| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
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| 02/11/2010 | CA2731656A1 Drill string mounted rotatable tool and cleaning method |
| 02/10/2010 | EP1355169B1 Method and apparatus for controlling chemical injection of a surface treatment system |
| 02/10/2010 | CN201401154Y Self-operated dropping device |
| 02/09/2010 | US7659315 Use of polyaminomethylenephosphonates as dispersing agents |
| 02/04/2010 | US20100025042 Drilling method and downhole cleaning tool |
| 02/02/2010 | US7655096 Coiled tubing wellbore cleanout |
| 02/02/2010 | CA2552049C Orthoester compositions and methods of use in subterranean applications |
| 02/02/2010 | CA2544834C Dissolving filter cake |
| 02/02/2010 | CA2529895C Method for stimulating an oilfield comprising using different scale-inhibitors |
| 02/02/2010 | CA2394858C Acid based micro-emulsions |
| 01/28/2010 | WO2010010326A2 Pipeline entry system |
| 01/28/2010 | US20100018713 Launching tool with interlock system for downhole cement plug and method |
| 01/27/2010 | CN201391283Y Self-balance closed medicine feeding device |
| 01/27/2010 | CN201391282Y Automatic medicament feeding device for cluster well site casings |
| 01/27/2010 | CN201391281Y Device for delivering balls into oil pipelines |
| 01/27/2010 | CN201391280Y Superconductive heat washing paraffin removal device |
| 01/27/2010 | CN201391275Y Hot-washing water-creep combination valve |
| 01/23/2010 | CA2639030A1 Mutual solvent system and method for improved oil and gas permeability in high temperature formations |
| 01/21/2010 | WO2010008653A2 Apparatus for cleaning boreholes within substrates |
| 01/21/2010 | WO2010007434A2 Improved downhole tool |
| 01/21/2010 | CA2730481A1 Improved downhole tool |
| 01/21/2010 | CA2728072A1 Apparatus for cleaning boreholes within substrates |
| 01/20/2010 | CN201386542Y Wax and stain removal device of oil pumping pipe |
| 01/20/2010 | CN201386541Y Wax removal and well cleanout device for gas heat carrier |
| 01/20/2010 | CN101629481A Oil well anti-scaling paraffin precipitation device |
| 01/19/2010 | CA2496117C Gas hydrate inhibitors |
| 01/14/2010 | WO2009120957A3 Downhole debris removal tool |
| 01/14/2010 | US20100006279 Intervention Tool with Operational Parameter Sensors |
| 01/13/2010 | CN201381830Y Oil recovery pipe paraffin scraper |
| 01/13/2010 | CN201381829Y Heating device for paraffin removal of pumping well |
| 01/13/2010 | CN201381828Y Normal pressure oil well hot washing paraffin removal replacement device |
| 01/13/2010 | CN201381827Y Full-automatic cleaning machine |
| 01/12/2010 | CA2416184C Compositions for controlling scaling and completion fluids |
| 01/07/2010 | US20100000738 Cleaning apparatus and methods |
| 01/07/2010 | US20100000728 Methods and apparatus for removing deposits on components in a downhole tool |
| 01/06/2010 | CN201375975Y Timed heating ball collecting device |
| 01/05/2010 | US7640981 Scale inhibition method |
| 12/31/2009 | US20090321077 Pigging Of Flowlines By In-Situ Generated Foam Pigs |
| 12/30/2009 | CN201372788Y Acidproof sand blender vehicle |
| 12/30/2009 | CN201372779Y Oil casing communicating vessel |
| 12/23/2009 | CN201367884Y Reusable drifting and pipe scraping integrated device |
| 12/23/2009 | CN101608110A Compound blockage relieving agent and using method thereof |
| 12/23/2009 | CN100572744C Oil well wax-preventing method |
| 12/22/2009 | CA2458539C Method for inhibiting hydrate formation |
| 12/22/2009 | CA2418933C Scale dissolver fluid |
| 12/16/2009 | CN201363116Y Integrated process device for sand removal and fishing outside pipe |
| 12/15/2009 | US7632786 Methods and fluid compositions for depositing and removing filter cake in a well bore |
| 12/15/2009 | CA2564566C Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations |
| 12/15/2009 | CA2385605C A method of improving the permeability of an underground petroleum-containing formation |
| 12/15/2009 | CA2366350C Method for treatment of underground reservoirs |
| 12/10/2009 | WO2009102705A3 Improved downhole debris cather and associated mill |
| 12/10/2009 | WO2009102703A3 Self adjusting debris excluder sub |
| 12/10/2009 | US20090301722 System, method, and apparatus for injection well clean-up operations |
| 12/09/2009 | CN201358758Y Scraping sand rammer |
| 12/09/2009 | CN201358757Y Oil-well sand washing and well cleaning truck in oil field |
| 12/09/2009 | CN201358756Y Strong magnetic combination device capable of preventing blowout and scraping paraffin |
| 12/09/2009 | CN101598012A Electric heating fused cleaning device for modulating wave oil tubes and sucker rods |
| 12/09/2009 | CN101597488A High solid phase drilling fluid filter cake removal treating fluid |
| 12/08/2009 | US7628213 Multi-cycle downhole tool with hydraulic damping |
| 12/08/2009 | CA2478433C Composition and process for well cleaning |
| 12/02/2009 | EP2125988A2 Processing fluid for wells bored with oil-based muds in the form of a delayed effect water-in-oil emulsion |
| 12/02/2009 | CN100564792C Method for providing a temporary barrier in a flow pathway |
| 12/01/2009 | US7624806 Pipe cleaning tool and method |
| 12/01/2009 | US7624803 Injection apparatus for injecting an activated fluid into a well-bore and related injection method |
| 11/26/2009 | WO2009143061A2 Radio and microwave treatment of oil wells |
| 11/26/2009 | WO2009141754A2 Dynamic scale removal tool |
| 11/26/2009 | WO2009048935A3 Method, apparatus, and magnet for magnetically treating fluids |
| 11/26/2009 | US20090288834 Dynamic scale removal tool |
| 11/26/2009 | US20090288825 Surfactant method for improved oil recovery from subterranean reservoirs |
| 11/24/2009 | CA2380394C Grafted polymers as gas hydrate inhibitors |
| 11/21/2009 | CA2666271A1 Borehole cleaning device |
| 11/20/2009 | CA2671293A1 Mitigation of elemental sulfur deposition during production of hydrocarbon gases |
| 11/18/2009 | CN201347744Y Sleeve type well flushing device |
| 11/18/2009 | CN101580704A Washing agent and washing method for paraffin removal and unplugging of oil wells and oil pumping pipelines of oil fields |
| 11/12/2009 | WO2009116869A3 Cleaning tool |
| 11/11/2009 | CN201344020Y Nylon paraffin scraping device |
| 11/11/2009 | CN201344019Y Positioning and hot washing device |
| 11/11/2009 | CN201344018Y Oil field special-purpose sweep frequency electromagnetic paraffin cleaning and preventing device |
| 11/10/2009 | CA2512480C Controlling transient pressure conditions in a wellbore |
| 11/10/2009 | CA2378073C Method for treatment of underground reservoirs |
| 11/07/2009 | CA2665442A1 Phosphorus-free gelled hydrocarbon compositions and method for use thereof |
| 11/05/2009 | WO2009112948A3 Methods and systems of treating a wellbore |
| 11/05/2009 | US20090272524 Method and apparatus for cleaning internal surfaces of downhole casing strings and other tubular goods |
| 11/03/2009 | CA2437285C Viscoelastic wellbore treatment fluids comprising oligomeric surfactants |
| 11/03/2009 | CA2365385C Use of 13c-nmr to detect binding |
| 10/22/2009 | WO2009128915A2 Devices, systems and methods relating to down hole operations |
| 10/22/2009 | US20090260799 Multiple Point Adjustable Depth Air Sparging Well System |
| 10/22/2009 | CA2752324A1 Devices, systems and methods relating to down hole operations |
| 10/20/2009 | CA2401681C Controlled downhole chemical injection |
| 10/15/2009 | US20090255665 Dual function cleaning tool |
| 10/14/2009 | CN201326389Y Oil pipe lifting and discharging system |
| 10/14/2009 | CN101555780A Self-operated drop instillator |
| 10/14/2009 | CN100549361C Centering paraffin scraper for sucker rod |
| 10/13/2009 | CA2416116C Method and apparatus for formation damage removal |
| 10/08/2009 | WO2009123468A1 Cleaning tool device |
| 10/07/2009 | EP1882080B1 Wellbore cleaning tool and method |
| 10/07/2009 | CN201321842Y Air pressure type chemicals adding device |
| 10/07/2009 | CN201321841Y Timing automatic ball-pitching device |
| 10/07/2009 | CN101549349A Delivery pipeline cleaning device |
| 10/01/2009 | WO2009120957A2 Downhole debris removal tool |