| 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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| 12/28/1993 | US5272916 Methods of detecting and measuring in-situ elastic anisotropy in subterranean formations |
| 12/27/1993 | CA2072467A1 Vapor probe for soil gas vapor sampler |
| 12/25/1993 | CA2099101A1 Low permeability subterranean formation testing methods and apparatus |
| 12/23/1993 | WO1993026061A1 Electrical connector and pump assembly utilizing same |
| 12/23/1993 | WO1993025886A1 Densitometer |
| 12/23/1993 | WO1993025800A1 Method of completing an uncased section of a borehole |
| 12/23/1993 | WO1993025799A1 Method of creating a wellbore in an underground formation |
| 12/22/1993 | EP0575116A1 Downhole chemical cutting tool and process |
| 12/22/1993 | EP0575114A1 Large head downhole chemical cutting tool |
| 12/22/1993 | EP0575074A1 Remotely operable horizontal connection apparatus |
| 12/22/1993 | EP0574584A1 Method for providing a user with a gas supply |
| 12/22/1993 | CN2150331Y Oil-obtaining plateform with movable base in epeiric sea |
| 12/22/1993 | CN2150330Y Device for reducing practical stress of sucker rod |
| 12/22/1993 | CN1079799A Well uplift system |
| 12/22/1993 | CN1023242C Sintered metal sand screen |
| 12/21/1993 | US5271725 System for pumping fluids from horizontal wells |
| 12/21/1993 | US5271693 Enhanced deep soil vapor extraction process and apparatus for removing contaminants trapped in or below the water table |
| 12/21/1993 | US5271467 Methods and systems for recovering subsurface materials |
| 12/21/1993 | US5271465 Over-pressured well fracturing method |
| 12/21/1993 | US5271463 Method of recovering additional oil from fines and residue recovered from viscous oil reservoirs |
| 12/21/1993 | CA1325380C Liquid removal method, system and apparatus for hydrocarbon producing wells |
| 12/21/1993 | CA1325368C Process and device for hydraulically and selectively controlling at least two tools or instruments of a device |
| 12/15/1993 | EP0574063A1 Gravel packing process with low-viscosity slurry |
| 12/15/1993 | CN2149477Y Numeric-control Numeric control high pressure steam generator on oil well side |
| 12/15/1993 | CN2149476Y Energy-saving apparatus for obtaining oil |
| 12/14/1993 | US5269572 Apparatus and method for coupling elongated members |
| 12/14/1993 | US5269565 Pipeline breakaway protection mechanism |
| 12/14/1993 | US5269376 Method for favoring the production of effluents of a producing zone |
| 12/14/1993 | US5269375 Method of gravel packing a well |
| 12/14/1993 | CA2015460C Process for confining steam injected into a heavy oil reservoir |
| 12/09/1993 | WO1993024733A1 A system for use in offshore petroleum production |
| 12/09/1993 | WO1993024732A1 A system for use in offshore petroleum production |
| 12/09/1993 | WO1993024731A1 A system for use in offshore petroleum production |
| 12/09/1993 | WO1993024727A1 Tubing anchor catcher with rotating mandrel |
| 12/09/1993 | WO1993024248A1 Process and device for extracting highly volatile contaminants from gas-permeable material |
| 12/09/1993 | WO1993024199A1 Method for removing alkaline sulfate scale |
| 12/08/1993 | EP0572818A1 Method and device for rinsing contaminants present in soil |
| 12/08/1993 | CN2148821Y Numeric control batch extracting well head apparatus for oil-well |
| 12/08/1993 | CN1023029C Method for filling water and deoxidizing of oil field |
| 12/07/1993 | US5268112 Silicates, colloidal silica and(or) crosslinked polymer and a base |
| 12/07/1993 | US5267615 Sequential fluid injection process for oil recovery from a gas cap |
| 12/07/1993 | US5267469 Method and apparatus for testing the physical integrity of production tubing and production casing in gas-lift wells systems |
| 12/02/1993 | DE4217331A1 Verfahren und Vorrichtung zum Absaugen leichtflüchtiger Kontaminanten aus gasdurchlässigem Material Method and apparatus for extracting volatile contaminants from a gas permeable material |
| 12/02/1993 | DE4217263A1 Drawing off of ground pore gas samples using probe inserted in ground - sucking gas and transferring to sample vessel only when stable equilibrium exists between components of gas |
| 12/01/1993 | EP0571798A1 Method of removing oil residues or oil-containing liquids from contaminated layers of soil |
| 12/01/1993 | CN1079027A High molecular polymer measuring pump |
| 12/01/1993 | CN1079026A Digit control hydraulic meter high molecular pump |
| 12/01/1993 | CN1078926A Method for separating drilling cuttings from drilling fluid and completion fluid by using electric field |
| 11/30/1993 | US5265980 Junction plate assembly for a subsea structure |
| 11/30/1993 | US5265678 Method for creating multiple radial fractures surrounding a wellbore |
| 11/30/1993 | US5265674 Enhancement of in situ microbial remediation of aquifers |
| 11/30/1993 | CA1324754C Process for assisted production of a viscous effluent contained in a geological formation |
| 11/25/1993 | WO1993023134A1 Linear contaminant remediation system |
| 11/24/1993 | EP0571257A1 Process for the treatment and the transport of natural gas coming from a well |
| 11/24/1993 | EP0570455A1 Compressor system in a subsea station for transporting a well stream. |
| 11/24/1993 | CN2147345Y Composite narrow seam screen pipe for oil and gas extraction |
| 11/24/1993 | CN2147344Y Mechanic automatic direction change double well long distance oil suction machine |
| 11/23/1993 | USRE34451 Perforating gun with auger |
| 11/23/1993 | US5263360 Low permeability subterranean formation testing methods and apparatus |
| 11/23/1993 | CA1324574C Device and method for remote connection and installation of a welded coupler |
| 11/18/1993 | EP0570228A1 Recovery of fuel gases from underground deposits |
| 11/18/1993 | EP0569685A2 Portable self-contained ground water testing assembly |
| 11/16/1993 | US5262065 Purification and decontamination of aquifiers using pumps, pipes and sleeves |
| 11/16/1993 | US5261791 Method and apparatus for recovering pollutants from an aquifer |
| 11/16/1993 | US5261765 Method and apparatus for heating subsurface soil for decontamination |
| 11/16/1993 | US5261492 Well casing apparatus and method |
| 11/16/1993 | US5261490 Method for dumping and disposing of carbon dioxide gas and apparatus therefor |
| 11/16/1993 | US5261489 Two well hydrocarbon producing method |
| 11/16/1993 | US5261486 Method and apparatus for gravel pack well completions |
| 11/16/1993 | US5261348 Flow-through cell with diverter circuit |
| 11/16/1993 | CA2091519A1 Portable self-contained ground water testing assembly |
| 11/11/1993 | WO1993022537A1 Microencapsulated oil field chemicals and process for their use |
| 11/11/1993 | WO1993022536A1 Gravel packing of wells |
| 11/11/1993 | DE4214885A1 Gas piping mercury decontamination - uses external heat to evaporate mercury@ with inert gas flow to carry that vapour through condenser for recovery and collection in safety |
| 11/10/1993 | EP0568742A1 Transfer of production fluid from a well |
| 11/10/1993 | CN2145858Y Electrothermal pumping unit |
| 11/10/1993 | CN1078292A Equipment for separating oil from water in the well |
| 11/10/1993 | CN1078291A Equipment for separating and extracting oil from water in the well |
| 11/10/1993 | CN1022678C Process for preparing sulfur solvent compositions |
| 11/09/1993 | US5259980 Aqueous alkaline solution of polyaminocarboxylic acid and synergistic amount of oxalate anion; strontium/barium sulfates |
| 11/09/1993 | US5259466 Method and apparatus for orienting a perforating string |
| 11/09/1993 | US5259453 Injecting gelling composition of higher density than subterranean formation brine; enhanced oil recovery |
| 11/09/1993 | US5259450 Vented packer for sampling well |
| 11/09/1993 | CA2095764A1 Transfer of production fluid from a well |
| 11/03/1993 | CN1078015A Electrically heated pumping unit |
| 11/03/1993 | CN1078014A Ground contamination remediation process and apparatus |
| 11/02/1993 | US5257665 Method and system for recovering liquids and gas through a well |
| 11/02/1993 | US5257664 Steam injection profile control agent and process |
| 11/02/1993 | US5257663 For use in a well |
| 11/02/1993 | CA2031031C System for the production of crude oil by the injection of treatment fluid |
| 11/02/1993 | CA1323896C Safety switch for explosive well tools |
| 10/28/1993 | WO1993021478A1 Compressing gas flowing through a conduit |
| 10/28/1993 | WO1993021477A1 Compressing combustible gas flowing through a conduit |
| 10/28/1993 | WO1993021442A1 Well pump control system |
| 10/28/1993 | WO1993021419A1 Improved environmental vat |
| 10/28/1993 | WO1993021112A1 Method of reducing the level of contaminant materials in produced subterranean reservoir fluids |
| 10/28/1993 | CA2133707A1 Method of reducing the level of contaminant materials in produced subterranean reservoir fluids |
| 10/26/1993 | US5256729 Nitrile derivative for sand control |
| 10/26/1993 | US5256171 Slug flow mitigtion for production well fluid gathering system |
| 10/26/1993 | US5255745 Remotely operable horizontal connection apparatus and method |