| Patents for E21B 41 - Equipment or details not covered by groups (7,984) |
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| 04/11/1989 | CA1252386A1 Device for placing, activating and connecting the modules of a submerged oil producing unit |
| 04/06/1989 | WO1989002774A1 Apparatus and method for removing and recovering oil and/or other oil-based drilling mud additives from drill cuttings |
| 04/05/1989 | EP0310215A1 System and method for completing multiple wells from a single well bore |
| 04/05/1989 | EP0309445A1 A securing device. |
| 04/04/1989 | US4818298 Cleaning with liquid jets, impregnating with corrosion inhibitor |
| 04/04/1989 | US4817722 Automatic well treatment method |
| 03/21/1989 | CA1251393A1 Method and apparatus for distributing fluids within a subterranean wellbore |
| 03/14/1989 | US4811786 Downhole gaseous liquid flow agitator |
| 03/08/1989 | EP0306407A1 Apparatus for the injection of corrosion or scale inhibitors in a geothermal well |
| 03/07/1989 | US4809784 Tool for underwater connections on an oil production station |
| 02/28/1989 | US4807709 Fluid Powered drilling jar |
| 02/28/1989 | US4807704 System and method for providing multiple wells from a single wellbore |
| 02/28/1989 | CA1250519A1 Treatment of steam feedwater with co.sub.2 to reduce oil well reservoir gravel and sand dissolution during steam injection |
| 02/21/1989 | US4805951 Gripping a retraction cone attached to a workpiece |
| 02/21/1989 | US4805407 Thermomechanical electrical generator/power supply for a downhole tool |
| 02/14/1989 | USRE32866 Method and apparatus for distributing fluids within a subterranean wellbore |
| 02/07/1989 | US4802533 Method of controlling permeability damage of hydrocarbon formations during steam injection while preventing pipe corrosion |
| 02/07/1989 | CA1249777A1 Process for passing carbon dioxide through a cased, cemented and perforated well |
| 01/31/1989 | US4802150 Mud pressure control system with magnetic torque transfer |
| 01/31/1989 | US4800966 Devices for drilling branched wells |
| 01/31/1989 | CA1249509A1 Submerged valve control apparatus |
| 01/24/1989 | US4800104 Oil and gas well pipes, electrooptics |
| 01/24/1989 | US4799816 Connection device for a guide line of an undersea installation |
| 01/24/1989 | US4799554 Pressure actuated cleaning tool |
| 01/24/1989 | CA1249218A1 Method and apparatus for injecting well treating liquid into the bottom of a reservoir interval |
| 01/24/1989 | CA1249217A1 Well treating apparatus |
| 01/10/1989 | US4797029 Remotely installing a tubular string |
| 01/10/1989 | US4796699 Well tool control system and method |
| 01/10/1989 | US4796697 Slip stream device |
| 01/10/1989 | CA1248364A1 Down-hole devices for imparting rotary motion |
| 01/10/1989 | CA1248344A1 Casing pack and method for controlling external well casing corrosion |
| 01/03/1989 | US4794990 Corrosion protected shaped charge and method |
| 12/27/1988 | US4794534 Method of drilling a well utilizing predictive simulation with real time data |
| 12/27/1988 | US4794322 Method, system, and tool for investigating borehole casings |
| 12/27/1988 | US4793423 Process for treating drilled cuttings |
| 12/22/1988 | EP0290486A4 Corrosion inhibitors for clear, calcium-free high density fluids. |
| 12/20/1988 | US4791985 System to proportion assisting fluids in a well |
| 12/20/1988 | CA1246858A1 Method and composition for inhibiting corrosion |
| 12/13/1988 | US4791618 Well logging method and system for detecting structural and stratigraphic geological make-up of subsurface formations |
| 12/13/1988 | US4790378 Well testing apparatus |
| 12/06/1988 | US4789970 Method and device for positioning an element using ultrasonic sensors |
| 12/06/1988 | US4789031 Copper, zinc, nickel, lead and tin alloy; corrosion resistance, antiscaling |
| 11/29/1988 | US4787457 Method and apparatus for rotating casing string segment |
| 11/29/1988 | US4787455 Method for scale and corrosion inhibition in a well penetrating a subterranean formation |
| 11/29/1988 | US4787452 Injection of aqueous saline slurry incrementally |
| 11/29/1988 | US4787450 Gas lift process for restoring flow in depleted geothermal reservoirs |
| 11/22/1988 | US4786209 Method for maintenance of valves included in a subsea production system for oil and gas |
| 11/22/1988 | US4785880 Apparatus for dispensing chemicals into oil and gas wells |
| 11/22/1988 | CA1245152A1 Retrievable exploration guide base/completion guide base system |
| 11/17/1988 | EP0290659A1 Rigidification of semi-solid agglomerations |
| 11/17/1988 | EP0290486A1 Corrosion inhibitors for clear, calcium-free high density fluids. |
| 11/15/1988 | US4784779 Corrosion inhibitors for clear, calcium-free high density fluids |
| 11/15/1988 | US4784778 Corrosion inhibiting composition for zinc halide-based clear, high density fluids |
| 11/15/1988 | US4784523 Method and apparatus for remotely orienting a flowline for connection to a subsea structure |
| 11/08/1988 | US4782896 Retrievable fluid flow control nozzle system for wells |
| 11/01/1988 | US4781250 For cleaning flow conductors |
| 10/25/1988 | US4780278 Alkylaniline/formaldehyde oligomers as corrosion inhibitors |
| 10/25/1988 | US4779679 Sustained release of corrosion inhibitor by complexing with ion exchange resin |
| 10/18/1988 | US4778654 For oil well metal equipment |
| 10/18/1988 | US4778007 Having horizontal drainhole bores in well |
| 10/11/1988 | US4776727 Quick release platform grouting valve system |
| 10/11/1988 | US4776409 Insitu waste impoundment treating apparatus and method of using same |
| 09/27/1988 | US4774007 Cleaning hydrocarbons from waste pits, pollution control |
| 09/14/1988 | EP0188459B1 Manned autonomous underwater vessel |
| 09/13/1988 | CA1241944A1 Sleeved drill string coupling, especially for traversing a flow loss zone |
| 09/07/1988 | WO1988006674A1 Device for a pressure-relief system for processing equipment on offshore platforms |
| 08/30/1988 | CA1241463A1 Process and apparatus for handling waste from oil well operations |
| 08/02/1988 | US4761473 Novel compositions prepared from organic amines and nitrogen-containing aromatic heterocyclic compounds substituted with at least one group selected from carboxylic acid, carboxylic acid ester, carboxylic acid anhydride and carboxylic acid halide |
| 07/12/1988 | US4756888 Recovery of silver-containing scales from aqueous media |
| 07/05/1988 | US4754821 For use in an adjustable stabilizer |
| 07/05/1988 | US4754817 Subsea well template for directional drilling |
| 06/22/1988 | EP0185727B1 Underwater operating system |
| 06/14/1988 | CA1237981A1 Underwater production station unit and wellhead shield |
| 06/07/1988 | US4749036 Dual bore well treating tool |
| 05/24/1988 | US4746246 Remotely actuated cutting assembly for broken underwater guidelines |
| 05/24/1988 | US4746245 Offshore drilling and/or production system |
| 05/17/1988 | US4744420 For exacuating solids |
| 05/11/1988 | EP0266621A1 System and method for replacing an insert unit included in an assembly located at a remote lowered location |
| 05/10/1988 | US4742871 Device for positioning a tool within a wellbore flow string |
| 05/04/1988 | EP0265814A1 Retracting, aligning and fixing device |
| 05/03/1988 | CA1236003A1 Apparatus and method of well preparation for chemical treatment of produced fluids |
| 04/26/1988 | US4740320 Process for preventing corrosion of a metal in contact with a well fluid |
| 04/26/1988 | US4740110 Platform grouting system and method |
| 04/20/1988 | EP0263967A1 Submersible pile hammer |
| 04/12/1988 | US4736791 Subsurface device actuator requiring minimum power |
| 04/07/1988 | WO1988002433A1 Corrosion inhibitors for clear, calcium-free high density fluids |
| 04/07/1988 | WO1988002432A1 Corrosion inhibiting composition for zinc halide-based clear, high density fluids |
| 03/29/1988 | US4733895 Electromechanical manipulator assembly |
| 03/29/1988 | CA1234499A1 Rigidification of semi-solid agglomerations |
| 03/23/1988 | EP0260278A1 Nitrogen injection |
| 03/22/1988 | US4732225 Deep-borehole drilling device with magnetic coupling |
| 03/15/1988 | USRE32623 Curved offshore well conductors |
| 03/15/1988 | US4730677 Method and system for maintenance and servicing of subsea wells |
| 03/15/1988 | US4730676 Downhole foam generator |
| 02/23/1988 | US4727447 Safety system and method |
| 02/23/1988 | US4726301 System for extracting contaminants and hydrocarbons from cuttings waste in oil well drilling |
| 02/16/1988 | US4725362 Treatment techniques for drill fluids, cuttings and other oil field wastes |
| 02/16/1988 | US4725197 Devices for imparting rotary motion |
| 02/11/1988 | WO1988001009A1 Method and system for attaching and removing equipment from a wellhead |
| 02/02/1988 | CA1232321A1 Method and apparatus for monitoring well tubing fluid |