E21B 33 - Sealing or packing boreholes or wells

Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
10/2011
10/26/2011	CN102226377A Drill string equipped with downhole blowout preventer and working method thereof
10/26/2011	CN102226375A Method for forming easy-to-collapse drilled hole
10/25/2011	US8042618 Methods for swelling swellable elements in a portion of a well using an oil-in-water emulsion
10/25/2011	US8042616 Apparatus and methods for drilling a wellbore using casing
10/25/2011	US8042615 Blow out protector valve employing ball baffle assembly for use with high-pressure fluids
10/25/2011	CA2638630C Dual zone flow choke for downhole motors
10/20/2011	WO2011130018A1 Sequenced packing element system
10/20/2011	WO2011128690A1 Blowout preventer assembly
10/20/2011	WO2011128653A1 Testing subsea umbilicals
10/20/2011	WO2011128613A2 Subsea wellhead with segmented fatigue reduction sleeve
10/20/2011	WO2011128611A2 Subsea wellhead providing controlled access to a casing annulus
10/20/2011	WO2011128172A1 Methods for treating fibers
10/20/2011	WO2011094274A3 Collet system
10/20/2011	WO2011077337A3 Chemical diversion technique
10/20/2011	US20110254227 Seal
10/20/2011	US20110253394 Modifying expansion forces by adding compression
10/20/2011	US20110253393 Swellable downhole device of substantially constant profile
10/20/2011	US20110253391 Sand Control Screen Assembly Having Remotely Disabled Reverse Flow Control Capability
10/20/2011	US20110253384 Multi-lock adapters for independent screwed wellheads and methods of using same
10/20/2011	US20110253381 Subsea wellhead with segmented fatigue reduction sleeve
10/20/2011	US20110253380 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
10/20/2011	US20110253378 Subsea wellhead providing controlled access to a casing annulus
10/20/2011	CA2795212A1 Blowout preventer assembly
10/20/2011	CA2794033A1 Methods for treating fibers
10/19/2011	EP2378056A2 Drilling fluid pressure control system for a floating rig
10/19/2011	EP2376742A1 Bop packing units selectively treated with electron beam radiation and related methods
10/19/2011	EP2376741A2 Hydraulic coupling
10/19/2011	EP2376740A1 Wellhead downhole line communication arrangement
10/19/2011	EP2376591A1 Methods and compositions for stabilizing unconsolidated particulates in a subterranean formation
10/19/2011	EP1692368B1 Compressible darts and methods for using these darts in subterranean wells
10/19/2011	CN202012328U High efficient cement slurry mixing device
10/19/2011	CN202012327U Excessive capillary test packer
10/19/2011	CN202012326U 动密封盘根 Dynamic seal packing
10/19/2011	CN202012325U Connecting short section for device operating under pressure
10/19/2011	CN202012324U Module structure of gas injection and gas extraction for gas storage wellhead
10/19/2011	CN202012323U Measurement test device for cluster gas well
10/19/2011	CN102220856A Balancing oil extractor
10/18/2011	US8037942 Resettable antiextrusion backup system and method
10/18/2011	US8037941 Dual packer for a horizontal well
10/18/2011	CA2664001C Packer or plug using a pack of fibres
10/18/2011	CA2662467C Well cementing using a sleeve shifter actuated valve
10/18/2011	CA2654783C Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation
10/18/2011	CA2645938C Methods and compositions for reducing fluid loss during treatment with viscoelastic surfactant gels
10/18/2011	CA2537816C Device and method of lining a wellbore
10/18/2011	CA2493210C Method and apparatus to selectively reduce wellbore pressure during pumping operations
10/13/2011	WO2011127422A2 System and method for subsea power distribution network
10/13/2011	WO2011127411A2 Fluid displacement methods and apparatus for hydrocarbons in subsea production tubing
10/13/2011	WO2011126592A2 Tubing hanger running tool with integrated pressure release valve
10/13/2011	WO2011126591A2 Tubing hanger running tool with integrated landing features
10/13/2011	WO2011084220A3 Control swelling of swellable packer by pre-straining the swellable packer element
10/13/2011	WO2011067353A3 Assembly and method for subsea well drilling and intervention
10/13/2011	US20110247835 Sequenced packing element system
10/13/2011	US20110247834 Multiple activation-device launcher for a cementing head
10/13/2011	US20110247833 High strength dissolvable structures for use in a subterranean well
10/13/2011	US20110247832 Expandable slip ring for use with liner hangers and liner top packers
10/13/2011	US20110247814 Forming bitumen barriers in subsurface hydrocarbon formations
10/13/2011	US20110247798 Tubing hanger running tool with integrated pressure release valve
10/12/2011	EP2374990A2 Bridging hanger and seal running tool
10/12/2011	EP2374860A1 Methods for treating fibers
10/12/2011	EP2373869A2 An improved seal
10/12/2011	CN202007690U Water amount controller with drilling holes for prospecting and draining water
10/12/2011	CN202007649U Drilling water-saving slurry tank
10/12/2011	CN202007648U Extension-expansion rubber cylinder for sliding sleeve fracturing packer
10/12/2011	CN202007647U Compression type packer for fracture of open hole completion
10/12/2011	CN202007646U Profile control sealer
10/12/2011	CN202007645U Manual locking device for hydraulic control blowout preventer
10/12/2011	CN202007644U Semi-closed ram structure of ram blowout preventer
10/12/2011	CN202007643U Sealing slip integrated hydraulic wedge disc blowout preventer
10/12/2011	CN202007642U Wellhead sealing device for oil pumping unit
10/12/2011	CN102216557A Systems and methods for mitigating annular pressure buildup in an oil or gas well
10/12/2011	CN102213089A Method and system for extracting oil from shallow heavy oil reservoir
10/12/2011	CN102213082A Capsule type cable control head
10/12/2011	CN102213081A Spindle type metal sealing and metal framework type rubber sealing sleeve hanger
10/12/2011	CN101586469B Hole sealing method for deep hole advanced loose blasting
10/11/2011	US8033337 Plugging a mined-through well
10/11/2011	US8033336 Undersea well product transport
10/11/2011	US8033331 Cement diffuser for annulus cementing
10/11/2011	CA2649771C Apparatus and method for severing a wellbore tubular
10/11/2011	CA2635993C Plunger lubricator housing
10/11/2011	CA2586346C Low density, high yield cement slurry formulation and method of using the same
10/11/2011	CA2506508C Liquified material squeezing method and apparatus for oil and gas wells
10/11/2011	CA2436378C Cement composition exhibiting improved resilience/toughness and method for using same
10/11/2011	CA2367810C Technique of forming expandable devices from cells that may be transitioned between a contracted state and an expanded state
10/06/2011	WO2011122957A1 Device for a plug construction for conducting well tests
10/06/2011	WO2011121277A2 Convertible downhole isolation plug
10/06/2011	WO2011097091A3 Drillable bridge plug for high pressure and high temperature environments
10/06/2011	WO2011094115A3 An openable port and method
10/06/2011	WO2011079264A3 High expansion metallic seal
10/06/2011	WO2011079169A3 Hydraulic deployment of a well isolation mechanism
10/06/2011	WO2011027149A3 Sealing apparatus and method
10/06/2011	US20110240316 Apparatus And Method For Launching Plugs In Cementing Operations
10/06/2011	US20110240315 Segmented Ball Seat Assembly Valve
10/06/2011	US20110240295 Convertible downhole isolation plug
10/06/2011	US20110240285 Downhole tool unit
10/06/2011	US20110240284 Tubular Embedded Nozzle Assembly for Controlling the Flow Rate of Fluids Downhole
10/06/2011	CA2792475A1 Device for a plug construction for conducting well tests
10/06/2011	CA2792013A1 Convertible downhole isolation plug
10/05/2011	EP2372079A2 Choke assembly
10/05/2011	EP2372078A2 Choke assembly
10/05/2011	EP2372077A2 Choke assembly

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