| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 01/18/2011 | US7870903 Inverse emulsion polymers as lost circulation material |
| 01/18/2011 | US7870896 Extended wear ball lock for rotating head |
| 01/18/2011 | CA2615737C A retrievable bridge plug |
| 01/18/2011 | CA2475523C Method for selecting a cementing composition for cementing wells |
| 01/13/2011 | WO2011005836A2 Methods for treating a wellbore |
| 01/13/2011 | WO2011005694A2 Motion transfer from a sealed housing |
| 01/13/2011 | WO2011005517A2 Through tubing intelligent completion and method |
| 01/13/2011 | WO2010120469A3 Open hole frac system |
| 01/13/2011 | WO2010111371A3 Downhole swellable sealing system and method |
| 01/13/2011 | WO2010111076A3 Well tools utilizing swellable materials activated on demand |
| 01/13/2011 | WO2010105065A3 Downhole sealing device and method of making |
| 01/13/2011 | US20110005779 Composite downhole tool with reduced slip volume |
| 01/13/2011 | US20110005778 Method and system for anchoring and isolating a wellbore |
| 01/13/2011 | US20110005774 Single trip, tension set, metal-to-metal sealing, internal lockdown tubing hanger |
| 01/13/2011 | US20110005770 Subsea control system |
| 01/13/2011 | US20110005769 Rotating and reciprocating swivel apparatus and method |
| 01/13/2011 | US20110005743 Mounts for Blowout Preventer Bonnets and Methods of Use |
| 01/13/2011 | US20110005612 Gas pipe system and a pipe component provided with a break plate for use in such a gas pipe system |
| 01/12/2011 | EP2273066A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 01/12/2011 | EP2273064A1 Procedures and equipment for profiling and jointing of pipes |
| 01/12/2011 | EP2273063A1 Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations |
| 01/12/2011 | EP2273062A2 Method and apparatus to complete a well having tubing inserted through a valve |
| 01/12/2011 | EP2273060A2 Coupling apparatus |
| 01/12/2011 | EP2273059A1 Coupling apparatus |
| 01/12/2011 | EP2271822A2 System and method for recompletion of old wells |
| 01/12/2011 | EP2271821A1 A switching device for, and a method of switching, a downhole tool |
| 01/12/2011 | EP2271819A2 A tool for shutting off openings or leaks in a well bore |
| 01/12/2011 | EP2044288B1 Method for removing a sealing plug from a well |
| 01/12/2011 | EP1805392B1 Casing strings and methods of using such strings in subterranean cementing operations |
| 01/12/2011 | CN201705309U Mechanical water-blocking oil-producing pipe column |
| 01/12/2011 | CN201705299U Anti-injection self-sealing paraffin knife for sucker rod |
| 01/12/2011 | CN201705295U Insulating sleeve for christmas tree of gas well |
| 01/12/2011 | CN201705284U Drilling-free grading ferrule |
| 01/12/2011 | CN201705283U Leaking stoppage device for drilling fixed points |
| 01/12/2011 | CN201705282U Hydraulic hammer |
| 01/12/2011 | CN201705281U Cable through universal packer |
| 01/12/2011 | CN201705280U Permanent type packer for anchoring of inserting tube |
| 01/12/2011 | CN201705279U Expansion type sealer |
| 01/12/2011 | CN201705278U Naked eye self-expansion annular packer |
| 01/12/2011 | CN201705277U Sequential unpacking well washing device of oil well packer |
| 01/12/2011 | CN201705276U Well completion and flow string of horizontal well |
| 01/12/2011 | CN201705275U Washable well packer |
| 01/12/2011 | CN201705274U Special packer for preventing oil theft |
| 01/12/2011 | CN201705273U Oil tube internal blowout plug with controllable frictional resistance |
| 01/12/2011 | CN201705272U Float type oil tube-contained blowout stopper |
| 01/12/2011 | CN201705271U Wellhead diversion device used in sucker rod work |
| 01/12/2011 | CN201705270U Tubing homework wellhead guiding device |
| 01/12/2011 | CN201705269U Universal adjusting polished rod sealing device |
| 01/12/2011 | CN201705268U Wellhead anti-falling device |
| 01/12/2011 | CN201705267U Well mouth rotary ejection preventer |
| 01/12/2011 | CN201705266U Coalbed gas wellhead device for exhausting coal water and gas and injecting water |
| 01/12/2011 | CN201705265U Well mouth packing eccentric wear adjusting device |
| 01/12/2011 | CN201705264U Electric pump well tubing head and sealing device |
| 01/12/2011 | CN201705254U Hydraulic booster for pipe string unpacking |
| 01/12/2011 | CN201705253U Fully hydraulic controlled liner hanger |
| 01/12/2011 | CN201705252U Hydraulic expansion type rotating liner hanger |
| 01/12/2011 | CN201705218U Tubing string with thick oil underground returning thermal production blockage technique |
| 01/12/2011 | CN201705217U Torque transfer expansion device |
| 01/12/2011 | CN101942997A Cementing wall packer channeling checking instrument |
| 01/12/2011 | CN101942982A Device for jetting conduit into directly-drilled surface layer of marine deep-water drilling well |
| 01/12/2011 | CN101942981A Open hole packer with double rubber drums |
| 01/12/2011 | CN101942980A Top-driving manual-automatic integrated internal blowout preventer |
| 01/12/2011 | CN101942978A Preparation method of continuous expansion pipe with high strength and high plastic elasticity |
| 01/12/2011 | CN101395218B Starch-(meth)acrylate graft copolymer, oil-absorbing expansion material as well as oil and water-absorbing expansion material containing the copolymer, both sealer and packer made of the material |
| 01/11/2011 | US7867954 for use in cementing subterranean oil and gas wells; enhanced compressive strength, and favorable compressive strength to Young's Modulus ratios; Lightweight |
| 01/11/2011 | US7866408 Well tool including swellable material and integrated fluid for initiating swelling |
| 01/11/2011 | US7866406 System and method for plugging a downhole wellbore |
| 01/11/2011 | US7866394 Compositions and methods of cementing in subterranean formations using a swelling agent to inhibit the influx of water into a cement slurry |
| 01/11/2011 | US7866393 Swellable elastomers and associated methods |
| 01/11/2011 | US7866392 Method and apparatus for sealing and cementing a wellbore |
| 01/11/2011 | US7866391 Shoe for wellbore lining tubing |
| 01/11/2011 | US7866387 Packer variable volume excluder and sampling method therefor |
| 01/11/2011 | US7866382 Spring load seal assembly and well drilling equipment comprising same |
| 01/11/2011 | CA2636195C Self energized packer |
| 01/11/2011 | CA2606367C Use of direct epoxy emulsions for wellbore stabilization |
| 01/11/2011 | CA2593629C Fixed-point packoff element with primary seal test capability |
| 01/11/2011 | CA2588730C Apparatus and method for guiding pipe |
| 01/11/2011 | CA2541318C Well cementing apparatus and method |
| 01/09/2011 | CA2704701A1 Composite downhole tool with reduced slip volume |
| 01/06/2011 | WO2011002602A2 Wellsite equipment replacement system and method for using same |
| 01/06/2011 | WO2011000039A1 Facilitating subsea intervention |
| 01/06/2011 | WO2010084353A3 Apparatus and method for setting a downhole anchor and related telescopic joint |
| 01/06/2011 | WO2009056840A3 Subsea assembly |
| 01/06/2011 | US20110000684 Flow control device with one or more retrievable elements |
| 01/06/2011 | US20110000677 Subsea test apparatus, assembly and method |
| 01/06/2011 | US20110000676 Plug construction comprising a hydraulic crushing body |
| 01/06/2011 | US20110000668 Through tubing cable rotary system |
| 01/05/2011 | EP2270310A2 Metal-to-metal seal with travel seal bands |
| 01/05/2011 | EP2270309A2 Bimetallic diaphragm for trapped fluid expansion |
| 01/05/2011 | EP1991757B1 System for injecting a substance into the space surrounding a well tubular |
| 01/05/2011 | CN201696037U Directional ball seat |
| 01/05/2011 | CN201695991U Oil field well cementation tool with drilling-free capacity |
| 01/05/2011 | CN201695990U Split-type slip hanger packer |
| 01/05/2011 | CN201695989U Balanced blockage-preventive packer |
| 01/05/2011 | CN201695988U Pressure difference self sealing type steam filling packer |
| 01/05/2011 | CN201695987U Simple grouting water stop plug |
| 01/05/2011 | CN201695986U Packer capable of cleaning well |
| 01/05/2011 | CN201695985U Wellhead packer used in cement slurry displacing efficiency analog device |
| 01/05/2011 | CN201695984U Turning system for blowout preventers |
| 01/05/2011 | CN201695983U Polish-rod sealer |