: the weightable collar of any combination of the clauses 12-16, wherein the interlocking mechanism comprises a shear pin to engage the adjacent interlocking mechanism.
- Clause 18: a method of securing at least two tubing strings, the method comprising: attaching the first tubing string to a first weightable collar, the first weightable collar comprising an interlocking member and a plurality of receivers spaced radially about an external surface of the first weightable collar, each of the plurality of receivers being configured to receive a weight; attaching a second tubing string to a second weightable collar, the second weightable collar comprising an interlocking member and a plurality of receivers spaced radially about an external surface of the second weightable collar, each of the plurality of receivers being configured to receive a weight; inserting at least one weight into one or more of the plurality of receivers of the first weightable collar and the second weightable collar; and engaging the first interlocking member with the second interlocking member.
- Clause 19: the method of clause 18, further comprising: engaging a first deflector to the first tubing string, the first deflector overlying to the plurality of receivers of the first weightable collar and coupled to the first tubing string; and engaging a second deflector to the second tubing string, the second deflector overlying to the plurality of receivers of the second weightable collar and coupled to the second tubing string.
- Clause 20: the method of any combination of clauses 18 and 19, wherein each of the first and second interlocking members comprises a hollow passage, and wherein engaging the first interlocking member with the second interlocking member further comprises: engaging the first and second interlocking members along an engagement surface to align the hollow passages of the first and second interlocking members; and inserting a shear pin through the hollow passages of the first and second interlocking members.
- As used herein, a “platform” is defined to include oil rigs, vessels, and any other support structure operable to deploy tubing strings in a subsea environment.
- As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprise” and/or “comprising,” when used in this specification and/or the claims, specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. In addition, the steps and components described in the above embodiments and figures are merely illustrative and do not imply that any particular step or component is a requirement of a claimed embodiment.
- It should be apparent from the foregoing that embodiments of an invention having significant advantages have been provided. While the embodiments are shown in only a few forms, the embodiments are not limited but are susceptible to various changes and modifications without departing from the spirit thereof.
Claims (20)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2015/067066 WO2017111899A1 (en) | 2015-12-21 | 2015-12-21 | Method and system for deployment of tubing strings for riser-less applications |
Publications (1)
Publication Number | Publication Date |
---|---|
US20180266194A1 true US20180266194A1 (en) | 2018-09-20 |
Family
ID=59090789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/755,463 Abandoned US20180266194A1 (en) | 2015-12-21 | 2015-12-21 | Method and system for deployment of tubing strings for riser-less applications |
Country Status (3)
Country | Link |
---|---|
US (1) | US20180266194A1 (en) |
GB (1) | GB2560451A (en) |
WO (1) | WO2017111899A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11486203B2 (en) * | 2018-03-06 | 2022-11-01 | Tios As | Well operations using flexible elongate members |
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Also Published As
Publication number | Publication date |
---|---|
GB201805725D0 (en) | 2018-05-23 |
WO2017111899A1 (en) | 2017-06-29 |
GB2560451A (en) | 2018-09-12 |
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