| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 01/05/2011 | CN201695982U Wellhead antitheft box bottom surface |
| 01/05/2011 | CN201695981U Wellhead antitheft box |
| 01/05/2011 | CN201695978U Expansion pipe assembly and oil well repair construction mechanism provided with same |
| 01/05/2011 | CN201695973U Hydraulic tail pipe releaser for oil gas well |
| 01/05/2011 | CN101939503A System and method for providing additional blowout preventer control redundancy |
| 01/05/2011 | CN101936156A Self-expanding packer borehole simulation test device |
| 01/05/2011 | CN101936144A Uphole pressure-bearing protective device |
| 01/04/2011 | US7863224 preparing composition comprising a calcium aluminate cement, water, a polyphosphate, a pozzolan, and a set retarding agent, wherein the set retarding agent comprises an alkali halide and a basic phosphate salt, placing the composition in the wellbor, and allowing the composition to set |
| 01/04/2011 | US7861791 High circulation rate packer and setting method for same |
| 01/04/2011 | US7861789 Metal-to-metal seal for bridging hanger or tieback connection |
| 01/04/2011 | US7861782 Foamed cement compositions, additives, and associated methods |
| 01/04/2011 | US7861781 Pump down cement retaining device |
| 01/04/2011 | US7861779 Method and device for establishing an underground well |
| 01/04/2011 | US7861775 Casing patch |
| 01/04/2011 | US7861774 Method and apparatus for wellbore fluid treatment |
| 01/04/2011 | CA2653738C Configurable wellbore zone isolation system and related methods |
| 01/04/2011 | CA2642858C Millable pre-installed plug in box and pin connection |
| 01/04/2011 | CA2634439C Wiper seal assembly for blowout preventer |
| 01/04/2011 | CA2629591C Permanent anchoring device |
| 01/04/2011 | CA2441814C Tubing seal |
| 01/04/2011 | CA2406183C Cementing compositions and application of these compositions to cementing oil wells or the like |
| 12/30/2010 | US20100327532 Metal-to-metal annulus seal arrangement |
| 12/30/2010 | US20100326737 Flexible extrusion resistant ring for seal assembly |
| 12/30/2010 | US20100326675 High-Pressure/High Temperature Packer Seal |
| 12/30/2010 | US20100326664 Running Tool That Prevents Seal Test |
| 12/30/2010 | US20100326660 Use of direct epoxy emulsions for wellbore stabilization |
| 12/30/2010 | US20100326658 Method and composition to increase viscosity of crosslinked polymer fluids |
| 12/30/2010 | US20100326650 Drillable bridge plug |
| 12/30/2010 | US20100326649 Swellable Oilfield Apparatus and Methods of Forming |
| 12/29/2010 | WO2010151905A2 High pressure/high temperature packer seal |
| 12/29/2010 | WO2010149643A1 A completion assembly and a method for stimulating, segmenting and controlling erd wells |
| 12/29/2010 | WO2010148494A1 Apparatus and method for stimulating subterranean formations |
| 12/29/2010 | WO2010129408A3 Subsea overload release system and method |
| 12/29/2010 | WO2010129396A3 Universal frac sleeve |
| 12/29/2010 | WO2010129178A3 System and method of providing high pressure fluid injection with metering using low pressure supply lines |
| 12/29/2010 | EP2265793A2 Subsea test apparatus, assembly and method |
| 12/29/2010 | EP2265791A1 Device and method of lining a wellbore |
| 12/29/2010 | EP2265687A2 Method for sealing an annular space in a wellbore |
| 12/29/2010 | EP2035653B1 Packer element for use in a stuffing box |
| 12/29/2010 | EP2004955B1 Improved probe for pressure meter |
| 12/29/2010 | EP1611311B1 System and method for treating drilling mud in oil and gas well drilling applications |
| 12/29/2010 | CN201687512U Forced air grouting device |
| 12/29/2010 | CN201687507U Hydrostatic coal wall water injection hole packer |
| 12/29/2010 | CN201687506U Mechanical coal-face flooding hole sealing device |
| 12/29/2010 | CN201687431U Movable grouting device |
| 12/29/2010 | CN201687430U Recyclable guiding barrel-sliding high-pressure packer |
| 12/29/2010 | CN201687429U Coal mine down-hole drilling hydraulic fracture open hole packer |
| 12/29/2010 | CN201687428U Communication type pressure test plug |
| 12/29/2010 | CN201687427U Dual-seal device with spacer and sealing cover for flange connection |
| 12/29/2010 | CN201687424U Lead sealing tool for broken casing |
| 12/29/2010 | CN201687416U Hydraulic pressure balance workover rig |
| 12/29/2010 | CN201687407U Gas-lift completion string used for high angle deviated holes |
| 12/29/2010 | CN1930364B System for sealing an annular space in a wellbore |
| 12/29/2010 | CN101932791A Systems, methods, and devices for isolating portions of a wellhead from fluid pressure |
| 12/29/2010 | CN101929331A Overall process under-balance drilling pressure compensation system and method |
| 12/29/2010 | CN101929320A Power swivel |
| 12/29/2010 | CN101929319A Physical foaming cement well cementation technology and supporting system |
| 12/29/2010 | CN101929318A Stage cementing device |
| 12/29/2010 | CN101929317A Undersize-hole oil pipe plugging device |
| 12/29/2010 | CA2670416A1 Split stream oilfield pumping system utilizing recycled, high reid vapour pressure fluid |
| 12/28/2010 | US7857062 Configurable wellhead system with permanent fracturing spool and method of use |
| 12/28/2010 | US7857054 A temporary matrix is provided in treating a subterranean formation by providing a composition comprising a matrix forming material and a matrix degrading material; significantly reduces the passage of fluid across or near the matrix or provides structural strength |
| 12/28/2010 | US7857053 Control of the properties of cement slurries with optimized polymers combination |
| 12/28/2010 | US7857052 Stage cementing methods used in casing while drilling |
| 12/26/2010 | CA2707401A1 Improvements to swellable apparatus and materials therefor |
| 12/24/2010 | CA2785878A1 Methods and apparatus for subsea well intervention and subsea wellhead retrieval |
| 12/23/2010 | WO2010148316A2 Dual anchoring tubular back-off tool |
| 12/23/2010 | WO2010147960A2 Frac sleeve system and method |
| 12/23/2010 | WO2010147549A1 System for extracting energy from the ground |
| 12/23/2010 | WO2010147476A1 Well tool and method for in situ introduction of a treatment fluid into an annulus in a well |
| 12/23/2010 | WO2010146402A2 Blowout preventer |
| 12/23/2010 | WO2010146374A2 Retrievable seal |
| 12/23/2010 | WO2010145004A1 Method and apparatus for sealing and venting pressurized casings of gas wells |
| 12/23/2010 | WO2010144989A1 A universal rotating flow head having a modular lubricated bearing pack |
| 12/23/2010 | US20100320695 Annular seal |
| 12/23/2010 | US20100319998 Wellbore consolidating tool for rotary drilling application |
| 12/23/2010 | US20100319935 Method and device for a running tool |
| 12/23/2010 | US20100319928 Through tubing intelligent completion and method |
| 12/23/2010 | US20100319927 Downhole Tool with Hydraulic Closure Seat |
| 12/23/2010 | US20100319919 Application of degradable fibers in invert emulsion fluids for kill pills |
| 12/23/2010 | US20100319918 Cement additive for the enhanced treatment of oil and gas wells and related methods of use |
| 12/23/2010 | US20100319906 Shear Seal Blowout Preventer |
| 12/23/2010 | CA2766053A1 Dual anchoring tubular back-off tool |
| 12/23/2010 | CA2765724A1 A universal rotating flow head having a modular lubricated bearing pack |
| 12/23/2010 | CA2761789A1 Well tool and method for in situ introduction of a treatment fluid into an annulus in a well |
| 12/23/2010 | CA2760383A1 Blowout preventer having ram block with oculus |
| 12/22/2010 | EP2264278A2 Subsea hydraulic coupler |
| 12/22/2010 | CN201679476U Integrated combination valve |
| 12/22/2010 | CN201679475U Underground hydraulic packing and positioning device |
| 12/22/2010 | CN201679474U Sleeve pipe pressure blocking device |
| 12/22/2010 | CN201679473U Christmas tree gate control lock |
| 12/22/2010 | CN201679472U Anti-theft oil-well killable packer |
| 12/22/2010 | CN101922285A Method for safely tripping gas drilling tool in case of encountering air layer |
| 12/22/2010 | CN101435322B Well completion method of ground dipping uranium extracting process well |
| 12/22/2010 | CA2670218A1 Method for providing stimulation treatments using burst disks |
| 12/21/2010 | US7854277 Wellbore fluid comprising a base fluid and a particulate bridging agent |
| 12/21/2010 | US7854268 Deep water hurricane valve |
| 12/21/2010 | US7854262 Sorel cement compositions, amine phosphono retarders, and associated methods |
| 12/21/2010 | CA2606537C Use of invert epoxy emulsions for wellbore stabilization |
| 12/21/2010 | CA2358655C Lighten cement slurries |