| 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) |
|---|
| 04/11/1989 | CA1252280A1 Stable mixture of crosslinkable components promptly activatable as treating agents |
| 04/06/1989 | WO1989002972A1 Methods for monitoring temperature-vs-depth characteristics in a borehole |
| 04/06/1989 | WO1989002848A1 Floating production system and vessel for undersea oil well |
| 04/05/1989 | EP0310506A1 Apparatus and method for underwater production of a fluid contained in a geological formation |
| 04/04/1989 | USH614 Method to connect drill holes utilizing signalling devices |
| 04/04/1989 | US4818403 Double cylinder screen |
| 04/04/1989 | US4817718 Hydraulically activated firing head for well perforating guns |
| 04/04/1989 | US4817717 Hydraulic fracturing with a refractory proppant for sand control |
| 04/04/1989 | US4817716 Pipe connector and method of applying same |
| 04/04/1989 | US4817715 Aqueous flooding methods for tertiary oil recovery |
| 04/04/1989 | US4817714 Decreasing total fluid flow in a fractured formation |
| 04/04/1989 | US4817713 Steam injection profiling |
| 04/04/1989 | US4817712 Rod string sonic stimulator and method for facilitating the flow from petroleum wells |
| 04/04/1989 | US4817711 System for recovery of petroleum from petroleum impregnated media |
| 04/04/1989 | US4817710 Apparatus for absorbing shock |
| 04/04/1989 | US4817531 Capsule charge retaining device |
| 04/04/1989 | CA1251924A1 Process for optimizing the noncondensible gas content of an oil-displacing steam-foam-forming mixture |
| 03/29/1989 | EP0309186A1 Improved helically wound screen and method of making the same |
| 03/29/1989 | CN1032069A Undersea conveying apparatus of crude oil and natural gas |
| 03/28/1989 | US4816146 Water and oil mixture separator |
| 03/28/1989 | US4816077 Process for the preparation of an aqueous solution of a heteropolysaccharide |
| 03/28/1989 | US4815791 Bedded mineral extraction process |
| 03/28/1989 | US4815790 Using pressurized hot aqueous liquid |
| 03/28/1989 | US4815540 Method and apparatus for releasing a well perforating gun from a supporting tubing string |
| 03/28/1989 | US4815537 Method for viscous hydrocarbon recovery |
| 03/28/1989 | CA1251742A1 Treatment of oil well production |
| 03/23/1989 | DE3730659A1 Process for taking off carbonated mineral water from a bore hole |
| 03/22/1989 | EP0308257A2 Novolac coated ceramic particulate |
| 03/22/1989 | CN2034614U Pneumatic balance type balancing cylinder installation of sliding beam oil attraction machine |
| 03/21/1989 | US4813485 Gas and oil well pumping or swabbing device and method |
| 03/21/1989 | US4813484 Chemical blowing agents for improved sweep efficiency |
| 03/21/1989 | US4813483 Post-steam alkaline flooding using buffer solutions |
| 03/21/1989 | US4813482 Method for removal of paraffin from producing oil wells |
| 03/21/1989 | US4813481 Expendable flapper valve |
| 03/21/1989 | CA1251393A1 Method and apparatus for distributing fluids within a subterranean wellbore |
| 03/21/1989 | CA1251390A1 Pressure-up/blowdown combustion - a channelled reservoir recovery process |
| 03/16/1989 | DE3737259C1 Apparatus and method for high-pressure injection |
| 03/15/1989 | EP0307266A1 Method and apparatus for driving specialised intervention equipment into a borehole with at least one section strongly inclined relative to the vertical |
| 03/15/1989 | EP0307003A2 Electromagnetic energy heating |
| 03/15/1989 | CN2034196U Anti-slip device for sucker rod |
| 03/15/1989 | CN2034082U High efficient electric hydroextractor for crude oil |
| 03/14/1989 | US4811791 Enhanced oil recovery |
| 03/14/1989 | US4811790 Well bore device and method for sand control |
| 03/14/1989 | US4811789 Minimizing formation damage under adverse conditions during gravel pack operations |
| 03/14/1989 | US4811786 Downhole gaseous liquid flow agitator |
| 03/14/1989 | CA1251223A1 Ceramic spheroids having low density and high crush resistance |
| 03/14/1989 | CA1251184A1 Method and apparatus for separating the components of a wellstream |
| 03/08/1989 | EP0305612A1 Method for foam emplacement in carbon dioxide enhanced recovery |
| 03/08/1989 | CN2033852U 平衡缸装置 Balancing cylinder device |
| 03/08/1989 | CN1031589A Drive assembly with overspeed brake |
| 03/07/1989 | US4810373 Apparatus for separating solids from fluids |
| 03/07/1989 | US4809952 System for remote anchoring and tensioning of an elongate element |
| 03/07/1989 | US4809780 Method for sealing thief zones with heat-sensitive fluids |
| 03/07/1989 | CA1250863A1 Process for the preparation of hydrocarbons and/or oxygen-containing hydrocarbon derivatives and for crude oil production |
| 03/01/1989 | EP0305163A1 A method of controlling flow |
| 03/01/1989 | EP0304712A2 Method of and device for removing volatile contaminants from the soil |
| 03/01/1989 | CN2033444U Multi-function automatic controll instrument for oil extractor |
| 03/01/1989 | CN1031369A Polyalky leneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur |
| 02/28/1989 | US4808034 System and method for securing a marine riser to a floating structure |
| 02/28/1989 | US4807707 For sampling soil gas or ground water |
| 02/28/1989 | US4807703 Injecting foamed, gelled acid followed by foamed acid; fingering, uneven etching |
| 02/28/1989 | US4807702 Method for improving high impulse fracturing |
| 02/28/1989 | US4807701 Method for thermal stimulation of a subterranean reservoir and apparatus therefor |
| 02/28/1989 | US4807699 Tubing sleeve |
| 02/28/1989 | CA1250519A1 Treatment of steam feedwater with co.sub.2 to reduce oil well reservoir gravel and sand dissolution during steam injection |
| 02/23/1989 | WO1989001562A1 Cementing method and arrangement |
| 02/22/1989 | CN2033053U Petroleum perforation bullet and fixed catapult frame |
| 02/22/1989 | CN2033052U Oil extraction device getting water and gas injection at same time |
| 02/22/1989 | CN1031269A Method for controlling rock dissolution and pipe corrosion during steam injection in on oil well |
| 02/21/1989 | US4805697 Method of pumping hydrocarbons from a mixture of said hydrocarbons with an aqueous phase and installation for the carrying out of the method |
| 02/21/1989 | CA1250228A1 Liner hanger with brass packer |
| 02/21/1989 | CA1250227A1 Marine riser structural core connector |
| 02/21/1989 | CA1250226A1 Subsea flowline connector |
| 02/21/1989 | CA1250225A1 Burner for igniting an injection well |
| 02/16/1989 | DE3811962C1 Arrangement for expelling highly volatile impurities from ground water |
| 02/15/1989 | CN2032649U Drip of deep well pump |
| 02/15/1989 | CN1031101A Preparation of oil-reservoir complexing basifier |
| 02/14/1989 | USRE32866 Method and apparatus for distributing fluids within a subterranean wellbore |
| 02/14/1989 | US4804485 Antifouling agents to prevent sulfur plugging in sour oil and gas wells |
| 02/14/1989 | US4804477 Apparatus and method for processing oil well brine |
| 02/14/1989 | US4804044 Perforating gun firing tool and method of operation |
| 02/14/1989 | US4804043 Using a crosslinkable mixture of partially hydrolyzed polyacrylamide, phenol, formaldehyde |
| 02/08/1989 | CN2032249U Anchor filled with ceramic gravel sand haydite and chad |
| 02/08/1989 | CN2032248U Adjustable oil nozzle without closing oil exploitation well |
| 02/08/1989 | CN2032247U Drauing empty controller for rod type oil pump |
| 02/08/1989 | CN1030958A Crankshaft pressure cylinder type hydraulic pumping unit |
| 02/07/1989 | US4802533 Method of controlling permeability damage of hydrocarbon formations during steam injection while preventing pipe corrosion |
| 02/07/1989 | EP0224474A4 Water soluble perforation pack. |
| 02/07/1989 | CA1249875A1 Directional acoustic logger apparatus and method |
| 02/01/1989 | EP0301626A1 Pyrolytic carbon coating of media improves gravel packing and fracturing capabilities |
| 02/01/1989 | EP0301060A1 Device for opening gas sources in refuse tips, and for exploring and cleansing materials for recycling and contaminated ground. |
| 02/01/1989 | CN2031837U Ignition system for petroleum perforator |
| 02/01/1989 | CN1030809A Method for improving permeability of oil-well strata and its solvent |
| 01/31/1989 | US4802144 Hydraulic fracture analysis method |
| 01/31/1989 | US4800960 Consolidatable gravel pack method |
| 01/31/1989 | US4800958 Annulus pressure operated vent assembly |
| 01/31/1989 | US4800957 Recovering hydrocarbons with a mixture of carbon dioxide and alcohol |
| 01/31/1989 | US4800815 Use in a perforating gun |
| 01/31/1989 | US4800753 Geomechanical probe for a drilling well |
| 01/31/1989 | CA1249429A1 Waterflood oil recovery process using internal olefin sulfonate surfactant |