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)
12/1988
12/13/1988	CA1246438A1 Hydraulic fracturing and gravel packing method employing special sand control technique
12/13/1988	CA1246332A1 Process for preparing pre-cured proppant charge
12/07/1988	CN88100284A Drum-type long stroke oil sucking machine
12/07/1988	CN87214265U Energy-saving and production-increasing streamline nozzle device
12/06/1988	US4789970 Method and device for positioning an element using ultrasonic sensors
12/06/1988	US4789031 Copper, zinc, nickel, lead and tin alloy; corrosion resistance, antiscaling
12/06/1988	US4789030 Hydrodesulfurization with cobalt (molybdenum) catalyst after separation of gaseous hydrocarbon fraction
12/06/1988	US4788848 Chemical tracer determination of steam quality
12/06/1988	CA1245978A1 Producing sour natural gas
12/06/1988	CA1245845A1 Enhanced hydrocarbon recovery by permeability modification with phenolic gels
11/1988
11/30/1988	EP0293251A2 Modular template for drilling subsea wells, and method of installing such a template
11/30/1988	EP0292548A1 Improvements relating to installation of downhole pumps in wells.
11/30/1988	CN88203697U Distance-increased type hydraulic beam-pumping unit
11/30/1988	CN88202297U Variable-speed controller for beam-pumping unit
11/29/1988	US4788467 Downhole oil well vibrating system
11/29/1988	US4787452 Injection of aqueous saline slurry incrementally
11/29/1988	US4787450 Gas lift process for restoring flow in depleted geothermal reservoirs
11/29/1988	US4787449 Injection of pressurized plugging agent initiates and/or propagates fractures; then displacing fluid
11/29/1988	CA1245742A1 Well production controller system
11/29/1988	CA1245435A1 Method for controlled introduction of reagent into a liquid
11/23/1988	CN87103481A Long stroke beam-pumping unit with chain without sliding beam
11/22/1988	US4785886 Method of producing a fluid contained in a geological formation comprising several fluids
11/22/1988	US4785884 Consolidation of partially cured resin coated particulate material
11/22/1988	US4785882 From a subterranean reservoir
11/22/1988	US4785880 Apparatus for dispensing chemicals into oil and gas wells
11/22/1988	US4785853 Conduct pipe covered with electrically insulating material
11/22/1988	US4785852 Conduct pipe covered with electrically insulating material
11/17/1988	WO1988008807A1 Arrangement in connection with a submerged storage tank
11/17/1988	WO1988008806A1 Arrangements for production, storing and transferring of hydrocarbon at sea
11/17/1988	EP0291182A2 Aminoalkylated polyacrylamide aldehyde gels, their preparation and use in oil recovery
11/17/1988	EP0291143A2 Subsea riser for multiple bore wells
11/16/1988	CN87215651U Well-killing prevention switch for oil-pumping well
11/15/1988	US4784527 Modular drilling template for drilling subsea wells
11/15/1988	US4784523 Method and apparatus for remotely orienting a flowline for connection to a subsea structure
11/15/1988	US4784224 Casing guide for well template
11/15/1988	US4784221 Wellpoint system and reel
11/15/1988	US4784061 Capsule charge locking device
11/15/1988	US4783995 Logging tool
11/09/1988	EP0290114A2 Tubing packer
11/09/1988	EP0290067A2 Flowline connector
11/09/1988	EP0289950A2 Polyalkyleneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur
11/09/1988	CN88210116U Increasing stroke, power-saving beam pumping unit
11/09/1988	CN88102408A Improved hydraulia well penetration apparatus and method
11/08/1988	US4783585 Downhole electric steam or hot water generator for oil wells
11/08/1988	US4782901 Complexing polysaccharide with metal compound; injection into formation
11/08/1988	US4782900 Using glutaraldehyde or glyoxal crosslinkers; reducing water encroachment
11/08/1988	US4782898 Injecting solution of carbonate salt, an acid generating and a radioactive material; displacing solution; chromatographic separation
11/08/1988	US4782897 Multiple indexing J-slot for model E SRO valve
11/08/1988	US4782896 Retrievable fluid flow control nozzle system for wells
11/08/1988	US4782847 Flow control apparatus and method
11/02/1988	EP0289103A2 Pipe connector and method of applying same
11/02/1988	CN88203461U Left and right eccentric blocks for improving energy-saving reformation of oil pump
11/02/1988	CN88201568U Chain type reciprocating oil pump
11/02/1988	CN88100379A Method for treating subterranean formations
11/02/1988	CN87216845U Undamped self-pressurization thick oil pump
11/02/1988	CN87210524U Pulley type oil-pumping unit
11/01/1988	US4781536 Low-flow pump-off control
10/1988
10/26/1988	EP0288239A2 Perforating gun firing tool
10/26/1988	EP0288238A2 Method and apparatus for perforating well bores
10/26/1988	EP0288237A2 Method and apparatus for perforating a gun
10/26/1988	EP0288106A2 Foamed slurry generator
10/26/1988	EP0287727A1 Groundwater pollution abatement
10/25/1988	US4780243 Dry sand foam generator
10/25/1988	US4779682 Method for the grit-free withdrawal of water from a well and also a device suitable therefor
10/25/1988	US4779681 Packer for oil or gas well with lateral passage therethrough and method of fracturing well
10/25/1988	US4779677 Oil well fluid processing system
10/20/1988	DE3710775A1 Process and apparatus for delivering water from bore wells
10/19/1988	EP0286761A1 Enzymatic process for the treatment of xanthane gums for improving the filter ability of their aqueous solutions
10/19/1988	CN88202313U Rotationary distance-incressing type long stroke beam-pumping unit
10/18/1988	US4778970 Viscosity reduction apparatus using microwave energy
10/18/1988	US4778010 Process for injection of oxidant and liquid into a well
10/18/1988	US4778009 Shock actuated switch for perforating gun assembly
10/18/1988	US4778007 Having horizontal drainhole bores in well
10/18/1988	US4778006 Process for removing carbonate from wells
10/18/1988	US4777878 Exploding bridge wire detonator with shock reflector for oil well usage
10/12/1988	EP0286152A1 Matrix treatment process for oil extraction applications
10/12/1988	CN87102571A Bore screen
10/11/1988	US4776638 Using probes; spraying air, steam, electrolytes, catalysts; electric arcs
10/11/1988	US4776393 Perforating gun automatic release mechanism
10/11/1988	CA1242970A1 Metal-to-metal seal casing hanger
10/11/1988	CA1242894A1 Arrangement including remotely releasable connections
10/05/1988	EP0284780A2 Production tubing string for deep wells
10/04/1988	CA1242576A1 Method of recovering hydrocarbons from an underground formation
10/04/1988	CA1242575A1 Aqueous petroleum sulphonate surfactant systems containing phenylethersulphonate cosurfactants
09/1988
09/29/1988	DE3805200C1 Arrangement for expelling readily volatile impurities from groundwater
09/27/1988	USRE32755 Accelerated downhole pressure testing
09/27/1988	US4774427 Downhole oil well vibrating system
09/27/1988	US4773488 Development well drilling
09/27/1988	US4773483 Method for selectively plugging subterranean formations with polysulfides
09/27/1988	US4773477 For connecting to an inner/outer tubular member to/from each other
09/27/1988	US4773299 Well perforating apparatus and method
09/27/1988	CA1242389A1 Method for stimulation of wells with carbon dioxide or nitrogen based fluids containing high proppant concentration
09/22/1988	WO1988007136A1 Drive assembly with overspeed brake
09/21/1988	EP0283344A1 Process for the selective reduction of water present in oil or gas producing wells
09/21/1988	CN88203046U Oil-pumping machine with stroke length increased by gears
09/21/1988	CN88200316U Plunger type high-pressure high-efficiency well drilling slush pump
09/21/1988	CN87216479U Eccentric oil-pumping well head equipment
09/20/1988	US4771829 Well liner with selective isolation screen
09/20/1988	US4771827 Automatic drop-off device for perforating guns
09/20/1988	CA1242139A1 Foam and impedance-guided steam injection

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