| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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| 03/27/2012 | US8141627 Expandable mill and methods of use |
| 03/27/2012 | CA2653496C Apparatus and methods of cleaning and refinishing tubulars |
| 03/27/2012 | CA2640109C Methods of treating subterranean formations with heteropolysaccharides based fluids |
| 03/22/2012 | WO2012036854A2 Debris chamber with helical flow path for enhanced subterranean debris removal |
| 03/22/2012 | US20120067588 Flow Control Apparatus |
| 03/21/2012 | CN202170781U 便携式地面管线节能加药装置 Portable ground line of energy-saving devices and drugs |
| 03/21/2012 | CN102383763A Bio-enzyme unblocking process for stratum blocking without inorganic scale |
| 03/20/2012 | US8136587 Slickline conveyed tubular scraper system |
| 03/14/2012 | CN202165054U 颗粒或干粉状固体连续加料装置 Dry powdered solid particles or continuous charging device |
| 03/14/2012 | CN102373902A Novel jet flow well flushing device |
| 03/14/2012 | CN102373036A Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells |
| 03/08/2012 | WO2012031185A1 System and method for casing milling |
| 03/07/2012 | CN202157790U 不压井作业抽油装置 Snubbing Oil Rig |
| 03/07/2012 | CN202157786U 油井防蜡除垢增油组合装置 Paraffin oil fouling by oil combination device |
| 03/07/2012 | CN101597488B Treating fluid for high solid phase drilling fluid filter cake removal |
| 03/07/2012 | CN101525986B Method for removing sulfate radical from injected water in oil field for anti-scaling |
| 03/01/2012 | WO2011091157A3 Differential pressure wellbore tool and related methods of use |
| 03/01/2012 | US20120048560 Debris Interface Control Device for Wellbore Cleaning Tools |
| 02/29/2012 | CN202152667U 一种油田化学剂井下投送装置 One kind of oilfield chemicals downhole delivery device |
| 02/29/2012 | CN202152666U 速取式抽油杆刮油器 Take style rod wiper speed control |
| 02/29/2012 | CN202152665U 采油井用加温热洗装置 Production wells by adding warm wash equipment |
| 02/29/2012 | CN102364040A Underground sleeve steel brush cleaner |
| 02/29/2012 | CN101498204B Balance type step-by-step releasable flushing packer |
| 02/23/2012 | WO2011146253A3 Retaining and isolating mechanisms for magnets in a magnetic cleaning tool |
| 02/23/2012 | WO2011091165A3 Wellbore filter screen and related methods of use |
| 02/23/2012 | US20120043087 High efficiency hydraulic drill bit |
| 02/22/2012 | EP2419601A1 Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings |
| 02/22/2012 | EP2419597A2 Drilling systems for cleaning wellbores, bits for wellbore cleaning, methods of forming such bits, and methods of cleaning wellbores using such bits |
| 02/22/2012 | CN202148886U 能挂绳套自动刮泥的转盘 Lanyard sets of automatic scraper can dial |
| 02/22/2012 | CN202148885U 新型电磁防蜡装置 New electromagnetic devices Wax |
| 02/22/2012 | CN202148884U 修井井口原油清洗装置 Workover Wellhead crude oil washing system |
| 02/22/2012 | CN202148883U 油井抗结垢结蜡装置 Well anti-fouling wax device |
| 02/22/2012 | CN202148882U 移动式电磁感应循环加热洗井装置 Mobile electromagnetic induction heating cycle flushing device |
| 02/22/2012 | CN102359364A Depressurizing and charging device for oil production well |
| 02/16/2012 | US20120037376 System and Method For Well Clean-Up |
| 02/15/2012 | CN202144735U 无动力井口加药集气装置 No power wellhead gas gathering dosing device |
| 02/15/2012 | CN101133135B 水溶性烷基磺酸在提高地下含石油的和/或含有气体的碳酸盐岩层的渗透性以及在溶解石油生产期间的碳酸盐杂质和/或含有碳酸盐的杂质中的用途 To improve the water-soluble alkyl sulfonic acid containing subterranean oil and / or carbonate-containing gas permeability of the formation and the dissolution of carbonate impurities during the production of oil and / or carbonate-containing impurities in the use of |
| 02/14/2012 | US8113285 Agitated wellbore cleaning tool and method |
| 02/08/2012 | CN202140068U 井口自动加药装置 Wellhead automatic dosing device |
| 02/08/2012 | CN202140067U 自动双阀混合收球装置 Automatic dual ball valve mixing device close |
| 02/07/2012 | US8109331 Slickline conveyed debris management system |
| 02/01/2012 | EP2411483A2 Emulsion-based cleaning composition for oilfield applications |
| 02/01/2012 | CN202132020U 井口高压喷射装置 Wellhead high-pressure injection device |
| 02/01/2012 | CN202132019U 可调式变频共振电磁防蜡装置 Adjustable frequency electromagnetic resonance apparatus Wax |
| 02/01/2012 | CN202131989U 新型抽油杆 The new rod |
| 02/01/2012 | CN1902376B 在地层增产处理中导致脱砂的方法和砾石充填地层的方法 Lead off the sand and gravel packing methods strata in the formation stimulation method |
| 02/01/2012 | CN102337865A Light type residual-oil scraping pipe gauge |
| 02/01/2012 | CN102337864A Safety valve in pipe |
| 02/01/2012 | CN102337111A Bio-enzyme blockage removal production promoter and application thereof |
| 01/31/2012 | CA2677577C Crosslinked acids comprising derivatized xanthan and subterranean acidizing applications |
| 01/26/2012 | US20120018163 Water Well Cleaning Apparatus and Method |
| 01/26/2012 | CA2804913A1 Bacterial control of water based fluids during subsurface injection and subsequent residence time in the subterranean formation |
| 01/25/2012 | CN202125281U Sealing oil wiper of pneumatic oil rod |
| 01/25/2012 | CN202125280U Pull-type electric heating energy-saving environment-friendly paraffin removing vehicle |
| 01/25/2012 | CN102330544A Spiral casing scraper |
| 01/24/2012 | US8101554 Well treatment comprising a polymer formed from a diallyl ammonium salt and a scale inhibitor |
| 01/24/2012 | CA2548645C Transporting fluids through a conduit |
| 01/22/2012 | CA2746901A1 Flow control apparatus |
| 01/18/2012 | CN202117635U Multistage self-circulation well flushing truck for oilfield water injection well |
| 01/18/2012 | CN202117634U Wellhead continuous feeding device for chemical agent |
| 01/18/2012 | CN202117633U Multifunctional casing scraper |
| 01/18/2012 | CN202117632U Suspension type mobile drilling rod slurry scraping device |
| 01/18/2012 | CN202117631U Magnetic current wax prevention device |
| 01/18/2012 | CN202117630U Comprehensive paraffin control viscosity-breaking device special for oilfields |
| 01/18/2012 | CN102322242A Adjustable frequency-variable resonant electromagnetic wax-proofing device |
| 01/17/2012 | US8096357 Casing make-up and running tool adapted for fluid and cement control |
| 01/12/2012 | US20120006554 Methods and devices of cleaning subsea structures |
| 01/11/2012 | CN202108474U Remote multi-well port chemical adding device of a cluster well array |
| 01/11/2012 | CN102312667A Concentric pipe layered steam injection system and method |
| 01/10/2012 | US8091646 Single phase microemulsions and in situ microemulsions for cleaning formation damage |
| 01/10/2012 | US8091645 In situ fluid formation for cleaning oil- or synthetic oil-based mud |
| 01/10/2012 | US8091644 Microemulsion or in-situ microemulsion for releasing stuck pipe |
| 01/05/2012 | US20120000657 Treatment fluid for wells drilled in oil mud, in the form of a delayed effect water-in-oil emulsion |
| 01/04/2012 | EP2401473A2 Diverter cup assembly |
| 01/04/2012 | EP2201212B1 Apparatus and method for ratcheting stimulation tool |
| 01/04/2012 | CN202100238U Underground 360-degree bit-rotating and descaling sampler |
| 01/04/2012 | CN102305050A SUN-W100 biological enzyme well completion production increasing process for well completion plugging removal of oil field |
| 01/04/2012 | CN102305040A Near-well de-plugging device for loose sand heavy oil reservoir |
| 01/03/2012 | CA2650336C Compositions and methods for removal of asphaltenes from a portion of a wellbore or subterranean formation using water-organic solvent emulsion with non-polar and polar organic solvents |
| 12/29/2011 | WO2011139837A3 Brush assembly with non-rotating stabilizer and brushes |
| 12/29/2011 | US20110315387 System and method for cleaning a bottom-hole formation zone of a wellbore |
| 12/28/2011 | CN202090907U 油井热洗监测装置 Hot wash oil monitoring device |
| 12/27/2011 | US8082996 Equipment for excavation of deep boreholes in geological formation and the manner of energy and material transport in the boreholes |
| 12/25/2011 | CA2708835A1 A system and method for cleaning a bottom-hole formation zone of a wellbore |
| 12/22/2011 | WO2011139831A3 Wellbore cleaning devices |
| 12/22/2011 | WO2011113032A3 Method and apparatus for washing dowhole tubulars and equipment |
| 12/22/2011 | US20110308805 Launching tool with interlock system for downhole cement plug and method |
| 12/22/2011 | US20110308804 Downhole Mixing Tool |
| 12/22/2011 | US20110308786 Diverter cup assembly |
| 12/21/2011 | CN202081865U 井下智能清蜡仪 Smart meter underground wax |
| 12/21/2011 | CN102287167A 一种机采井微生物清防蜡方法 A mechanism of microbial production wells Paraffin method |
| 12/21/2011 | CN102287166A 一种油管清洗的方法 One kind of method for cleaning tubing |
| 12/21/2011 | CN102287165A 新型电磁防蜡装置 New electromagnetic device Wax |
| 12/20/2011 | US8079415 Wellbore intervention tool |
| 12/15/2011 | WO2011130523A3 A tool for removing debris from a wellbore |
| 12/14/2011 | CN202073533U 油井生产管柱空心防垢筒 Scale oil production string hollow tube |
| 12/14/2011 | CN102278092A 一种用于地层含有无机垢堵塞的生物酶解堵工艺 A formation containing an inorganic dirt clogging biological enzyme blocking technology |
| 12/13/2011 | US8074717 Drilling method and downhole cleaning tool |
| 12/07/2011 | CN202064898U 井口管柱自动清洁装置 Wellhead column automatic cleaning device |
| 12/07/2011 | CN202064897U 油杆外表面清油装置 The outer surface of edible vegetable oil rod device |