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9022127 Riser system comprising pressure control means  
The present invention regards a riser system comprising at least one riser extending from a subsea wellhead to a surface vessel, tension means for keeping the at least one riser tensioned, which...
8997872 Cap assembly for use with a tubing spool of a wellhead  
A cap assembly for use with a tubing spool of a wellhead has a body with an interior passageway body and a mandrel extending upwardly therefrom. The body has a connector extending from an opposite...
8978772 Casing hanger lockdown with conical lockdown ring  
A seal seals an annulus in a subsea assembly between a wellhead and a casing hanger landed on a shoulder within a bore of the wellhead. The seal includes a casing hanger seal ring disposed within...
8955594 Multiplex tubing hanger  
A subsea wellhead assembly having a tubing hanger set in a tubing hanger spool and a ring with axial passages set in an upper end of the tubing hanger. The wellhead assembly includes a production...
8950483 System and method for umbilical-less positional feedback of a subsea wellhead member disposed in a subsea wellhead assembly  
A positional feedback system includes a seal assembly coupled to a running tool, the seal assembly having a seal ring and an energizing ring positioned between a hanger and a subsea wellhead. The...
8936092 Seal system and method  
A system in some embodiments includes a system, having a seal assembly, including an inner energizing ring, an outer energizing ring, a load ring disposed between the inner energizing ring and the...
8925639 Seal with bellows style nose ring and radially drivable lock rings  
A seal assembly between a wellhead housing having a bore and a casing hanger, has an inner seal leg for sealing against a hanger and an outer seal leg for sealing against the housing. A bellows...
8925635 Recovery valve  
A tubing hanger landing system includes a tubing hanger running tool, a locking flowline to lock the tubing hanger running tool into a tubing hanger, and a lower body shear joint having a recovery...
8893800 Apparatus for, and method of, landing items at a well location  
An apparatus for, and method of, lowering items from a drilling rig to a well located below it through the use of a landing string comprised of drill pipe having an enlarged diameter section with...
8863847 Adjustable riser suspension and sealing system  
An adjustable riser suspension system for suspending a riser under tension including a riser hanger, a mating sleeve rotationally coupled to the riser hanger, a ratchet-latch sleeve located inside...
8851182 Wellhead hanger shoulder  
A well production system including a wellhead and a first casing string supported from a first casing hanger landed on a shoulder in the wellhead bore. A loading shoulder assembly is installable...
8851183 Casing hanger lockdown slip ring  
A seal seals an annulus in a subsea assembly between a wellhead and a casing hanger landed on a shoulder within a bore of the wellhead. The seal includes a casing hanger seal ring disposed within...
8833461 Expandable solid load ring for casing hanger  
A subsea wellhead assembly includes a housing with a bore. A hanger is lowered into the housing, the hanger having at least one downward facing load shoulder. An expandable load ring is carried on...
8826988 Latch position indicator system and method  
Latch position indicator systems remotely determine whether a latch assembly is latched or unlatched. The latch assembly may be a single latch assembly or a dual latch assembly. An oilfield device...
8813852 Wellhead annulus monitoring  
A subsea wellhead assembly includes a production casing hanger defining a series of passageways from an annulus between a production casing string and an outer casing to a region that can...
8783363 Multifunctional key design for metal seal in subsea application  
A wellbore sealing assembly can include a sealing ring, an energizing ring, and a multifunctional key for engaging the sealing ring and the energizing ring. The multifunctional key can have a key...
8746347 Subsea wellhead providing controlled access to a casing annulus  
A subsea wellhead assembly includes a wellhead body which disposed to support an isolation sleeve for a production tree and to support below the isolation sleeve a production casing hanger for a...
8746350 Tubing hanger shuttle valve  
A wellhead assembly made up of a wellhead housing, a production tree mounted on the wellhead housing, tubing suspended into a wellbore from within the wellhead housing, and an annulus between the...
8720586 Hybrid seal  
A casing hanger seal assembly is lowered into a pocket between a casing hanger and a wellhead housing while in a run-in position. The seal assembly has a metal-to-metal upper seal ring and an...
8720582 Apparatus and methods for providing tubing into a subsea well  
In some embodiments, apparatus useful for providing tubing into an underwater well includes at least one surface injector configured to control movement of the tubing into and out of the well and...
8714263 Lightweight and compact subsea intervention package and method  
The present invention discloses apparatus and methods for a lightweight subsea intervention package that may be installed using vessels with a smaller lifting capacity than semi-submersible...
8714935 Method of running a down hole rotary pump  
A method of running a down hole rotary pump using a top drive, sucker rod or any drive shaft from surface. A first step involves providing a gear box having an input end and an output end. The...
8689879 Fluid displacement methods and apparatus for hydrocarbons in subsea production tubing  
The method for subsea well intervention includes creating a lubricator section within the production tubing of the well. The lubricator section can then be flushed of hydrocarbons facilitating...
8668021 Energizing ring nose profile and seal entrance  
A wellhead seal assembly that forms a metal-to-metal seal between inner and outer wellhead members. A metal seal ring has inner and outer walls separated by a slot. An elastomeric seal is located...
8662184 Multi-section tree completion system  
A subsea well production system for a well including a subsea wellhead. The system includes a multi-section production tree that includes a landing section engageable with the subsea wellhead and...
8662185 Active casing hanger hook mechanism  
A subsea wellhead assembly includes a housing with a bore. A hanger is lowered into the housing, the hanger having at least one centralizing finger with a hook for engaging a corresponding hook an...
8640777 Expandable anchoring mechanism  
A bridging hanger with an expandable anchoring mechanism lands on a casing hanger in a subsea wellhead and actuates to anchor to the casing hanger. The anchoring mechanism includes a tubular main...
8636072 Wellhead assembly having seal assembly with axial restraint  
A wellhead system comprising a seal with a restraining member adapted to cooperate with a housing to restrict axial movement of the seal. The seal is adapted to form a seal between the housing,...
8631873 Tubing hanger—production tubing suspension arrangement  
A tubing hanger body made from Non-CRA steel coupled to production tubing made from CRA material. The coupling includes pin threads at the top end of the production tubing which are arranged to be...
8616287 Apparatus for improving well safety and recovery and installation process thereof  
Apparatus for improving the safety and recovery of wells to be installed in oil wells comprising a Deep Set Well Head (DSWH), a Casing Receptacle (1), a Deep Set Tubing Hanger (DSTH) (2),...
8590624 Bridging hanger and seal running tool  
A running tool sets and pressure tests a bridging hanger and a packoff in a single trip. The running tool has a stem, an inner body, and a piston. The inner body is connected to the stem so that...
8590625 Subsea completion with a tubing spool connection system  
A subsea completion for a well is presented that includes a tubing spool, a tubing hanger, a fluid coupling, an electrical coupling, a control system, a valve, and a production tree. The tubing...
RE44520 Tubing hanger with annulus bore  
A completion system for a subsea well includes a tree having a generally cylindrical wall forming an internal bore therethrough and a production port extending laterally through the wall in...
8540029 System and apparatus for drilling riser conduit clamp  
A clamp for securing about annular casing via a centrally oriented aperture having a radius includes at least one aperture for grasping a longitudinally extending accessory disposed about the...
8522880 Floating offshore structure for hydrocarbon production  
A floating structure includes a riser support system. The riser support system includes multiple carts, each suitable for moveably connecting a risers to the riser support system. A cart includes...
8408309 Running tool  
An embodiment of a running tool for setting and testing a packoff seal of a well pipe hanger has an elongated stem having an axial passage, a body, a cam, a cam tail, a stem engagement element,...
8403056 Drill pipe running tool  
A system and method for verifying support hanger orientation within a wellhead housing. In an example, a profile is included at a designated location on an inner surface of the wellhead housing....
8381818 Apparatus for, and method of, landing items at a well location  
An apparatus for, and method of, lowering items from a drilling rig to a well located below it through the use of a landing string comprised of drill pipe having an enlarged diameter section with...
8376057 Tubing hanger seal  
A wellhead assembly including a wellhead housing. The wellhead housing comprises a throughbore having a recessed sealing area and a tubing hanger positioned in the throughbore. A seal is...
8322428 Casing hanger nesting indicator  
A casing hanger nesting indicator generates a signal to notify personnel on the surface that a wellhead member has properly landed on a predetermined surface within the wellbore. The casing hanger...
8286711 Running tool that prevents seal test  
A running tool sets a casing hanger packoff and ensures that the packoff is not pressure tested unless the proper setting stroke was made by the running tool. The running tool has a stem, an inner...
8276671 Bridging hanger and seal running tool  
A running tool sets and pressure tests a bridging hanger and a packoff in a single trip. The running tool has a stem, an inner body, and a piston. The inner body is connected to the stem so that...
8261837 Adjustable hanger for inner production riser  
A string of conduit extending from a subsea wellhead assembly to a surface wellhead assembly on a platform has a plurality of grooved profiles on an upper portion of the conduit. Each profile is...
8235122 Combination well pipe centralizer and overpull indicator  
A subsea wellhead assembly includes an outer wellhead member with a bore containing at least one conical generally upward facing load shoulder that inclines relative to an axis of the bore. The...
RE43262 Retaining apparatus for use in a wellhead assembly and method for using the same  
A retaining apparatus, in particular an internal tree cap, for use in a wellhead having a central bore and first and second retaining means, such as a shoulder and a groove, within the bore of the...
8104541 Apparatus and method for processing fluids from a well  
A system, including a first module (35b) configured to process fluid from a well, wherein the first module (35b) includes a processing device coupleable to a manifold (5), a first access tunnel...
8104337 Christmas tree with internally positioned flowmeter  
A measurement device is disclosed which includes a structure adapted to be removably coupled to a Christmas tree, a sleeve operatively coupled to the structure and a flowmeter positioned at least...
8047295 Lightweight device for remote subsea wireline intervention  
In one illustrative embodiment, the present invention is directed to a device adapted to be positioned adjacent an end of a tool housing of a subsea lubricator, wherein the device includes a...
8006764 Adjustable threaded hanger  
An adjustable hanger for retaining in tension casing and tubing extending between a subsea wellhead and a surface wellhead on a platform.
7992434 Christmas tree with internally positioned flowmeter  
A measurement device is disclosed which includes a structure adapted to be removably coupled to a Christmas tree, a sleeve operatively coupled to the structure and a flowmeter positioned at least...

Matches 1 - 50 out of 241 1 2 3 4 5 >