| 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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| 03/19/2009 | US20090071361 Injection molded shaped charge liner |
| 03/19/2009 | CA2712596A1 Pressure compensator for drill bit |
| 03/19/2009 | CA2699503A1 Method of using pressure signatures to predict injection well anomalies |
| 03/19/2009 | CA2698948A1 Multi-function indicating tool |
| 03/18/2009 | EP2035656A1 Method for sealing the walls of deep drilled hole |
| 03/18/2009 | EP1583810B1 Self-generating foamed drilling fluids |
| 03/18/2009 | CN201209437Y Rod oil pumping system medicine feeder |
| 03/18/2009 | CN201209436Y Directional flow packer |
| 03/18/2009 | CN201209435Y Intermediate joint of perforation gun |
| 03/18/2009 | CN201209434Y High hole density high-efficiency perforator for oil and gas well |
| 03/18/2009 | CN201209433Y Disk sheet type sand prevention tube |
| 03/18/2009 | CN201209432Y V-shaped groove splice ring sand prevention tube |
| 03/18/2009 | CN201209431Y Oil well big-diameter hydraulic unloading deep pumping device |
| 03/18/2009 | CN201209426Y Layered acidizing switch |
| 03/18/2009 | CN201209424Y Flow control valve |
| 03/18/2009 | CN201209421Y Packer for water injection well |
| 03/18/2009 | CN201209417Y Concentric double tube zonal injection wellhead device |
| 03/18/2009 | CN201209110Y Plateau belting pumping unit shifting apparatus |
| 03/18/2009 | CN101387288A High energy-conserving and low energy consumption hydraulic pumping unit |
| 03/18/2009 | CN101387195A Reverse-branch Hole gravity oil drainage extraction technology |
| 03/18/2009 | CN101387194A Anchoring string for oil production string of hydraulic screw pump |
| 03/18/2009 | CN101387193A Oil and gas well cementation and completion method |
| 03/18/2009 | CN101387192A Swinging dynamic balancing synergistic energy-saving oil pumping machine |
| 03/17/2009 | US7505244 Micro-switches for downhole use |
| 03/17/2009 | US7504752 Electric motors for powering downhole tools |
| 03/17/2009 | US7503407 Impact excavation system and method |
| 03/17/2009 | US7503404 Methods of well stimulation during drilling operations |
| 03/17/2009 | US7503393 Lubrication system for radially expanding tubular members |
| 03/17/2009 | US7503391 Tieback connector |
| 03/17/2009 | US7503389 Method and apparatus for downhole artificial lift system protection |
| 03/17/2009 | US7503386 Slip on screen with expanded base pipe |
| 03/17/2009 | US7503384 Multiple port cross-over design for frac-pack erosion mitigation |
| 03/17/2009 | CA2639557A1 A system for completing water injector wells |
| 03/17/2009 | CA2639556A1 A system for completing water injector wells |
| 03/17/2009 | CA2577687C Solar blackbody waveguide for solar assisted oil recovery applications |
| 03/17/2009 | CA2247495C Chemically induced stimulation of cleat formation in a subterranean coal formation |
| 03/12/2009 | WO2009032937A2 Method and system for increasing production of a reservoir |
| 03/12/2009 | WO2009032589A2 Downhole tubular seal system and method |
| 03/12/2009 | WO2009032517A1 Drill in sand control liner |
| 03/12/2009 | WO2009032220A1 Artificial neural network models for determining relative permeability of hydrocarbon reservoirs |
| 03/12/2009 | WO2009032217A2 Enzyme enhanced oil/gas recovery (eeor/eegr) using non-gel hydraulic fracturing in hydrocarbon producing wells |
| 03/12/2009 | WO2009030868A2 Drilling fluid containing carbon nanotubes |
| 03/12/2009 | WO2009030756A2 Method for prediction in an oil/gas production system |
| 03/12/2009 | WO2009009437A3 Detecting acoustic signals from a well system |
| 03/12/2009 | WO2009009336A3 Producing resources using heated fluid injection |
| 03/12/2009 | WO2009001069A3 Permeability modification |
| 03/12/2009 | WO2008144249A4 Expandable centralizer for expandable pipe string |
| 03/12/2009 | WO2008137447A4 A method and apparatus for subterranean fracturing |
| 03/12/2009 | WO2008122901A3 Use of a chopper mechanism to add fibers to a well |
| 03/12/2009 | WO2007100956A3 Initiation and propagation control of vertical hydraulic fractures in unconsolidated and weakly cemented sediments |
| 03/12/2009 | WO2005056724A3 Method and device for separating mixtures of solid components and liquid or liquefiable hydrocarbons |
| 03/12/2009 | US20090068024 Progressing cavity pump with heat management system |
| 03/12/2009 | US20090065219 Method and a device for setting a casing |
| 03/12/2009 | US20090065215 Fluid injection device |
| 03/12/2009 | US20090065214 Apparatus for controlling a downhole device |
| 03/12/2009 | US20090065213 Downhole valve assembly, actuation device for a downhole valve assembly and method of controlling fluid flow downhole |
| 03/12/2009 | US20090065211 In situ conversion of subsurface hydrocarbon deposits to synthesis gas |
| 03/12/2009 | US20090065210 Method for gas production from gas hydrate reservoirs |
| 03/12/2009 | US20090065208 Composition and Method For Making A Proppant |
| 03/12/2009 | US20090065207 Well Treatment To Inhibit Fines Migration |
| 03/12/2009 | US20090065206 Wellbore fluid treatment tubular and method |
| 03/12/2009 | US20090065205 Methods for recovering oil from an oil reservoir |
| 03/12/2009 | US20090065204 Methods for recovering oil from an oil reservoire |
| 03/12/2009 | US20090065203 Flooding the reservoir with water and a nonpolymeric, viscoelastic amphoteric surfactant, particuarly an internal salt of an aliphatic tertiaryl aminoalkanoic acid; pushing oil through the reservoir to a wellbore; and extracting the oil through the wellbore; much lower interefacial surface tension |
| 03/12/2009 | US20090065202 Gas separator within esp shroud |
| 03/12/2009 | US20090065201 Methods of formulating drilling cements using processed waste waters |
| 03/12/2009 | US20090065197 Enhancing well fluid recovery |
| 03/12/2009 | CA2698335A1 Method and system for increasing production of a reservoir |
| 03/12/2009 | CA2698333A1 Method and system for increasing production of a reservoir using lateral wells |
| 03/12/2009 | CA2698226A1 Drilling fluid containing carbon nanotubes |
| 03/12/2009 | CA2696917A1 Drill in sand control liner |
| 03/11/2009 | EP2034130A2 Method of updating a geological model with the aid of dynamic data and well testing |
| 03/11/2009 | EP2032796A1 Compressible objects having a predetermined internal pressure combined with a drilling to form a variable density drilling mud |
| 03/11/2009 | CN201207632Y Multi-speed controller for oil pumping machine |
| 03/11/2009 | CN201206460Y Straight-push beam-pumping unit operating along arc line |
| 03/11/2009 | CN201206444Y Composite tubing for plugging and acidizing construction downhole |
| 03/11/2009 | CN101384794A Tracer method and apparatus |
| 03/11/2009 | CN101384793A Pressure monitoring of control lines for tool position feedback |
| 03/11/2009 | CN101384372A In-line separator |
| 03/11/2009 | CN101382066A Water-bearing coal seam water control igniter |
| 03/11/2009 | CN101382065A No-shaft underground gasification process |
| 03/11/2009 | CN101382064A Underground forced oxidation and ignition technology for coal |
| 03/11/2009 | CN101382063A Novel underground coal gasification furnace |
| 03/11/2009 | CN101382062A Lane control gas supply side line underground gasification furnace |
| 03/11/2009 | CN101382061A Novel coalbed gas thermal recovery process |
| 03/11/2009 | CN101382060A Shaped charge for acidizing treatment |
| 03/11/2009 | CN101382059A Rotary foundation support arm crank bidirectional balancing double-well pumping unit |
| 03/11/2009 | CN101382058A Regulate for sustained center of common beam type double-well pumping unit |
| 03/11/2009 | CN101382057A Non-beam single-frame direct drive type head-sheave double-well pumping-unit |
| 03/11/2009 | CN101382051A Hollow stem water-mixed wellhead device |
| 03/11/2009 | CN100467826C Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir |
| 03/10/2009 | USRE40648 System and method for downhole operation using pressure activated valve and sliding sleeve |
| 03/10/2009 | US7501065 Methods for treating agricultural drainage water and the like |
| 03/10/2009 | US7500528 Low temperature barrier wellbores formed using water flushing |
| 03/10/2009 | US7500525 Gas well de-watering apparatus and method |
| 03/10/2009 | US7500522 Fluid with asphaltene control |
| 03/10/2009 | US7500521 Methods of enhancing uniform placement of a resin in a subterranean formation |
| 03/10/2009 | US7500519 Methods of modifying fracture faces and other surfaces in subterranean formations |
| 03/10/2009 | US7500518 Top drive swivel apparatus and method |
| 03/10/2009 | US7500517 Kerogen extraction from subterranean oil shale resources |