| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 04/13/2011 | CN201794550U Blowout prevention plug for separate layer testing of well |
| 04/13/2011 | CN201794549U Anti-scaling water injection isolator |
| 04/13/2011 | CN201794548U Internally eccentric gas-lift working barrel |
| 04/13/2011 | CN201794547U Oil/gas deep well leak stopper |
| 04/13/2011 | CN201794546U Hydraulic connecting device for underwater production tree and wellhead |
| 04/13/2011 | CN201794545U Rescue spraying device |
| 04/13/2011 | CN201794544U Oil drain backflow device for bailing producing well mouth |
| 04/13/2011 | CN201794543U Sealing ring special for sucker rod on high-efficiency sealed pumping unit |
| 04/13/2011 | CN201794542U Inlaid sealing ring |
| 04/13/2011 | CN201794541U Wellhead sealing device |
| 04/13/2011 | CN201794540U Random automatic adjusting feed rod sealing device for oil pumping unit |
| 04/13/2011 | CN201794527U Casing float collar |
| 04/13/2011 | CN201794525U Sucker rod trip operating device under pressure |
| 04/13/2011 | CN201792425U Movable skid-mounted cement mixing device |
| 04/13/2011 | CN102016226A Internal tree cap and ITC running tool |
| 04/13/2011 | CN102016221A Gripping element for gripping a tubular in the construction and maintenance of oil and gas wells |
| 04/13/2011 | CN102016218A A method and system for installing geothermal heat exchangers, energy piles, concrete piles, micropiles, and anchors using a sonic drill and a removable or retrievable drill bit |
| 04/13/2011 | CN102011563A Randomly positioned float collar |
| 04/13/2011 | CN102011562A Construction process for ground mechanical control type well cementing tool |
| 04/13/2011 | CN102011561A Multi-stage fracturing hole-closing tool |
| 04/13/2011 | CN102011560A Bidirectional pressure-bearing packer |
| 04/13/2011 | CN102011559A Underground snubbing operation device |
| 04/13/2011 | CN101131071B Liquid fill adapter for gas well |
| 04/12/2011 | US7923413 Lost circulation material for oilfield use |
| 04/12/2011 | US7921925 Method and apparatus for expanding and separating tubulars in a wellbore |
| 04/12/2011 | US7921923 Casing mandrel for facilitating well completion, re-completion or workover |
| 04/12/2011 | US7921921 Downhole backup system and method |
| 04/12/2011 | US7921714 Annular region evaluation in sequestration wells |
| 04/12/2011 | CA2663358C Methods and apparatus for reverse circulation cementing of casing strings in wellbores |
| 04/12/2011 | CA2641397C Selectively activated float equipment |
| 04/12/2011 | CA2606771C Packer-anchoring device with expandable ring |
| 04/07/2011 | WO2011041550A2 Subsea control system with interchangeable mandrel |
| 04/07/2011 | WO2011041525A2 Method and system for running subsea test tree and control system without conventional umbilical |
| 04/07/2011 | WO2011039514A2 Improved flushing system |
| 04/07/2011 | WO2011039512A2 Well containment system |
| 04/07/2011 | WO2011038862A1 Equipment and methods for deploying line in a wellbore |
| 04/07/2011 | WO2011008431A3 Metal-to-metal annulus seal arrangement |
| 04/07/2011 | WO2011005517A3 Through tubing intelligent completion and method |
| 04/07/2011 | WO2011002602A3 Wellsite equipment replacement system and method for using same |
| 04/07/2011 | WO2010082186A3 Barrier seal and assembly incorporating same |
| 04/07/2011 | US20110079960 Multi-Piece Pressure Operated Rings for a Downhole Pump Plunger |
| 04/07/2011 | US20110079439 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 04/07/2011 | US20110079433 Pump-in seal |
| 04/07/2011 | US20110079390 Cementing sub for annulus cementing |
| 04/07/2011 | US20110079383 Interchangeable drillable tool |
| 04/07/2011 | CA2776244A1 Improved flushing system |
| 04/07/2011 | CA2776243A1 Well containment system |
| 04/07/2011 | CA2775349A1 Equipment and methods for deploying line in a wellbore |
| 04/06/2011 | EP2305947A2 Geothermal liner system with packer |
| 04/06/2011 | EP2304306A1 Method for in-situ repair of a hole in pipe in pipe tubulars |
| 04/06/2011 | EP2304169A2 Assembly for use in a christmas tree |
| 04/06/2011 | EP2201213B1 Oil field system for through tubing rotary drilling |
| 04/06/2011 | EP1769132B1 Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations |
| 04/06/2011 | CN201786355U Selective chemical plugging simulating device for gravel packed well |
| 04/06/2011 | CN201786334U Negative-pressure gas production process tubular column |
| 04/06/2011 | CN201786321U Blocking device for stage collar |
| 04/06/2011 | CN201786320U Underground pipeline type leak-proof system for oil extraction |
| 04/06/2011 | CN201786319U Packer for dry hole |
| 04/06/2011 | CN201786318U Oil tube internal stopper |
| 04/06/2011 | CN201786317U Super-heavy oil thermal production well oil pipe sealing controller |
| 04/06/2011 | CN201786316U Automatic oil-well blow-out preventer |
| 04/06/2011 | CN201786315U Safe protection blowout preventer for injection well test |
| 04/06/2011 | CN201786314U Embedded blowout preventer of sucker rod |
| 04/06/2011 | CN201786313U Oil tube blowout control box |
| 04/06/2011 | CN201786312U Conical diversion device |
| 04/06/2011 | CN201786311U Drilling gas blowout preventor |
| 04/06/2011 | CN201786310U Self-sealing apparatus for oil and water well capable of quick mounting and dismounting |
| 04/06/2011 | CN201786309U Oil dirt resisting device for operation well head |
| 04/06/2011 | CN201786308U Combination plugging device for replacing gate valve under pressure |
| 04/06/2011 | CN201786307U High-pressure double-stage blowout prevention self-adjusting polished rod sealer |
| 04/06/2011 | CN201786276U Sealing protection device of under-ground oil production machine |
| 04/06/2011 | CN201786271U Oilfield oil casing production device |
| 04/06/2011 | CN102003173A System and method for automatically measuring and recording gas pressure during coal seam hole sealing |
| 04/06/2011 | CN102003169A Method for repairing accident well of coal bed methane multi-branch horizontal well |
| 04/06/2011 | CN102003165A Integrated hollow confecting-polymer device |
| 04/06/2011 | CN102003163A Well mouth eccentric pressurizing sleeve oil recycling mobile device of production well |
| 04/06/2011 | CN102003159A Automatic control method for cementing cement slurry mixing operation |
| 04/06/2011 | CN102003158A Base tube expandable packer capable of secondarily expanding at time of meeting medium |
| 04/06/2011 | CN102003157A Subsea wellhead connector |
| 04/06/2011 | CN101161983B Method for improving cementing plugging effect |
| 04/05/2011 | US7919563 Low molecular weight hydrogenated nitrile rubber |
| 04/05/2011 | US7918278 Method and apparatus for dropping a pump down plug or ball |
| 04/05/2011 | US7918273 Top drive casing system |
| 04/05/2011 | US7918271 Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device |
| 04/05/2011 | CA2632182C Apparatus for autofill deactivation of float equipment and method of reverse cementing |
| 04/05/2011 | CA2512641C Apparatus and methods for drilling a wellbore using casing |
| 04/02/2011 | CA2702652A1 Apparatus and method for directionally disposing a flexible member in a pressurized conduit |
| 03/31/2011 | WO2011038009A2 Use of foam shaper memory polymer to transport acid or other wellbore treatments |
| 03/31/2011 | WO2011037995A2 Plug counter and method |
| 03/31/2011 | WO2011037586A1 Compression assembly and method for actuating downhole packing elements |
| 03/31/2011 | WO2011037584A1 Anchor assembly and method for anchoring a downhole tool |
| 03/31/2011 | WO2011037581A1 Through tubing bridge plug and installation method for same |
| 03/31/2011 | WO2011005694A3 Motion transfer from a sealed housing |
| 03/31/2011 | WO2010147960A3 Frac sleeve system and method |
| 03/31/2011 | WO2010146374A3 Retrievable seal |
| 03/31/2011 | WO2010134055A3 Anti-extrusion packer system |
| 03/31/2011 | WO2010120453A3 Slickline conveyed tubular scraper system |
| 03/31/2011 | WO2009044286A8 System and method for performing intervention operations with a subsea y-tool |
| 03/31/2011 | US20110073330 Earth-boring tools having expandable members and related methods |
| 03/31/2011 | US20110073329 Compression Assembly and Method for Actuating Downhole Packing Elements |