| 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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| 09/23/1997 | US5669734 Process for making underground storage caverns |
| 09/23/1997 | US5669448 Overbalance perforating and stimulation method for wells |
| 09/23/1997 | US5669445 Well gravel pack formation method |
| 09/23/1997 | US5669444 Injecting aqueous oxidant solution; increased methane production |
| 09/23/1997 | CA2133907C Downhole progressing cavity pump rotor valve |
| 09/23/1997 | CA2129613C High proppant concentration/high co2 ratio fracturing system |
| 09/22/1997 | CA2172298A1 Ultra lightweight perforation ball sealers |
| 09/20/1997 | CA2200415A1 A casing and method of installing the casing in a well |
| 09/18/1997 | WO1997034074A1 Underwater installation and method for building of an underwater installation |
| 09/18/1997 | WO1997034073A1 A water compatible chemical in situ sand consolidation with furan resin |
| 09/17/1997 | EP0795679A2 Method and apparatus for establishing branch wells at a node of a parent well |
| 09/17/1997 | EP0795648A2 Offshore production platform |
| 09/16/1997 | US5667369 Volumetric pump driven by a continuous tube |
| 09/16/1997 | US5667364 Downhole hydraulic pump apparatus having a "free" jet pump and safety valve assembly and method |
| 09/16/1997 | US5667023 Method and apparatus for drilling and completing wells |
| 09/16/1997 | US5667014 Self-removing choke insert system |
| 09/16/1997 | US5667012 Method and apparatus for the addition of low-bulk-density fibers to a fluid |
| 09/16/1997 | US5667011 Formed in an underground formation |
| 09/12/1997 | WO1997033070A2 Downhole flow stimulation in a natural gas well |
| 09/12/1997 | WO1997033069A2 Downhole apparatus |
| 09/12/1997 | WO1997033068A1 Method and well tool for gravel packing a well using low-viscosity fluids |
| 09/12/1997 | WO1997032648A1 Radial-flow filter and method of manufacture |
| 09/12/1997 | WO1997017526A3 Downhole assembly for installing an expandable tubing |
| 09/12/1997 | CA2246658A1 Downhole apparatus |
| 09/10/1997 | EP0794163A1 Shaped charge containing triaminotrinitrobenzene |
| 09/10/1997 | EP0793989A1 Radial-flow filter and method of manufacture |
| 09/09/1997 | US5664628 Filter for subterranean wells |
| 09/09/1997 | CA2188098A1 Control of particulate flowback in subterranean wells |
| 09/07/1997 | CA2171155A1 Underground fluid sampling apparatus |
| 09/03/1997 | EP0792700A2 Apparatus and methods for removing contaminants |
| 09/03/1997 | EP0792409A1 Filter for subterranean wells |
| 09/03/1997 | CN2261508Y Automatic centralizing rope hanger |
| 09/03/1997 | CN1158382A Universal perforating gun firing head |
| 09/02/1997 | USH1675 Hybrid capsule charge |
| 09/02/1997 | US5662178 Wave strip perforating system |
| 09/02/1997 | US5662170 Method of drilling and completing wells |
| 09/02/1997 | US5662167 Oil production and desanding method and apparatus |
| 09/02/1997 | US5662165 Production wells having permanent downhole formation evaluation sensors |
| 08/28/1997 | WO1997020130A3 Downhole apparatus and method for expanding a tubing |
| 08/28/1997 | DE19606379A1 In-situ cleaning method for contaminated soils |
| 08/27/1997 | EP0791723A1 Apparatus and method for sampling an earth formation through a cased borehole |
| 08/27/1997 | CN2260890Y Electric sterilizing device for oil-field back-injected waste water |
| 08/27/1997 | CN2260888Y Gas-liquid controller for disk-type braking |
| 08/27/1997 | CN1157758A Planetary degritting machine |
| 08/26/1997 | US5660520 Downhole centrifugal pump |
| 08/26/1997 | US5660232 Liner valve with externally mounted perforation charges |
| 08/26/1997 | US5660231 Using elastic vibrations |
| 08/21/1997 | WO1997030268A1 Subsea raw water injection facility |
| 08/21/1997 | WO1997030267A1 System for producing high density, extra large well perforations |
| 08/21/1997 | WO1997030265A1 Offshore production piping and method for laying same |
| 08/21/1997 | WO1997017527A3 Downhole setting tool for an expandable tubing |
| 08/20/1997 | EP0790388A2 Device to prevent fluid loss |
| 08/20/1997 | EP0536256B1 Radially deformable tube consisting of several releasably connected sections |
| 08/20/1997 | CN2260168Y Petroleum perforation device with ring-like ignition struction |
| 08/19/1997 | US5657821 Facility for an oil well |
| 08/14/1997 | WO1997021901A3 Tubing connector |
| 08/14/1997 | CA2174879A1 Iterated electrodes for oil wells |
| 08/13/1997 | EP0789131A2 Downhole abrasive slurry delivery apparatus |
| 08/13/1997 | EP0644979A4 Method and apparatus for inspecting subsurface environments. |
| 08/13/1997 | CN2259485Y Stainless steel blanket petroleum sand control screen |
| 08/13/1997 | CN1156785A Method for extracting coal bed gas |
| 08/13/1997 | CA2197404A1 Fluid loss device |
| 08/12/1997 | US5656176 Allowing subterranean fluid to flow through interstices of porous matrix bonded to perforated base pipe placed in well bore while restricting passage of solid particles |
| 08/12/1997 | US5655895 Turbopump for conveying highly viscous substances |
| 08/12/1997 | US5655852 High vacuum extraction of soil contaminants along preferential flow paths |
| 08/12/1997 | US5655605 Method and apparatus for producing and drilling a well |
| 08/12/1997 | US5655604 Down-hole, production pump and circulation system |
| 08/12/1997 | US5655602 Apparatus and process for drilling and completing multiple wells |
| 08/09/1997 | CA2169126A1 Fluid storage tank with a spill containment system |
| 08/07/1997 | WO1997028352A1 Small hole retrievable perforating system for use during extreme overbalanced perforating |
| 08/07/1997 | WO1997028351A1 Method and equipment for the flow of offshore oil production with primary gas separation |
| 08/07/1997 | WO1997028350A1 Method and equipment for the flow of offshore oil production |
| 08/07/1997 | CA2240363A1 Method and equipment for the flow of offshore oil production with primary gas separation |
| 08/07/1997 | CA2240126A1 Method and equipment for the flow of offshore oil production |
| 08/06/1997 | EP0787889A2 Method and apparatus for perforating a well |
| 08/06/1997 | EP0787687A2 Device for the purification of ground water, by stripping with a gas, particularly air |
| 08/06/1997 | EP0640001B1 Linear contaminant remediation process |
| 08/06/1997 | CN2258913Y Strong magnetic jet oscillation device for stimulation of injection well |
| 08/05/1997 | US5654504 In a well |
| 08/05/1997 | US5654502 Automatic well test system and method of operating the same |
| 08/05/1997 | US5653288 For laterally dispersing substances outward from an injection well |
| 08/05/1997 | US5653287 Placing low thermal conductivity tubing in cased well bore, providing heat transfer barrier between casing and tubing, injecting liquid nitrogen through tubing to contact face of well bore, flowing gas down annulus between casing and tubing |
| 08/05/1997 | US5653286 Downhole gas separator |
| 07/30/1997 | EP0786578A2 Flow segregator for multi-drain well completion |
| 07/30/1997 | EP0786577A2 Sand control screen assembly having an adjustable flow rate and associated methods of completing a subterranean well |
| 07/30/1997 | CN1155613A Method of nozzling while drilling with controllable negative pressure and apparatus thereof |
| 07/30/1997 | CN1035524C Caisson and foundation combination type oil extracting platform and construction method |
| 07/30/1997 | CN1035517C Process for preparing crushing liquid containing carboxyalkyl hydroxylalkyl cellulose |
| 07/29/1997 | US5651708 Arrangement for buoy loading |
| 07/29/1997 | US5651664 "Free" coil tubing downhole jet pump apparatus and method |
| 07/26/1997 | CA2195896A1 Downhole production well instrumentation |
| 07/25/1997 | CA2195712A1 Sand control screen assembly having an adjustable flow rate and associated methods of completing a subterranean well |
| 07/24/1997 | WO1997026442A1 Method for measuring of flow and flowmeter |
| 07/24/1997 | DE19616578C1 Drive head for rotary driven rod linkage for borehole pump |
| 07/23/1997 | EP0785337A2 Proppant containment apparatus and methods of using same |
| 07/23/1997 | EP0676530A4 Method of extracting gas from fluid-bearing strata. |
| 07/23/1997 | CA2194417A1 Running liners with coiled tubing |
| 07/17/1997 | WO1997025754A1 Wide-banded base station antenna |
| 07/17/1997 | WO1997025561A2 Subsea flexible pipe |
| 07/17/1997 | WO1997025518A2 Apparatus for setting a liner in a well casing |