E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells

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)
12/2004
12/01/2004	CN2660090Y Flexible sucker rod
12/01/2004	CN1177992C Method for thermal producing ultrathick oil by cyclic steam stimulation and special apparatus thereof
11/2004
11/30/2004	US6826482 Computer system to help in selecting well treatment fluid, including sets of fluid families with relevant fluid characteristics and digital ratings, set of job parameters, set of connecting rules matching fluid families and parameters
11/30/2004	US6824847 Expandable and curable flexible preform containing unsaturated resins, for casing a well or a line
11/30/2004	US6824224 Coalbed methane extraction process
11/30/2004	US6823950 Method for formation pressure control while drilling
11/30/2004	US6823944 Apparatus and method for completing a well
11/30/2004	US6823943 Strippable collapsed well liner
11/30/2004	US6823937 Wellhead
11/30/2004	US6823936 Fluid flow control apparatus
11/30/2004	CA2293095C Pack-off bushing
11/30/2004	CA2282899C Adjustable orifice valve
11/30/2004	CA2167486C Coiled tubing composite
11/25/2004	WO2004101955A1 Methods and compositions for placing particulate materials in subterranean zones
11/25/2004	WO2004101954A1 Compositions and methods of using the same to isolate a subterranean zone from a disposal well
11/25/2004	WO2004101945A2 Method for improved vertical sweep of oil reservoirs
11/25/2004	WO2004101706A1 Method for stimulating hydrocarbon production and reducing the production of water from a subterranean formation
11/25/2004	WO2004101473A2 Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes
11/25/2004	WO2004027198A3 Remote intervention logic valving method and apparatus
11/25/2004	WO2004011776B1 Method of forming a mono diameter wellbore casing
11/25/2004	US20040235677 Methods and compositions for stabilizing swelling clays or migrating fines in formations
11/25/2004	US20040235675 Oilfield treatment fluid stabilizer
11/25/2004	US20040235673 Contains chitosan and sodium hypochlorite solution as halogenating agent
11/25/2004	US20040231860 Open hole anchor
11/25/2004	US20040231859 Method, system & apparatus for orienting casing and liners
11/25/2004	US20040231858 System for lining a wellbore casing
11/25/2004	US20040231855 Liner hanger
11/25/2004	US20040231854 Casing wear band and method of attachment
11/25/2004	US20040231853 Method and apparatus to selectively reduce wellbore pressure during pumping operations
11/25/2004	US20040231852 Method and apparatus to selectively reduce wellbore pressure during pumping operations
11/25/2004	US20040231849 Method for hydraulic fracturing with squeeze pressure
11/25/2004	US20040231843 Lubricant for use in a wellbore
11/25/2004	US20040231840 Controlling Transient Pressure Conditions In A Wellbore
11/25/2004	US20040231839 Thread integrity feature for expandable connections
11/25/2004	US20040231838 Slip energized by longitudinal shrinkage
11/25/2004	US20040231548 Perforating gun firing head with vented block for holding detonator
11/25/2004	DE10320402A1 Methane extraction method for diminishing or unstable mountains, involves placing pipes having slots and perforations into bore holes that are drilled into mountain
11/25/2004	DE10320401A1 Methane extraction method involves diverting drilled holes horizontally to cut natural gaps in overlying rocks and form vertical or diagonal artificial cracks
11/25/2004	CA2525629A1 Method for stimulating hydrocarbon production and reducing the production of water from a subterranean formation
11/25/2004	CA2523472A1 Well treating method to prevent or cure lost-circulation
11/24/2004	EP1479959A1 Tubing connector
11/24/2004	EP1479872A1 Thread integrity feature for expandable connections
11/24/2004	EP0852652B1 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access
11/24/2004	CN2658428Y Piston pump for stripper well
11/24/2004	CN2658427Y High-strength oil-well pump
11/24/2004	CN2658426Y Open-assisted valve for oil-well pump
11/24/2004	CN2658425Y Intelligent network system for beam-pumping unit
11/24/2004	CN2658424Y Combination seal type oil-well pump plunger
11/24/2004	CN2658423Y Oil-well pump with double-plunger for steam injection and oil pumping
11/24/2004	CN2658398Y Short procedure polymer dispersing device
11/24/2004	CN2658397Y Eyelet slit extra fine sand control anchor
11/24/2004	CN2658396Y Horizontal linear electric motor beam-pumping unit
11/24/2004	CN2658395Y Gas well throttle reducing transformer
11/24/2004	CN2658394Y Centering oil pumping aid apparatus on sucker rod
11/24/2004	CN2658123Y Mechanical rop winding jib for oil production vehicle
11/24/2004	CN1549885A Method and equipment for raising oil recovery through filling gas
11/24/2004	CN1548701A Fracturing fluid preparing truck used for petroleum mining field and method for preparing fracturing fluid
11/24/2004	CN1177127C Multifunctional oil increasing controlling method and controller
11/23/2004	US6820698 Method of selectively locking a telescoping joint
11/23/2004	US6820696 Petroleum production utilizing a salt cavern
11/23/2004	US6820693 Electromagnetic telemetry actuated firing system for well perforating gun
11/23/2004	US6820691 Cementing tool and method
11/23/2004	US6820690 Technique utilizing an insertion guide within a wellbore
11/23/2004	US6820688 Heat exchanging after pyrolyzation to support synthesis gas generation
11/23/2004	US6820687 Auto reversing expanding roller system
11/23/2004	CA2306016C Method and apparatus for injecting one or more fluids into a borehole
11/23/2004	CA2276973C Tubing head spool and method of using same
11/23/2004	CA2149154C Expendable ebw firing module for detonating perforating gun charges
11/23/2004	CA2132606C Device for a curved conductor pipe for a pull wire
11/23/2004	CA2120187C Pumping device having two suction ports - application to a subhorizontal drain
11/21/2004	CA2467791A1 Oilfield treatment fluid stabilizer
11/18/2004	WO2004099563A1 Plunger enhanced chamber lift for well installations
11/18/2004	WO2004099562A1 Expandable tieback
11/18/2004	WO2004099561A1 Expansion device for expanding a pipe
11/18/2004	WO2004099560A1 Erosion resistant sand screen
11/18/2004	WO2004099551A2 Method and apparatus for penetrating subsurface formations
11/18/2004	WO2004087495A3 Device and method for stabilising and controlling the lowering or raising of a heavy structure between the surface and the bed of the sea
11/18/2004	WO2003042488A3 Deepwater slim hole well construction
11/18/2004	US20040229758 Water block removal wih surfactant based hydrocarbonaceous liquid system
11/18/2004	US20040229757 Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation
11/18/2004	US20040229756 Aqueous solution of a hydrophilic reactive polymer, a hydrophobic compound capable of reacting with the polymer in situ, and a surfactant that promotes the dissolution of the hydrophobic compound; product attaches to well surfaces and reduces water permeability without affecting hydrocarbon permeability
11/18/2004	US20040228679 Solid expandable tubular members formed from very low carbon steel and method
11/18/2004	US20040226723 Procedures and equipment for profiling and jointing of pipes
11/18/2004	US20040226719 Method for making a well for removing fluid from a desired subterranean formation
11/18/2004	US20040226717 Sealant compositions and methods of using the same to isolate a subterranean zone from a disposal well
11/18/2004	US20040226716 Methods and compositions for placing particulate materials in subterranean zones
11/18/2004	US20040226715 Mapping fracture dimensions
11/18/2004	US20040226713 Plunger for gas wells
11/18/2004	US20040226616 Discharge valve
11/18/2004	CA2524509A1 Method and apparatus for penetrating subsurface formations
11/17/2004	EP1476638A2 Extend of detonation determination method using seismic energy
11/17/2004	CN2656634Y New type hollow water distribution apparatus
11/17/2004	CN2656633Y Lateral drilling small well hole deep penetration guiding head gun perforation apparatus
11/17/2004	CN2656632Y Horizontal well gun perforation explosion hydraulic delay timer
11/17/2004	CN2656631Y Beam type oil pumping machine high efficiency energy saving device
11/17/2004	CN2656630Y Variable frequency hydraulic oil pumping machine using energy accumulator counter weight
11/17/2004	CN2656629Y Composite oil extraction rod suspension rope device
11/17/2004	CN2656628Y Oil pumping machine concrete counter weight
11/17/2004	CN2656627Y Oil pumping machine filling heavy matter counter weight body
11/17/2004	CN2656626Y Under well screw pump oil pumping device

1 ... 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 ... 642