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 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Patents for E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780)
11/2010
11/09/2010US7828081 Method of drilling a lossy formation
11/09/2010CA2473073C Vessel for well intervention
11/09/2010CA2445227C Method of recycling water contaminated oil based drilling fluid
11/05/2010CA2702599A1 A surface pump assembly having a thrust chamber with a telescoping shaft
11/04/2010WO2010124371A1 Selective fracturing tool
11/04/2010WO2009129442A3 Method for recovery of hydrocarbons from a subsurface hydrocarbon containing formation
11/04/2010DE102008056262B4 Vorrichtung und Verfahren zum Absaugen von Bohrgut und Bohrschlamm Apparatus and method for sucking cuttings and drilling mud
11/04/2010CA2784569A1 Selective fracturing tool
11/04/2010CA2731161A1 Selective fracturing tool
11/03/2010CN201620783U Slip-type underground foaming device
11/03/2010CN201620782U Novel pressure test device
11/03/2010CN201620781U Drilling fluid shunt control manifold of a continuous circulation drilling system
11/03/2010CN201620755U Direct and reverse circulation drilling machine
11/03/2010CN101099025B Dust suction method relating to drilling arrangement and drilling arrangement
11/02/2010US7825071 wellbore fluid that includes oleaginous continuous phase (diesel oil, mineral oil, synthetic oil), non-oleaginous phase (fresh water, sea water, brines), and modified polyesteramide surfactant, crosslinked by epoxidized oil, forming invert emulsion; for drilling subterranean formations
11/02/2010US7823662 Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods
11/02/2010US7823660 Apparatus and methods for drilling a wellbore using casing
11/02/2010US7823656 Method for monitoring drilling mud properties
11/02/2010US7823607 System tank and output unit for transporting untreated drill cuttings
11/02/2010CA2489674C Ported velocity tube for gas lift operations
10/2010
10/30/2010CA2702556A1 Apparatus and method for mobile coal sampling
10/28/2010WO2010121399A1 Method and device for treating waste mud
10/28/2010WO2010086590A3 Centrifugal mixing system
10/27/2010CN201614902U 压裂后旋转冲砂头 Rotary die head after fracturing sand
10/27/2010CN201614885U 新型钻机传动装置 New rig gear
10/27/2010CN101871330A Foam cyclic utilization method by utilizing low carbon alcohol to realize foam drilling
10/27/2010CN101871329A Drilling fluid PLC automatic control system and control method thereof
10/27/2010CN101871317A Anchor rod drilling machine
10/26/2010US7819205 Apparatus for the cooling of drilling liquids
10/26/2010US7819197 Wellbore collection system
10/26/2010CA2603744C Water based completion and displacement fluid and method of use
10/26/2010CA2468859C Method and device for injecting a fluid into a formation
10/26/2010CA2455698C System for controlling the operating pressures within a subterranean borehole
10/21/2010WO2010120466A2 Slickline conveyed bottom hole assembly with tractor
10/21/2010WO2010120463A1 Slickline conveyed shifting tool system
10/21/2010WO2010120455A1 Slickline conveyed tubular cutter system
10/21/2010WO2010120454A1 Slickline conveyed debris management system
10/21/2010WO2010095949A3 Device for passive pressure sealing
10/21/2010CA2758788A1 Slickline conveyed bottom hole assembly with tractor
10/21/2010CA2758583A1 Slickline conveyed shifting tool system
10/21/2010CA2758495A1 Slickline conveyed debris management system
10/21/2010CA2758443A1 Slickline conveyed tubular cutter system
10/20/2010EP2241752A2 Pumping system
10/19/2010CA2538264C Internal blow out preventer ball and seat
10/14/2010WO2010115834A2 Apparatus for and method of drilling a subterranean borehole
10/14/2010WO2010080867A3 Oilfield reclamation system
10/14/2010US20100258486 Apparatus for prevention of mud hardening in drain holding tank
10/14/2010US20100258353 Apparatus for use in Drilling
10/14/2010US20100258307 Drilling composition, process for its preparation, and applications thereof
10/14/2010US20100258303 Annulus mud flow rate measurement while drilling and use thereof to detect well dysfunction
10/14/2010CA2757403A1 Apparatus for and method of drilling a subterranean borehole
10/14/2010CA2698147A1 Hydrocyclones for treating drilling fluid
10/13/2010CN201606082U 新型管棚钻机 The new pipe roof rig
10/13/2010CN201606020U 直线和平动椭圆双轨迹振动型钻井液振动筛 Linear peace elliptical vibration type double track shale shaker
10/13/2010CN201606008U 一种防突钻机专用灭尘装置 A sudden rig special anti-dust suppression device
10/13/2010CN201605577U 机械成孔灌注桩的清孔装置 Chiang Khong mechanically into the hole Pile
10/13/2010CN101858334A Drilling pump
10/12/2010US7813935 System for evaluating over and underbalanced drilling operations
10/12/2010US7810585 Bi-directional rotary steerable system actuator assembly and method
10/12/2010US7810573 Method for retrofitting a downhole drill string with a flow through subassembly and method for making same
10/07/2010WO2010114741A2 Adjustable flow control devices for use in hydrocarbon production
10/07/2010WO2010112933A2 Drill pipe connector
10/07/2010WO2010112823A1 Methods and systems for slurry blending
10/07/2010US20100252272 Apparatus and method to maintain constant fluid circulation during drilling
10/07/2010CA2757565A1 Drill pipe connector
10/07/2010CA2757179A1 Apparatus and method for oilfield material delivery
10/06/2010EP2235318A1 Method for detecting formation pressure
10/06/2010CN201598998U 无杆泵洗井阀 Rodless pump flushing valve
10/06/2010CN201598997U 海洋模块钻机泥浆罐专用泄放阀 Marine module dedicated rig mud tank relief valve
10/06/2010CN201598996U 一种节流装置 One kind of throttling device
10/06/2010CN201598979U 一种挖掘机型式液压平动钻机 One kind of type hydraulic excavator translational rig
10/06/2010CN101852076A Underground working condition simulation method for controlled pressure drilling experiment and test
10/06/2010CN101852070A Pressure balancing inclined plane locking-type gradually deblocking packer
10/06/2010CN101851919A Extra-deep hole drilling and fast slag tapping construction method
10/05/2010US7806202 System and method for reservoir characterization using underbalanced drilling data
10/05/2010US7806182 Stimulation method
09/2010
09/30/2010WO2010069992A3 Riser valve
09/30/2010WO2010044027A3 Downhole application for a backpressure valve
09/30/2010US20100243329 Vacuum feed supply system for drilling fluid additives
09/30/2010DE102009014119A1 Emulsionsbasierte Reinigungszusammensetzung für Ölfeldanwendungen Emulsion-based cleaning composition for oil field applications
09/29/2010EP2233184A1 Apparatus and Method for Separating Solids from a Solids Laden Fluid
09/29/2010EP2232004A2 A collecting device and a method of using same
09/29/2010EP2232003A2 Breaker fluids and methods of using the same
09/29/2010EP2232001A2 Method and apparatus for facilitating continuous circulation of drilling mud during construction and maintenance of a well
09/29/2010CN201593387U Drilling annulus pressure precise control system
09/29/2010CN1930369B Expander for expanding a tubular element
09/29/2010CN101849080A Method of using pressure signatures to predict injection well anomalies
09/29/2010CN101018925B Top drive
09/28/2010US7802639 Drive device for a boring bar
09/28/2010US7802635 Dual stripper rubber cartridge with leak detection
09/28/2010CA2615556C Method and apparatus to optimize the mixing process
09/23/2010WO2010106124A2 Method and device for drilling shafts in ground layers consisting of rock, clay and/or related materials
09/23/2010US20100236833 Displaceable Plug in a Tool String Filter
09/23/2010US20100236791 Device And Method For Maintaining Constant Pressure On, And Flow Drill Fluid, In A Drill String
09/23/2010CA2755764A1 Method and device for drilling shafts in ground layers consisting of rock, clay and/or related materials
09/22/2010EP2230377A1 Underwater cementing method
09/22/2010EP2229502A2 Dewatering of silicate wellbore fluids
09/22/2010EP1676066B1 Internal blow out preventer ball and seat
09/22/2010CN201588573U Active sealing device of discharge port of shunt
09/22/2010CN201588572U No-clean drilling fluid water loss instrument
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