| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 07/08/2008 | CA2387546C Fluid profile control in enhanced oil recovery |
| 07/03/2008 | WO2008079882A2 Integrated flow control device and isolation element |
| 07/03/2008 | WO2008079486A1 Temporary containments for swellable and inflatable packer elements |
| 07/03/2008 | WO2008078070A1 Multiple bottom plugs for cementing operations |
| 07/03/2008 | WO2008059260A3 Improved tree plug |
| 07/03/2008 | US20080156502 Method and Device for Setting a Bottom Packer |
| 07/03/2008 | US20080156501 Non-backed-up packing element system |
| 07/03/2008 | US20080156500 Packer |
| 07/03/2008 | US20080156493 Solid Gas Migration Control Additives Based on Latex Powders for Cementing Applications |
| 07/03/2008 | US20080156492 Wellbore System Extending Through a Salt Layer |
| 07/03/2008 | US20080156491 Adding a cement set accelerator to a mixture of a hydraulic cement, cement kiln dust, water, and a set retarding additive that can remain in a pumpable fluid state for at least 1 day; introducing the mixture into a well bore; and allowing it to set. |
| 07/03/2008 | US20080156480 Apparatus for expanding a tubular member |
| 07/03/2008 | CA2681907A1 Methods of oil and gas production using waste water from water purification processing |
| 07/02/2008 | EP1778947B1 Methods and systems for cementing wells that lack surface casing |
| 07/02/2008 | CN201080805Y Releasing cementing tool |
| 07/02/2008 | CN201080804Y Multifunctional wellhead pressure test packer |
| 07/02/2008 | CN201080803Y Packer capable of repeatedly setting at down-hole |
| 07/02/2008 | CN201080802Y Horizontal well thermal production lead seal packer |
| 07/02/2008 | CN201080801Y Raising and hanging type eccentric water distributing apparatus plugging medicine dispensing apparatus |
| 07/02/2008 | CN201080800Y Screw seal device for oil pumping unit |
| 07/02/2008 | CN201080799Y Wellhead sealer |
| 07/02/2008 | CN201080798Y Split type shutter self-sealing device |
| 07/02/2008 | CN201080797Y Wellhead sealer anti-falling safety device |
| 07/02/2008 | CN201080796Y Double-wing packing kit packing loading and unloading dedicated tool |
| 07/02/2008 | CN201080742Y Oil well anti-stealing well cover lock |
| 07/02/2008 | CN100398778C Method of fluid flowing in main cylinder via template guide cylinder, and template guide cylinder |
| 07/01/2008 | US7392852 Zonal isolation using elastic memory foam |
| 07/01/2008 | US7392851 Inflatable packer assembly |
| 07/01/2008 | US7392844 Method of treating an oil or gas well with biodegradable low toxicity fluid system |
| 07/01/2008 | US7392840 Method and means to seal the casing-by-casing annulus at the surface for reverse circulation cement jobs |
| 06/29/2008 | CA2594268A1 Method of using radial thrust elements to re-enter a previously-installed tubular in a lateral |
| 06/27/2008 | CA2615548A1 Solid gas migration control additives based on latex powders for cementing applications |
| 06/27/2008 | CA2615212A1 Gas migration prevention solid additive based on crosslinked pva microgel for cementing applications |
| 06/26/2008 | WO2008074995A1 Electrical power storage and pressurised fluid supply system |
| 06/26/2008 | WO2008074973A1 Subsea coupling |
| 06/26/2008 | US20080149351 Temporary containments for swellable and inflatable packer elements |
| 06/26/2008 | US20080149350 Production actuated mud flow back valve |
| 06/26/2008 | US20080149349 Integrated flow control device and isolation element |
| 06/26/2008 | US20080149337 Methods of Cementing with Lightweight Cement Composition |
| 06/26/2008 | US20080149336 Multiple Bottom Plugs for Cementing Operations |
| 06/26/2008 | US20080149335 Activation Mechanism Applicable for Oilfield Chemicals Products |
| 06/26/2008 | US20080149328 Method and Product to Consolidate a Formation |
| 06/26/2008 | US20080149327 Groundwater collecting apparatus |
| 06/26/2008 | DE112005000893T5 Werkzeugfangvorrichtung und -verfahren Tool safety gear and procedures |
| 06/26/2008 | DE102006061327A1 Grafting copolymer, useful e.g. as additives in construction chemical applications, water retention agents and fluid loss additives, comprises silica, which is reacted with an unsaturated silane and a polymer containing sulfonic acid |
| 06/25/2008 | EP1745193B1 Blowout preventer and method for manipulating a ram block |
| 06/25/2008 | CN201078216Y Long-acting packer |
| 06/25/2008 | CN201078215Y Differential pressure type packer for oil field compression fracture |
| 06/25/2008 | CN201078214Y Self-locking type support packer |
| 06/25/2008 | CN201078213Y Pressing device for lower casing well mouth |
| 06/25/2008 | CN201078212Y Anti-leakage long-acting sealing device for pumping unit well mouth |
| 06/25/2008 | CN201078211Y New type testing bulkhead |
| 06/25/2008 | CN201078204Y Antipollution well-washing device |
| 06/25/2008 | CN101205802A Constant pressure arrangement |
| 06/25/2008 | CN101205801A Pumping unit polish rod centralized connecting device |
| 06/25/2008 | CN100396880C Method for cementing underground reservoir or repairing sand filling |
| 06/24/2008 | US7389823 Retrievable bridge plug |
| 06/24/2008 | US7389818 Method and device by a displacement tool |
| 06/24/2008 | US7389817 Riser control device |
| 06/24/2008 | US7389815 Methods for reverse-circulation cementing in subterranean formations |
| 06/21/2008 | CA2612357A1 2d well testing with smart plug sensors |
| 06/19/2008 | WO2008072975A1 Gripping means for use with a unit insertable in a pipeline |
| 06/19/2008 | WO2008071912A1 Method and apparatus for completing and fluid treating a wellbore |
| 06/19/2008 | US20080144759 Method of Coupling Tubular Member |
| 06/19/2008 | US20080142746 Mounts for blowout preventer bonnets |
| 06/19/2008 | US20080142229 Apparatus for Radially Expanding and Plastically Deforming a Tubular Member |
| 06/19/2008 | US20080142221 Swellable polymeric materials |
| 06/19/2008 | US20080142215 Methods and apparatus for harvesting potential energy downhole |
| 06/19/2008 | US20080142210 Drilling Flange and Independent Screwed Wellhead With Metal-to-Metal Seal and Method of Use |
| 06/19/2008 | CA2672504A1 Gripping means for use with a unit insertable in a pipeline |
| 06/18/2008 | EP1933004A1 Method of controlling hardening of a compound in a wellbore |
| 06/18/2008 | EP1625281B1 Reverse circulation cementing process |
| 06/18/2008 | EP1476637B1 Method for selecting a cementing composition for cementing wells |
| 06/18/2008 | CN201074501Y Self-filling type current limiting valve |
| 06/18/2008 | CN201074499Y Float shoe for bare eye expansion system |
| 06/18/2008 | CN201074498Y Back-off affusion packer |
| 06/18/2008 | CN201074497Y Back-off affusion packer |
| 06/18/2008 | CN201074496Y Single flashboard dual duct blowout preventer for testing oil |
| 06/18/2008 | CN201074495Y Well head airproof device for multifunctional oil well |
| 06/18/2008 | CN201074494Y Blanking plug for testing pressure of well head |
| 06/18/2008 | CN201074493Y Anti-theft cover for well head packing kit |
| 06/18/2008 | CN101203656A Dth-hammer drilling device and overburden drilling method |
| 06/18/2008 | CN101201005A Anchor bar/anchorage cable water stopper and method of use thereof |
| 06/18/2008 | CN100395474C Sealing method, sealing connection mechanism, sealing mechanism and sealing |
| 06/17/2008 | US7388153 Polypropylene cable jacket compositions with enhanced melt strength and physical properties |
| 06/17/2008 | US7387174 Device and method of lining a wellbore |
| 06/17/2008 | US7387170 Expandable packer with mounted exterior slips and seal |
| 06/17/2008 | US7387169 Expandable tubulars |
| 06/17/2008 | US7387166 Electrically operated actuation tool for subsea completion system components |
| 06/17/2008 | US7387159 Blending system for solid/fluids mixtures |
| 06/17/2008 | US7387158 Self energized packer |
| 06/17/2008 | US7387157 Dynamic inflatable sealing device |
| 06/17/2008 | CA2541750C Method of subsurface lubrication to facilitate well completion, re-completion and workover |
| 06/17/2008 | CA2512263C Cup tool for a high-pressure mandrel and method of using same |
| 06/17/2008 | CA2486348C Choke valve with temperature transmitter |
| 06/17/2008 | CA2482184C Apparatus and method of detecting interfaces between well fluids and for detecting the launch of a device in oilfield applications |
| 06/17/2008 | CA2392147C Sealing off openings through the wall of a well tubular |
| 06/17/2008 | CA2381286C Drilling and completion system for multilateral wells |
| 06/17/2008 | CA2373164C Recovery of production fluids from an oil or gas well |
| 06/17/2008 | CA2370186C Method and multi-purpose apparatus for control of fluid in wellbore casing |