| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 07/27/2011 | CN201908606U Compound sealing device of rotating control head |
| 07/27/2011 | CN201908605U Insulated tubing self-sealing blowout preventer |
| 07/27/2011 | CN201908604U Well mouth liquid inlet device |
| 07/27/2011 | CN201908603U Plugging device of conical oil gas bore |
| 07/27/2011 | CN201908591U Hanging clip of gland nut of packing box of oil production wellhead |
| 07/27/2011 | CN201908585U Follow-up balanced type casing compensator |
| 07/27/2011 | CN102137983A Sand control screen assembly and method for use of same |
| 07/27/2011 | CN102134990A Cement head magnetic induction rubber plug indicator |
| 07/27/2011 | CN102134986A Production-increasing method by water-plugging and fracturing |
| 07/27/2011 | CN102134982A Multilayer gravel packing method and tool |
| 07/27/2011 | CN102134979A New method for forming manual well wall in oil and gas well by water-absorbing resin |
| 07/27/2011 | CN102134978A Drill hole wall protecting and leakage plugging method or slope guide deviation drilling method and used device thereof |
| 07/27/2011 | CN102134977A Secondary plugging valve |
| 07/27/2011 | CN102134976A Tunnel drilling hydraulic power reverse-circulation dual-walled drilling tool |
| 07/27/2011 | CN102134967A Construction method of consolidating horizontal directional drilling hole by grouting coal seam baseboard |
| 07/27/2011 | CN101769143B Skid-mounted device for switching and monitoring process flows of water dissolving method mining |
| 07/26/2011 | US7984765 System and method for well intervention |
| 07/26/2011 | US7984758 Multi-lock adapters for independent screwed wellheads and methods of using same |
| 07/26/2011 | CA2545226C An abrasion resistant frac head with a quick-change wear sleeve and method of refurbishing same |
| 07/26/2011 | CA2478613C Autonomous well intervention system |
| 07/21/2011 | WO2011088428A1 Electrically triggered pressure set packer assembly |
| 07/21/2011 | WO2011088354A1 Resilient foam debris barrier |
| 07/21/2011 | WO2011088294A1 Resilient foam debris barrier |
| 07/21/2011 | WO2011087450A1 High pressure seal adapter for splitter conductor housing to wellhead connection |
| 07/21/2011 | WO2011056409A3 Method of controlling water production through treating proppants with rpms |
| 07/21/2011 | US20110174506 Wellhead Annulus Seal Assembly |
| 07/21/2011 | US20110174505 Ball drop module |
| 07/21/2011 | US20110174504 Well tools operable via thermal expansion resulting from reactive materials |
| 07/21/2011 | US20110174503 Method and apparatus for installing a wireline for logging or other operations in an under-balanced well |
| 07/21/2011 | US20110174480 Pressure Relieving Transition Joint |
| 07/21/2011 | CA2787241A1 Resilient foam debris barrier |
| 07/20/2011 | EP2002080B1 Sealing device |
| 07/20/2011 | CN201902206U Leakage stopping simulation evaluation device for well drilling in stress-sensitive formation |
| 07/20/2011 | CN201902193U Well cementation rubber plug |
| 07/20/2011 | CN201902192U Float valve type underground blowout preventer |
| 07/20/2011 | CN201902191U Blowout preventer with side opening door |
| 07/20/2011 | CN201902190U Blowout prevention pressure testing device |
| 07/20/2011 | CN201902189U Blowout preventing device |
| 07/20/2011 | CN201902188U Integral type pumping well head device |
| 07/20/2011 | CN102132002A Subsea well intervention systems and methods |
| 07/20/2011 | CN102128044A Dust-removing device and dust-removing system |
| 07/20/2011 | CN102128015A Ash sledge assembling process |
| 07/20/2011 | CN102128014A Electric bailing well opening anti-theft cap |
| 07/19/2011 | US7980305 Ram BOP position sensor |
| 07/19/2011 | US7980300 Drillable bridge plug |
| 07/19/2011 | CA2638629C Fracturing plug convertible to a bridge plug |
| 07/19/2011 | CA2601492C Progressive cavity pump (pcp) drive head stuffing box with split seal |
| 07/14/2011 | WO2011084529A2 Constant pressure open hole water packing system |
| 07/14/2011 | WO2011084220A2 Control swelling of swellable packer by pre-straining the swellable packer element |
| 07/14/2011 | WO2011084159A1 Alignment of bop stack |
| 07/14/2011 | WO2011084073A1 Device for carrying a replacement safety valve in a well tube |
| 07/14/2011 | WO2011084072A1 Internal blow out preventer |
| 07/14/2011 | WO2011084068A1 Seal holder and method for sealing a bore |
| 07/14/2011 | WO2011084067A1 Subsea cap |
| 07/14/2011 | WO2011060897A3 Compositions and methods for mitigation of annular pressure buildup in subterranean wells |
| 07/14/2011 | WO2011048005A3 Metal seal |
| 07/14/2011 | WO2010036547A3 Pressure relieving transition joint |
| 07/14/2011 | US20110169224 Method and system for setting a metal seal |
| 07/14/2011 | US20110168412 Large Bore Packer and Methods of Setting Same |
| 07/14/2011 | US20110168411 Tubular expansion tool and method |
| 07/14/2011 | US20110168405 Alignment of bop stack to facilitate use of a rotating control device |
| 07/14/2011 | US20110168389 Surface Controlled Downhole Shut-In Valve |
| 07/14/2011 | US20110168385 Resilient Foam Debris Barrier |
| 07/14/2011 | US20110168380 Cement head with intergrated energy supply for operating valves |
| 07/14/2011 | CA2786082A1 Internal blow out preventer |
| 07/13/2011 | EP2342419A1 Cement head |
| 07/13/2011 | EP2342415A2 Method and device for fusion drilling |
| 07/13/2011 | EP1709285B1 Split locking ring for wellhead components |
| 07/13/2011 | CN201896631U Orifice safety device for gas extraction well |
| 07/13/2011 | CN201896602U Multi-mode mixing controlling system on oilfield well cementation cement truck |
| 07/13/2011 | CN201896601U Multi-channel load sensing hydraulic transmission system of cement truck for well cementation |
| 07/13/2011 | CN201896600U Dual-control hydraulic power system device of cement truck for well cementation in oil field |
| 07/13/2011 | CN201896599U Platen sealing device |
| 07/13/2011 | CN201896598U Gas pavement detection hole combination device |
| 07/13/2011 | CN201896597U Simple platform for quick assembly of blowout prevention pipe of oil/water well |
| 07/13/2011 | CN201895357U Novel high-energy mixer |
| 07/13/2011 | CN102124182A Wellhead annulus monitoring |
| 07/13/2011 | CN102121395A Method for integrated comprehensive management of gas in low-permeability single coal bed |
| 07/13/2011 | CN102121367A Underground steam injection sealing, heat insulation and compensation integrated device |
| 07/13/2011 | CN102121361A Multi-phase underground injector |
| 07/13/2011 | CN102121360A Spring type gate locking mechanism |
| 07/12/2011 | US7975781 Kelly driver |
| 07/12/2011 | US7975764 Emulsion system for sand consolidation |
| 07/12/2011 | US7975761 Method and device with biasing force for sealing a well |
| 07/12/2011 | CA2534080C Water-based drilling fluids using latex additives |
| 07/07/2011 | WO2011080498A1 Process and apparatus to improve reliability of pinpoint stimulation operations |
| 07/07/2011 | WO2011056393A3 Systems and methods for initiating annular obstruction in a subsurface well |
| 07/07/2011 | WO2011042826A3 Method for treating well bore within a subterranean formation |
| 07/07/2011 | WO2011041525A3 Method and system for running subsea test tree and control system without conventional umbilical |
| 07/07/2011 | WO2011037595A3 Method and apparatus for determining locations of multiple casings within a wellbore conductor |
| 07/07/2011 | US20110162845 Lost Circulation Compositions and Associated Methods |
| 07/07/2011 | US20110162844 Assembly and method for placing a cement plug |
| 07/07/2011 | US20110162843 Process and apparatus to improve reliability of pinpoint stimulation operations |
| 07/07/2011 | US20110162842 Method of treating the area surrounding acid gas storage wells |
| 07/07/2011 | US20110162835 Interface for deploying wireline tools with non-electric string |
| 07/07/2011 | DE112009000358T5 Ausdehnbares Bohrlochstellelement, Verfahren zur Herstellung und Verfahren zur Betätigung The expandable downhole actuator, methods of making and method of operating |
| 07/06/2011 | EP1101012B1 Mechanism for dropping a plurality of balls into tubulars used in drilling, completion and workover of oil, gas and geothermal wells, and method of using same |
| 07/06/2011 | CN201891404U Left-hand threaded packer |
| 07/06/2011 | CN201891403U Thermal recovery polished rod sealing device |
| 07/06/2011 | CN1902375B packer with inflatable well |