| Patents for E21B 41 - Equipment or details not covered by groups (7,984) |
|---|
| 07/29/1999 | WO1999037396A1 Microencapsulated drag reducing agents |
| 07/28/1999 | CN1224515A Adaptive object-oriented optimization software system |
| 07/28/1999 | CN1224442A Fuel additives |
| 07/27/1999 | US5929540 Switching circuit for switching the mode of operation of a subterranean probe and method of switching |
| 07/27/1999 | US5929372 Thermoelectric generator |
| 07/27/1999 | US5927405 For insertion into a well to displace well fluid |
| 07/22/1999 | WO1999037017A1 Variable output rotary power generator |
| 07/22/1999 | WO1999036659A1 A method and an arrangement for detecting and localizing foul matter internally in a pipe string |
| 07/14/1999 | EP0928363A1 Method of installing tubing into a lateral borehole |
| 07/13/1999 | US5922652 Microencapsulated oil field chemicals |
| 07/13/1999 | US5921713 Method for connecting underwater pipelines particularly suitable for great depths and big diameters |
| 07/13/1999 | CA2133161C Electronic blast control system for downhole well operations |
| 07/07/1999 | EP0927811A1 System for sealing the intersection between a primary and a branch borehole |
| 07/06/1999 | US5919036 Method and apparatus for burning combustible gases |
| 06/29/1999 | US5915474 Multiple drain drilling and production apparatus |
| 06/24/1999 | WO1999031295A1 Method for inhibiting microbially influenced corrosion |
| 06/23/1999 | CN2325509Y Walking beam type well pumping unit having swing link |
| 06/22/1999 | US5913372 Oil and gas well cuttings disposal system with continuous vacuum operation for sequentially filling disposal tanks |
| 06/17/1999 | WO1999030001A1 Anchoring mechanism for a guide post |
| 06/17/1999 | CA2315421A1 Anchoring mechanism for a guide post |
| 06/15/1999 | US5911684 System for geothermal production of electricity |
| 06/09/1999 | EP0921268A2 Apparatus for cleaning well tubular members |
| 06/09/1999 | EP0861309A4 Method for extracting oil from oil-contaminated soil |
| 06/09/1999 | EP0804665A4 Telescopic flare pipe tower |
| 06/08/1999 | CA2180047C Internal pressure sleeve for use with easily drillable exit ports |
| 06/01/1999 | US5908040 Method of cleaning boats that have been contaminated with oil and gas well drilling fluids and hazardous waste |
| 05/27/1999 | WO1999025611A1 Submersible work vessel for installing a blow out preventer |
| 05/14/1999 | WO1999023350A1 Method and device for mounting of a seabed installation |
| 05/14/1999 | WO1999023349A1 Device for connecting a manifold module and a structure on a seabed |
| 05/06/1999 | WO1999022113A1 Method and apparatus for the transport and storage of drill cuttings |
| 04/29/1999 | WO1999020869A2 Equalizing subsurface safety valve with injection system |
| 04/28/1999 | EP0910725A1 Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/27/1999 | US5896927 Stabilizing and cementing lateral well bores |
| 04/27/1999 | US5896924 Computer controlled gas lift system |
| 04/22/1999 | WO1999019751A1 Method and apparatus for drill stem data transmission |
| 04/22/1999 | CA2305161A1 Method and apparatus for drill stem data transmission |
| 04/21/1999 | EP0909872A2 Electrical submergible motor protector |
| 04/21/1999 | CN1214754A Method of assaying downhole occurrences and conditions |
| 04/14/1999 | EP0909008A2 Downhole current generator |
| 04/13/1999 | US5893416 Porous ceramic beads; tubular filter inhibiting corrosion and sclae formation |
| 04/07/1999 | EP0906969A1 Procces and composition for inhibiting corrosion |
| 04/06/1999 | US5892148 Method of leak testing an underground fluid-storage cavity |
| 04/01/1999 | CA2249171A1 Method and composition for inhibiting corrosion |
| 03/30/1999 | US5887667 Method and means for drilling an earthen hole |
| 03/30/1999 | US5887657 Pressure test method for permanent downhole wells and apparatus therefore |
| 03/24/1999 | EP0902824A1 Fuel additives |
| 03/23/1999 | US5884715 Method and apparatus for injecting drilling waste into a well while drilling |
| 03/23/1999 | US5884704 Methods of completing a subterranean well and associated apparatus |
| 03/23/1999 | US5884700 Interior coating of gas well tubing |
| 03/23/1999 | CA2245410A1 Triple action pumping system |
| 03/18/1999 | WO1999013195A1 Apparatus and method for installing a branch junction from a main well |
| 03/16/1999 | US5882187 Portable flare tank |
| 03/11/1999 | WO1999011518A1 Apparatus for a mobile installation, especially an offshore vessel |
| 03/10/1999 | EP0900915A2 Methods of completing and producing a subterranean well and associated apparatus |
| 03/10/1999 | EP0900911A2 Methods of completing and producing a subterranean well and associated apparatus |
| 03/10/1999 | EP0900320A1 System and method for placement and retrieval of a subsurface diverting tool used in drilling and completing wells |
| 03/10/1999 | CN2310156Y Hydraulic pipe adding device for oil-gas well |
| 03/03/1999 | EP0898737A1 Adaptive objet-oriented optimization software system |
| 03/02/1999 | US5875852 Apparatus and associated methods of producing a subterranean well |
| 03/02/1999 | US5875847 Multilateral sealing |
| 02/24/1999 | EP0897456A2 Multi-lateral wellbore systems and methods for forming same |
| 02/16/1999 | US5871304 For use in a wet well |
| 02/16/1999 | US5871049 Control of fine particulate flowback in subterranean wells |
| 02/11/1999 | WO1999006670A1 Creating zonal isolation between the interior and exterior of a well system |
| 02/11/1999 | WO1999006668A1 A method of injecting drilling waste into a well while drilling |
| 02/11/1999 | WO1999006326A1 Method for inhibiting biogenic sulfide generation |
| 02/10/1999 | EP0896124A1 System of multiple-purpose tools for the connection of pipes |
| 02/09/1999 | US5868210 Method for recovering hydrocarbons from earth formations |
| 02/09/1999 | US5868203 Apparatus and method for subsea connections of trees to subsea wellheads |
| 02/09/1999 | US5868201 Computer controlled downhole tools for production well control |
| 02/08/1999 | CA2244550A1 Multi-tool system that can be used for connecting pipes |
| 02/04/1999 | WO1999005392A1 Method and apparatus for removing oil from oil-contaminated particulate material as e.g. waste drilling mud |
| 02/04/1999 | WO1999005390A1 Releasable connector assembly for a perforating gun |
| 02/04/1999 | WO1998050680A3 Monitoring of downhole parameters and tools utilizing fiber optics |
| 01/28/1999 | WO1999004135A1 Deformed multiple well template and process of use |
| 01/28/1999 | WO1999004134A1 Cuttings injection system |
| 01/27/1999 | EP0893571A2 Device for steering a drill string |
| 01/21/1999 | WO1999002819A1 Computer controlled injection wells |
| 01/21/1999 | WO1999002815A1 Device and method for creating ramifications in a bore hole |
| 01/20/1999 | EP0853508A4 A method for introducing materials into a solid or semi-solid medium |
| 01/19/1999 | US5862513 Systems and methods for forward modeling of well logging tool responses |
| 01/19/1999 | US5860907 Method for in situ remediation of waste through multi-point injection |
| 01/19/1999 | CA2120366C Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells |
| 01/06/1999 | CN1204378A Fluid drilling system |
| 01/05/1999 | CA2164464C Offshore well gas disposal |
| 12/29/1998 | US5854991 Method for inversion processing of transverse electromagnetic induction well logging measurements |
| 12/29/1998 | US5853619 Low toxic corrosion inhibitor |
| 12/29/1998 | US5853048 Control of fine particulate flowback in subterranean wells |
| 12/23/1998 | WO1998058151A1 Apparatus for and a method of drilling a lateral borehole |
| 12/17/1998 | WO1998057031A1 System for drilling and completing multilateral wells |
| 12/17/1998 | WO1998057030A1 Control and monitoring system for chemical treatment of an oilfield well |
| 12/17/1998 | WO1998057028A1 Casing annulus remediation system |
| 12/17/1998 | DE19729809C1 Vorrichtung und Verfahren zum Herstellen von Bohrlochverzweigungen Apparatus and method for producing borehole branches |
| 12/16/1998 | EP0883729A1 Moling apparatus and a ground sensing system therefor |
| 12/10/1998 | WO1998055731A1 Electro-hydraulic well tool actuator |
| 12/08/1998 | US5846440 Apparatus and method for handling waste |
| 12/08/1998 | US5845710 Methods of completing a subterranean well |
| 12/08/1998 | US5845707 Method of completing a subterranean well |
| 12/02/1998 | EP0881357A2 Method for controlling the development of an oil or gas reservoir |
| 12/01/1998 | US5842529 Oil and gas well cuttings disposal system |