| 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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| 04/09/2008 | CN101158280A Oil well high water-bearing layer pressure blocking method |
| 04/09/2008 | CN101158279A Novel SAGD process thermal recovery well head device |
| 04/09/2008 | CN101158278A Novel thermal recovery well head device |
| 04/09/2008 | CN101158267A Method and system for accessing subterranean deposits from the surface |
| 04/09/2008 | CN101158043A Method for synthesizing mannich alkali steel inhibitor mother liquor and steel inhibitor mother liquor |
| 04/09/2008 | CN101156999A A method for preparing oil field sand prevention filter as well as sullage filter |
| 04/09/2008 | CN100379938C Well drilling and water dissolving process for sodium sulfate hydrate |
| 04/09/2008 | CN100379937C Device for harnessing bittern burst of brine well by blasting |
| 04/08/2008 | US7354886 Pumpable multiple phase compositions for controlled release applications downhole |
| 04/08/2008 | US7353887 Control systems and methods for active controlled bottomhole pressure systems |
| 04/08/2008 | US7353879 Biodegradable downhole tools |
| 04/08/2008 | US7353878 Apparatus and method for wellbore isolation |
| 04/08/2008 | US7353877 Accessing subterranean resources by formation collapse |
| 04/08/2008 | US7353876 Self-degrading cement compositions and methods of using self-degrading cement compositions in subterranean formations |
| 04/08/2008 | US7353875 Centrifugal blending system |
| 04/08/2008 | US7353874 Method for servicing a well bore using a mixing control system |
| 04/08/2008 | US7353872 Start-up of temperature limited heaters using direct current (DC) |
| 04/08/2008 | US7353871 Downhole automatic tool release and method of use |
| 04/08/2008 | US7353868 Wireline coupler |
| 04/08/2008 | US7353866 Stimulation tool having a sealed ignition system |
| 04/08/2008 | CA2534307C Fracturing isolation sleeve |
| 04/08/2008 | CA2517410C Automated chemical stick loader for gas wells and method of loading |
| 04/08/2008 | CA2474064C Gas operated pump for hydrocarbon wells |
| 04/03/2008 | WO2008039727A2 Method for wellbore servicing to enhance the mechanical strength of cement using electrochemically activated water |
| 04/03/2008 | WO2008037981A1 Methods of fracturing a subterranean formation using a jetting tool and a viscoelastic surfactant fluid to minimize formation damage |
| 04/03/2008 | WO2008037730A1 Method and assembly for producing oil and/or gas through a well traversing stacked oil and/or gas bearing earth layers |
| 04/03/2008 | WO2008015632A3 Technique and apparatus for drilling and completing a well in one half trip |
| 04/03/2008 | WO2008004172A3 Rheology controlled heterogeneous particle placement in hydraulic fracturing |
| 04/03/2008 | WO2007147050A3 Combined electromagnetic thermal system for natural gas and oil recovery and environmental applications |
| 04/03/2008 | US20080078585 Drainage pipe |
| 04/03/2008 | US20080078552 Method of heating hydrocarbons |
| 04/03/2008 | US20080078551 Liquid Metal Heat Exchanger for Efficient Heating of Soils and Geologic Formations |
| 04/03/2008 | US20080078549 Methods and Compositions Relating to the Control of the Rates of Acid-Generating Compounds in Acidizing Operations |
| 04/03/2008 | US20080078548 Methods of fracturing a subterranean formation using a jetting tool and a viscoelastic surfactant fluid to minimize formation damage |
| 04/03/2008 | US20080078547 Proppants with soluble composite coatings |
| 04/03/2008 | US20080078546 Surfactant-based fluid loss control agents for surfactant gels and associated fluids and methods |
| 04/03/2008 | US20080078545 Nonacetylated and depyruvylated xanthan; water, salt, a pH control additive, a surfactant, a breaker, a bactericide, a crosslinker, a fluid loss control agent, a stabilizer, a chelant, a scale inhibitor, gases, mutual solvents, fibers, proppant, corrosion inhibitors, acids, bases, oxidizers, reducers |
| 04/03/2008 | US20080078543 Methods of Quantifying Gas Content of a Gas-Sorbed Formation Solid |
| 04/03/2008 | CA2664117A1 Method and assembly for producing oil and/or gas through a well traversing stacked oil and/or gas bearing earth layers |
| 04/03/2008 | CA2662717A1 Method of forming a high friction joint |
| 04/03/2008 | CA2662306A1 Methods of fracturing a subterranean formation using a jetting tool and a viscoelastic surfactant fluid to minimize formation damage |
| 04/02/2008 | EP1905946A1 Well productivity enhancement method |
| 04/02/2008 | EP1904714A2 Method and installation for connecting a rigid submarine pipeline and a flexible submarine pipeline |
| 04/02/2008 | EP1904601A2 Thermoset particles with enhanced crosslinking, processing for their production, and their use in oil and natural gas drilling applications |
| 04/02/2008 | EP1711684B1 Method for extracting a mine gas in areas which are not directly influenced by mining |
| 04/02/2008 | CN201043587Y Connecting structure for steel wire rope and wiring sleeve of oil pumping machine polished rod eye |
| 04/02/2008 | CN201043562Y Brake device of oil pumping machine |
| 04/02/2008 | CN201043518Y Connecting structure for mule head and balance beam of oil pumping machine |
| 04/02/2008 | CN201043462Y Casting and dragging combined head for separate injection well test |
| 04/02/2008 | CN201043460Y Air-assistant microorganism-driving ground automatic filling device |
| 04/02/2008 | CN201043459Y Perforating tool intermediate joint with full-reducing ball centralizer |
| 04/02/2008 | CN201043458Y Simplified intermediate joint of ball bearing centering perforating tool |
| 04/02/2008 | CN201043457Y Perforating bullet suitable for portable sand-preventing perforating tool |
| 04/02/2008 | CN201043456Y Lever-balancing crown sheave type long stroke well pumping unit |
| 04/02/2008 | CN201043455Y Unloading frame of oil pumping machine |
| 04/02/2008 | CN101155972A Sound source for stimulation of oil reservoirs |
| 04/02/2008 | CN100379143C Inverter controller and oil extraction machine having the same |
| 04/02/2008 | CN100378333C Vertical oil pumping unit balancing mechanism fast braking device |
| 04/02/2008 | CN100378291C Periodic speed-changing driving energy-saving method for oil-pumping machine |
| 04/02/2008 | CN100378213C Biodemulsifier, its preparation method and application |
| 04/02/2008 | CA2604530A1 Motor seal |
| 04/01/2008 | US7350588 Method and apparatus for supporting a tubular in a bore |
| 04/01/2008 | US7350585 Hydraulically assisted tubing expansion |
| 04/01/2008 | US7350584 Formed tubulars |
| 04/01/2008 | US7350581 Vapor recovery system |
| 04/01/2008 | US7350579 Pumping a fracturing fluid including an acidifying agent and a surface modifying agent into a producing formation to enhance productivity at a pressure sufficient to fracture the formation and simultaneously to modify aggregation potential and zeta-potential of formation particles and formation surfaces |
| 04/01/2008 | US7350578 Diverter plugs for use in well bores and associated methods of use |
| 04/01/2008 | US7350577 Method and apparatus for injecting steam into a geological formation |
| 04/01/2008 | US7350572 Methods for controlling fluid loss |
| 04/01/2008 | US7350571 Methods of preparing and using coated particulates |
| 04/01/2008 | US7350567 Increasing media permeability with acoustic vibrations |
| 04/01/2008 | US7350566 Well completion with merged influx of well fluids |
| 04/01/2008 | US7350564 Mono-diameter wellbore casing |
| 04/01/2008 | US7350563 System for lining a wellbore casing |
| 04/01/2008 | US7350448 Perforating apparatus, firing assembly, and method |
| 04/01/2008 | CA2468731C Internally oriented perforating system |
| 04/01/2008 | CA2436698C Thru-tubing stackagle perforating gun system and method for use |
| 04/01/2008 | CA2425481C Methods for dewatering shaly subterranean formations |
| 04/01/2008 | CA2328199C Foldable tube |
| 04/01/2008 | CA2273668C Inductor for a submersible pumping system |
| 03/29/2008 | CA2642078A1 Method of heating hydrocarbons |
| 03/27/2008 | WO2008036982A1 System and method for performing oilfield simulation operations |
| 03/27/2008 | WO2008036812A2 Nano-sized particles for stabilizing viscoelastic surfactant fluids |
| 03/27/2008 | WO2008036553A2 Gravel pack apparatus that includes a swellable element |
| 03/27/2008 | WO2008035194A2 A method and an apparatus for cold start of a subsea production system |
| 03/27/2008 | WO2008014356A3 Apparatus, system, and method for in-situ extraction of hydrocarbons |
| 03/27/2008 | WO2008002850A3 Method of removing a device in an annulus |
| 03/27/2008 | WO2007149622A3 Sulfur barrier for use with in situ processes for treating formations |
| 03/27/2008 | WO2007137088A3 Field application of polymer-based electrical insulation |
| 03/27/2008 | WO2007017355A8 Pipe expander |
| 03/27/2008 | WO1999057417A3 Chemical actuation system for downhole tools and method for detecting failure of an inflatable element |
| 03/27/2008 | US20080073087 Ventilation of underground porosity storage reservoirs |
| 03/27/2008 | US20080073083 Hydraulics; pelletization; pyroxine, olivine, and feldspar/quartz; heat resistance |
| 03/27/2008 | US20080073082 Well productivity enhancement methods |
| 03/27/2008 | US20080073080 Washpipeless frac pack system |
| 03/27/2008 | US20080073079 Stimulation and recovery of heavy hydrocarbon fluids |
| 03/27/2008 | CA2663726A1 Polymers and nanoparticles formulations with shear-thickening and shear-gelling properties for oilfield applications |
| 03/27/2008 | CA2662210A1 Internal breaker for oilfield treatments |
| 03/26/2008 | EP1203177B1 Expandable joint connector |
| 03/26/2008 | CN201041149Y Balance beam pumping unit locking pin device |