| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 07/25/2007 | CN2926486Y Fast wellhead for oil-gas water well |
| 07/25/2007 | CN101004130A Method for plugging back sensing hole for gas pressure, sealing liquid, pressure valve, and pressure measuring unit |
| 07/24/2007 | US7246667 Radial expansion of tubular members |
| 07/24/2007 | US7246666 Mounts for blowout preventer bonnets |
| 07/24/2007 | US7246665 Providing a settable formulation that comprisesmagnesium oxide, andbrine that comprises water and a divalent salt, wherein the divalent salt does not contain magnesium ;placing the settable formulation in a subterranean formation; allowing to to set to form the hardened mass |
| 07/24/2007 | CA2414641C Whey protein retarder |
| 07/24/2007 | CA2288784C Monitoring of downhole parameters and tools utilizing fiber optics |
| 07/20/2007 | CA2533566A1 Primary leak containment device for well-heads |
| 07/19/2007 | WO2007082014A2 Zone isolation assembly for isolating and testing fluid samples from a subsurface well |
| 07/19/2007 | US20070167331 Method of consolidating an underground formation |
| 07/19/2007 | US20070163784 High pressure rotating drilling head assembly with hydraulically removable packer |
| 07/19/2007 | US20070163783 Method of abandoning a well |
| 07/19/2007 | US20070163777 Self energized packer |
| 07/19/2007 | US20070163776 Device of a test plug |
| 07/19/2007 | DE19781780B4 Unterwasser-Verbindung Underwater Connection |
| 07/18/2007 | EP1808569A2 Underbalanced well drilling and production |
| 07/18/2007 | EP1807605A2 Methods for producing fluids from acidized and consolidated portions of subterranean formations |
| 07/18/2007 | EP1807603A1 Casing strings and methods of using such strings in subterranean cementing operations |
| 07/18/2007 | EP1807602A1 Universal connection interface for subsea completion systems |
| 07/18/2007 | EP1415104B1 Valve system and method |
| 07/18/2007 | CN2923992Y Self-locking rubber cork |
| 07/18/2007 | CN2923991Y Release-free compression type packer |
| 07/18/2007 | CN2923990Y Self-fishing type release packer |
| 07/18/2007 | CN2923989Y Leather-cup butt-fitting, clamp span adjustable, self-packing type packer for oil and gas field |
| 07/18/2007 | CN2923988Y Oil-production tree well head rush spraying device |
| 07/18/2007 | CN2923987Y Sucker rod wellhead device |
| 07/18/2007 | CN1327104C A cable duct device in a swelling packer |
| 07/18/2007 | CN100999993A Mechanical pipe pole connecting hoop detecting apparatus for working with pressure |
| 07/18/2007 | CN100999987A Electrohydraulic compound switch controlling valve for oil water well working with pressure |
| 07/18/2007 | CN100999986A Remote antitheft apparatus for oil extracting well head |
| 07/18/2007 | CN100999980A Drilling method of realizing whole procedure under-balance |
| 07/17/2007 | US7243958 Spring-biased pin connection system |
| 07/17/2007 | US7243743 Drilling assembly and method for drilling a barehole into geological formations |
| 07/17/2007 | US7243733 Cup tool for a high-pressure mandrel and method of using same |
| 07/17/2007 | US7243732 Zonal isolation using elastic memory foam |
| 07/17/2007 | US7243730 Well production optimizing system |
| 07/17/2007 | US7243727 Isolation assembly for coiled tubing |
| 07/17/2007 | US7243713 Shear/seal ram assembly for a ram-type blowout prevention system |
| 07/17/2007 | CA2536716C Expanded threaded connection with seal at interface |
| 07/17/2007 | CA2526227C Expandable connector for borehole tubes |
| 07/12/2007 | WO2007076703A1 Starch-(meth)acrylate graft copolymer, oil-absorbing expansion meterial as well as oil and water-absorbing expansion meterial containing the copolymer, both sealer and packer made of the meterial |
| 07/12/2007 | WO2007076609A1 Pressure containment devices and methods of using same |
| 07/12/2007 | WO2007039836A3 Methods, systems and appartus for coiled tubing testing |
| 07/12/2007 | US20070158082 System and method for cementing through a safety valve |
| 07/12/2007 | US20070158081 Expandable tubulars |
| 07/12/2007 | US20070158077 System and method for low-pressure well completion |
| 07/12/2007 | US20070158069 Method for drilling and casing a wellbore with a pump down cement float |
| 07/12/2007 | US20070158068 Methods of Cementing in Subterranean Formations Involving Reduced Pumping Pressure |
| 07/12/2007 | US20070158062 Zone isolation assembly for isolating and testing fluid samples from a subsurface well |
| 07/12/2007 | US20070158060 System for sealing an annular space in a wellbore |
| 07/12/2007 | CA2674268A1 Pressure containment devices and methods of using same |
| 07/11/2007 | EP1805393A1 Methods and systems for reverse-circulation cementing in subterranean formations |
| 07/11/2007 | EP1805392A1 Casing strings and methods of using such strings in subterranean cementing operations |
| 07/11/2007 | EP1805391A1 Downhole swellable seal |
| 07/11/2007 | EP1805116A2 Foamed cement compositions and associated methods of use |
| 07/11/2007 | EP1608842B1 Reverse circulation cementing system and method |
| 07/11/2007 | EP1570151B1 A cable duct device in a swelling packer |
| 07/11/2007 | CN2921274Y Combined well head connector |
| 07/11/2007 | CN2921267Y Moving foaming device for low-density cement paste well cementation |
| 07/11/2007 | CN2921266Y Grouting tool for well completion |
| 07/11/2007 | CN2921265Y Bridge packer |
| 07/11/2007 | CN2921264Y Underwell stepped polish rod sealer |
| 07/11/2007 | CN2921263Y Sealer and polish rod axiality protecting apparatus |
| 07/11/2007 | CN1997808A Method and system for inserting a fiber optical sensing cable into an underwater well |
| 07/11/2007 | CN1325754C Double action air leakage prevention agent for oil-gas well cementing, method for preparation and use thereof |
| 07/11/2007 | CN1325753C Apparatus for work under pressure for oil-water well |
| 07/10/2007 | US7241077 Underwater installation apparatus |
| 07/10/2007 | US7240736 Drilling and producing deep water subsea wells |
| 07/10/2007 | US7240735 Subsea wellhead assembly |
| 07/10/2007 | US7240732 Dispersant compositions for cement compositions and related methods |
| 07/10/2007 | US7240731 Shoe for expandable liner system and method |
| 07/10/2007 | US7240729 Apparatus for expanding a tubular member |
| 07/10/2007 | US7240728 Expandable tubulars with a radial passage and wall portions with different wall thicknesses |
| 07/10/2007 | US7240727 Armored stripper rubber |
| 07/10/2007 | CA2462154C System and method for low-pressure well completion |
| 07/10/2007 | CA2219206C Activating means for drilling apparatus |
| 07/06/2007 | CA2552072A1 Packer cups |
| 07/06/2007 | CA2532295A1 Packer cups |
| 07/05/2007 | WO2007075855A2 Concentric coiled tubing annular fracturing string |
| 07/05/2007 | WO2006091302A3 Fracturing isolation sleeve |
| 07/05/2007 | US20070151734 Method and apparatus for wellbore fluid treatment |
| 07/05/2007 | US20070151730 Cement compositions comprising particulate carboxylated elastomers and associated methods |
| 07/05/2007 | US20070151729 Methods of stimulating liquid-sensitive subterranean formations |
| 07/05/2007 | US20070151724 System and Method for Isolating a Wellbore Region |
| 07/05/2007 | US20070151723 Well Packing |
| 07/05/2007 | US20070151722 Deformable release device for use with downhole tools |
| 07/04/2007 | CN2918722Y Blow-out preventing uncoupling device |
| 07/03/2007 | US7238733 Well cementing; carbon black, lignite, brown coal, humic acid, butadiene-styrene latex; clay of bentonite, attapulgite, kalonite, hectorite, or sepiolite; 2-acrylamido-2-methylpropane sulfonic acid-,N-dimethylacrylamide copolymer; carrageen, scleroglucan, hydroxyethylcellulose, and gums |
| 07/03/2007 | US7237618 Stripper rubber insert assembly |
| 07/03/2007 | US7237615 Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel |
| 07/03/2007 | US7237611 Zero drill completion and production system |
| 07/03/2007 | US7237609 Methods for producing fluids from acidized and consolidated portions of subterranean formations |
| 07/03/2007 | US7237472 Linear hydraulic stepping actuator with fast close capabilities |
| 07/03/2007 | CA2468428C Downhole fluid separation system |
| 07/03/2007 | CA2464672C Deflation latch system for packers |
| 07/03/2007 | CA2463289C Cementing system for wellbores |
| 07/03/2007 | CA2457294C Expandable seal |
| 07/03/2007 | CA2442475C Smart cementing systems |
| 07/03/2007 | CA2386601C Bushing for a drilling rig |
| 07/03/2007 | CA2306739C Scoop for use with an anchor system for supporting a whipstock |