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Match Document Document Title
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...
8720545 Continuous flow drilling systems and methods  
A method for drilling a wellbore includes drilling the wellbore by injecting drilling fluid into a top of a tubular string disposed in the wellbore at a first flow rate and rotating a drill bit....
8684073 Device for injection and stimulation of fluids in a well bore  
Present invention regards a device for injection and stimulation of fluids in a wellbore, where the device is typically is installed in Christmas trees, wellheads or subsea. The device comprises...
8627890 Rotating continuous flow sub  
A method for drilling a wellbore includes drilling the wellbore by advancing the tubular string longitudinally into the wellbore; stopping drilling by holding the tubular string longitudinally...
8622138 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well  
Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates...
8590640 Apparatus and method to maintain constant fluid circulation during drilling  
An apparatus for maintaining constant circulation of drilling fluid includes a valve section (5) at the top of each section of drill pipes to be connected to or removed from the drill string. The...
8540018 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well  
Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates...
8469086 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well  
Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates...
8272435 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well  
Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates...
8066063 Capillary injector  
A mineral extraction system includes a branch having a branch passage, a diverter coupled to the branch passage, and a capillary injection conduit disposed inside to the branch passage. A method...
8056621 Master ball valve with integrated hanger  
A master ball valve with an integrated main hanger below the valve which may be used to hang jointed tubing, coil tubing, or electrified coil tubing for connection with an electric submersible pump.
8033338 Wellbore continuous circulation systems and method  
Systems and methods for continuously circulating fluid, e.g., drilling mud, through a wellbore tubular string, the systems in certain aspects including a sub positionable in fluid communication...
7971637 Dual mini well surface control system  
A well surface control system for use with various types of work strings such as, but not limited to, drill strings, coiled tubing, snubbing pipe, electric line, production tubing, and wireline....
7931079 Tubing hanger and method of compensating pressure differential between a tubing hanger and an external well volume  
A tubing hanger and method for reducing loads and stresses on sealing boundaries in a tubing hanger is provided. The tubing hanger has an inner cavity that is sealed with respect to an external...
7857062 Configurable wellhead system with permanent fracturing spool and method of use  
A configurable wellhead system is used to efficiently accomplish well completion, re-completion or workover. The configurable wellhead system includes a permanent fracturing spool that is mounted...
7770653 Wellbore bypass method and apparatus  
A valve (136, 136′, 136″, 200) adapted to replace an existing valve of a wellhead (114). Valve (136, 136′, 136″, 200) can have similar dimensions as the existing valve it replaces to utilize...
7578351 Configurable wellhead system with permanent fracturing spool and method of use  
A configurable wellhead system is used to efficiently accomplish well completion, re-completion or workover. The configurable wellhead system includes a permanent fracturing spool that is mounted...
7341109 Hydraulic flow control system with an internal compensator sleeve  
A compensator sleeve assembly for use with a hydraulic extension system used to handle safety valves designed to shut off high pressure upward flow through drill pipe or tubing. The compensator...
7299866 Apparatus and method for cleaning out sand from an underbalanced hydrocarbon producing well  
An apparatus and method is used in the cleaning out of sand in underbalanced gas wells. The present invention includes a valve subassembly equipped with an emergency shutin device to remotely...
7163064 Surface flow valve and method  
A surface flow control system for a well. The system comprises a main housing having a main bore there through, and a first port communicating with the main bore. The system further comprises a...
7111687 Recovery of production fluids from an oil or gas well  
A method and assembly for recovering fluids from, or injecting fluids into, a well having a christmas tree; the fluids typically flow between first and second flowpaths in a continuous path. The...
7096937 Flow completion system  
A flow completion system for controlling the flow of fluid from a well bore comprises a tubing spool which includes a central bore that extends axially therethrough and a production outlet which...
6966383 Horizontal spool tree with improved porting  
The horizontal spool tree assembly 10 controls fluid flow through a production tubing string 18 within a well. The horizontal spool tree assembly is adapted for use with a workover string for...
6964304 Technique for maintaining pressure integrity in a submersible system  
A technique for maintaining pressure integrity within a submersible system. The system utilizes a pressure housing with an internal component, such as a valve. The internal component is actuated...
6918446 One-trip wellhead installation systems and methods  
Methods and devices are described for efficiently installing sea-borne wellhead components and tying back sub-sea wellhead components with them. In specific aspects, a single running and setting...
6899172 Abrasion resistant frac head  
A frac head comprising a main body with plural side entries oriented around the main body such that flow from each of the side entries meets flow from an opposing side entry in the internal bore....
6851478 Y-body Christmas tree for use with coil tubing  
The invention provides a Y-body Christmas tree for use with coil tubing and other wellhead components which integrates components of a Christmas tree, while providing for coil tubing access...
6769490 Downhole surge reduction method and apparatus  
A method and apparatus for use in the oil well industry for running in drilling/production liners and sub-sea casings down a borehole through drilling fluid on a drill pipe using a running tool...
6763891 Production tree with multiple safety barriers  
The wellhead assembly has a production tree with multiple safety barriers. A tubing hanger lands and seals in the bore of the tree. The tubing hanger has a lateral production flow passage that...
6742597 Safety check valve for coiled tubing  
A spring-loaded check valve, mounted between a coiled tubing stripper and a BOP stack seals well bore pressure from the atmosphere when the coiled tubing is removed from the well bore. When no...
6729392 Tubing hanger with ball valve in the annulus bore  
A tubing hanger is provided for suspending a tubing hanger from a wellhead housing. The tubing hanger body includes a production bore and an annulus bore, a valve opening inlet port, a valve...
6715555 Subsea well production system  
A tubing hanger positioned within the bore of a wellhead body has a vertical bore from which a tubing string may be suspended within a well bore. When the hanger is landed, a fluid passageway in...
6626239 Internal gate valve for flow completion systems  
A gate valve for a component which includes an elongated body and a flow passage extending generally longitudinally through the body, the flow passage including a generally lateral first branch...
6488083 Tubing hanger system  
A tubing hanger for a flow completion system which comprises a Christmas tree connected above a wellhead housing that includes a central bore in which the tubing hanger is supported, the tubing...
6470971 Tubing head control and pressure monitor device  
A tubing hanger and wellhead have features for controlling and monitoring fluid pressure to downhole equipment. The tubing hanger has an internal vertical passage. A hydraulic line connects to the...
6453995 Tubing hanger saddle valve  
A tubing hanger incorporates a flow control valve that is ordinarily found in a horizontal christmas tree. A branch passage forming a production fluid outlet has a mouth that intersects with a...
6145594 Gate valve for subsea completion system  
A caisson gate valve (10) fitting within an outer casing (12) extending downwardly from a subsea wellhead below the sea floor is disclosed. The gate valve (10) includes a valve body or block (14)...
6112810 Remotely controlled assembly for wellbore flow diverter  
A wellbore flow diverter has been invented that, in certain aspects, has a housing with a main bore therethrough for fluid flow and a diverter bore therethrough for diverted fluid flow, the...
6076605 Horizontal tree block for subsea wellhead and completion method  
A subsea wellhead assembly has a tubular housing having a sidewall, an axial bore, and a housing lateral passage extending from the bore through the sidewall. A blocking sleeve fits around the...
6050339 Annulus porting of horizontal tree  
A horizontal tree has a vertical bore and a horizontal production passage and is landed in a wellhead housing. A tubing hanger lands in the bore and has a vertical passage and a horizontal passage...
6044904 Wellhead assembly  
A wellhead assembly provides a connection between a protruding wellhead pipe of a landfill and piping that leads to treatment, disposal, or recovery equipment, or the like. The wellhead assembly...
6039119 Completion system  
A wellhead has, instead of a conventional Christmas tree, a spool tree (34) in which a tubing hanger (54) is landed at a predetermined angular orientation. As the tubing string can be pulled...
5988282 Pressure compensated actuated check valve  
A horizontal tree having a vertical bore and a horizontal production passage is landed in a wellhead housing. A tubing hanger lands in the bore and has a vertical passage and a horizontal passage...
5960881 Downhole surge pressure reduction system and method of use  
A system for reducing pressure while running a casing liner, hanging a casing liner from a casing and cementing the liner in a borehole during a single trip downhole is disclosed. Some of the...
5878812 Misaligning wellhead system  
A misaligning wellhead system for use on the surface end of well production tubing in a well produced by a pump driven by a pumping unit operated polished rod extending through the wellhead to the...
5875841 Oil well blow-out preventer  
An oil well blow-out preventer for use on an oil well equipped with a well casing, a wellhead, a production tubing string, and a pump rod receivable within the production tubing string. The...
5865246 Ball valves  
There is disclosed a ball valve (5) particularly for use in oil/gas wells. Known valves suffer from a number of problems, e.g such as high actuating forces and seat failure due to applied load...
5623994 Well head cutting and capping system  
Systems and methods for cutting a well casing and then capping the cut well casing are provided. A well casing cutting assembly having a tensioned wire cutting element may first be moved into...
5617917 Integral blowout preventer and flow tee  
A wellhead flow tee and blow out preventing device having housings joined providing an integral unit. The housing includes a first upper portion with an upper mounting flange on an upper end...
5615737 Apparatus for insertion of full bore tools into an earth borehole  
Apparatus for inserting full bore tools into an earth borehole, such as oil and gas wells, includes: a blowout preventer assembly superimposed on the wellhead of the borehole; a seal body having...

Matches 1 - 50 out of 97 1 2 >