| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 05/30/2013 | WO2013036446A4 Method of deploying nanoenhanced downhole article |
| 05/30/2013 | WO2012127227A3 Blow out preventer |
| 05/30/2013 | US20130133894 Marine isolation assembly |
| 05/30/2013 | US20130133891 Equalization Valve |
| 05/30/2013 | US20130133888 Aqueous gels for well bore strengthening |
| 05/30/2013 | CA2854295A1 Ion exchange method of swellable packer deployment |
| 05/29/2013 | EP2596206A1 Method and system for sealing a wellbore |
| 05/29/2013 | DE112011102497T5 Bohrlochdichtung und Verfahren zur Schmierung eines Bohrlochwerkzeugs Downhole seal and method for lubricating a downhole tool |
| 05/29/2013 | CN202954780U Combined rubber plug for well cementation |
| 05/29/2013 | CN202954779U Novel flexible plug |
| 05/29/2013 | CN202954778U Pressure operation packer |
| 05/29/2013 | CN202954777U External plugging device |
| 05/29/2013 | CN202954776U Locating sealing device applied to horizontal water injection well layered seal and capable of back flushing and back injecting |
| 05/29/2013 | CN202954775U Deep sea floating type drilling BOP (Blow Out Preventer) storage and transportation device |
| 05/29/2013 | CN202954774U Blowout preventer (BOP) transporting device suitable for deep sea floating drilling |
| 05/29/2013 | CN202954773U Twin-stage self-adaption flashboard blowout preventer |
| 05/29/2013 | CN202954772U Whole rotation type annular preventer |
| 05/29/2013 | CN202954771U Injection-production integrated unthreaded rod sealer |
| 05/29/2013 | CN202954770U Self-sealing blowout preventing plug |
| 05/29/2013 | CN202954769U Rapid-mounting flange plate for oil well emergent spraying |
| 05/29/2013 | CN202954768U Lubricating anti-overflow oil well head packing box pressing cap seal device |
| 05/29/2013 | CN202954739U Casing buoyancy weight reduction system |
| 05/29/2013 | CN102052087B Using polyurethane foaming bag to block gas drainage hole |
| 05/29/2013 | CN101975040B Spill-preventing and blowout preventing device for sand washing |
| 05/29/2013 | CN101942997B Cementing wall packer channeling checking instrument |
| 05/29/2013 | CN101818638B Fracturing and separate zone production combined operation device and method |
| 05/29/2013 | CN101679846B Procedures and compositions for reservoir protection |
| 05/29/2013 | CA2809946A1 Tool and method for fracturing a wellbore |
| 05/28/2013 | US8448915 Increased shear power for subsea BOP shear rams |
| 05/28/2013 | US8448713 Inflatable tool set with internally generated gas |
| 05/28/2013 | US8448704 Method and system for monitoring the incursion of particulate material into a well casing within hydrocarbon bearing formations including gas hydrates |
| 05/28/2013 | US8448701 Wellhead protection tool |
| 05/28/2013 | US8448659 Check valve assembly for well stimulation operations |
| 05/28/2013 | CA2715149C Polymeric microspheres as degradable fluid loss additives in oilfield applications |
| 05/28/2013 | CA2683432C Flow-actuated pressure equalization valve for a downhole tool |
| 05/28/2013 | CA2642257C Zirconium cross-linking composition and methods of use |
| 05/28/2013 | CA2461524C Method of sealing subterranean zones |
| 05/23/2013 | WO2013074362A1 Formation fracturing |
| 05/23/2013 | WO2013074237A1 Gravel and fracture packing using fibers |
| 05/23/2013 | WO2013049487A3 Apparatus and method for galvanically removing from or depositing onto a device a metallic material downhole |
| 05/23/2013 | WO2012173870A3 Apparatus and method for connecting fluid lines |
| 05/23/2013 | WO2012151303A3 Liner cementation process and system |
| 05/23/2013 | WO2012028949A3 Dual activity drilling ship |
| 05/23/2013 | US20130129543 Stacked labyrinth chambers for use with an electrical submersible pump |
| 05/23/2013 | US20130126764 Multi-Deployable Subsea Stack System |
| 05/23/2013 | US20130126763 Blowout preventer and rams |
| 05/23/2013 | US20130126244 Ball and socket roller reamer and keyseat wiper |
| 05/23/2013 | US20130126191 Inflatable packer assembly |
| 05/23/2013 | US20130126190 Ion exchange method of swellable packer deployment |
| 05/23/2013 | US20130126185 System for increasing swelling efficiency |
| 05/23/2013 | US20130126177 Method for improving isolation of flow to completed perforated intervals |
| 05/23/2013 | US20130126170 Prevention, Actuation and Control of Deployment of Memory-Shape Polymer Foam-Based Expandables |
| 05/23/2013 | US20130126166 Calcium Phosphate Cement Compositions Comprising Pumice and/or Perlite and Associated Methods |
| 05/23/2013 | US20130126157 Self-Aligning and Leak Monitoring Stuffing Box |
| 05/23/2013 | US20130126153 Blowout Container |
| 05/23/2013 | US20130126151 Apparatus for Isolating and Completing Multi-Zone Frac Packs |
| 05/23/2013 | CA2855801A1 Formation fracturing |
| 05/22/2013 | EP2594731A2 Managed pressure cementing |
| 05/22/2013 | EP2593641A2 Process for backfilling a borehole and arrangement therefor |
| 05/22/2013 | EP2593637A2 Blowout preventer and launcher system |
| 05/22/2013 | EP2593636A2 Positive retraction latch locking dog for a rotating control device |
| 05/22/2013 | EP2593635A2 Low density cementitious compositions using limestone |
| 05/22/2013 | CN202946191U Porthole fixing device for capsule seal liquid pressure measuring equipment |
| 05/22/2013 | CN202946188U Gas extraction drilling hole multiphase medium plugging device |
| 05/22/2013 | CN202946119U Pour-point reduction and gas injection energization integrated construction tubular column for high pour-point oil stratums |
| 05/22/2013 | CN202946107U Electric bar dropper device |
| 05/22/2013 | CN202946106U Grouting-free forcing type float collar |
| 05/22/2013 | CN202946105U Single gliding inner sleeve full-bore drilling-free plug grading hoop |
| 05/22/2013 | CN202946104U Difunctional ball seat |
| 05/22/2013 | CN202946103U Half-path well-cementing stage cementing device without drilling inner sleeve |
| 05/22/2013 | CN202946102U Automatic-grouting drilling-easy float collar device |
| 05/22/2013 | CN202946101U Self-closing hole non-drilling type hydraulic pressure classification hoop |
| 05/22/2013 | CN202946100U Halfway well cementation self-grouting float collar |
| 05/22/2013 | CN202946099U Gas extraction drill hole group regional fracture field secondary grouting plugging device |
| 05/22/2013 | CN202946098U Ant-blocking structure of float collar float shoe |
| 05/22/2013 | CN202946097U Anti-blocking structure of float collar float shoe |
| 05/22/2013 | CN202946096U Anti-return device of cement paste |
| 05/22/2013 | CN202946095U Novel protection apparatus of rubber cylinder of compression packer, i.e., umbrella disc |
| 05/22/2013 | CN202946094U Double-power-source packer for air-tight seal detection of oil sleeve |
| 05/22/2013 | CN202946093U High-pressure water injection hole plugging device for long drill hole of coal mine |
| 05/22/2013 | CN202946092U Oil-wiping oil-receiving device of well mouth electric cable anti-spraying device |
| 05/22/2013 | CN202946091U Hand-operated sucker rod blowout preventer |
| 05/22/2013 | CN202946090U Marine oil and gas well subsea wellhead connection device |
| 05/22/2013 | CN202946089U Wellhead-rotatable type snubbing device |
| 05/22/2013 | CN202946088U Snubbing device of heavy oil thermal recovery well |
| 05/22/2013 | CN202946087U Manual hole-digging pile multifunction protective well cover |
| 05/22/2013 | CN202946086U Rotating control device |
| 05/22/2013 | CN202946085U Injection-extraction separated thermal recovery well mouth process device |
| 05/22/2013 | CN202946084U Injection-extraction integrated thermal recovery well mouth process device |
| 05/22/2013 | CN202946062U Device provided with slip sleeves in embedding mode and improving leaking stoppage effect of expansion pipe |
| 05/22/2013 | CN202946057U Collector with movable and static combination sealing structure |
| 05/22/2013 | CN202946034U Easy-positioning drill-free classification hoop center rod |
| 05/22/2013 | CN202946015U Main and auxiliary underwater system for deepwater drilling |
| 05/22/2013 | CN103119241A Method and system for testing a multiplexed BOP control system |
| 05/22/2013 | CN103114832A Interaction type stratified water injection measuring method |
| 05/22/2013 | CN103114825A Composite-material-made clamping tile and production method thereof |
| 05/22/2013 | CN103114824A Multi-time seat sealing device of packer |
| 05/22/2013 | CN103114823A Device and method utilizing icebound embolisms to plug drill hole in subsection mode |
| 05/22/2013 | CN103114822A Slip-type casing pipe hanger |
| 05/22/2013 | CN103114806A 旋挖钻机 Rotary Drilling Rig |