| 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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| 03/04/1992 | CN1015729B Test technology for thermally cyclic parallel-pipe oil extraction |
| 03/04/1992 | CN1015728B Two-stage balance bar beam-punping unit |
| 03/03/1992 | US5093811 Fracture investigation by resonance sweeping technique |
| 03/03/1992 | US5093020 Catalyzed chelation |
| 03/03/1992 | US5092988 System for monitoring injection water quality using filtration, pressure regulation and mass measuring |
| 03/03/1992 | US5092711 Diverless installation of riser clamps onto fixed or compliant offshore platforms |
| 03/03/1992 | US5092405 Alkoxylated surfactant system for heavy oil reservoirs |
| 03/03/1992 | US5092159 Method and apparatus utilizing a single nozzle for effecting measurment of steam characteristics |
| 03/03/1992 | CA1296619C Oil production facility of modular design for underwater station |
| 03/03/1992 | CA1296618C Methods for monitoring temperature-vs-depth characteristics in a borehole |
| 03/03/1992 | CA1296605C Single well test for evaluating co _injection |
| 02/26/1992 | EP0472258A2 Method of hydraulic fracture of subterranean formation |
| 02/26/1992 | CN2097276U Improved sand-preventing oil pump |
| 02/25/1992 | US5090479 Method for scale inhibition in oil producing wells |
| 02/25/1992 | US5090478 Method for reducing water production from a gravel packed well |
| 02/25/1992 | US5090238 Oil well production testing |
| 02/25/1992 | CA1296250C Method and apparatus for dispensing oil well proppant additive |
| 02/19/1992 | EP0471622A1 Transfer apparatus adapted for transferring an explosive train through an externally pressurized secondary explosive bulkhead |
| 02/19/1992 | CN2096639U Cue torr |
| 02/19/1992 | CN2096638U Full-core core apparatus |
| 02/19/1992 | CN2096637U Sealed round for beam-pumping unit |
| 02/19/1992 | CN2096636U Anti-break apparatus for sucker rod |
| 02/19/1992 | CN1058798A Foam for improving sweep efficiency in subterranean oil-bearing formations |
| 02/18/1992 | US5088557 Downhole pressure attenuation apparatus |
| 02/18/1992 | US5088555 Injecting alkali metal silicate and calcium salt; forming impervious calcium silicate cement |
| 02/18/1992 | US5088554 Sintered metal sand screen |
| 02/18/1992 | CA2049365A1 Acid inhibitor composition for use in well acidizing operations |
| 02/18/1992 | CA1295952C Steam profile liquid/vapour separator |
| 02/18/1992 | CA1295887C Removable bottom founded structure |
| 02/12/1992 | EP0470885A1 Drop off apparatus for perforating gun capsule charge carriers |
| 02/12/1992 | EP0470884A1 Through tubing perforating gun including a plurality of phased capsule charges mounted on a retrievable base strip via a plurality of shatterable support rings |
| 02/12/1992 | EP0470883A2 Installation and method for the exploitation of small offshore reservoirs |
| 02/12/1992 | EP0470576A1 Apparatus for deploying and energizing submergible motor downhole |
| 02/12/1992 | EP0371976B1 A method and a plant for transport of hydrocarbons over a long distance from an offshore source of hydrocarbons |
| 02/11/1992 | WO1992002708A1 Foam for improving sweep efficiency in subterranean oil-bearing formations |
| 02/11/1992 | US5086845 Liner hanger assembly |
| 02/11/1992 | US5086844 Hydraulic release oil tool |
| 02/11/1992 | US5086843 Oil tool release joint |
| 02/11/1992 | CA2048087A1 In-situ emulsion polymerization of polyethylene derivatives |
| 02/11/1992 | CA1295547C Overburn process for recovery of heavy bitumens |
| 02/11/1992 | CA1295546C Method and apparatus for producing viscous crudes |
| 02/07/1992 | CA2048497A1 Apparatus for deploying and energizing submergible electric motor downhole |
| 02/04/1992 | US5085709 Chelation of alkaline earth metal and radioactive metal sulfates with polyaminocarboxylic acid chelant and a synergist to remove radioactivity and impurity |
| 02/04/1992 | US5085276 Production of oil from low permeability formations by sequential steam fracturing |
| 02/04/1992 | US5085275 Process for conserving steam quality in deep steam injection wells |
| 02/04/1992 | US5085274 Recovery of methane from solid carbonaceous subterranean of formations |
| 02/04/1992 | CA1295118C Steam foam process |
| 02/01/1992 | CA2047588A1 Hydraulically set anchor for well tools |
| 01/29/1992 | EP0468608A1 Draining element for the lining of wells and process for its manufacture |
| 01/28/1992 | US5084105 Sulfate scale dissolution |
| 01/28/1992 | US5083615 Aluminum alkyls used to create multiple fractures |
| 01/28/1992 | US5083614 Flexible gravel prepack production system for wells having high dog-leg severity |
| 01/28/1992 | US5083612 Enhanced oil recovery |
| 01/28/1992 | US5083610 Recovery of oil from oil reservoirs |
| 01/28/1992 | US5083609 Down hole jet pump retrievable by reverse flow and well treatment system |
| 01/28/1992 | US5083608 Arrangement for patching off troublesome zones in a well |
| 01/28/1992 | CA1294867C Process for heavy oil recovery |
| 01/22/1992 | EP0467573A2 Subsurface pressure actuated well apparatus |
| 01/22/1992 | EP0466859A1 Pipework for constructing a ground water measuring point. |
| 01/22/1992 | CN2093899U New-type chain pumping unit |
| 01/22/1992 | CN2093898U Deep-well tube oil pump for special oil wells |
| 01/22/1992 | CN1058036A Process for preparing crushing liquid containing carboxyalkyl hydroxylalkyl cellulose |
| 01/21/1992 | US5082556 Separator, float shut-off valve, and orifice meter mounted as a unit of skid |
| 01/21/1992 | US5082058 Composition and method for slowly dissolving siliceous material |
| 01/21/1992 | US5082055 Gas fired radiant tube heater |
| 01/21/1992 | US5082054 In-situ tuned microwave oil extraction process |
| 01/21/1992 | US5082053 Arrangement for cleaning contaminated ground water |
| 01/21/1992 | US5082052 Apparatus for gravel packing wells |
| 01/21/1992 | US5082020 Valve body for oilfield applications |
| 01/21/1992 | CA1294564C Heating system with gas jet driven circulation flow for high pressure well head separator |
| 01/21/1992 | CA1294542C Fluid transfer device between sea floor and surface |
| 01/21/1992 | CA1294541C Wire line retrievable side pocket mandrel steam choke apparatus |
| 01/21/1992 | CA1294495C Deepwater floating drilling and production facility incorporating flexible production risers |
| 01/15/1992 | EP0465623A1 Method and apparatus for sealing pipe perforations |
| 01/15/1992 | EP0465543A1 Method and apparatus for monitoring well fluid parameters. |
| 01/15/1992 | CN1015302B Deep-well water and oil vacuum pump |
| 01/14/1992 | US5080809 Polymers useful in the recovery and processing of natural resources |
| 01/14/1992 | US5080174 Hydraulic packoff and casing hanger installation tool |
| 01/14/1992 | US5080172 Method of recovering oil using continuous steam flood from a single vertical wellbore |
| 01/14/1992 | US5080170 Method for reducing fluid leak-off during well treatment |
| 01/14/1992 | US5080169 Polysilalkylenesilane polymer useful in enhanced oil recovery using carbon dioxide flooding |
| 01/14/1992 | CA1294213C Method for controlling rock dissolution and pipe corrosion during oil well steam injection |
| 01/14/1992 | CA1294134C Method and apparatus for tensioning a riser |
| 01/11/1992 | CA2046541A1 Methods and apparatus for disarming and arming explosive detonators |
| 01/10/1992 | CA2046470A1 Method and apparatus for actuating a downhole tool |
| 01/09/1992 | DE4020062A1 Removal of waste water by suction pipe - which has holes for injection of air to form air bubbles for lifting effect |
| 01/08/1992 | EP0465316A1 Apparatus for stimulating production and for logging for non-eruptive wells |
| 01/08/1992 | EP0464340A2 Apparatus and method for inserting a pump within a conduit |
| 01/08/1992 | CN1057663A Composition for dissolving sulfer and process for its use |
| 01/07/1992 | US5078213 Adjustable floating pumping system |
| 01/07/1992 | US5078212 Emplacement of filter packs and seals for groundwater monitoring |
| 01/07/1992 | US5078211 Plastic packer |
| 01/07/1992 | US5078210 Time delay perforating apparatus |
| 01/07/1992 | CA2003534C Attachment for an oil well screw pump system |
| 01/07/1992 | CA1294067C Method for determining depth of penetration of radioactive tracersin formation fractures |
| 01/07/1992 | CA1293923C Matrix treatment process for oil extraction applications |
| 01/05/1992 | WO1992001139A1 Radially deformable tube consisting of several releasably connected sections |
| 01/05/1992 | CA2086558A1 Radially deformable tube consisting of several releasably connected sections |
| 01/02/1992 | EP0463664A1 Treating an underground formation |
| 01/02/1992 | EP0463475A2 Composition for dissolving sulfur and process for its use |