| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 12/01/2010 | EP2255110A1 System, method & apparatus for sealing materials having a low glass transition temperature for high performance sealing applications |
| 12/01/2010 | EP2255063A1 Expandable packer |
| 12/01/2010 | EP2255062A1 A method and an apparatus for downhole injecting one or more treatment fluids. |
| 12/01/2010 | EP2126271B1 Improved shoe for wellbore lining tubing |
| 12/01/2010 | CN201661804U Dead-hole studding type tubing head four-way joint |
| 12/01/2010 | CN201661270U Special double-safety floating hoop for side drilling horizontal well |
| 12/01/2010 | CN201661269U Self-locking type packer |
| 12/01/2010 | CN201661268U Compensation type pilot-operated water injection packer |
| 12/01/2010 | CN201661267U Plugging packer |
| 12/01/2010 | CN201661266U Expansion tool of branched well window sealing device |
| 12/01/2010 | CN201661265U Air supply pressure tester of capsule plug for drilling water injection test |
| 12/01/2010 | CN201661264U Hexalateral well downhole bifurcation mechanism sealing device |
| 12/01/2010 | CN201661263U Thermal production mandrel type bushing head |
| 12/01/2010 | CN201661262U Sealing packing for oil well |
| 12/01/2010 | CN101899962A Throwing type oil pipe overflow controller |
| 12/01/2010 | CN101899961A Controllable friction type anti-spraying plug inside pipeline and anti-spraying method |
| 12/01/2010 | CN101899960A Oilwell leakage plugging device |
| 12/01/2010 | CN101899959A Fishing oil tube overflow controller |
| 12/01/2010 | CN101899958A Blowout prevention plug inside floater type oil pipe and blowout prevention method |
| 12/01/2010 | CN101899957A Movable self-sealing preventor |
| 11/30/2010 | US7841417 Use of swellable material in an annular seal element to prevent leakage in a subterranean well |
| 11/30/2010 | US7841410 Method and apparatus for dropping a pump down plug or ball |
| 11/30/2010 | US7841399 Pressure and friction reducing flow adapter |
| 11/30/2010 | US7841397 Straddle packer and method for using the same in a well bore |
| 11/30/2010 | CA2634561C Hydraulic coiled tubing retrievable bridge plug |
| 11/30/2010 | CA2618150C Rapid setting plugging compositions and methods for sealing subterranean formations |
| 11/30/2010 | CA2618134C Triple valve blow out preventer |
| 11/30/2010 | CA2596773C Injection plane initiation in a well |
| 11/30/2010 | CA2596460C Flow control for increased permeability planes in unconsolidated formations |
| 11/30/2010 | CA2523990C Bottom hole completion system for an intermittent plunger |
| 11/25/2010 | WO2010135644A2 High expansion metal seal system |
| 11/25/2010 | WO2010135492A2 Swelling packer and method of construction |
| 11/25/2010 | WO2010135149A2 Selective plug and method |
| 11/25/2010 | WO2010135148A2 Selective plug and method |
| 11/25/2010 | WO2010135115A2 Dissolvable downhole tool, method of making and using |
| 11/25/2010 | WO2010135114A2 Pressure testable tubing connection |
| 11/25/2010 | WO2010135019A1 Improved subsea cementing plug system with plug launching tool |
| 11/25/2010 | WO2010134055A2 Anti-extrusion packer system |
| 11/25/2010 | WO2010112811A3 Seal assembly |
| 11/25/2010 | WO2009002618A3 Ram bop shear device |
| 11/25/2010 | US20100294516 Anti-Extrusion Packer System |
| 11/25/2010 | US20100294515 Selective plug and method |
| 11/25/2010 | US20100294514 Selective plug and method |
| 11/25/2010 | US20100294511 Down-hole actuation device storage apparatus and method for launching |
| 11/25/2010 | US20100294503 Subsea Cementing Plug System With Plug Launching Tool |
| 11/25/2010 | US20100294496 Low density cementitious compositions |
| 11/25/2010 | US20100294495 Open Hole Completion Apparatus and Method for Use of Same |
| 11/25/2010 | US20100294485 High Expansion Metal Seal System |
| 11/25/2010 | US20100294484 Swelling Packer and Method of Construction |
| 11/25/2010 | US20100294483 Non-Metallic Mandrel and Element System |
| 11/25/2010 | US20100294482 Variable Bore Packer for a Blowout Preventer |
| 11/25/2010 | US20100294481 Angled-penetrator device and system |
| 11/25/2010 | CA2762070A1 Dissolvable downhole tool, method of making and using |
| 11/24/2010 | EP2253798A1 Methods for producing fluids from acidized and consolidated portions of subterranean formations |
| 11/24/2010 | EP2252765A1 Device for plug removal |
| 11/24/2010 | EP2252764A2 One trip liner running, cementing and setting tool using expansion |
| 11/24/2010 | EP1957749B1 Plug intended to be inserted into a duct on which a fluid flows and associated fluid prospecting well |
| 11/24/2010 | EP1786716B1 Winch assembly |
| 11/24/2010 | CN201656409U Cable anti-theft sealing device used for submersible motor well-head |
| 11/24/2010 | CN201654010U Plugging tester |
| 11/24/2010 | CN201650254U Construction pipe string integrating fracturing and recovery of hydraulic pump |
| 11/24/2010 | CN201650252U Primary gravel packing tool for heat recovery |
| 11/24/2010 | CN201650211U Multifunctional cross |
| 11/24/2010 | CN201650210U Bidirectional high-pressure removable bridge plug |
| 11/24/2010 | CN201650209U Automatic shutdown switch for cementing of horizontal well |
| 11/24/2010 | CN201650208U Hydraulic anchor shear pin packer |
| 11/24/2010 | CN201650207U High temperature resistant packer having automatically reset function |
| 11/24/2010 | CN201650206U Permanent type midway seating-preventing packer |
| 11/24/2010 | CN201650205U Recyclable tubular packer |
| 11/24/2010 | CN201650204U Water distribution separator |
| 11/24/2010 | CN201650203U Double rubber-barrel isolation packer |
| 11/24/2010 | CN201650202U Water-swelling packer |
| 11/24/2010 | CN201650201U Hydraulic packer |
| 11/24/2010 | CN201650200U Shear pin-free by-pass support packer |
| 11/24/2010 | CN201650199U Slip type hydraulic packer |
| 11/24/2010 | CN201650198U Gas well pressure-dividing stratifying test process pipe column |
| 11/24/2010 | CN201650197U Packer extruding and sealing device |
| 11/24/2010 | CN201650196U Self-grouting single-stream bruising seat |
| 11/24/2010 | CN201650195U Retrievable hydraulic packer setting ball-play assembly |
| 11/24/2010 | CN201650194U Rapid pressure-testing tool for well mouth |
| 11/24/2010 | CN201650193U Blowout prevention connection unit of long-distance horizontal borehole |
| 11/24/2010 | CN201650192U Reducing short joint connection type oil tube hanger |
| 11/24/2010 | CN201650191U Gas production wellhead assembly of high-pressure electric submersible pump |
| 11/24/2010 | CN201650190U Gas production wellhead device for downhole pipeline |
| 11/24/2010 | CN201650189U Double-stage sealing device |
| 11/24/2010 | CN201650188U Ceramic air faucet |
| 11/24/2010 | CN201650187U Wellhead compensation and connection device used for testing screw pump of offshore semi-submersible type drilling platform |
| 11/24/2010 | CN201650186U Material of heat preservation clothes for oil production |
| 11/24/2010 | CN201650185U Multifunctional well head polish rod sealing device of a pumping unit |
| 11/24/2010 | CN201650184U Hole packer capable of packing hole peripheral cracks |
| 11/24/2010 | CN201650183U Polish rod sealer |
| 11/24/2010 | CN201650179U Packer type sleeve repairing and connecting device with spiral slip |
| 11/24/2010 | CN201643929U Comprehensive gas spray orifice safety control device |
| 11/24/2010 | CN101896687A Subsea valve |
| 11/24/2010 | CN101896439A Copolymer based on a compound comprising sulfonic acid |
| 11/24/2010 | CN101892842A Method for uncovering coal in vertical shaft |
| 11/24/2010 | CN101892839A Apparatus and method for formation evaluation |
| 11/24/2010 | CN101892831A Method for measuring displacement efficiency of cement slurry by using temperature sensing device |
| 11/24/2010 | CN101109269B Deepwater drilling device based on near surface deviation |
| 11/23/2010 | US7838469 reducing fluid loss in downhole operations such as drilling and well completion, by injecting a mixture containing a fusing solid gilsonite, dispersants, fibers, and mica flakes |