| 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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| 02/11/1986 | US4569394 Method and apparatus for increasing the concentration of proppant in well stimulation techniques |
| 02/11/1986 | US4569393 CO2 -Induced in-situ gelation of polymeric viscosifiers for permeability contrast correction |
| 02/11/1986 | CA1200458A1 Apparatus and method for inverting a polymer emulsion |
| 02/04/1986 | US4568511 Method for monitoring ore grade of an uranium bearing mixture |
| 02/04/1986 | US4568361 Cyclic char gasifier oxidation process |
| 02/04/1986 | US4568221 Device for anchoring underwater pipes in a fixed sleeve |
| 02/04/1986 | US4568220 Capping and/or controlling undersea oil or gas well blowout |
| 02/04/1986 | US4567945 Electrode well method and apparatus |
| 02/04/1986 | US4567842 Weight type motion compensation system for a riser moored tanker |
| 02/04/1986 | US4567795 Slot cutting apparatus |
| 02/04/1986 | CA1200198A1 Flowline connector |
| 02/04/1986 | CA1200197A1 Flowline pull-in apparatus and method |
| 02/04/1986 | CA1200192A1 Recovery of viscous hydrocarbons by electromagnetic heating in situ |
| 02/04/1986 | CA1200175A1 Folding service line |
| 01/29/1986 | EP0169412A1 Proppant for oil and gas wells |
| 01/28/1986 | US4566544 Firing system for tubing conveyed perforating gun |
| 01/28/1986 | US4566539 Fracturing, propping agents, acidification |
| 01/28/1986 | US4566538 Fail-safe one trip perforating and gravel pack system |
| 01/28/1986 | US4566537 Heavy oil recovery |
| 01/28/1986 | US4566536 Method for operating an injection well in an in-situ combustion oil recovery using oxygen |
| 01/22/1986 | EP0168632A1 Removable functional module for a submarine oil production installation |
| 01/22/1986 | EP0168470A1 Process and apparatus for purification of contaminated groundwater |
| 01/21/1986 | US4565249 Heavy oil recovery process using cyclic carbon dioxide steam stimulation |
| 01/21/1986 | US4565245 Completion for tar sand substrate |
| 01/21/1986 | CA1199660A1 Underwater connector apparatus |
| 01/21/1986 | CA1199575A1 Process and system for providing multiple streams of wet steam having substantially equal quality for recovering heavy oils |
| 01/21/1986 | CA1199574A1 Visbreaking-enhanced thermal recovery method utilizing high temperature steam |
| 01/21/1986 | CA1199573A1 In situ oil shale process |
| 01/21/1986 | CA1199555A1 Flow control apparatus and method |
| 01/16/1986 | WO1986000353A1 Underwater operating system |
| 01/16/1986 | WO1986000237A1 Fluid separation cells and spacers for use in these |
| 01/15/1986 | EP0168366A1 A device for pumping oil |
| 01/15/1986 | EP0167583A1 Fluid/fluid separators |
| 01/14/1986 | US4564459 Proppant charge and method |
| 01/14/1986 | US4564076 Well completion method and apparatus |
| 01/14/1986 | US4564069 In-place wellbore consolidation in petroleum reservoirs using sulfur-oil polymers |
| 01/14/1986 | CA1199375A1 Mitigation of radio frequency electric field peaking in controlled heat processing of hydrocarbonaceous formations in situ |
| 01/14/1986 | CA1199268A1 Oil recovery method |
| 01/14/1986 | CA1199267A1 Cyclic thermal solvent recovery method utilizing visbroken produced crude oil |
| 01/14/1986 | CA1199266A1 Thermal solvent recovery method utilizing visbroken produced crude oil |
| 01/14/1986 | CA1199265A1 In-situ uranium leaching |
| 01/07/1986 | US4563283 Process for clarifying bicarbonate bearing waters using measurement and control of carbon dioxide content |
| 01/07/1986 | US4563032 Pulling head for removably engaging a conduit end |
| 01/07/1986 | US4562889 Method and apparatus for rotating and reciprocating well bore liner |
| 01/07/1986 | US4562739 Production monitoring system |
| 12/31/1985 | US4561803 Conductor guide system for offshore drilling platform |
| 12/31/1985 | US4561696 In situ recovery of mineral values |
| 12/31/1985 | US4561356 Explosive charge safe-arming system |
| 12/31/1985 | CA1198669A1 Method for profile control and conformance correction |
| 12/31/1985 | CA1198668A1 Perforating gun indexed wiring harness |
| 12/31/1985 | CA1198667A1 Method and apparatus for conducting wireline operations in a borehole |
| 12/27/1985 | EP0165343A1 Process for selectively separating petroleum fractions |
| 12/27/1985 | EP0165330A1 Production monitoring system |
| 12/24/1985 | US4560206 Method for explosively expanding a pillar |
| 12/24/1985 | US4560205 Method for control of geometry of fragmented mass in an situ oil shale retort |
| 12/24/1985 | US4560003 Solvent stimulation in heavy oil wells producing a large fraction of water |
| 12/24/1985 | US4560000 Firing apparatus |
| 12/24/1985 | CA1198548A1 High molecular weight water-soluble copolymers, their preparation and use |
| 12/20/1985 | CN85105346A Titanium gel water based fracturing fluid |
| 12/18/1985 | EP0165223A1 A self-purging separator |
| 12/17/1985 | US4559148 Method of extracting and reutilizing surfactants from emulsions |
| 12/17/1985 | US4558972 Subsea pipeline connection |
| 12/17/1985 | US4558742 Method and apparatus for gravel packing horizontal wells |
| 12/17/1985 | US4558740 Injection of steam and solvent for improved oil recovery |
| 12/17/1985 | US4558737 Downhole thermoacoustic device |
| 12/17/1985 | US4558592 Apparatus for on-site assessment of the effectiveness of a treatment in the course of its application to a hydrocarbon well |
| 12/17/1985 | US4558568 Method and apparatus for mobilizing geothermal fluid |
| 12/17/1985 | CA1198048A1 Process for recovery of mineral values from subterranean formations |
| 12/17/1985 | CA1197977A1 Fracturing method for stimulation of wells utilizing carbon dioxide based fluids |
| 12/11/1985 | EP0164225A2 Clarification of high density brine fluids |
| 12/10/1985 | US4557837 Foaming methanol woth flouripolymer, stable, long-lasting |
| 12/10/1985 | US4557331 Well perforating method and apparatus |
| 12/10/1985 | US4557330 Miscible flooding with displacing fluid containing additive compositions |
| 12/10/1985 | US4557329 Oil recovery by in-situ combustion |
| 12/10/1985 | US4557328 Method for underground burning of coal for energy |
| 12/10/1985 | US4557325 Remote control fracture valve |
| 12/10/1985 | CA1197771A1 Method for recovering heavy crudes from shallow reservoirs |
| 12/03/1985 | US4556107 Steam injection including alpha-olephin sulfonate dimer surfactant additives and a process of stimulating hydrocarbon recovery from a subterranean formation |
| 12/03/1985 | CA1197457A1 Viscous oil recovery method |
| 12/03/1985 | CA1197456A1 Method of recovering oil using steam |
| 12/03/1985 | CA1197455A1 Use of recycled combustion gas during termination of an enriched air combustion recovery method |
| 12/03/1985 | CA1197454A1 Oil field steam production and use |
| 12/03/1985 | CA1197369A1 Composition of aqueous surfactant and liquid or dense phase co.sub.2 for plugging subterranean formations |
| 11/27/1985 | EP0162368A2 Injection gas-generating device, particularly for charging mineral oil from its underground reservoirs |
| 11/26/1985 | US4555493 Aluminosilicate ceramic proppant for gas and oil well fracturing and method of forming same |
| 11/26/1985 | US4555351 Olefin sulfonate surfactant |
| 11/26/1985 | US4555333 Separating impurities from fluid pumped from a well |
| 11/26/1985 | US4555332 Treatment of oil well production |
| 11/26/1985 | US4554981 Tubing pressurized firing apparatus for a tubing conveyed perforating gun |
| 11/26/1985 | US4554975 Hold down apparatus for wireline operated gun |
| 11/26/1985 | CA1197184A1 Prepacked well screen and casing assembly |
| 11/26/1985 | CA1197180A1 Subsea wellhead connection assembly and a method of installing same |
| 11/26/1985 | CA1197179A1 In-situ combustion method for recovery of oil and combustible gas |
| 11/26/1985 | CA1197178A1 Well completion for injecting high purity oxygen in a fire flooding process |
| 11/21/1985 | WO1985005146A1 Surfactant compositions for steamfloods |
| 11/19/1985 | US4554082 Fracturing method for stimulation of wells utilizing carbon dioxide based fluids |
| 11/19/1985 | US4553989 Safety system for removing any risk of carrying liquids to the nose of the flare or to the vent-hole during burning or dispersion of the gases associated with production |
| 11/19/1985 | US4553600 Safety installation for a submerged drilling well-head |
| 11/19/1985 | US4553596 Well completion technique |
| 11/19/1985 | US4553595 Method for forming a gravel packed horizontal well |