E21B 37 - Methods or apparatus for cleaning boreholes or wells

Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129)
12/2011
12/07/2011	CN202064896U 油井管柱投球验封捕球装置 Well string pitching experience catching the ball closure device
12/07/2011	CN102268979A 节能型无抽油机远程集油洗井输水灌溉装置 No set of energy-saving remote oil pumping irrigation water flushing device
12/06/2011	US8071511 Methods for stimulating oil or gas production using a viscosified aqueous fluid with a chelating agent to remove scale from wellbore tubulars or subsurface equipment
12/06/2011	CA2600493C Method for simultaneous removal of asphaltene, and/or paraffin and scale from producing oil wells
12/03/2011	CA2706765A1 Down-hole well-bore pigging and scale trap wire line
12/01/2011	WO2011149668A1 Wellbore debris cleanout assembly and method to remove debris from a debris catcher
11/2011
11/30/2011	CN202055806U 一种油井井下自动定量加药装置 One kind of oil underground automated quantitative dosing device
11/30/2011	CN202055805U 一体化旋流冲壁器 Chong wall is integrated cyclone
11/30/2011	CN202055804U 井口钻杆刮泥器 Wellhead drill scraper
11/24/2011	WO2011146251A1 Dual-pole magnetic attraction downhole magnetic retrieval apparatus
11/24/2011	WO2011145950A1 An arrangement, device and method for resolving hydrate plugs
11/24/2011	WO2010017899A3 Movable well bore cleaning device
11/23/2011	CN202047795U Underground solid anti-scale and anti-wax device
11/23/2011	CN202047794U Dosing device for protecting straight well
11/23/2011	CN202047793U Chemical feeding unit for deviated well protection
11/23/2011	CN202047792U Automatic water intaking constant flow heat preservation dropping liquid pot
11/23/2011	CN102251758A Wellhead drill rod sludge scraper
11/23/2011	CN102251757A Multifunctional well washing vehicle
11/23/2011	CN102250603A Separated injection oil well composite blocking remover and injection method thereof
11/23/2011	CN102250601A Composite blocking remover for oil well and application method thereof
11/23/2011	CN101524693B Design method of timed heating ball collecting device
11/22/2011	US8061426 System and method for lateral wellbore entry, debris removal, and wellbore cleaning
11/17/2011	US20110278012 Fracture clean-up by electro-osmosis
11/17/2011	US20110278004 Compositions and metods for cleaning a wellbore prior to cementing
11/16/2011	CN202039819U Pneumatic control system of dust collector
11/16/2011	CN202039818U Portable thorn washing device for operation equipment
11/16/2011	CN202039794U High efficiency cleaning drill rod for rock cuttings bed
11/16/2011	CN202037151U Scale removing device of out-transferring trunk line of oil field
11/16/2011	CN102242618A Well head crude oil cleaning device for well workover
11/15/2011	US8058211 Corrosion inhibitor intensifier compositions and associated methods
11/15/2011	US8056622 Slickline conveyed debris management system
11/15/2011	CA2671282C Controlling transient pressure conditions in a wellbore
11/10/2011	WO2011139837A2 Brush assembly with non-rotating stabilizer and brushes
11/10/2011	WO2011139831A2 Wellbore cleaning devices
11/10/2011	US20110272160 Cleaning agents for wellbore cleaning and methods of use thereof
11/10/2011	US20110272143 Sand production control through the use of magnetic forces
11/09/2011	EP1301576B1 Compositions for controlling scaling and completion fluids
11/09/2011	CN202031545U Novel wax scraper for oil pipe
11/09/2011	CN202031544U High-efficiency rotating tube scraper
11/09/2011	CN202031543U Paraffin preventer for ultrasonic oil well
11/09/2011	CN202031542U Bailing device for oil well
11/09/2011	CN202031541U Variable frequency electromagnetic electric-heating melting and cleaning device for oil tubes
11/09/2011	CN101424174B Sucker rod wax scraping device
11/09/2011	CN101387191B Immobile string cleaner for vertical pipeline and method
11/08/2011	CA2455854C Method of controlling asphaltene precipitation in a fluid
11/03/2011	US20110266000 Movable Well Bore Cleaning Device
11/03/2011	US20110265999 Reverse torque drive system
11/03/2011	US20110265988 Wellbore Cleaning Devices
11/02/2011	EP2054347B1 Treating liquids in oil extraction
11/02/2011	CN202023537U Impact type paraffin scraper for electric pump well
11/01/2011	CA2671374C Controlling transient pressure conditions in a wellbore
10/2011
10/27/2011	WO2011061239A3 Downhole circulation apparatus
10/27/2011	US20110259594 Maintenance Device, and Method for Introducing a Maintenance Tool into an Elongate Hollow Member
10/26/2011	CN102227542A Sub-sea chemical injection metering valve
10/25/2011	US8043996 Method for treatment of underground reservoirs
10/20/2011	WO2011130523A2 A tool for removing debris from a wellbore
10/20/2011	US20110253376 Tool for removing debris from a wellbore
10/19/2011	CN202012337U Oil wellhead chemical agent adding device
10/19/2011	CN101120155B Integrated magnetic ranging tool
10/13/2011	WO2011126667A1 Systems and methods for logging cased wellbores
10/11/2011	US8033334 Treating liquids in oil extraction
10/06/2011	US20110240302 Systems and methods for logging cased wellbores
10/06/2011	US20110240131 System and method for scale inhibition
10/05/2011	EP2370666A1 Sub-sea chemical injection metering valve
10/05/2011	CN202000967U Multipurpose combined rod on well repair site
10/05/2011	CN202000966U Wax removal shuttle
10/05/2011	CN202000965U Portable high-pressure hot wash monitor
10/05/2011	CN202000914U Cylinder type operating platform for sucker rod
09/2011
09/29/2011	US20110232918 Method and apparatus to remove shifting balls from frac sleeves in oil and gas wells
09/29/2011	US20110232911 Method and device for cleaning a cavity in a petroleum well
09/29/2011	US20110232910 Particle-loaded wash for well cleanup
09/28/2011	EP2367985A2 Device and method for activating or purifying wells with filter tubes
09/28/2011	CN201991508U 一种重力式油井井下连续加药设备 A gravity-type oil underground continuous dosing equipment
09/28/2011	CN201991492U 油井管杆防腐阻垢长效装置 Long-term corrosion inhibitor OCTG lever device
09/28/2011	CN201991491U 油管在线带压除垢装置 Tubing pressure cleaning device online with
09/28/2011	CN201991490U 一种新型油管刺洗装置 A new pipeline cleaning device thorn
09/28/2011	CN201991489U 一种新型电磁防蜡器 Wax is a new type of electromagnetic
09/28/2011	CN201991488U 一种可拆装式油井磁防蜡降粘器 One kind may be removable magnetic paraffin oil viscosity reduction device
09/28/2011	CN102200003A Pumping rod oil-increasing rotary wax scraping centralizer
09/22/2011	WO2011113086A1 A jetting tool for well cleaning
09/22/2011	CA2792286A1 A jetting tool for well cleaning
09/21/2011	EP2366867A2 Apparatus for cleaning boreholes within substrates
09/21/2011	CN201982063U 一种油井电磁防蜡装置 One kind of paraffin oil electromagnetic device
09/20/2011	US8022014 Deep eutectic solvents and applications
09/20/2011	US8020615 Truck-mounted pumping system for treating a subterranean formation via a well with a mixture of liquids
09/20/2011	CA2638503C Naphthenic acid solids dissolver compositions and methods related thereto
09/15/2011	WO2011113032A2 Method and apparatus for washing dowhole tubulars and equipment
09/14/2011	EP2364395A1 Method and device for cleaning a cavity in a petroleum well
09/14/2011	CN201972666U 封闭式油管直燃加热浸泡式清洗装置 Closed pipe direct-fired heating immersion cleaning device
09/14/2011	CN201972665U 高效节能型油田用油井清蜡车 Energy-efficient oilfield wells wax car
09/14/2011	CN102182425A Suspended movable drill rod mud scraping device
09/09/2011	WO2011107082A1 Device and method for producing high-pressure pulses
09/08/2011	US20110214874 Non-aqueous breaker fluids and methods of use thereof
09/08/2011	US20110214873 Expandable mill and methods of use
09/08/2011	US20110214872 Method and apparatus for removal of pigs, deposits and other debris from pipelines and wellbores
09/07/2011	EP1720954B1 Method of flocculating suspended particles
09/07/2011	CN201963261U 气动式油管刮油器 Pneumatic tubing scraping oil
09/07/2011	CN201963260U 一种起下抽油杆用刮油防喷装置 One kind of scraping oil from under the rod blowout preventer
09/07/2011	CN201963259U 一种套管清蜡器 Wax is one kind of casing
09/07/2011	CN201963230U 注水井管端总成 Injection Wells tube end assembly

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