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 34 - Valve arrangements for boreholes or wells
Patents for E21B 34 - Valve arrangements for boreholes or wells (14,685)
03/2012
03/22/2012CA2811309A1 Method and apparatus for precise control of wellbore fluid flow
03/21/2012EP2191099B1 Downhole valve for preventing zonal cross-flow
03/21/2012CN202170782U 加重球防砂器 Sand is heavier ball
03/21/2012CN202170780U 环保型单流阀 Environmentally friendly single-stream valve
03/21/2012CN202170779U 新型防喷开关泄油器 The new blowout preventer switch bleeder
03/21/2012CN102383775A Double-cock ball throwing device and ball throwing method
03/21/2012CN102383770A Light oil mixing and water injection treatment multifunctional device for super heavy oil recovery
03/21/2012CN102383761A Underground flow control valve based on fiber bragg grating sensing detection
03/21/2012CN102383760A Design method of sliding sleeve switch
03/20/2012CA2441368C Alternate path multilateral production/injection
03/15/2012WO2012033638A2 Series configured variable flow restrictors for use in a subtrerranean well
03/15/2012WO2011101344A3 A valve device for a side pocket or a sub in a well
03/15/2012US20120061103 Multiple ball- ball seat for hydraulic fracturing with reduced pumping pressure
03/15/2012US20120061095 Apparatus and Method For Remote Actuation of A Downhole Assembly
03/15/2012US20120061094 Ball-seat apparatus and method
03/15/2012US20120061093 Multiple in-flow control devices and methods for using same
03/15/2012US20120061088 Self-releasing plug for use in a subterranean well
03/15/2012US20120061087 Continuous flow drilling systems and methods
03/15/2012CA2809423A1 Series configured variable flow restrictors for use in a subterranean weell
03/14/2012EP2428639A2 Arrangement of isolation sleeve and cluster sleeves having pressure chambers
03/14/2012EP2427630A1 Sliding sleeve sub and method and apparatus for wellbore fluid treatment
03/14/2012CN202165067U 空气泡沫驱井底发泡工艺管柱 Air foam flooding downhole string foaming process
03/14/2012CN202165053U 一种新型的液压控制井下滑套开关阀 A novel hydraulic pressure control downhole valve sleeve switch
03/14/2012CN202165052U 钻具旁通阀 Drill bypass valve
03/14/2012CN202165051U 单流可泄油式自洁沉砂装置 Single stream can drain device self-cleaning grit
03/14/2012CN202165050U 一种液动井口安全阀用泄放阀 One kind of wellhead safety valves with hydraulic relief valve
03/14/2012CN202165043U 防喷安全阀及专用放压工具 BOP pressure release valve and special tools
03/14/2012CN202165038U 一种用于井下安全阀故障处理的工具 A downhole safety valve troubleshooting tools for
03/14/2012CN102373901A Unblocking controller for oil-water well
03/14/2012CN102373900A Staged fracturing well completion method using hydraulic-controlled switch to open/close controllable valves
03/14/2012CN102373899A Opening/closing valve for natural gas well mouth pipeline
03/14/2012CN102373895A Well head device
03/13/2012CA2646549C Casing shoes and methods of reverse-circulation cementing of casing
03/13/2012CA2636887C Tubing retrievable safety valve and method
03/08/2012WO2012031276A1 Cap valve
03/08/2012WO2012030843A2 Methods for completing multi-zone production wells using sliding sleeve valve assembly
03/08/2012WO2011147031A4 Downhole gas release apparatus
03/08/2012WO2011059756A8 Hydraulic control system monitoring apparatus and method
03/08/2012US20120055684 Arrangement of Isolation Sleeve and Cluster Sleeves Having Pressure Chambers
03/08/2012US20120055681 Downhole valve tool and method of use
03/08/2012US20120055680 Blow-out preventer, and oil spill recovery management system
03/08/2012CA2808635A1 Methods for completing multi-zone production wells using sliding sleeve valve assembly
03/08/2012CA2751191A1 Arrangement of isolation sleeve and cluster sleeves having pressure chambers
03/08/2012CA2714318A1 Control logic method and system for optimizing natural gas production
03/07/2012EP2425094A2 Valve system for drilling systems
03/07/2012CN202157803U 井口取样阀门 Wellhead sampling valve
03/07/2012CN202157792U 油井用井下配产器 Well equipped with underground production unit
03/07/2012CN202157790U 不压井作业抽油装置 Snubbing Oil Rig
03/07/2012CN202157784U 井下单流阀 Downhole single valve
03/07/2012CN202157783U 沉砂式底球 Grit Bottom Ball
03/07/2012CN102369337A Adjustable flow control devices for use in hydrocarbon production
03/07/2012CN101575958B Electromagnetic pneumatic switch well valve of natural gas well
03/06/2012US8127868 Apparatus and methods for drilling a wellbore using casing
03/06/2012US8127834 Modular electro-hydraulic controller for well tool
03/06/2012CA2675675C Gas lift valve assembly
03/01/2012WO2012027157A1 Variable flow restrictor for use in a subterranean well
03/01/2012WO2012027135A2 Tool with multisize ball seat having segmented arcuate ball support member
03/01/2012WO2012024773A1 Apparatus and method for fracturing a well
03/01/2012WO2011153621A9 Rotating flow control diverter
03/01/2012WO2011102732A3 Valve system
03/01/2012US20120048571 Remotely-Controlled Downhole Device and Method for Using Same
03/01/2012US20120048570 Real time downhole intervention during wellbore stimulation operations
03/01/2012US20120048566 Subsea Well Safing System
03/01/2012US20120048565 Torque tripping mechanism for a valve
03/01/2012US20120048564 Pump through circulating and or safety circulating valve
03/01/2012US20120048563 Variable flow restrictor for use in a subterranean well
03/01/2012US20120048562 Self-Orienting Crossover Tool
03/01/2012US20120048561 Downhole adjustable inflow control device for use in a subterranean well
03/01/2012US20120048556 Plug counter, fracing system and method
03/01/2012CA2872198A1 Plug counter, fracing system and method
03/01/2012CA2809205A1 Apparatus and method for fracturing a well
03/01/2012CA2808080A1 Variable flow restrictor for use in a subterranean well
02/2012
02/29/2012EP2423431A2 Self-orienting croosover tool
02/29/2012EP2422045A2 Processes and systems for treating oil and gas wells
02/29/2012EP2422044A2 New and improved fracture valve and related methods
02/29/2012EP2422043A2 New and improved actuators and related methods
02/29/2012EP2422042A2 New and improved blapper valve tools and related methods
02/29/2012CN202152680U 双向密封式井口取样阀门 Bidirectional sealed wellhead sampling valve
02/29/2012CN202152674U 用于水平井分段压裂酸化的可钻式投球滑套 Staged fracturing for horizontal wells can be drilled formula acidified pitching sleeve
02/29/2012CN202152664U 自调压油井放气阀 Self-regulating oil discharge valve
02/29/2012CN202152659U 井口防盗封井器 Wellhead blowout preventer theft
02/29/2012CN202152654U 自动平衡压力胀捞一体化膨胀管工具 Automatic balancing pressure expansion pipe expansion fishing tool integration
02/29/2012CA2751179A1 Rotating flow control diverter with riser pipe adapter
02/28/2012US8122963 Monitoring a solenoid of a directional control valve
02/28/2012US8122948 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
02/25/2012CA2747277A1 Self-orienting crossover tool
02/23/2012US20120043093 Apparatus and method
02/23/2012US20120043092 Blapper valve tools and related methods
02/23/2012US20120043088 Method and apparatus for separating downhole hydrocarbons from water
02/22/2012EP2419600A1 Systems and methods for providing zonal isolation in wells
02/22/2012EP2419599A2 Sealing arrangement for a down hole valve
02/22/2012CN202148881U 箭型止回阀 Arrow-type check valve
02/22/2012CN202148880U 一种高抗硫井控设备 A high-sulfur resistant Well Control Equipment
02/22/2012CN102359355A Concentric-tube double-tube steam injection wellhead device
02/22/2012CN102359349A Metallic seal test tubing head
02/21/2012US8118105 Modular electro-hydraulic controller for well tool
02/21/2012US8118104 Downhole valve with pass through ID
02/21/2012US8118101 Ball catcher with retention capability
02/21/2012US8118100 Debris protection for sliding sleeve
02/21/2012US8118098 Flow control system and method for use in a wellbore
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