| 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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| 09/29/1987 | CA1227396A1 Pit-less adaptor bypass |
| 09/29/1987 | CA1227380A1 Motion compensation means for a floating production system |
| 09/24/1987 | WO1987005658A1 Process for tertiary oil extraction from deep boreholes with evaluation of the petroleum gas emerging therefrom |
| 09/24/1987 | DE3609876A1 Swivel |
| 09/24/1987 | DE3609588A1 Apparatus and method of determining the portion of gas, oil and water in crude-oil production |
| 09/23/1987 | EP0238169A1 Tension leg platform and anchoring structure therefor |
| 09/23/1987 | EP0081562B1 Process and apparatus for recovering usable water and other materials from oil field mud/waste pits |
| 09/22/1987 | US4695231 Sonic impeller for sonic well pump |
| 09/22/1987 | US4695201 Removable bottom founded structure |
| 09/22/1987 | US4695191 Handling system for effecting a submerged coupling |
| 09/22/1987 | US4695189 Rotating connection assembly for subsea pipe connection |
| 09/22/1987 | US4694909 Riser support system |
| 09/22/1987 | US4694905 With phenolic andor furan resin |
| 09/22/1987 | US4694904 For recovering oil from a subterranean formation |
| 09/22/1987 | US4694878 Disconnect sub for a tubing conveyed perforating gun |
| 09/22/1987 | US4694754 Multi-phase charge holder |
| 09/22/1987 | CA1227227A1 Oil well evacuation system |
| 09/22/1987 | CA1227126A1 Method to divert steam for thermal recovery process |
| 09/16/1987 | EP0236722A1 Flexible column from composite material |
| 09/16/1987 | EP0236640A1 Method and apparatus for extracting geothermal fluid |
| 09/15/1987 | US4693636 Pipeline pull-in method and apparatus |
| 09/15/1987 | US4693327 Earth well drilling apparatus |
| 09/15/1987 | US4693318 Sand control devices and method of installation thereof |
| 09/15/1987 | US4693317 For use in an earth borehole |
| 09/15/1987 | US4693314 Tubing vent |
| 09/15/1987 | US4693311 Steam foam process |
| 09/15/1987 | US4693308 Tubing conveyed perforating safety anchor |
| 09/09/1987 | EP0236166A1 Process and installation for circulating fluids by pumping |
| 09/09/1987 | EP0235268A1 Method and apparatus for reducing viscosity of high viscosity materials. |
| 09/09/1987 | CN87100189A Extracting method of special crude oil |
| 09/08/1987 | US4691781 Well drilling and completion apparatus |
| 09/08/1987 | US4691773 Insitu wet combustion process for recovery of heavy oils |
| 09/08/1987 | US4691771 Oxygen injection for heating by in-situ combostion |
| 09/08/1987 | CA1226515A1 Contamination removal system and method |
| 09/08/1987 | CA1226514A1 Controlled pressure in situ mineral leaching system |
| 09/08/1987 | CA1226513A1 Blanket-medium/brine interface detection in a solution-mining process |
| 09/01/1987 | US4690460 Power unit |
| 09/01/1987 | US4690227 Gun firing head |
| 09/01/1987 | US4690218 Method for depth control and detonation of tubing conveyed gun assembly |
| 09/01/1987 | US4690216 Formation fluid sampler |
| 09/01/1987 | US4690215 Waterflooding followed by fireflooding with oxygen enriched a tmosphere |
| 09/01/1987 | US4690214 Method and a device for carrying out measurements and/or operations in a well |
| 09/01/1987 | CA1226209A1 Oil and gas production enhancement using electrical means |
| 09/01/1987 | CA1226144A1 Foundation level and construction of a subsea production platform and a method of using said tool |
| 08/26/1987 | EP0233794A1 Apparatus for connecting auxiliary lines to an underwater drilling equipment |
| 08/26/1987 | EP0233750A2 Bar vent for downhole tool |
| 08/25/1987 | US4689053 Heating system with gas jet driven circulation flow for high pressure well head separator |
| 08/25/1987 | US4688966 Reduced J tube pull force |
| 08/25/1987 | US4688648 Method of and apparatus for crushing earth under the ground |
| 08/25/1987 | US4688642 Rotatable liner with multiple simultaneously set liner hanger arrangement and method |
| 08/25/1987 | US4688640 Abandoning offshore well |
| 08/25/1987 | US4688637 Method for induced flow recovery of shallow crude oil deposits |
| 08/25/1987 | US4688418 Method and apparatus for determining mass flow rate and quality in a steam line |
| 08/25/1987 | CA1225929A1 Retrievable insert landing assembly |
| 08/25/1987 | CA1225928A1 Method of underground gasification of a series of gently dipping and inclined coal seams |
| 08/25/1987 | CA1225927A1 Cyclic solvent assisted steam injection process for recovery of viscous oil |
| 08/25/1987 | CA1225926A1 Method of procedure for construction of drilled well, principally water producing well and well outfit for carry out the procedure |
| 08/19/1987 | EP0233068A2 Setting device for zone gravel packing system |
| 08/18/1987 | US4687420 Sonic pressure wave pump with liquid heating and elevating mechanism |
| 08/18/1987 | US4687377 Method and apparatus for subsea flexible conduit installation |
| 08/18/1987 | US4687062 Undersea template for the drilling of wells for the exploitation of hydrocarbon pools under the sea |
| 08/18/1987 | US4687061 Stimulation of earth formations surrounding a deviated wellbore by sequential hydraulic fracturing |
| 08/18/1987 | US4687059 Enhanced hydrocarbon recovery process utilizing thermoelastic fracturing |
| 08/18/1987 | US4687058 Solvent enhanced fracture-assisted steamflood process |
| 08/18/1987 | US4687057 Determining steam distribution |
| 08/18/1987 | US4687054 Linear electric motor for downhole use |
| 08/18/1987 | CA1225519A1 Clarification of high density brine fluids |
| 08/13/1987 | WO1987004755A1 Method and apparatus for data transmission in a well using a flexible line with stiffener |
| 08/13/1987 | DE3544697C1 Process and device for removing liquid accumulations from landfill-gas extraction lines |
| 08/12/1987 | EP0232183A2 Retrievable gravel packer |
| 08/12/1987 | EP0231707A1 Method and device for positioning an element using ultrasonic transducers |
| 08/11/1987 | US4685833 Offshore structure for deepsea production |
| 08/11/1987 | US4685522 Well production controller system |
| 08/11/1987 | US4685519 Hydraulic fracturing and gravel packing method employing special sand control technique |
| 08/11/1987 | US4685515 Modified 7 spot patterns of horizontal and vertical wells for improving oil recovery efficiency |
| 08/11/1987 | CA1225325A1 In-place wellbore consolidation in petroleum reservoirs using sulfur-oil polymers |
| 08/05/1987 | CN86108799A Double cylinder screen |
| 08/04/1987 | US4684291 Template levelling device |
| 08/04/1987 | US4683951 Chemical flooding and controlled pressure pulse fracturing process for enhanced hydrocarbon recovery from subterranean formations |
| 08/04/1987 | US4683950 Process for hydraulically fracturing a geological formation along a predetermined direction |
| 08/04/1987 | US4683948 Enhanced oil recovery process employing carbon dioxide |
| 08/04/1987 | US4683947 Process and apparatus for monitoring and controlling the flammability of gas from an in-situ combustion oil recovery project |
| 08/04/1987 | US4683946 Method and apparatus for the installation and modification of oil well evacuation systems |
| 08/04/1987 | US4683945 Above ground--below ground pump apparatus |
| 08/04/1987 | US4683943 Well treating system for stimulating recovery of fluids |
| 08/04/1987 | CA1225022A1 Submersible pump installation, methods and safety system |
| 08/04/1987 | CA1225020A1 Parallel string method for multiple string, thermal fluid injection |
| 08/04/1987 | CA1225019A1 Downhole tool |
| 08/04/1987 | CA1225018A1 Oscillatory flow method for improved well cementing |
| 08/04/1987 | CA1224915A1 .alpha. OLEFIN SULFONATE SURFACTANT ADDITIVES FOR GAS FOAM DRIVES AND A PROCESS OF STIMULATING HYDROCARBON RECOVERY FROM A SUBTERRANEAN FORMATION |
| 07/30/1987 | WO1987004488A1 Method for hydraulic fracture propagation in hydrocarbon-bearing formations |
| 07/30/1987 | WO1987004420A1 Nitrogen injection |
| 07/28/1987 | US4683063 Soybean oils, not enhanced oil recovery |
| 07/28/1987 | US4682656 Completion apparatus and method for gas lift production |
| 07/28/1987 | US4682655 Slotted housing having multiple seats for supporting and locating submersible pumps in deep wells |
| 07/28/1987 | US4682653 Steam recovery processes employing stable forms of alkylaromatic sulfonates |
| 07/28/1987 | US4682652 Producing hydrocarbons through successively perforated intervals of a horizontal well between two vertical wells |
| 07/28/1987 | CA1224716A1 J-configured offshore oil production riser |
| 07/28/1987 | CA1224715A1 Apparatus and method for connecting subsea production equipment to a floating facility |
| 07/28/1987 | CA1224714A1 Device for stimulating a subterranean formation |