Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
05/2010
05/12/2010EP2184437A2 Swellable apparatus and method
05/12/2010EP2184436A2 Wellbore apparatus and method
05/12/2010EP2183462A1 Method and apparatus for isolating a jet forming aperture in a well bore servicing tool
05/12/2010CN201461963U Universal combined sealer
05/12/2010CN201460871U Disconnectable cable bridge device for floating drilling rig
05/12/2010CN201460853U Lossless fracturing string
05/12/2010CN201460833U Selective oil production string
05/12/2010CN201460823U Multifunctional double-acting hydraulic oil production device
05/12/2010CN201460815U Atmospheric-pressure ball-loading self-sealing type hermetical ball injecting device
05/12/2010CN201460812U Arrow-shaped check valve
05/12/2010CN201460807U Sided oil drain device
05/12/2010CN201460806U Mechanical bridge plug
05/12/2010CN201460805U Hole-sealing coal rock strata injector for automatically adjusting unseal pressure
05/12/2010CN201460804U Hole-sealing coal rock strata injector for adjusting unseal pressure
05/12/2010CN201460803U Oil/water self-expanding packer
05/12/2010CN201460802U Insertion pipe packer
05/12/2010CN201460801U Thermal flushing packer
05/12/2010CN201460800U Reclaimed oil pipe blocking valve
05/12/2010CN201460799U Concentric integrated water-plugging finding pipe column
05/12/2010CN201460798U Novel static pressure packer
05/12/2010CN201460797U Conical rubber core of universal blowout preventer
05/12/2010CN201460796U Ball-shaped rubber core of universal blowout preventer
05/12/2010CN201460795U Drill stem fixed clamp
05/12/2010CN201460794U Rotary variable-diameter blowout preventer flashboard
05/12/2010CN201460793U Adjustable polarized rod sealer
05/12/2010CN201460792U Special tool for high-pressure reciprocating pump dialing packing box assembly
05/12/2010CN201460791U Oil field natural gas well mouth device with gas well safety control system
05/12/2010CN201460790U Safe and environment-friendly test lubricator
05/12/2010CN201460789U Low pressure wellhead cable seal tool
05/12/2010CN201460788U Automatic aligning and deviation-adjusting polish rod sealing device
05/12/2010CN201460787U Oil pipe spray and extract sealing device
05/12/2010CN201460783U Pressure wave generating device for vibration cementing
05/12/2010CN201460778U Expansion pipe type tail pipe hanger
05/12/2010CN201460772U Self-sealing sand-flushing device
05/12/2010CN201460723U Combined drilling tool with drill hole control grouting device
05/12/2010CN1900475B Drilling/feed drill/withdrawing drill sealing device for high pressure water rock layer and grouting withdrawing drill method
05/12/2010CN1858399B Electric hydraulic packer for oil pipe
05/12/2010CN1858397B Diameter adjustable blowout preventer for oil field
05/12/2010CN101705802A Anti-crossflow packing particles for production sections of oil and gas wells
05/12/2010CN101705801A combined annular blowout preventer
05/12/2010CN101705788A Construction method using blowout plug to shield oblique drilling hole
05/11/2010US7712541 System and method for protecting downhole components during deployment and wellbore conditioning
05/11/2010US7712531 Methods for controlling particulate migration
05/11/2010US7712530 Pre-stressed annular sealant and method of creating a durable seal in a well bore annulus
05/11/2010US7712527 Use of micro-electro-mechanical systems (MEMS) in well treatments
05/11/2010US7712523 Top drive casing system
05/11/2010US7712521 Device of a test plug
05/11/2010CA2685235A1 Wellbore apparatus and method
05/11/2010CA2571787C Improved well servicing tool storage system for subsea well intervention
05/11/2010CA2517093C Compositions and methods of cementing in subterranean formations using a swelling agent to inhibit the influx of water into a cement slurry
05/11/2010CA2471488C Bore isolation
05/06/2010WO2010051165A2 Elastic hollow particles for annular pressure buildup mitigation
05/06/2010WO2010050870A1 Injecting device, drill rig and method of rock bolting
05/06/2010WO2010050827A1 Y-joint for connectiong a subsea wellhead to a riser
05/06/2010WO2010049664A1 Cement head
05/06/2010WO2010031052A3 Method of determining borehole conditions from distributed measurement data
05/06/2010WO2010026215A3 Lining of well bores with expandable and conventional liners
05/06/2010WO2010005883A3 A device and system for well completion and control and method for completing and controlling a well
05/06/2010WO2009158340A3 Improved well drilling method for prevention of lost circulation of drilling muds
05/06/2010US20100108332 Valve Assembly
05/06/2010CA2741812A1 Injecting device, drill rig and method of rock bolting
05/05/2010EP2182166A2 Method and apparatus for testing swellable materials
05/05/2010EP2181245A1 Sealing assembly
05/05/2010EP2181244A1 Tapered bearing assembly cover plate and well drilling equipment comprising same
05/05/2010EP2181243A1 Stripper rubber pot mounting structure and well drilling equipment comprising same
05/05/2010EP2181242A1 Heat exchanger system and well drilling equipment comprising same
05/05/2010CN201448088U Deep-well removable bridge plug
05/05/2010CN201448087U Rod parting blowout preventer
05/05/2010CN201448086U Retainer ring type seal assembly
05/05/2010CN201448085U Three-segment split hinge assembly of a shutter blowout preventer
05/05/2010CN201448084U Oil remover for pumping well polished rod
05/05/2010CN201448083U Self-locking annular sealing assembly
05/05/2010CN201448082U Multifunctional sealer for polished rod
05/05/2010CN201448081U Sealed sucker rod packing ring
05/05/2010CN101701513A Drilling-plug free tubular column with sand control and well cementation for open-hole horizontal well
05/05/2010CN101701512A DN80 21MPa thermal expansion compensator
05/04/2010US7708081 Wellbore system extending through a salt layer
05/04/2010US7708080 Packer
05/04/2010US7708079 Multi-lock adapters for independent screwed wellheads and methods of using same
05/04/2010US7708071 Cement compositions comprising aluminum chloride and associated methods
05/04/2010US7708070 Shaft plugging system
05/04/2010US7708062 Retrievable downhole packer assembly
05/04/2010US7708061 Cup tool, cup tool cup and method of using the cup tool
04/2010
04/29/2010WO2010048077A1 Shunt tube flowpaths extending through swellable packers
04/29/2010WO2010047600A2 Cement head with integrated energy supply for operating valves
04/29/2010WO2010046050A2 Apparatus and methods for improved cement plug placement
04/29/2010WO2010046021A1 Methods and apparatus for improved cement plug placement
04/29/2010WO2010046020A1 Apparatus and methods for through-casing remedial zonal isolation
04/29/2010WO2010046019A1 Apparatus and methods for improved cement plug placement
04/29/2010US20100102513 Seal assembly for a rotary earth bit
04/29/2010US20100101807 Downhole apparatus with packer cup and slip
04/29/2010US20100101806 Mandrel to be inserted into a liquid circulation pipe and associated positioning method
04/29/2010US20100101804 Resettable antiextrusion backup system and method
04/29/2010US20100101800 Subsea Completion with a Wellhead Annulus Access Adapter
04/29/2010US20100101792 Cement head
04/29/2010US20100101776 Improved sealing apparatus
04/29/2010US20100101775 Pressure driven apparatus for sequential control of a cementing head
04/29/2010CA2824402A1 Shunt tube flowpaths extending through swellable packers
04/29/2010CA2739423A1 Shunt tube flowpaths extending through swellable packers
04/28/2010EP2180137A1 Apparatus and methods for through-casing remedial zonal isolation
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