| 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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| 10/07/2009 | CN201321852Y Constant-pressure blanking plug |
| 10/07/2009 | CN201321851Y Inclined shaft eccentric water distributor |
| 10/07/2009 | CN201321850Y Energy absorption buffer device for associated operation of composite perforation and formation test |
| 10/07/2009 | CN201321849Y Inner blind hole composite perforating gun |
| 10/07/2009 | CN201321848Y Filtering device for the tail pipe of a deep-well pump |
| 10/07/2009 | CN201321847Y Duplex type long stroke pumping unit |
| 10/07/2009 | CN201321846Y Walking-beam viscous well pumping unit |
| 10/07/2009 | CN201321845Y Balancing energy-saving box-type walking beam well pumping unit |
| 10/07/2009 | CN201321844Y Screw pump working condition control device |
| 10/07/2009 | CN201321843Y Weight box body device of oil pumping unit with sealed box body |
| 10/07/2009 | CN101553644A Method for producing viscous hydrocarbon using steam and carbon dioxide |
| 10/07/2009 | CN101553643A Stimulation and recovery of heavy hydrocarbon fluids |
| 10/07/2009 | CN101553642A Radially expanding a tubular element |
| 10/07/2009 | CN101553641A Dual cylinder lift pump system and method |
| 10/07/2009 | CN101553552A Degradable material assisted diversion |
| 10/07/2009 | CN101551097A Steam-injection boiler used for producing high-dryness superheated steam |
| 10/07/2009 | CN101550823A Method and device for improving the accuracy of flow rate test of flowmeter used for water injection wells in oil fields |
| 10/07/2009 | CN101550822A Method and device for improving accuracy of layered flow rate test by ultrasonic flowmeter used for water injection well in oil fields |
| 10/07/2009 | CN101550821A Oil recovery method of closed circulation and viscosity breakback of hot oil in viscous oil well and device |
| 10/07/2009 | CN101550820A Debris-free perforating apparatus and technique |
| 10/07/2009 | CN101550819A Flexible sucker rod string uphole and downhole technique |
| 10/07/2009 | CN101550818A Double-stroke flexible crank connecting device of pumping unit |
| 10/07/2009 | CN101550817A Hoisting system of stripper well in oil field |
| 10/07/2009 | CN101550816A Three-dimensional exploitation simulated experiment apparatus for natural gas hydrate |
| 10/07/2009 | CN101550809A Flexible lever gradient coupling compression joint technique |
| 10/07/2009 | CN101550808A Soft blocking self-releasing technique of flexible rod string |
| 10/07/2009 | CN101550807A Complex function unit sucker rod string |
| 10/06/2009 | US7597147 Temperature limited heaters using phase transformation of ferromagnetic material |
| 10/06/2009 | US7597145 Fluid-flow system, device and method |
| 10/06/2009 | US7597144 Process for recovering heavy oil utilizing one or more membranes |
| 10/06/2009 | US7597141 Flow nozzle assembly |
| 10/06/2009 | US7597140 Expansion device for expanding a pipe |
| 10/06/2009 | CA2572663C Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig |
| 10/06/2009 | CA2567524C Slidable sleeve plunger |
| 10/06/2009 | CA2543772C Method for delivering multi-phase mixtures and pump installation |
| 10/04/2009 | CA2660591A1 Ballistically compatible backpressure valve |
| 10/02/2009 | CA2653258A1 Method for induced production of petroleum by means of horizontal fractures |
| 10/01/2009 | WO2009120980A2 Selectively angled perforating |
| 10/01/2009 | WO2009120935A2 Wellhead hanger shoulder |
| 10/01/2009 | WO2009120208A1 Coated cylinder for walking beam compressor |
| 10/01/2009 | WO2009120070A1 Pit and related covered filter tube |
| 10/01/2009 | WO2009118512A2 Method of perforating for effective sand plug placement in horizontal wells |
| 10/01/2009 | WO2009118467A2 Method of installing an underwater riser |
| 10/01/2009 | WO2009098597A3 Method of controlling a recovery and upgrading operation in a reservor |
| 10/01/2009 | WO2009088620A3 Screen coupler for modular screen packs |
| 10/01/2009 | WO2009085760A3 Electric submersible pump (esp) with recirculation capability |
| 10/01/2009 | WO2002086029A3 In situ recovery from a relatively low permeability formation containing heavy hydrocarbons |
| 10/01/2009 | US20090246849 Biogenic Methane Production Enhancement Systems |
| 10/01/2009 | US20090242276 Pump Mechanism for Cooling of Rotary Bearings in Drilling Tools |
| 10/01/2009 | US20090242213 Downhole Tubular Expansion Tool and Method |
| 10/01/2009 | US20090242210 Downhole fluid recirculation valve |
| 10/01/2009 | US20090242208 Dead string completion assembly with injection system and methods |
| 10/01/2009 | US20090242205 Method and apparatus for detecting acoustic activity in a subsurface formation |
| 10/01/2009 | US20090242204 method of controlling water condensation in a near wellbore region of a formation |
| 10/01/2009 | US20090242202 Method of Perforating for Effective Sand Plug Placement in Horizontal Wells |
| 10/01/2009 | US20090242201 System and method for polymer distribution to well sites |
| 10/01/2009 | US20090242198 Selectively Angled Perforating |
| 10/01/2009 | US20090242197 Flow control system and method for downhole oil-water processing |
| 10/01/2009 | US20090242196 System and method for extraction of hydrocarbons by in-situ radio frequency heating of carbon bearing geological formations |
| 10/01/2009 | US20090242195 Top Hold Down Rod Pump with Hydraulically Activated Drain and Method of Use |
| 10/01/2009 | US20090242193 Downhole Tools |
| 10/01/2009 | US20090242192 Casing Stabbing Guide |
| 10/01/2009 | US20090242187 Hydraulically openable ported sub |
| 10/01/2009 | CA2722617A1 A collection device and method of using same |
| 10/01/2009 | CA2719562A1 Method of perforating for effective sand plug placement in horizontal wells |
| 10/01/2009 | CA2718439A1 Selectively angled perforating |
| 10/01/2009 | CA2715186A1 Low emission power generation and hydrocarbon recovery systems and methods |
| 09/30/2009 | EP2105578A1 Dead string completion assembly with injection system and methods |
| 09/30/2009 | EP1282732B1 Fluorescent monomers and tagged treatment polymers containing same for use in industrial water systems |
| 09/30/2009 | CN201318159Y Floating coil heater |
| 09/30/2009 | CN201318158Y Push-pull platform fixing device |
| 09/30/2009 | CN201318157Y Oil-soluble impervious screen pipe |
| 09/30/2009 | CN201318156Y By-pass sand control screen pipe |
| 09/30/2009 | CN201318155Y High-effective current control sieve tube |
| 09/30/2009 | CN201318154Y Speed reducer special purpose sliding rail |
| 09/30/2009 | CN201318153Y Supporting frame system for linear oil pumping unit |
| 09/30/2009 | CN101545470A Ground hydraulic augmented injection pump |
| 09/30/2009 | CN101545369A Method for alleviating corrosion of deep layer and pipeline of oilwell |
| 09/30/2009 | CN101545368A On-line depth profile control method for improving oil displacement effect of polymer of offshore production well |
| 09/30/2009 | CN101545367A Sand control screen with circular seam |
| 09/30/2009 | CN101545366A An underwater mining method and its devices |
| 09/30/2009 | CN101545365A Fine adjustment counterbalance for oil pumping unit |
| 09/30/2009 | CN101545364A Single machine multi-well horizontal type flexible energy-saving oil pumping unit |
| 09/30/2009 | CN101545361A Fitting arrangements and methods of installing fitting arrangements in a well bore |
| 09/30/2009 | CN100545416C Throwing type high energy gas fracturing device |
| 09/30/2009 | CN100545415C Method for in situ treatment of hydrocarbon-containing formation |
| 09/30/2009 | CN100545414C Method and system for injecting a treatment fluid into a well |
| 09/29/2009 | US7595284 adding to an aqueous fluid gelled with at least one amidoamine viscoelastic surfactant in an amount effective to reduce the viscosity of the gelled aqueous fluid, includes includes at least one metal ion source |
| 09/29/2009 | US7595283 Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation |
| 09/29/2009 | US7595282 Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures |
| 09/29/2009 | US7595281 mixing particles such as ceramic, sand with water to form a treatment fluid, introducing the fluid in a subterranean formation, introducing tetrafluoroethylene an active material into the formation to form a oil-wet coating of active material, facilitates movement of aqueous treatment fluid through well |
| 09/29/2009 | US7594543 Method and apparatus for production in oil wells |
| 09/29/2009 | CA2445449C In-situ combustion for oil recovery |
| 09/29/2009 | CA2314573C System for acquiring data from a facility and method |
| 09/27/2009 | CA2627424A1 Experimental and economic analysis of the thermal solvent and hybrid solvent processes |
| 09/24/2009 | WO2009117486A2 Distributed sensors-controller for active vibration damping from surface |
| 09/24/2009 | WO2009117191A1 Viscous oil recovery using emulsions |
| 09/24/2009 | WO2009115829A2 Flow restrictor |
| 09/24/2009 | WO2009115803A1 Device and method of lining a wellbore |
| 09/24/2009 | WO2009114913A1 Vitiated steam generator |