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)
04/2010
04/22/2010CA2741318A1 Downhole application for a backpressure valve
04/22/2010CA2740688A1 Mud pump modules with surge dampeners
04/22/2010CA2740047A1 Treatment of recovered wellbore fluids
04/21/2010EP2176509A1 Apparatus and method to maintain constant fluid circulation during drilling
04/21/2010CN201439691U Pressure testing device for workover treatment
04/21/2010CN101696627A Accident monitoring method in welldrilling process
04/20/2010US7702423 Method and apparatus to control the rate of flow of a fluid through a conduit
04/20/2010US7699107 Mechanical and fluid jet drilling method and apparatus
04/20/2010CA2610155C Casing and drill pipe filling and circulation apparatus
04/20/2010CA2459733C Assembly for drilling low pressure formation
04/15/2010WO2010041087A1 Method and apparatus for separating solids from solids laden drilling fluid
04/15/2010WO2010040223A1 Shale hydration inhibition agents for utilization in water-based drilling fluids
04/15/2010WO2010018399A3 Apparatus and method for facilitating separation of hydrocarbons from hydrocarbon laden drill cuttings produced in the drilling of wellbores
04/15/2010WO2009101424A4 Flow stop valve
04/15/2010US20100089655 Rotating control device with replaceable bowl sleeve
04/15/2010US20100089654 Rotating control device having bearing assembly housing with replaceable wear sleeve
04/15/2010US20100089652 Shale Shakers with Selective Series/Parallel Flow Path Conversion
04/15/2010US20100089651 Drilling fluid screening systems and methods
04/15/2010US20100089650 Drilling fluid and method for drilling in coal-containing formations
04/15/2010US20100089644 Drilling tool and drilling method
04/15/2010CA2777072A1 Shale hydration inhibition agents for utilization in water-based drilling fluids
04/15/2010CA2737406A1 Method and apparatus for separating solids from solids laden drilling fluid
04/13/2010US7694753 Dual rod drill pipe with improved flow path method and apparatus
04/13/2010US7694730 Spear type blow out preventer
04/13/2010US7694558 Downhole washout detection system and method
04/13/2010CA2511249C Method for drilling a lateral wellbore with secondary fluid injection
04/08/2010WO2010039042A2 Down hole valve device
04/08/2010WO2010037185A1 Drilling fluid treatment
04/08/2010US20100084190 Rig storage system
04/08/2010US20100084142 Equipment for intercepting and diverting a liquid circulation flow
04/07/2010EP2172533A1 Composition for borehole treatment
04/07/2010EP2171207A1 Device and method for maintaining constant pressure on, and flow drill fluid, in a drill string
04/06/2010US7690445 Pretreating substrate with an organic emulsion breaker( dodecylbenzenesulfonic acid or salt); heating pretreated substrate with steam, air or nitrogen a heat transfer medium to vaporize the oil; recovering vaporized oil; recovering a treated substrate of reduced oil content
04/06/2010US7690422 Drill-string connector
04/06/2010CA2604701C Method for servicing a well bore using a mixing control system
04/06/2010CA2498694C Downhole ball dropping apparatus
04/01/2010WO2010034889A1 Equipment for controlling amount of water used for binding dust
04/01/2010WO2010034379A1 Composition for borehole treatment
04/01/2010US20100078164 Permanent downhole deployment of optical sensors
04/01/2010CA2739196A1 Equipment for controlling amount of water used for binding dust
03/2010
03/31/2010EP2167789A2 Method and apparatus for geobaric analysis
03/31/2010CN201433730Y Dedusting device for gas drilling
03/31/2010CN201433729Y combined drilling fluid/gas separator
03/31/2010CN201431964Y Inclination angle adjustment device for drilling fluid vibration screen bed
03/30/2010CA2552828C Down hole fluid heating apparatus and method
03/30/2010CA2469711C Wellbore fluid recovery system & method
03/30/2010CA2378952C Latex additive for water-based drilling fluids
03/30/2010CA2352103C Method and system for extracting, analysing and measuring constituents transported by a bore fluid
03/25/2010WO2010031804A2 Polymer gels as flow improvers in water injection systems
03/25/2010WO2010031132A1 An injection, sealing valving and passageway system
03/25/2010US20100071957 Drill-In Fluids For Oil and Gas Reservoirs With High Carbonate Contents
03/25/2010CA2737726A1 An injection, sealing, valving and passageway system
03/25/2010CA2737377A1 Polymer gels as flow improvers in water injection systems
03/24/2010EP2165951A1 Method for conveying drill cuttings
03/24/2010CN201428402Y Open-type hole jet device
03/23/2010CA2581136C Gas separator
03/23/2010CA2514592C Delayed phase changing agent for invert emulsion drilling fluid
03/23/2010CA2465176C Remedial system to flush contaminants from tubing string
03/23/2010CA2356332C Fluids and techniques for hydrocarbon well completion
03/18/2010WO2010031052A2 Method of determining borehole conditions from distributed measurement data
03/18/2010WO2010030644A2 System and method for de-watering waste drilling fluids
03/18/2010WO2010030275A1 Nitrogen-free invert emulsion wellbore fluid
03/18/2010WO2010030274A2 Invert emulsion wellbore fluids and method for reducing toxicity thereof
03/18/2010WO2010029216A1 Method for handling drill cuttings, dust collection system for rock drilling rig, and changer unit
03/18/2010WO2010029091A1 A method of cleaning oil contaminated solid particulates
03/18/2010WO2010008653A3 Apparatus for cleaning boreholes within substrates
03/18/2010WO2009139825A3 An arrangement and a method for monitoring an air flow in a drill rig
03/18/2010CA2736730A1 Nitrogen-free invert emulsion wellbore fluid
03/18/2010CA2736728A1 Invert emulsion wellbore fluids and method for reducing toxicity thereof
03/18/2010CA2733329A1 System and method for de-watering waste drilling fluids
03/17/2010CN101675139A Drilling fluid and method for drilling in coal-containing formations
03/17/2010CN101672169A Treatment method of wax-emulsion drilling fluid
03/17/2010CN101672157A Well-digging and hole-drilling device of oil-field underground pneumatic-hydraulic motor and application thereof
03/16/2010US7678281 Mixing the brine containing metal impurities with an organic chelant for a time sufficient for the chelant to complex a metal and form a complexed metal precipitate; removing complexed metal precipitate from brine wherein the metal impurities contain iron
03/16/2010US7678280 Method for recycling of oil based drilling fluid contaminated with water and water contaminated with oil based drilling fluid
03/16/2010US7677332 Method and apparatus for managing variable density drilling mud
03/16/2010US7677329 Method and device for controlling drilling fluid pressure
03/16/2010US7677307 Apparatus and methods to remove impurities at a sensor in a downhole tool
03/16/2010CA2448419C Instrumentation for a downhole deployment valve
03/11/2010WO2009136153A3 Methods of providing a lower-quality water for use as some of the water in the forming and delivering of a treatment fluid into a wellbore
03/11/2010WO2009136151A3 Methods of pumping fluids having different concentrations of particulate to reduce pump wear and maintenance in the forming and delivering of a treatment fluid into a wellbore
03/11/2010US20100059282 Boring head with new protection hood
03/11/2010US20100059220 Apparatus for use when gathering parameters from a well flow and also a method of using same
03/10/2010EP2161404A2 Underbalanced well drilling and production
03/10/2010EP2160375A1 In-line treatment of hydrocarbon fluids with ozone
03/10/2010CN201420516Y Filtering device for hydraulic control system of ground blowout preventer control device
03/10/2010CN101666216A Method and device for closed circulation use of under-balanced drilling foams
03/09/2010US7674384 Mixing the brine containing metal impurities with an organic chelant for a time sufficient for the chelant to complex a metal and form a complexed metal precipitate; removing complexed metal precipitate from brine wherein the metal impurities contain iron
03/04/2010WO2010023576A1 Treatment and reuse of oilfield produced water for operations in a well
03/04/2010WO2010005902A3 Method to detect formation pore pressure from resistivity measurements ahead of the bit during drilling of a well
03/04/2010WO2009148375A8 Arrangement and method comprising a flushing head for a rock drilling machine, and rock drilling machine comprising the arrangement
03/04/2010US20100051290 Pressure Actuated Piston Type Casing Fill-up Valve and Methods of Use Thereof
03/04/2010US20100051282 Hydraulic Pump System for Deliquifying Low Rate Gas Wells
03/04/2010CA2735410A1 Treatment and reuse of oilfield produced water for operations in a well
03/03/2010CN201416400Y DC drill rod filter
03/03/2010CN201416399Y Oil well immovable pipe column reversed well-flushing device
03/02/2010US7670993 Contacting an emulsion of water, detergent, hydrocarbon solvent and acid with the interior of the oil well; one-step cleaning
03/02/2010CA2577774C Casing shoes and methods of reverse-circulation cementing of casing
03/02/2010CA2311254C A circulating sub apparatus and method
02/2010
02/25/2010WO2010021786A1 Fluid injection completion techniques
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