| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 02/17/2011 | US20110036561 Retractable Downhole Backup Assembly for Circumferential Seal Support |
| 02/17/2011 | CA2770514A1 Wellhead pipe coupling |
| 02/16/2011 | EP2284358A2 Single trip, tension set, metal-to-metal sealing, internal lockdown tubing hanger |
| 02/16/2011 | EP2284357A2 Apparatus for gripping a tubular on a drilling rig |
| 02/16/2011 | EP2284356A2 Apparatus for gripping a tubular on a drilling rig |
| 02/16/2011 | EP2284355A2 Apparatus for gripping a tubular on a drilling rig |
| 02/16/2011 | EP2283905A2 Subsea well production flow and separation system |
| 02/16/2011 | EP2283206A1 Arrangement in a hose connection between a wellhead and a surface installation |
| 02/16/2011 | EP2283205A1 Underwater device for rov installable tools |
| 02/16/2011 | CN201747360U Manual pressure testing device for well plugging device |
| 02/16/2011 | CN201747358U Self-expansion packer wellbore simulation test device |
| 02/16/2011 | CN201747331U Horizontal well mud cake cleaner |
| 02/16/2011 | CN201747323U Adjustable drilling platform for inner-string cementing well cementation |
| 02/16/2011 | CN201747322U Plug drilling free cementing device |
| 02/16/2011 | CN201747321U Oil-well pump slice mining converter |
| 02/16/2011 | CN201747320U Polymer-flooding adjustable blanking plug |
| 02/16/2011 | CN201747319U Reverse-pressurizing multi-stage expansion cylinder |
| 02/16/2011 | CN201747318U Side door hydraulic cylinder of hydraulic flashboard blowout preventer |
| 02/16/2011 | CN201747317U Long-distance electric pneumatic control system of ground blowout preventer |
| 02/16/2011 | CN201747316U Double-locked inserted metal sealing mechanism |
| 02/16/2011 | CN201747315U One-stage double hung type casing head |
| 02/16/2011 | CN201747314U Energy-saving oil production wellhead device |
| 02/16/2011 | CN201747313U High pressure oil and gas well safety control device |
| 02/16/2011 | CN201747312U Backflow prevention oil extraction wellhead device |
| 02/16/2011 | CN101978132A Method and apparatus for in situ testing of gas flow controllers |
| 02/16/2011 | CN101975041A Well cementing method around coal bed and device thereof |
| 02/16/2011 | CN101975040A Spill-preventing and blowout preventing device for sand washing |
| 02/16/2011 | CN101975039A Water buoy multilayer tieback pipe tieback device for deepwater drilling operation |
| 02/15/2011 | USRE42137 Universal cementing plug |
| 02/15/2011 | US7886833 System and method for low-pressure well completion |
| 02/15/2011 | US7886827 Apparatus for, and method of, landing items at a well location |
| 02/15/2011 | US7886826 Gel capsules for solids entrainment |
| 02/15/2011 | US7886818 Expandable packer system |
| 02/15/2011 | CA2606406C Slotted slip element for expandable packer |
| 02/15/2011 | CA2603100C Downhole sealing for production tubing |
| 02/15/2011 | CA2561675C Deploying an assembly into a well |
| 02/15/2011 | CA2559677C Modular well tool system |
| 02/15/2011 | CA2506554C Methods and cement compositions for cementing in subterranean zones |
| 02/10/2011 | WO2011015972A1 System and method for preserving a hydraulic packer |
| 02/10/2011 | WO2011015835A1 Expansion device |
| 02/10/2011 | WO2010117851A3 Cement as anchor for expandable tubing |
| 02/10/2011 | WO2010051165A3 Elastic hollow particles for annular pressure buildup mitigation |
| 02/10/2011 | US20110031700 Seal assembly for a pressure plate in a blowout preventer |
| 02/10/2011 | US20110031421 Blowout preventer having wear, seal and guide plate inserts |
| 02/10/2011 | US20110030976 Tubular actuator, system and method |
| 02/10/2011 | US20110030975 Tubular system with selectively engagable sleeves and method |
| 02/10/2011 | US20110030954 Use of swellable material in an annular seal element to prevent leakage in a subterranean well |
| 02/10/2011 | US20110030943 Portable Ram Block Changer |
| 02/10/2011 | US20110030805 Blowout preventer with lock |
| 02/10/2011 | CA2772466A1 Expansion device with slips and wedges having bridges |
| 02/10/2011 | CA2711717A1 Blowout preventer having wear, seal and guide plate inserts |
| 02/10/2011 | CA2711654A1 Blowout preventer with lock |
| 02/09/2011 | EP2282004A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 02/09/2011 | EP2282002A2 Method and apparatus for stimulation of multiple formation intervals |
| 02/09/2011 | EP2282001A2 Improvements to swellable apparatus and materials therefor |
| 02/09/2011 | EP2282000A2 Running tool that prevents seal test |
| 02/09/2011 | EP2281999A2 BOP and separator combination |
| 02/09/2011 | EP2281998A2 Methods and apparatus for subsea well intervention and subsea wellhead retrieval |
| 02/09/2011 | EP2281106A1 System for pulse-injecting fluid into a borehole |
| 02/09/2011 | EP2281104A1 Distributed databases for a well control drilling system |
| 02/09/2011 | CN201739315U Well hoop theft-proof bolt |
| 02/09/2011 | CN201738915U Sealing and suppressing device of well sealing device for oil field |
| 02/09/2011 | CN201738914U Down-hole electronic intelligent shut-off device |
| 02/09/2011 | CN201738905U Layered oil extraction device of oil well |
| 02/09/2011 | CN201738878U Upper oil pipe orifice flow controller |
| 02/09/2011 | CN201738877U Vertical cementing manifold used for ocean |
| 02/09/2011 | CN201738874U Friction type built-in float collar used for oil and gas well |
| 02/09/2011 | CN201738873U Device integrating bridge plug and perforation used for continuous oil pipe operation |
| 02/09/2011 | CN201738872U Fishable bridge plug of oil well |
| 02/09/2011 | CN201738871U Anti-rotating well cementation rubber stopper with self-locking mechanism |
| 02/09/2011 | CN201738870U Multifunctional expanding packer |
| 02/09/2011 | CN201738869U Drillable ball-pitching sliding sleeve for horizontal well |
| 02/09/2011 | CN201738868U Double-group sealed high-pressure water-injection packer |
| 02/09/2011 | CN201738867U Pre-filling self-expandable packer for well completion |
| 02/09/2011 | CN201738866U Anti-pollution well-cleaning packer |
| 02/09/2011 | CN201738865U Shaft annular space hydraulic expansion packer |
| 02/09/2011 | CN201738864U Oil well anti-clamping packer |
| 02/09/2011 | CN201738863U Sucker rod blowout-prevention plug valve for oil field |
| 02/09/2011 | CN201738862U Deep water hydraulic connector |
| 02/09/2011 | CN201738861U Freezing and temporary blocking device |
| 02/09/2011 | CN201738860U Integrated well head diverter main body for oil-field well head device |
| 02/09/2011 | CN201738859U Pumping well flange disc |
| 02/09/2011 | CN201738824U Ground drilling casing capable of preventing mining damage |
| 02/09/2011 | CN101967966A Anti-sand burying salvaging single-rubber barrel downhole choke |
| 02/09/2011 | CN101967964A Method for prewashing multi-density double-setting long-sealing gas channeling prevention well cementing |
| 02/09/2011 | CN101967959A Sealing protecting device for underground oil mining machine |
| 02/08/2011 | CA2631038C Plugging a side pocket mandrel using a swelling plug |
| 02/08/2011 | CA2625662C Methods and devices for treating multiple-interval well bores |
| 02/08/2011 | CA2621572C Bottomhole assembly and method for stimulating a well |
| 02/08/2011 | CA2416562C A cementing composition including a dispersant agent for cementing operation in oil wells |
| 02/03/2011 | WO2011014055A1 A system for completing wells in unconsolidated subterranean zone |
| 02/03/2011 | US20110024195 Drilling with a high pressure rotating control device |
| 02/03/2011 | US20110024115 Method to Control Driving Fluid Breakthrough During Production of Hydrocarbons from a Subterranean Reservoir |
| 02/03/2011 | US20110024114 Cement composition comprising mixture of organic and inorganic fibres for curing severe losses especially in the reservoir section |
| 02/03/2011 | US20110024113 Visco-elastic surfactant spacers |
| 02/03/2011 | DE19826323B4 Dichtungsanordnung Seal assembly |
| 02/02/2011 | EP2044289B1 Packer variable volume excluder and sampling method therefor |
| 02/02/2011 | CN201730608U Comprehensive logging instrument for underground layered string inspection |
| 02/02/2011 | CN201730590U Underground underbalanced sleeve valve with circular arc type slide mandrel |
| 02/02/2011 | CN201730587U Shaft angle adjustor for cement slurry replacement efficiency simulators |