| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 08/16/2007 | US20070187146 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/16/2007 | US20070187115 Downhole actuating apparatus and method |
| 08/16/2007 | US20070187114 Method and apparatus to complete a well having tubing inserted through a valve |
| 08/16/2007 | US20070187110 Method and apparatus for production in oil wells |
| 08/16/2007 | US20070187099 Methods and Compositions for Sealing Fractures, Voids, and Pores of Subterranean Rock Formations |
| 08/16/2007 | US20070187098 Permeable zone and leak plugging using cross-linking composition comprising delay agent |
| 08/16/2007 | US20070187097 introducing into subterranean formation treatment fluid consolidating agent emulsion comprising aqueous fluid, surfactant, and non-aqueous tackifying agent; composition comprises aqueous external phase and oil internal phase, and does not include tertiary amine surfactant; minimizes particulate migration |
| 08/16/2007 | US20070187090 Methods of cleaning sand control screens and gravel packs |
| 08/16/2007 | CA2637301A1 Wellbore method and apparatus for completion, production and injection |
| 08/16/2007 | CA2637040A1 Wellbore system using shunt tubes |
| 08/15/2007 | EP1817481A2 Downhole swivel apparatus and method |
| 08/15/2007 | EP1817478A1 Elevator for use in handling pipe and method for handling pipe |
| 08/15/2007 | EP1817477A1 Apparatus and method for guiding pipe |
| 08/15/2007 | CN2934568Y Seal-testing assembly for underlayer oil extraction |
| 08/15/2007 | CN2934561Y Single pump well-cementing cement truck |
| 08/15/2007 | CN2934560Y Built-in type mine mouth theft-proof plug |
| 08/15/2007 | CN2934559Y Anti-bias friction and anti-spray well port polished rod seal device |
| 08/15/2007 | CN2934558Y Minute adjustment long-acting polished rod sealer |
| 08/15/2007 | CN101016830A Blowout-preventer of packing set |
| 08/14/2007 | US7255178 Drillable bridge plug |
| 08/14/2007 | US7255170 Placing a composition of a hydraulic cement, water, a gas and a mixture of an alkali salt of an alkyl ether sulfate surfactant, and an alkyl or alkene amidopropyl betaine surfactant, and sodium chloride; either above ground or into a portion of a subterranean formation |
| 08/14/2007 | US7255163 Convertible rotary seal for progressing cavity pump drivehead |
| 08/14/2007 | US7255162 Methods and apparatus for use in subterranean cementing operations |
| 08/14/2007 | CA2526837C Downhole surge pressure reduction and filtering apparatus |
| 08/14/2007 | CA2425058C Expandable float shoe and associated methods |
| 08/14/2007 | CA2273568C A method of installing a casing in a well and apparatus therefor |
| 08/13/2007 | CA2536451A1 Bop drill string and tubing string monitoring system |
| 08/09/2007 | US20070181345 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 08/09/2007 | US20070181309 Slimline tieback connector |
| 08/08/2007 | CN2931770Y Small-sized dry mixing tank |
| 08/08/2007 | CN2931769Y Skid-mounted dry mixing device |
| 08/08/2007 | CN2931768Y Small diameter water plugging packer |
| 08/08/2007 | CN2931767Y Production-injection integrated packer |
| 08/08/2007 | CN2931766Y 油田井口防盗装置 Oilfield wellhead anti-theft device |
| 08/08/2007 | CN2931765Y Multifunctional combined oil producing wellhead device |
| 08/08/2007 | CN101012739A Pressure equalization type static sealed pressurized well-repairing working device |
| 08/08/2007 | CN101012738A Corrosion resistant multifunctional high-pressure well mouth apparatus |
| 08/07/2007 | US7252162 Method and device for injecting a fluid into a formation |
| 08/07/2007 | US7252152 Methods and apparatus for actuating a downhole tool |
| 08/07/2007 | US7252151 Drilling method |
| 08/07/2007 | US7252147 Cementing methods and systems for initiating fluid flow with reduced pumping pressure |
| 08/07/2007 | US7252142 Annular isolators for expandable tubulars in wellbores |
| 08/07/2007 | CA2514676C A plug for use in wellbore operations, an apparatus for receiving said plug, a plug landing system and a method for cementing tubulars in a wellbore |
| 08/07/2007 | CA2472824C Straddle packer with third seal |
| 08/07/2007 | CA2470592C Expanding downhole tubing by compression |
| 08/07/2007 | CA2448405C Subsurface annular safety barrier |
| 08/07/2007 | CA2201945C A mechanical overload protection device |
| 08/02/2007 | WO2007086753A1 A hotstab device for use under water |
| 08/02/2007 | WO2007086722A1 Electrical power transmission system |
| 08/02/2007 | WO2007085059A1 A disengageable spindle drive |
| 08/02/2007 | WO2007085047A1 Remote plugging device for wells |
| 08/02/2007 | WO2007085046A1 Bore selector |
| 08/02/2007 | WO2007029214A3 Seal assembly |
| 08/02/2007 | US20070175668 Process and system for drilling and lining a bore hole |
| 08/02/2007 | US20070175663 Measuring device and drilling device for deep drillings |
| 08/02/2007 | US20070175634 Apparatus and method for repairing failure spots on subterranean well tubulars using shock waves |
| 08/02/2007 | US20070175626 Wellhead Blowout Preventer With Extended Ram for Sealing Central Bore |
| 08/02/2007 | US20070175625 Polish Rod Clamping Device |
| 08/02/2007 | CA2644682A1 A disengageable spindle drive |
| 08/01/2007 | EP1812681A2 Apparatus and method for use in a well bore |
| 08/01/2007 | EP1812680A1 Improved valve |
| 08/01/2007 | EP1709292B1 Method of creating a zonal isolation in an underground wellbore |
| 08/01/2007 | EP1694941B1 Device for removal and filtration of drilling fluid |
| 08/01/2007 | EP1360392B1 Safety valve for oil wells |
| 08/01/2007 | CN2929166Y Throttling well killing device |
| 08/01/2007 | CN2929165Y Grading cement filling device without drill plug |
| 08/01/2007 | CN2929164Y Fishable cement transfer device for branch well and horizontal well |
| 08/01/2007 | CN2929163Y Hydropower compression type packer |
| 08/01/2007 | CN2929162Y Wellhead in-site test pressure complete set device |
| 08/01/2007 | CN2929161Y Novel hydraulic perforation blowout preventor |
| 08/01/2007 | CN2929160Y Anti-splash device for drilling well |
| 08/01/2007 | CN2929159Y Hot production wellhead device |
| 08/01/2007 | CN2929158Y Wellhead device of concentric double tube injection water |
| 08/01/2007 | CN2929157Y Wellhead compensator of hot liquid paraffin removing for oil well |
| 08/01/2007 | CN1329623C Subsea repairing well system and method for introducing the tool into the subsea repairing well or the subsea pipe line |
| 08/01/2007 | CN1329622C A method and device by a displacement tool |
| 08/01/2007 | CN101008311A Repairing casing technology for K type down-hole packer without working |
| 08/01/2007 | CN101008310A Portable hydraulic blowout preventer for water injection profile logging |
| 07/31/2007 | US7249633 Release tool for coiled tubing |
| 07/31/2007 | US7249632 Top drive swivel apparatus and method |
| 07/31/2007 | CA2576482A1 Polish rod clamping device |
| 07/31/2007 | CA2342387C Blowout preventer ram actuating mechanism |
| 07/27/2007 | CA2576333A1 Wellhead blowout preventer with extended ram for sealing central bore |
| 07/26/2007 | WO2007084657A1 Self energized packer |
| 07/26/2007 | WO2007084006A1 Cementing valve |
| 07/26/2007 | WO2007050161A3 Downhole tool |
| 07/26/2007 | US20070173418 Treatment fluids comprising starch and ceramic particulate bridging agents and methods of using these fluids to provide fluid loss control |
| 07/26/2007 | US20070169943 Method and device for establishing an underground well |
| 07/26/2007 | US20070169942 Flow Control Device |
| 07/26/2007 | US20070169940 Tubing hanger and wellhead housing with mating tubing annulus passages |
| 07/26/2007 | US20070169937 Methods of using lost circulation compositions |
| 07/26/2007 | US20070169936 slurry of cement, water and super-absorbent polymer which absorbs free water in slurry to form gel ore when placed in well, and which releases absorbed water to cement hydration reaction as cement sets; poly(2-propenamide-co-2-propenoic acid sodium salt), polyacrylamide, modified crosslinked polyacrylate |
| 07/26/2007 | US20070169935 Degradable ball sealers and methods for use in well treatment |
| 07/26/2007 | CA2637410A1 Cementing valve |
| 07/25/2007 | EP1809859A1 A method and a device for setting a casing |
| 07/25/2007 | EP1809858A1 Improvements in or relating to hydraulic rams |
| 07/25/2007 | EP1809857A1 Drilled well end section |
| 07/25/2007 | EP1809817A1 Method for saturating cavities present in a mass of soil or in a body in general |
| 07/25/2007 | EP1549823B1 Bottom plug for forming a mono diameter wellbore casing |
| 07/25/2007 | EP1485572B1 Compositions for restoring lost circulation |