| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
|---|
| 07/04/2012 | CN102536178A Method for prolonging augmented injection measure period of water injection well scaling easily |
| 07/04/2012 | CN102536166A Method for deep treatment of oil layer through self-generation foam acidification |
| 07/04/2012 | CN101519954B Multifunctional combination operation process and device for injection pump unit |
| 07/03/2012 | US8210263 Method for changing the wettability of rock formations |
| 07/03/2012 | CA2560939C Process for disruption of filter cakes |
| 06/28/2012 | WO2012088132A2 Surface signal for flow blockage for a subterranean debris collection apparatus |
| 06/27/2012 | EP2467564A1 Downhole tool head for releasing precipitated solids |
| 06/27/2012 | CN101660398B Sucker rod well-head wax removal device |
| 06/27/2012 | CN101535189B Treating liquids in oil extraction |
| 06/27/2012 | CN101260793B Horizontal sand spade for oil well |
| 06/26/2012 | US8205676 Water well cleaning apparatus and method |
| 06/26/2012 | CA2632231C Inhibiting naphthenate solids and emulsions in crude oil |
| 06/26/2012 | CA2544594C Method and system for injecting a treatment fluid into a well |
| 06/21/2012 | WO2012083114A2 Compositions and methods relating to establishing circulation in stand-alone-screens without using washpipes |
| 06/21/2012 | WO2012082466A2 Debris collection device with enhanced circulation feature |
| 06/21/2012 | WO2012082463A2 Vacuum debris removal with articulated pickup and visual capability |
| 06/21/2012 | US20120152551 Inducing flowback of damaging mud-induced materials and debris to improve acid stimulation of long horizontal injection wells in tight carbonate formations |
| 06/20/2012 | EP2464811A1 Downhole device |
| 06/20/2012 | CN202280449U 油田移动式循环洗井车 Mobile cycle oil washing cars |
| 06/14/2012 | US20120145402 Debris removal method and assembly |
| 06/14/2012 | US20120145377 Downhole tool head for releasing precipitated solids |
| 06/13/2012 | CN202273653U 轻型残油清刮管规 Pigging clear residual light regulation |
| 06/13/2012 | CN202273652U 一种通井刮削验管多功能封隔器 One kind of scrape through test tube wells multifunction packer |
| 06/13/2012 | CN102493786A Mechanical thermal cleaning method for pipe poles in oilfield wellhead sites |
| 06/06/2012 | EP2459842A2 Wellbore cleanout tool |
| 06/06/2012 | EP2173831B1 Well treatment |
| 06/05/2012 | CA2637734C Methods and compositions for acidization in a wellbore |
| 05/31/2012 | DE102010052359A1 Reinigungsvorrichtung zur Untertage-Anwendung in Bohrlochkomplettierungen von Tiefbohrungen Cleaning apparatus for downhole use in well completions of deep drilling |
| 05/30/2012 | EP2458134A2 Cleaning device for underground use in bore hole completion for deep drilling |
| 05/30/2012 | CN202250006U Intelligent medicine adding device |
| 05/30/2012 | CN202249968U Novel oil extractor |
| 05/30/2012 | CN202249966U Mobile oil fishing vehicle |
| 05/30/2012 | CN202249965U Self-paraffin removal viscidity-reducing tubular column for oil well |
| 05/30/2012 | CN202249960U Novel acid liquid release device |
| 05/30/2012 | CN202249959U Blowout control-type oil wiper for pumping rod |
| 05/30/2012 | CN202249958U Wax-control, scale-inhibition and viscosity-reduction device |
| 05/30/2012 | CN202249957U Coal powder spiral anti-blocking device |
| 05/30/2012 | CN202249956U Moving steam de-waxing device |
| 05/30/2012 | CN202249955U Well washing cut-off device |
| 05/30/2012 | CN202249954U Cleaning device for coal mine underground drainage pipeline |
| 05/30/2012 | CN1977089B Low dosage naphthenate inhibitors |
| 05/30/2012 | CN102482926A 用于释放沉淀固体的井下工具头 Downhole tool head for the release of solid precipitation |
| 05/30/2012 | CN102477848A 一种改善油井维护的工艺方法 A process for improving the well maintained |
| 05/30/2012 | CN101351616B Equipment for repairing wellbore and method for improving perforation performance |
| 05/29/2012 | US8186438 Wellbore debris cleanout with coiled tubing using degradable fibers |
| 05/24/2012 | WO2012066514A1 Artificial system for simultaneous production and maintenance with mechanical pumping with flexible pipe for fluid extraction |
| 05/24/2012 | CA2818101A1 Artificial system for simultaneous production and maintenance with mechanical pumping with flexible pipe for fluid extraction |
| 05/23/2012 | CN202228060U Pressure-relief liquid injection device for producing well |
| 05/23/2012 | CN202228044U Screw type sleeve scrapping device |
| 05/23/2012 | CN202228043U Safety valve in pipes |
| 05/23/2012 | CN102465685A 油管刮蜡器 Tubing scraping wax |
| 05/23/2012 | CN101936951B Method for detecting mechanical system of drilling machine well mouth drill stem flux leakage detector |
| 05/23/2012 | CN101555780B Self-operated drop instillator |
| 05/23/2012 | CN101451062B Biological oil displacement agent and production method and use thereof |
| 05/17/2012 | US20120118578 Purging of Fiber Optic Conduits in Subterranean Wells |
| 05/17/2012 | US20120118577 Wellbore cleanout tool |
| 05/17/2012 | US20120118576 Modular tool for wellbore cleaning |
| 05/16/2012 | CN202220586U Electromagnetic anti-wax scale-borer |
| 05/16/2012 | CN102454385A Application of tire oil to paraffin removal vehicle for oil well |
| 05/15/2012 | US8176981 Fluorinated surfactants and methods of using the same |
| 05/10/2012 | WO2012060712A1 Method and cleaning tool device |
| 05/10/2012 | WO2012036854A3 Debris chamber with helical flow path for enhanced subterranean debris removal |
| 05/10/2012 | US20120111557 Landing sub for a wiper |
| 05/10/2012 | CA2816249A1 Method and cleaning tool device |
| 05/09/2012 | CN202215215U Energy-saving oil production device |
| 05/09/2012 | CN202215209U Energy-saving pumping unit-free device having functions of long-distance oil collecting, well washing, water delivering and irrigating |
| 05/09/2012 | CN202215208U Energy-saving, oil-extracting and dewaxing device |
| 05/09/2012 | CN202215204U Cleaning machine for inner wall of oil pipe |
| 05/09/2012 | CN202215203U Device for cleaning oil pipe |
| 05/09/2012 | CN102449260A Heat transport dead leg |
| 05/03/2012 | WO2012058144A2 Hydrate deposit inhibition with surface-chemical combination |
| 05/03/2012 | WO2012058143A2 Method and apparatus to remove deposits |
| 05/03/2012 | US20120103621 Subsea system with subsea cooler and method for cleaning the subsea cooler |
| 05/03/2012 | US20120103617 Water based completion and displacement fluid and method of use |
| 05/02/2012 | EP2446107A1 A completion assembly and a method for stimulating, segmenting and controlling erd wells |
| 05/01/2012 | CA2652042C Energized fluid for generating self-cleaning filter cake |
| 05/01/2012 | CA2623923C Method of treating well with foamed composition |
| 05/01/2012 | CA2575212C Cement-free zeolite and fly ash settable fluids and methods therefor |
| 04/26/2012 | US20120097614 Norm removal from frac water |
| 04/26/2012 | US20120097362 Subsea cooler and method for cleaning the subsea cooler |
| 04/24/2012 | CA2483803C Well treatment system and method |
| 04/18/2012 | EP2440742A2 Debris removal method and assembly |
| 04/18/2012 | CN202194622U 新型油井带压加药装置 The new wells with pressure dosing device |
| 04/18/2012 | CN202194621U 防卡式刮削器 Anti-cassette scrapers |
| 04/18/2012 | CN101608110B 一种复合解堵剂及其使用方法 A composite plugging agents and methods of use |
| 04/11/2012 | CN202187749U 光杆刮油器 Rod scraping oil |
| 04/11/2012 | CN202187748U 油管通道刮削解堵器 Filter plugging the tubing channel scrapers |
| 04/11/2012 | CN202187747U 油井用管式磁防蜡降粘装置 Oil well tubular magnetic viscosity means Wax |
| 04/10/2012 | CA2575150C Well drilling and servicing fluids with magnesia bridging solids and methods of drilling, completing and working over a well therewith |
| 04/04/2012 | EP2436872A2 Methods and compositions for thermally treating a conduit used for hydrocarbon production or transmission to help remove paraffing wax buildup |
| 04/04/2012 | EP2436871A2 Methods and compositions for thermally treating a conduit used for a hydrocarbon production or transmission to help remove paraffin wax buildup |
| 04/04/2012 | CN202181879U 油井高压蒸汽热洗装置 Heat oil pressure steam cleaning device |
| 04/03/2012 | CA2628802C Method and apparatus for hydraulic treatment of a wellbore |
| 03/29/2012 | CA2753622A1 Downhole catcher for an actuating ball and method |
| 03/28/2012 | CN202176317U 抽油机光杆自动清垢装置 Automatically cleared dirt rod pumping unit |
| 03/28/2012 | CN202176316U 空心杆热洗装置 Hollow rod hot wash equipment |
| 03/28/2012 | CN202176315U 双制式热洗井防倒灌定压滑套 Double standard hot flushing anti-intrusion constant pressure sleeve |
| 03/28/2012 | CN202176314U 一种多功能洗井车 A multifunctional washing cars |
| 03/28/2012 | CN102395749A Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings |
| 03/27/2012 | US8141628 Downhole deburring tool |