| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 04/27/2011 | CN201810401U Gas caloric value allocation device in underground coal deployment combined-cycle power plant system |
| 04/27/2011 | CN201810296U Array type cluster well group workover operation device |
| 04/27/2011 | CN201810295U Skid-mounted CO2 pumping device |
| 04/27/2011 | CN201810294U Indoor simulation experiment device for high temperature gas well foaming drainage |
| 04/27/2011 | CN201810293U Diluting and preparing device for chemical flooding in oil field |
| 04/27/2011 | CN201810292U Separated layer water injection process tubular column |
| 04/27/2011 | CN201810291U Zonal injection automatic circulation switch device and automatic circulation zonal injection system |
| 04/27/2011 | CN201810290U Eccentric water distributor |
| 04/27/2011 | CN201810289U Fixed downhole choke holder |
| 04/27/2011 | CN201810288U All-welded vertical joint type sand control screen pipe |
| 04/27/2011 | CN201810287U Balance lifting device |
| 04/27/2011 | CN201810286U Selective mining mixed pumping tubular column applicable to two-layer mining |
| 04/27/2011 | CN201810285U Balance adjusting combined tool for beam-pumping unit |
| 04/27/2011 | CN201810284U Hydraulic perforation, fracturing and gas lifting drainage integrated process tubular column |
| 04/27/2011 | CN201810283U Mechanical reversing and reducing tower type oil pumping unit |
| 04/27/2011 | CN201810282U Belt corrector for oil pumping unit motor |
| 04/27/2011 | CN201810281U Balancing device of pumping unit |
| 04/27/2011 | CN201810280U Brake protection lock of oil pumping unit |
| 04/27/2011 | CN201810279U Oil pumping machine with belt transmission but without crank |
| 04/27/2011 | CN201810278U Electric bottom-moving long-stroke oil pumping machine |
| 04/27/2011 | CN201810277U Cantilever rotary upturning long-stroke intelligent oil-pumping machine |
| 04/27/2011 | CN201810276U Beam type pumping unit for two wells |
| 04/27/2011 | CN201810274U Underground automatic dosing device |
| 04/27/2011 | CN201810270U Vertical well cementation manifold for ocean oil production |
| 04/27/2011 | CN201810261U Water-injecting packer capable of being backwashed |
| 04/27/2011 | CN201810257U Mechanical water plugging pipe string without slips |
| 04/27/2011 | CN201810255U Filling and producing dual-purpose casting head of combustion oil layer |
| 04/27/2011 | CN201810232U Beam hanger of vertical oil pumping unit |
| 04/27/2011 | CN1995699B Gas pretreatment device for logging and its alarming controller |
| 04/27/2011 | CN102037211A Field management for substantially constant composition gas generation |
| 04/27/2011 | CN102037210A Using nanoparticles for water flow control in subterranean formations |
| 04/27/2011 | CN102037096A Mutual solvent-soluble and/or alcohol blends-soluble particles for viscoelastic surfactant fluids |
| 04/27/2011 | CN102032145A Differential pressure power pressure booster |
| 04/27/2011 | CN102031967A Layered flow test method and flow regulator used in same |
| 04/27/2011 | CN102031956A Built-in method of oil deposit physical model mineshaft |
| 04/27/2011 | CN102031955A Ultrasonic-assisted reservoir stratum chemical blockage removal experimental facility and experimental method |
| 04/27/2011 | CN102031954A Coal and rock bore hydraulic fracture experimental apparatus |
| 04/27/2011 | CN102031953A Underground position selecting hydraulic decoding method and device of intelligent well |
| 04/27/2011 | CN102031952A Multi-stage perforation supercharging method |
| 04/27/2011 | CN102031951A Linear motor-driven belt pumping unit |
| 04/27/2011 | CN102031950A Hole-forming process method for comb gas extraction borehole in coal seam roof |
| 04/27/2011 | CN102031949A Gas lift method of combined ball plug for drainage and gas production of oil and gas well |
| 04/27/2011 | CN102031948A Wheel type pumping unit of guide stroke extender |
| 04/27/2011 | CN102031947A Back wash pump negative-pressure oil extraction device |
| 04/27/2011 | CN102031940A Method for allowing downhole tool to pass through water distributors back and forth and execution device |
| 04/27/2011 | CN102031931A Self-rotating jet drilling device |
| 04/27/2011 | CN102031102A Preparation method and fracturing construction method of locally and continuously mixed clean fracturing fluid additive |
| 04/27/2011 | CN101255790B Locating method and fuze for intelligent tracing cased well |
| 04/27/2011 | CA2684049A1 Infill well methods for sagd well heavy hydrocarbon recovery operations |
| 04/26/2011 | US7932216 Comprising reaction products of a metal carboxylate (oxoaluminum acylate), organic acids (2-ethylhexanoic acid), and an ester (isopropyl hexanoate ester); gelling system for use in fracturing, used in wellbores |
| 04/26/2011 | US7932215 Methods of treating a portion of a well with a polymer or polymer system capable of forming a gel that dissolves at a low and high pH |
| 04/26/2011 | US7932214 Foamed gel systems for fracturing subterranean formations, and methods for making and using same |
| 04/26/2011 | US7931966 Proppant material and formation hydraulic fracturing method |
| 04/26/2011 | US7931311 Sealed tubular joint comprising local and initial added thickness(es) by means of plastic expansion |
| 04/26/2011 | US7931089 Proppant and methods of use |
| 04/26/2011 | US7931088 Methods for treating a well by simultaneously introducing into a mixer streams of water, a viscosity-increasing agent, and a particulate and introducing the mixture into the well |
| 04/26/2011 | US7931087 Method of fracturing using lightweight polyamide particulates |
| 04/26/2011 | US7931086 Heating systems for heating subsurface formations |
| 04/26/2011 | US7931084 Methods for treating a subterranean formation by introducing a treatment fluid containing a proppant and a swellable particulate and subsequently degrading the swellable particulate |
| 04/26/2011 | US7931083 Integrated system and method for steam-assisted gravity drainage (SAGD)-heavy oil production to produce super-heated steam without liquid waste discharge |
| 04/26/2011 | US7931082 Method and system for centralized well treatment |
| 04/26/2011 | US7931080 Method and system for extraction of hydrocarbons from oil sands |
| 04/26/2011 | CA2718659A1 Low temperature coated particles for use as proppants or in gravel pack s, methods for making and using the same |
| 04/26/2011 | CA2643743C Method and apparatus for centralized proppant storage and metering |
| 04/26/2011 | CA2631851C Water-based polymers for use as friction reducers in aqueous treatment fluids |
| 04/26/2011 | CA2597565C One trip cemented expandable monobore liner system and method |
| 04/26/2011 | CA2541459C Method system and program storage device for simulating interfacial slip in a hydraulic fracturing simulator software |
| 04/26/2011 | CA2493017C Method and apparatus for causing pressure variations in a wellbore |
| 04/26/2011 | CA2455677C Dynamic reduction of the moisture layer during the displacement of a viscoelastic fluid using a fluid with lower viscosity |
| 04/26/2011 | CA2438559C Downhole latch |
| 04/26/2011 | CA2415437C Oil well stuffing box packing |
| 04/23/2011 | CA2718462A1 Oil recovery process |
| 04/21/2011 | WO2011047096A1 In situ decomposition of carbonyls at high temperature for fixing incomplete and failed well seals |
| 04/21/2011 | WO2011046747A2 Coaxial electric submersible pump flow meter |
| 04/21/2011 | WO2011046670A1 Hydrocarbon recovery operations fluids and methods for using the same |
| 04/21/2011 | WO2011045603A1 Hydrocarbons |
| 04/21/2011 | WO2011045021A2 Perforating gun having self-closing penetration holes |
| 04/21/2011 | WO2011044612A1 Proppants |
| 04/21/2011 | WO2011019469A3 Systems and methods for running casing into wells drilled with dual-gradient mud systems |
| 04/21/2011 | WO2011008639A3 Subterranean valve operated by string relative movement |
| 04/21/2011 | WO2011008592A3 Perforating and fracturing system |
| 04/21/2011 | WO2011005836A3 Methods for treating a wellbore |
| 04/21/2011 | WO2011005750A3 Fracturing system and method |
| 04/21/2011 | WO2011005725A3 Method and system for enhanced oil recovery |
| 04/21/2011 | WO2011005672A3 Methods for treating carbonate hydrocarbon-bearing formations with fluorinated amphoteric compounds |
| 04/21/2011 | WO2011005104A3 A down hole well tool with expansion tool |
| 04/21/2011 | WO2010151661A4 Sampling skid for subsea wells |
| 04/21/2011 | WO2010150123A3 Method for treatment of a well using high solid content fluid delivery |
| 04/21/2011 | WO2010147650A3 Treatment of particles for improved performance as proppants |
| 04/21/2011 | WO2010141198A3 Permeability flow balancing within integral screen joints |
| 04/21/2011 | WO2010023585A3 System, method and apparatus for breaking fracture fluids |
| 04/21/2011 | US20110092398 Viscoelastic surfactant fluids and related methods of use |
| 04/21/2011 | US20110089225 Low Turbulence Argon Purging System |
| 04/21/2011 | US20110088946 Pressure cycle operated perforating firing head |
| 04/21/2011 | US20110088910 Monitoring system for pipelines or risers in floating production installations |
| 04/21/2011 | US20110088909 Stabplate connections |
| 04/21/2011 | US20110088905 Method for impulse stimulation of oil and gas well production |
| 04/21/2011 | US20110088904 In situ recovery from a hydrocarbon containing formation |
| 04/21/2011 | US20110088902 Diverting agents for water shut off |
| 04/21/2011 | US20110088900 Method of treating a formation using deformable proppants |