| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/03/2010 | CN201396102Y Under-balanced drilling underground internal blowout preventer |
| 02/03/2010 | CN201396101Y Hydraulic control device of thermal production casing head |
| 02/03/2010 | CN201396100Y Pressure relief anti-theft plug for oil and water wells |
| 02/03/2010 | CN201396099Y Device for preventing oil-stealing |
| 02/03/2010 | CN201396098Y Rod-pumped well packing box |
| 02/03/2010 | CN201396097Y Eccentric wellhead for well test |
| 02/03/2010 | CN201396096Y Sealing rubber strip of oil well sealer |
| 02/03/2010 | CN101638979A Technology for water shutoff, leaking stoppage and secondary well cementation of oil-water wells |
| 02/02/2010 | US7654334 Downhole tool and running tool system for retrievably setting a downhole tool at locations within a well bore |
| 02/02/2010 | US7654329 Dual-type plug for wellhead |
| 02/02/2010 | US7654326 for servicing well bores; slurrying |
| 02/02/2010 | US7654325 Methods and apparatus for handling and drilling with tubulars or casing |
| 02/02/2010 | US7654324 Reverse-circulation cementing of surface casing |
| 02/02/2010 | CA2641601C Method and apparatus to complete a well having tubing inserted through a valve |
| 02/02/2010 | CA2596019C Casing mandrel for facilitating well completion, re-completion or workover |
| 01/28/2010 | WO2010010326A2 Pipeline entry system |
| 01/28/2010 | WO2010009830A1 Control of the properties of cement slurries of normal densities with optimized polymers combination |
| 01/28/2010 | WO2010009510A1 A tool and method |
| 01/28/2010 | WO2009132300A3 Subsea pressure delivery system |
| 01/28/2010 | US20100019456 Coatings for downhole seal materials and method of making the same |
| 01/28/2010 | US20100018716 Adjustable Hanger for Inner Production Riser |
| 01/28/2010 | US20100018708 Control of the Properties of Cement Slurries of Normal Densities With Optimized Polymers Combination |
| 01/28/2010 | US20100018694 Eutectic material-based seal element for packers |
| 01/27/2010 | EP2147902A1 Control of the properties of cement slurries of normal densities with optimized polymers combination |
| 01/27/2010 | EP2147187A2 Method and apparatus for measuring a parameter within the well with a plug |
| 01/27/2010 | EP2147186A2 Stormwater filter assembly |
| 01/27/2010 | CN201391306Y Filter device of hydraulic system of surface blowout preventer control device |
| 01/27/2010 | CN201391289Y Combined operation string for natural gas well production |
| 01/27/2010 | CN201391277Y Electrically controlled surface blowout preventer control rotary valve |
| 01/27/2010 | CN201391274Y Anti-theft valve used for well site technology |
| 01/27/2010 | CN201391271Y Device for detecting pressure resistance and temperature resistance of packer |
| 01/27/2010 | CN201391270Y Water pressure test packing device for drill holes with conventional diameter |
| 01/27/2010 | CN201391269Y Kettle cover sealing device of oil well cement high-temperature and high-pressure curing kettle |
| 01/27/2010 | CN201391268Y Multifunctional fast-assembled type cable blowout control box |
| 01/27/2010 | CN201391267Y Drag reduction multifunctional well plugging device |
| 01/27/2010 | CN201391266Y Automatic regulation device for sliding-disc eccentric wellhead |
| 01/27/2010 | CN201391265Y Antitheft plug of sleeve valve of oil well and opening wrench thereof |
| 01/27/2010 | CN201391264Y Wellhead anti-theft and anti-blowout device |
| 01/27/2010 | CN201391263Y Fiber optic testing and injection device of thermal recovery horizontal well |
| 01/27/2010 | CN201391262Y Combined type oil extractor packing box |
| 01/27/2010 | CN201391260Y Combined-type tool for replacing packing of oil pumping unit |
| 01/26/2010 | US7650945 Inflatable closure system |
| 01/26/2010 | US7650944 Vessel for well intervention |
| 01/26/2010 | US7650943 Hydraulic control system |
| 01/26/2010 | US7650942 Sub sea control and monitoring system |
| 01/26/2010 | US7650940 Cement compositions comprising particulate carboxylated elastomers and associated methods |
| 01/26/2010 | US7650936 Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use |
| 01/26/2010 | CA2364250C Cementing compositions and foaming of such compositions for application to cementing oil wells or the like |
| 01/21/2010 | WO2010009262A2 Interventionless set packer and setting method for same |
| 01/21/2010 | WO2010007403A1 Well tool |
| 01/21/2010 | WO2009131844A3 Subsea inflatable bridge plug inflation system |
| 01/21/2010 | US20100012330 Interventionless Set Packer and Setting Method for Same |
| 01/21/2010 | US20100012327 Accumulator for subsea equipment |
| 01/21/2010 | US20100012324 Top filling tubing |
| 01/21/2010 | US20100012320 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 01/21/2010 | US20100012319 Plug and method for establishing such plug inside a pipe |
| 01/21/2010 | US20100012318 Completion assembly |
| 01/21/2010 | US20100012314 Method and downhole tool actuator |
| 01/21/2010 | CA2672360A1 Rcd hydraulic stripping adapter |
| 01/20/2010 | EP2145076A1 Methods and devices for treating multiple-interval well bores |
| 01/20/2010 | CN201386544Y Environmental protection umbrella for oil extractor and well mouth |
| 01/20/2010 | CN201386537Y Cleaning tool for cementing truck used for oilfield cementing |
| 01/20/2010 | CN201386536Y Oil pipe blanking plug |
| 01/20/2010 | CN201386535Y Hydraulic isolator applicable to oil drilling and well completion |
| 01/20/2010 | CN201386534Y Liquid-pull-type packing releasing tool |
| 01/20/2010 | CN201386533Y Well-head angle blowout control valve |
| 01/20/2010 | CN201386532Y Blowout preventer cover hydraulic drawing-type double-gate segment blowout preventer |
| 01/20/2010 | CN201386531Y Blowout preventer of oil well |
| 01/20/2010 | CN201386530Y Wellhead lathedog anti-dismantling device |
| 01/20/2010 | CN201386529Y Multifunctional aligning device of oil production well head |
| 01/20/2010 | CN201386528Y Subsidence thickened-oil leakage-proof polish rod sealer |
| 01/20/2010 | CN201386527Y Combined type hydraulic oil-water well snubbing unit |
| 01/20/2010 | CN201386526Y Plunger capture device used for plunger gas-lift well mouth |
| 01/20/2010 | CN101629480A Inner blowout preventer of full-port drilling tool |
| 01/19/2010 | US7647988 Method and system for installing geothermal transfer apparatuses with a sonic drill |
| 01/19/2010 | US7647980 Drillstring packer assembly |
| 01/19/2010 | US7647970 Self-sealing well cement composition |
| 01/19/2010 | US7647964 Degradable ball sealers and methods for use in well treatment |
| 01/19/2010 | CA2586327C Well isolation device with disengagable constraint for frangible barrier |
| 01/19/2010 | CA2521357C Wellbore fluid saver assembly |
| 01/14/2010 | WO2010005990A2 Enhanced geothermal systems and reservoir optimization |
| 01/14/2010 | WO2010005907A1 Method to detect casing point in a well from resistivity ahead of the bit |
| 01/14/2010 | WO2010005893A2 Locking arrangement to store setting forces |
| 01/14/2010 | WO2010005883A2 A device and system for well completion and control and method for completing and controlling a well |
| 01/14/2010 | WO2010005619A1 Hydraulic connector |
| 01/14/2010 | WO2010004250A1 Downhole tool with multiple material retaining ring |
| 01/14/2010 | WO2010004035A1 Sealing arrangement and sealing method |
| 01/14/2010 | WO2010003879A2 A wireline lubricator |
| 01/14/2010 | WO2009129240A3 Selective zonal testing using a coiled tubing deployed submersible pump |
| 01/14/2010 | US20100007089 Metal seal adjustable casing sub |
| 01/14/2010 | US20100006340 Downhole reservoir effluent column pressure restraining apparatus and methods |
| 01/14/2010 | US20100006303 Shape memory material seals |
| 01/14/2010 | US20100006301 Open Water Recoverable Drilling Protector |
| 01/14/2010 | US20100006289 Method and apparatus for sealing abandoned oil and gas wells |
| 01/14/2010 | US20100006288 Sorel cements and methods of making and using same |
| 01/14/2010 | US20100006280 Downhole tool with multiple material retaining ring |
| 01/14/2010 | CA2730228A1 A device and system for well completion and control and method for completing and controlling a well |
| 01/14/2010 | CA2729922A1 Downhole tool with multiple material retaining ring |
| 01/14/2010 | CA2725279A1 Sealing arrangement and sealing method |
| 01/13/2010 | EP2143875A2 Multi-purpose float |