| Patents for E21B 41 - Equipment or details not covered by groups (7,984) |
|---|
| 01/11/2000 | US6012516 Deviated borehole drilling assembly |
| 01/06/2000 | WO2000000655A1 Cemented carbide for oil and gas applications |
| 01/04/2000 | US6012015 Control model for production wells |
| 01/04/2000 | US6011557 Method for obtaining a representation of a geological structure |
| 01/04/2000 | US6011346 Apparatus and method for generating electricity from energy in a flowing stream of fluid |
| 01/04/2000 | US6009959 Oil and gas well cuttings disposal system with continuous vacuum operation for sequentially filling disposal tanks |
| 01/04/2000 | US6009949 Apparatus and methods for sealing a wellbore junction |
| 12/28/1999 | US6006844 Method and apparatus for simultaneous coring and formation evaluation |
| 12/28/1999 | US6006832 Method and system for monitoring and controlling production and injection wells having permanent downhole formation evaluation sensors |
| 12/22/1999 | CN2355101Y Aligner for synchronously lifting of oil well tubing and casing |
| 12/22/1999 | CN1239531A Deformed multiple well template and process of use |
| 12/21/1999 | US6003601 Methods of completing a subterranean well and associated apparatus |
| 12/14/1999 | US6002985 Method of controlling development of an oil or gas reservoir |
| 12/14/1999 | US6002063 Apparatus and method for subterranean injection of slurried wastes |
| 12/08/1999 | EP0962623A2 Well completion tool with fluid passages |
| 12/07/1999 | US5999884 Method for determining the axial position of formation layer boundaries using measurements made by a transverse electromagnetic induction logging instrument |
| 12/07/1999 | US5999883 Conductivity anisotropy estimation method for inversion processing of measurements made by a transverse electromagnetic induction logging instrument |
| 12/02/1999 | WO1999061748A1 Boom arrangement for rock drilling apparatus |
| 12/02/1999 | WO1999061307A1 Apparatus and method for deploying an object or a load on the seabed |
| 12/01/1999 | EP0961008A2 Apparatus and method for drilling and completing a deviated borehole |
| 12/01/1999 | EP0961007A2 Expandable wellbore junction |
| 11/30/1999 | US5992524 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| 11/30/1999 | CA2120368C Method and apparatus for sealing the juncture between a vertical and horizontal well |
| 11/25/1999 | WO1999060247A1 Automatic hydrocarbon production management system |
| 11/25/1999 | WO1999060244A1 Multiple lateral hydraulic drilling apparatus and method |
| 11/24/1999 | CN2350522Y Negative pressure blow-off device |
| 11/23/1999 | US5988949 Offshore jacket installation |
| 11/18/1999 | WO1999058809A2 Coupling with shape-memory material, disconnecting tool with a piston and coupling with valves |
| 11/18/1999 | WO1999058479A1 Learning-based controller for biotechnology processing, and method of using |
| 11/17/1999 | CN2349346Y Tool for preventing up push |
| 11/16/1999 | US5984012 Emergency recovery system for use in a subsea environment |
| 11/16/1999 | CA2167277C Formation injection tool for down-bore in-situ disposal |
| 11/11/1999 | WO1999057417A2 Chemical actuation system for downhole tools and method for detecting failure of an inflatable element |
| 11/11/1999 | WO1999057416A1 Jet cleaning apparatus |
| 11/09/1999 | US5983164 Method and apparatus for measuring and controlling the flow of natural gas from gas wells |
| 11/09/1999 | US5979560 Lateral branch junction for well casing |
| 11/09/1999 | US5979552 Dual annulus production tool |
| 11/04/1999 | WO1999039073A3 Method and apparatus for running two tubing strings into a well |
| 11/02/1999 | US5978739 Disconnect information and monitoring system for dynamically positioned offshore drilling rigs |
| 11/02/1999 | US5975803 System and method for connecting together two assemblies which can move one with respect to the other, especially in underwater installations |
| 11/02/1999 | US5975210 Well completion system having a precision cut low profile helix |
| 11/02/1999 | US5975208 Method and apparatus for deploying a well tool into a lateral wellbore |
| 11/02/1999 | US5975204 Method and apparatus for the remote control and monitoring of production wells |
| 10/27/1999 | EP0952302A2 Downhole force generator |
| 10/26/1999 | US5971307 Rotary grinder |
| 10/26/1999 | US5971084 Cuttings tank apparatus |
| 10/26/1999 | US5971074 Methods of completing a subterranean well and associated apparatus |
| 10/26/1999 | US5971073 Methods of completing a subterranean well and associated apparatus |
| 10/21/1999 | WO1999042699A3 Well lock with multiple shear planes |
| 10/12/1999 | US5965964 For generating current in a wellbore |
| 10/12/1999 | US5964291 Fracturing using high pressure fluid and proppant particles |
| 10/12/1999 | US5964288 Radial deformable flexible tube |
| 10/12/1999 | US5964287 To communicate well tools between a first and second wellbore |
| 10/07/1999 | WO1999050528A1 Drillstring with stabilisers for re-entering a primary wellbore |
| 10/05/1999 | US5963138 Apparatus and method for self adjusting downlink signal communication |
| 10/05/1999 | US5961438 Method and apparatus for the injection disposal of solid and liquid waste materials into subpressured earth formations penetrated by a borehole |
| 10/05/1999 | US5961094 Method and apparatus for replacing a packer element |
| 10/05/1999 | US5960883 Power management system for downhole control system in a well and method of using same |
| 10/05/1999 | US5960878 Methods of protecting well tubular goods from corrosion |
| 09/28/1999 | US5959547 Well control systems employing downhole network |
| 09/28/1999 | US5959380 Prevention of particle accumulation between rotatable components of an electrical machine |
| 09/21/1999 | US5955666 Satellite or other remote site system for well control and operation |
| 09/21/1999 | US5954134 Methods of completing a subterranean well and associated apparatus |
| 09/16/1999 | WO1999046475A1 Oil and gas well cuttings disposal system with continuous vacuum operation for sequentially filling disposal tanks |
| 09/11/1999 | CA2265039A1 Apparatus for removal of milling debris |
| 09/10/1999 | WO1999045236A1 Formation testing apparatus and method |
| 09/10/1999 | WO1999045234A1 A non-rotating sensor assembly for measurement-while-drilling |
| 09/07/1999 | US5947213 In a well bore |
| 09/07/1999 | US5947051 Underwater self-propelled surface adhering robotically operated vehicle |
| 09/02/1999 | WO1999044168A1 Method for measuring and controlling the flow of natural gas from gas wells |
| 09/02/1999 | WO1999043924A1 Energy recovery in a wellbore |
| 09/02/1999 | WO1999023349A8 Device for connecting a manifold module and a structure on a seabed |
| 08/31/1999 | USRE36282 Drilling a bore hole; withdrawal fluids; separation |
| 08/31/1999 | US5944195 Method for separation of solids from drilling fluids by magnetic separation and centrifugation |
| 08/31/1999 | US5944109 Method of completing and producing a subteranean well and associated |
| 08/31/1999 | US5944108 Method for multi-lateral completion and cementing the juncture with lateral wellbores |
| 08/31/1999 | US5944107 Method and apparatus for establishing branch wells at a node of a parent well |
| 08/26/1999 | WO1999042699A2 Well lock with multiple shear planes |
| 08/26/1999 | WO1999042696A1 Method and system for drilling and completing underbalanced multilateral wells |
| 08/25/1999 | EP0937861A2 Apparatus and methods for completing a wellbore |
| 08/24/1999 | US5941308 Flow segregator for multi-drain well completion |
| 08/24/1999 | US5941307 Production well telemetry system and method |
| 08/24/1999 | US5941305 Real-time pump optimization system |
| 08/23/1999 | CA2262318A1 Non-intrusive insert tool control |
| 08/18/1999 | EP0936345A1 Method of protecting well tubular goods from corrosion |
| 08/18/1999 | EP0807201B1 Multiple drain drilling and production apparatus |
| 08/17/1999 | US5939667 Subsea thermoelectric generator with thermoelectric modules disposed in sleeves |
| 08/17/1999 | US5937947 Method and apparatus for preventing environmental contamination due to fluid leakage from a wellhead |
| 08/17/1999 | US5937945 Computer controlled gas lift system |
| 08/12/1999 | WO1999040292A1 Cleaning of drill cuttings and apparatus therfor |
| 08/12/1999 | WO1999020869A3 Equalizing subsurface safety valve with injection system |
| 08/12/1999 | CA2319016A1 Cleaning of drill cuttings and apparatus therefor |
| 08/11/1999 | EP0935051A2 Method of forming a wellbore junction |
| 08/10/1999 | US5934371 Remotely controlled shut-off valve and variable choke assembly |
| 08/10/1999 | CA2061701C Electric power supply for use downhole |
| 08/05/1999 | WO1999039073A2 Method and apparatus for running two tubing strings into a well |
| 08/05/1999 | DE19823401C1 Method for cleaning chimney stack |
| 08/05/1999 | CA2260616A1 Lateral wellbore connection |
| 08/03/1999 | US5931442 Submersible work vessel for installing a blow out preventer |
| 08/03/1999 | CA2134980C Microencapsulated oil field chemicals and process for their use |