| 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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| 09/16/2009 | CN201310334Y Oil gas well security closed swabbing pulling-out device |
| 09/16/2009 | CN201310333Y Pumping unit self-locking unloading instrument |
| 09/16/2009 | CN201310332Y Adjustable weight counterbalance of wire rope oil-pumping machine |
| 09/16/2009 | CN201310331Y Simple power platform of wire rope oil pumping unit |
| 09/16/2009 | CN201310330Y An external counterbalancing, guiding and adjusting device for wire rope oil pumping unit |
| 09/16/2009 | CN201310329Y Device for adjusting position of frame for wire rope oil pumping unit |
| 09/16/2009 | CN201310328Y Power platform of double-well wire rope oil pumping unit |
| 09/16/2009 | CN201310327Y Discharge assisting device |
| 09/16/2009 | CN201310326Y Compressed type wellhead oil pumping device |
| 09/16/2009 | CN101535595A Wellbore method and apparatus for completion, production and injection |
| 09/16/2009 | CN101535594A Polyelectrolyte complexes for oil and gas applications |
| 09/16/2009 | CN101532488A Multifunctional linear sliding guide sleeve |
| 09/16/2009 | CN101532380A Small-scale hydrogen sulfide removal device for well mouth of oil well |
| 09/16/2009 | CN101532379A Full-range sand-adding yield increase construction method for oil well |
| 09/16/2009 | CN101532378A Expandable sand control screen pipe |
| 09/16/2009 | CN101532377A Pendulum-type energy-saving oil extractor |
| 09/16/2009 | CN101532372A Sectional type sieve tube completion tubular column |
| 09/16/2009 | CN101531893A Functional resin tectorial membrane proppant and preparation method thereof |
| 09/16/2009 | CN100540844C Methods for controlling sand strip |
| 09/16/2009 | CN100540843C In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
| 09/15/2009 | US7589050 Effective at dissolving siliceous clays and keeping dissolved materials in solution; prevents re-precipitation; for sandstone stimulation, removal of clay-containing drilling fluid components and filter cakes from wellbores, sandstone acid fracturing, and gravel pack and proppant pack cleaning |
| 09/15/2009 | US7589048 Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation |
| 09/15/2009 | US7588270 Threaded tubular joint comprising sealing surfaces |
| 09/15/2009 | US7588101 Radially expandable downhole fluid jet cutting tool having an inflatable member |
| 09/15/2009 | US7588086 Ported velocity tube for gas lift operations |
| 09/15/2009 | US7588085 introducing a fracturing fluid ( a biopolymer or synthetic polymer and a surfactant as viscosifying agent) into the subterranean formation to create a fracture, injecting a proppant ( gravel, sand) into the fracturing fluid to form a single layer of proppant in the fracture; enhanced hydrocarbon recovery |
| 09/15/2009 | US7588081 Method of modifying permeability between injection and production wells |
| 09/15/2009 | US7588079 Well screen |
| 09/15/2009 | US7588076 Pumping and repairing unit |
| 09/15/2009 | CA2572349C Perforating gun |
| 09/15/2009 | CA2563136C Gas operated pump for hydrocarbon wells |
| 09/15/2009 | CA2562070C System and method for determining pump underperformance |
| 09/15/2009 | CA2553894C Compositions and methods for the delivery of chemical components in subterranean well bores |
| 09/15/2009 | CA2535352C Using fluids at elevated temperatures to increase fracture gradients |
| 09/15/2009 | CA2524836C System and method for fail-safe disconnect from a subsea well |
| 09/15/2009 | CA2513263C Expandable tubing and method |
| 09/15/2009 | CA2487953C Methods of consolidating formations or forming chemical casing or both while drilling |
| 09/15/2009 | CA2472681C Additive for oil-based drilling fluids |
| 09/15/2009 | CA2468900C Method and apparatus for expanding and separating tubulars in a wellbore |
| 09/15/2009 | CA2461940C Multi-shot tubing perforator |
| 09/15/2009 | CA2460124C Friction reducing composition and method |
| 09/15/2009 | CA2459672C Organosilicon containing compositions for enhancing hydrocarbon production and method of using the same |
| 09/15/2009 | CA2411200C Downhole anchoring tools conveyed by non-rigid carriers |
| 09/14/2009 | WO2009151684A2 Temperature triggered actuator |
| 09/14/2009 | CA2752535A1 Temperature triggered actuator |
| 09/14/2009 | CA2677867A1 Temperature triggered actuator |
| 09/14/2009 | CA2639036A1 A method for monitoring a subterranean fracture |
| 09/11/2009 | WO2009111804A2 Heat generator for screen deployment |
| 09/11/2009 | WO2009111772A2 Buffer for explosive device |
| 09/11/2009 | WO2009111693A2 Through tubing gun lock |
| 09/11/2009 | WO2009111383A2 Sympathetic ignition closed packed propellant gas generator |
| 09/11/2009 | WO2009110804A1 A method and device for making lateral openings out of a wellbore |
| 09/11/2009 | WO2009109788A1 A switching device for, and a method of switching, a downhole tool |
| 09/11/2009 | WO2009109758A2 On-the-fly acid blender with sampling equipment |
| 09/11/2009 | WO2009109599A1 A method and an apparatus for downhole injecting one or more treatment fluids. |
| 09/11/2009 | WO2009109489A1 Apparatus for inductive heating of oil sand and heavy oil deposits by way of current-carrying conductors |
| 09/11/2009 | WO2009088624A3 Apparatus for reducing water production in gas wells |
| 09/11/2009 | WO2009088621A3 Delayed acting gravel pack fluid loss valve |
| 09/11/2009 | WO2009079364A3 Electrical submersible pump and gas compressor |
| 09/11/2009 | WO2009076334A3 Zonal isolation of telescoping perforation appartus with memory based material |
| 09/11/2009 | WO2009060410A3 Methods for manipulation of air flow into aquifers |
| 09/11/2009 | WO2007129099A3 Perforating and fracturing |
| 09/11/2009 | WO2007092667A3 Synergistic surfactant compositions for unloading fluids from oil and gas wells |
| 09/11/2009 | WO2006093941A3 Novel device and methods for firing perforating guns |
| 09/11/2009 | CA2717771A1 Fluid distribution system |
| 09/11/2009 | CA2717607A1 Apparatus for the inductive heating of oil sand and heavy oil deposits by way of current-carrying conductors |
| 09/11/2009 | CA2717490A1 On-the-fly acid blender with sampling equipment |
| 09/11/2009 | CA2717073A1 Methods, systems, and compositions for the controlled crosslinking of well servicing fluids |
| 09/11/2009 | CA2717007A1 A method and device for making lateral openings out of a wellbore |
| 09/11/2009 | CA2713354A1 A switching device for, and a method of switching, a downhole tool |
| 09/10/2009 | US20090227480 Angular abrasive proppant, process for the preparation thereof and process for hydraulic fracturing of oil and gas wells |
| 09/10/2009 | US20090223714 Buffer for explosive device |
| 09/10/2009 | US20090223681 Zone isolation assembly for isolating a fluid zone in an existing subsurface well |
| 09/10/2009 | US20090223680 Methods for expanding tubular strings and isolating subterranean zones |
| 09/10/2009 | US20090223678 Heat Generator For Screen Deployment |
| 09/10/2009 | US20090223674 Integrated Electrical Connector For Use In A Wellhead Tree |
| 09/10/2009 | US20090223673 Offshore Riser Retrofitting Method and Apparatus |
| 09/10/2009 | US20090223671 Bore selector |
| 09/10/2009 | US20090223670 Systems, assemblies and processes for controlling tools in a well bore |
| 09/10/2009 | US20090223669 Method and a device for solvent injection in a subsurface well |
| 09/10/2009 | US20090223668 Sympathetic ignition closed packed propellant gas generator |
| 09/10/2009 | US20090223666 Top drive swivel apparatus and method |
| 09/10/2009 | US20090223665 Well treatment using a progressive cavity pump |
| 09/10/2009 | US20090223662 System, method and apparatus for controlling the flow rate of an electrical submersible pump based on fluid density |
| 09/10/2009 | US20090223659 Through tubing gun lock |
| 09/09/2009 | EP2098683A1 Optimization of untreated oil shale geometry to control subsidence |
| 09/09/2009 | EP2098679A1 A method and device for making lateral openings out of a wellbore |
| 09/09/2009 | EP1604093B1 Method and apparatus for drilling a borehole with a borehole liner |
| 09/09/2009 | EP1290780B1 Method for boosting the output voltage of a variable frequency drive |
| 09/09/2009 | CN201306165Y Centrifugal wellhead crude oil sand remover |
| 09/09/2009 | CN201306164Y Gas-liquid separator for wellhead sleeve gas exhaust |
| 09/09/2009 | CN201306163Y Gang control device for butterfly valves of the pipeline of sand mulling truck |
| 09/09/2009 | CN201306162Y Energy-saving environmentally friendly explosive adding device of oil well |
| 09/09/2009 | CN201306161Y A full-automatic flow regulation water distributor |
| 09/09/2009 | CN201306160Y Uranium well gas-liquid mixed injection device |
| 09/09/2009 | CN201306159Y Well perforation composite buffer |
| 09/09/2009 | CN201306158Y Compound perforator canno barrel pressure relief hole blocking film |
| 09/09/2009 | CN201306157Y Pipe column and perforation column for device in a well |
| 09/09/2009 | CN201306156Y Gravity impact production increasing oil pumping unit |
| 09/09/2009 | CN201306155Y Energy-saving device of oil pumping unit |