Matches 1 - 50 out of 151 1 2 3 4 >


Match Document Document Title
7849920 System and method for optimizing production in a well  
For optimizing well production, intervals are selected along a deviated wellbore, and a well test and treatment string is deployed in the wellbore. Each interval is then isolated to enable...
7708074 Downhole valve for preventing zonal cross-flow  
A flow control valve for use in a downhole completion tubing string, where the control valve prevents cross flow between producing zones. The control valve comprises a housing forming a plenum...
7644757 Fixed-point packoff element with primary seal test capability  
A fixed-point packoff element for a full-bore pressure isolation tool supports a primary seal and a test seal to permit the primary seal to be tested by injecting test fluid through a side port of...
7640974 Spool apparatus to connect to underground well pipe  
Spool apparatus for use in an underground well having casing, comprising a body sized for travel in the well casing, the body defining a well fluid flow duct having a downward facing entrance and a...
7293437 Gasket and washing machine using the same  
A drum washing machine having a gasket to prevent leakage of water in the tub and the laundry from being stuck in a laundry opening part. The washing machine including a cabinet having a first...
7278493 Auto entry guide  
Systems and methods for guiding a seal assembly associated with a string of production tubing, or a tubular member generally, into a receptacle within a wellbore. The muleshoe of a seal assembly is...
7231970 Non-rotational casing hanger and seal assembly running tool  
A non-rotational casing hanger and seal assembly running tool for use in oil and gas drilling operations has a mandrel and a tool body that is carried by the mandrel. The tool body supports a...
7216872 Seal for use with pipe and flange assemblies  
The invention relates to a seal for use with a pipe and flange assembly. The seal is intended to prevent leakage during axial movement of the pipe relative to a flange. The invention comprises a...
7198099 Method and system for injecting a treatment fluid into a well  
A system for injecting a treatment fluid into a well, the system includes: a surface controlled subsurface safety valve; a valve control conduit which extends from the surface controlled subsurface...
7191833 Sand control screen assembly having fluid loss control capability and method for use of same  
A sand control screen assembly (60) that is positionable within a wellbore includes a base pipe (62) having at least one opening (64) that allows fluid flow therethrough and a filter medium (66)...
7128157 Method and apparatus for treating a well  
The present invention generally relates to a method and an apparatus for stimulating the production of an existing well. In one aspect, a method of treating a well is provided. The method includes...
7124829 Tubular expansion fluid production assembly and method  
An expansion-set fluid production assembly transfers well fluids from a casing string 12 to a production tubing string 112. A tubular anchor 72 and tubular expander 70 may be positioned downhole on...
6802371 Template and system of templates for drilling and completing offset well bores  
One or more templates are provided for circulating fluids in a main well bore and for drilling and completing at least one offset well bore from the main well bore. Each template has a body, an...
6745846 Expandable downhole tubing  
The present invention relates to portions of casing that are inserted into a wellbore. The casing portions are provided with a protected portion in which a friction and/or sealing material can be...
6722426 Gasket with multiple sealing surfaces  
A metal seal for a wellhead assembly has upper and lower legs extending in opposite directions from each other and a rib extending radially outward from a junction of the legs. A first conical band...
6513601 Method for setting a packer in a well bore, and a packer  
The invention relates to a method for setting a packer (7) in a well bore (1), wherein a production tubing (4) with a packer (7) is located in the well bore (1). Abrading means (11) of the packer...
6494259 Downhole flame spray welding tool system and method  
A downhole apparatus and method for depositing metal at a desired area in a well casing. In one embodiment the apparatus comprises an oxygen tank filled with oxygen, a fuel tank filled with fuel,...
6382324 One trip seal latch system  
A system for permitting deployment of a polished bore receptacle, seal stack and production tubing in a single downhole trip into a wellbore. The system includes a polished bore receptacle,...
6318471 Method for installing tubular members axially into the earth  
A method is disclosed for installing a tubular member, having an upper end and a closed lower end, axially into and through an over-pressured region of the earth by using a mandrel to drive the...
6283218 Locating and locking mandrel for flow control device  
A locating and locking mandrel and associated nipple provide for positioning an item of equipment in large bore and high weight conditions. In a described embodiment, a locating and locking mandrel...
6247537 High pressure fluid seal for sealing against a bit guide in a wellhead and method of using  
High pressure fluid seals for sealing against a bit guide in wellhead and a method of using the seals are described. The high pressure fluid seals are primarily intended for use with a blowout...
6202745 Wellhead apparatus  
Wellhead apparatus is shown to comprise a casing hanger releasably latched to a running tool for lowering, landing and locking within the bore of a housing so as to suspend an inner casing which is...
5996697 Static wellhead plug  
A plug is provided which is specially adapted for statically setting a plug portion within an internal profile formed in a wellhead. In an illustrated preferred embodiment, the plug portion is set...
5988284 Method and apparatus for enhancing well performance  
A shroud which surrounds a submersible pump is lowered into a water well along with a column pipe which carries the pump. The pump is located below the top of a screen which provides a perforated...
5909769 Fluid loss device  
A fluid loss device has a housing, a seal assembly, a running tool, and a plug. The housing of the fluid loss device is placed in a production string before a well bore is completed. The plug is...
5865255 Full bore nipple and associated lock mandrel therefor  
An improved full bore nipple and associated lock mandrel provides enhanced sealing capability in tubing strings positioned in subterranean wells. In a described embodiment of the full bore nipple,...
5765638 Tool for use in retrieving an essentially cylindrical object from a well bore  
There are disclosed two embodiments of a tool for use in retrieving a cylindrical object which is stuck within a well bore, or, in the event the object cannot be retrieved, releasing therefrom to...
5735344 Tubing hanger with hydraulically energized metal annular seal with new design tubing hanger running tool  
A tubing hanger has an exterior surface and carries a seal arranged inwardly of this surface. The seal has two sealing portions and, when the hanger is located in a wellhead, the seal is engaged by...
5617918 Wellbore lock system and method of use  
A lock assembly includes radially movable engagement or latch members configured to engage a profile within a subsurface nipple, and further includes one or more sealing assemblies. The sealing...
5542475 Blanking plug assembly  
The method and apparatus includes lowering a blanking plug assembly into the bore of an oilfield tubular member and inserting a sealing assembly on the blanking plug assembly into the seal bore of...
5518072 Downhole tool for assisting in separating and reconnecting well tubing  
A downhole tool comprising a stinger body including a tubular extension adapted to be inserted into a first end portion of a well tubing, a seal carried on the tubular extension for sealably...
5509476 Short wellhead plug  
A wellhead plug assembly having one or more plugs for plugging segments of a wellhead bore through which access during completion and production procedures is gained. Each plug has a shortened...
5404948 Injection well flow measurement  
Injection well fluid flow is measured by a device which has a running head and a body with a turbine type flowmeter interposed therein between the running head and discharge port means in the body....
5390735 Full bore lock system  
A locking system which includes landing nipples connectable in a well flow conduit and a lock mandrel to which well flow control devices are connectable. The landing nipples have an unrestricted...
5309993 Chevron seal for a well tool  
A sealing apparatus is provided for sealing between concentric relatively moveable tubular members. The sealing apparatus is comprised of a plurality of retainer seal rings, made of a high...
5307879 Positive lockdown for metal seal  
A casing or tubing hanger has a metal seal which also incorporates a locking device which locks the seal to the wellhead housing. An annular recess is formed in the bore of the wellhead housing....
5303772 Well completion apparatus  
A monobore completion system where the well is completed using a tubing conveyed perforating completion system having an automatic gun release and support for the tubing conveyed perforating guns.
5299643 Dual radially locked subsea housing  
A radially locked subsea housing includes a low pressure housing having upper and lower radial lock regions, each of which regions includes a radial interference surface that is between vertical to...
5285853 Casing hanger seal with test port  
A casing hanger seal has facilities to enable periodic testing from the exterior of the wellhead housing. The casing hanger seal has inner and outer walls separated by a cavity. An energizing...
5240073 Down-hole concentric chamber gas separator and method  
A down-hole separator for a production well drilled in a producing formation has a first tube having a first end and a second end, the first end being adapted for connection to an end of a...
5219028 Well casing and well casing method  
The present invention provides a preperforated casing for a well bore and a method of installing a preperforated casing in a well bore. The inventive casing comprises (a) a conduit having a...
5186258 Horizontal inflation tool  
A well tool having an anchor device, straddle packers above and below a port and an internal valve which are operated by longitudinal motion in an inflatable packer device. The well tool anchor is...
5176216 Bypass seating nipple  
A downhole or subterranean tool for use with a subsurface strata producing both hydrocarbon gas and water in which the gas and water are separated downhole by gravity and the gas is produced to the...
5133404 Rotary running tool for rotary lock mandrel  
A locking system utilizing metal seals for sealing and a rotary lock mandrel which is rotated to lock by a rotary running tool in a landing nipple in a well conduit. The lock mandrel has a metal...
5110144 Casing hanger seal assembly  
The present invention relates to an improved seal assembly for sealing between the interior sealing surface of a well housing and the exterior sealing surface of a hanger landed within the well...
5095991 Device for inserting tubular members together  
A running tool allows an upper tubular member to be inserted into a lower tubular member in a well without damage to sealing surfaces. The upper tubular member has a first side and a sealing...
5082061 Rotary locking system with metal seals  
A locking system utilizing metal seals for sealing and a rotary lock mandrel which is rotated to lock by a rotary running tool in a landing nipple in a well conduit. The lock mandrel has a metal...
5070942 Well tubing hanger sealing assembly  
The tubing hanger seal assembly of the present invention includes a metal to metal seal that is energized from above by a drive sleeve. The drive sleeve is threaded to the outside of the tubing...
5026074 Annular metal-to-metal seal  
The improved annular seal of the present invention provides a seal across an annular space between facing cylindrical surfaces and includes an outer annular ring, inner annular ring, the gap...
4984631 System and plug for plugging a conduit  
A system and a plug for plugging a well conduit. The plug includes a lock mandrel and a valve. There is a prong releasably connected in the plug. A running tool is adapted to releasably connect to...
Matches 1 - 50 out of 151 1 2 3 4 >