| Patents for E21B 41 - Equipment or details not covered by groups (7,984) |
|---|
| 05/23/2000 | US6065538 Method of obtaining improved geophysical information about earth formations |
| 05/23/2000 | US6065536 Apparatus for setting a liner in a well casing |
| 05/23/2000 | US6065209 Method of fabrication, tooling and installation of downhole sealed casing connectors for drilling and completion of multi-lateral wells |
| 05/23/2000 | CA2290050A1 Intelligent down hole testing system |
| 05/17/2000 | EP1000222A1 Creating zonal isolation between the interior and exterior of a well system |
| 05/17/2000 | EP1000221A1 Electro-hydraulic well tool actuator |
| 05/17/2000 | EP1000219A1 A method of injecting drilling waste into a well while drilling |
| 05/16/2000 | US6062315 Downhole tool motor |
| 05/16/2000 | US6062311 Jetting tool for well cleaning |
| 05/16/2000 | US6062306 Sealed lateral wellbore junction assembled downhole |
| 05/11/2000 | WO2000026501A1 Wellbore system including a conduit and an expandable device |
| 05/10/2000 | EP0999341A2 Method and apparatus for controlling fluid flow in subterranean formations |
| 05/10/2000 | EP0795091B1 A mechanical overload protection device |
| 05/10/2000 | CN2377347Y Self-filling type floating collar and float shoe |
| 05/09/2000 | US6059661 Shaft alignment |
| 05/09/2000 | US6059336 Hydraulically actuated mechanical coupler |
| 05/09/2000 | US6059037 Apparatus for completing a subterranean well and associated methods of using same |
| 05/04/2000 | WO2000024999A1 Downhole activation system |
| 05/04/2000 | WO2000024844A2 Treatments for cuttings from offshore rigs |
| 05/04/2000 | WO1999002815A8 Device and method for creating ramifications in a bore hole |
| 05/03/2000 | EP0997607A2 Vacuum Tank for use in handling oil and gas well cuttings |
| 05/03/2000 | EP0996812A1 Deformed multiple well template and process of use |
| 05/02/2000 | US6056059 Apparatus and method for establishing branch wells from a parent well |
| 05/02/2000 | CA2129563C Interface system for operation of remote control vehicle |
| 04/27/2000 | WO2000023689A1 Gas disposal system |
| 04/26/2000 | EP0871816B1 Release mechanism |
| 04/26/2000 | CN2375764Y Self-discharging tractor hoist |
| 04/25/2000 | US6055213 Subsurface well apparatus |
| 04/25/2000 | US6053254 Method and apparatus for providing selective wellbore access |
| 04/25/2000 | US6053252 Lightweight intervention system |
| 04/25/2000 | US6053249 Method and apparatus for injecting gas into a subterranean formation |
| 04/25/2000 | US6053244 Release mechanism |
| 04/19/2000 | EP0993540A1 Device and method for creating ramifications in a bore hole |
| 04/19/2000 | EP0993539A1 Apparatus for and a method of drilling a lateral borehole |
| 04/18/2000 | US6050131 Method for verifying positive inflation of an inflatable element |
| 04/13/2000 | WO2000020721A1 Hydraulic switch device |
| 04/12/2000 | EP0839254B1 Branch boreholes |
| 04/11/2000 | US6047774 System for drilling and completing multilateral wells |
| 04/06/2000 | DE19941197A1 Controller for horizontal drilling machine derives control signals for driving machine from actual and demanded values taking into account heuristic process steps using fuzzy logic |
| 04/05/2000 | CN1249797A Drilling assembly with reduced stick-slip tendency |
| 04/05/2000 | CN1249796A Removing waste component from hydrocarbon fluid |
| 04/04/2000 | US6046685 Redundant downhole production well control system and method |
| 04/04/2000 | US6046521 Electric submergible motor protector having collapse resistant ribbed elastomeric bag |
| 04/04/2000 | US6045611 Inserting a lithium gallium oxide (ligao2) seed crystal cut in a direction of an angle range of 30 degrees from a b-axis direction into a ligao2 melt, pulling seed crystal by the czochralski method, cutting the c-plane to obtain substrate |
| 04/04/2000 | US6045070 Materials size reduction systems and process |
| 04/04/2000 | US6044905 Chemical stick storage and delivery system |
| 03/30/2000 | WO2000017487A1 Control mechanism for a horizontal drilling machine |
| 03/30/2000 | WO2000017485A1 Device for equipment adapted for waste product injection usage, i.e. cuttings or other environmentally toxic liquids |
| 03/30/2000 | WO2000017483A1 Method and apparatus for relieving pressure |
| 03/29/2000 | EP0989306A1 Compression-pumping system with alternate operation of the compression section and its related process |
| 03/29/2000 | EP0988440A1 Control and monitoring system for chemical treatment of an oilfield well |
| 03/29/2000 | EP0988439A1 Casing annulus remediation system |
| 03/28/2000 | US6044325 Conductivity anisotropy estimation method for inversion processing of measurements made by a transverse electromagnetic induction logging instrument |
| 03/28/2000 | US6042713 Method for removing metal contaminants |
| 03/28/2000 | US6041860 Apparatus and method for performing imaging and downhole operations at a work site in wellbores |
| 03/28/2000 | US6041856 Real-time pump optimization system |
| 03/22/2000 | EP0757632B1 Sensor arrangement for controlling vehicle ventilation systems |
| 03/21/2000 | CA2206675C Trailer mounted power swivel |
| 03/14/2000 | US6035937 Sealed lateral wellbore junction assembled downhole |
| 03/14/2000 | US6035706 Method and apparatus for determining the wax appearance temperature of paraffinic petroleum oils |
| 03/09/2000 | WO2000012860A2 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation |
| 03/09/2000 | WO2000012859A2 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 03/07/2000 | US6032736 Multi-gage blowout preventer test tool and method |
| 03/02/2000 | WO2000010680A1 Apparatus and method for handling waste |
| 02/29/2000 | US6029754 Drill with motor drive and feed |
| 02/29/2000 | US6029747 Through-tubing lateral re-entry |
| 02/29/2000 | US6029746 Self-excited jet stimulation tool for cleaning and stimulating wells |
| 02/23/2000 | CN2365394Y Mud scraper |
| 02/23/2000 | CN1049718C Method and system for controlling vibrations in borehole equipment |
| 02/22/2000 | US6026911 Downhole tools using artificial intelligence based control |
| 02/16/2000 | EP0979921A1 Method for installing an oil production installation |
| 02/16/2000 | CN2364210Y Energy-saving hydraulic device |
| 02/16/2000 | CN2364209Y Casing leak finding device for oil well |
| 02/16/2000 | CN2364208Y Sand washing pipe leak testing device |
| 02/15/2000 | US6024514 Tool, Tool system and method for coupling and installing subsea pipelines |
| 02/09/2000 | CN2363053Y Comprehensive pump vehicle for well cementing and cleaning hole work of oil field |
| 02/08/2000 | US6022176 Tool bit with marking member |
| 02/08/2000 | US6021847 Removing a waste component from a hydrocarbon fluid |
| 02/03/2000 | WO1999060244A9 Multiple lateral hydraulic drilling apparatus and method |
| 02/03/2000 | WO1999058809A3 Coupling with shape-memory material, disconnecting tool with a piston and coupling with valves |
| 02/02/2000 | EP0975992A1 Pressure impulse telemetry apparatus and method |
| 02/02/2000 | CN2361828Y Vehicle-mounted workover rig |
| 02/01/2000 | US6021095 Method and apparatus for remote control of wellbore end devices |
| 01/27/2000 | WO2000004274A1 Downhole multiplexer and related methods |
| 01/27/2000 | WO1999057416A8 Jet cleaning apparatus |
| 01/26/2000 | EP0974066A1 High impact communication and control system |
| 01/26/2000 | CN2360600Y Anti-sand and anti-scade water distributor of water injection well |
| 01/26/2000 | CN2360599Y Self-locking choking ring for well cementation |
| 01/20/2000 | WO2000003112A1 Floating spar for supporting production risers |
| 01/19/2000 | EP0851966A4 System for selective re-entry to completed laterals |
| 01/19/2000 | CN2359461Y Hinge-pin-type anti-theft brake hidden on beam-pumping unit |
| 01/18/2000 | US6015012 In-situ polymerization method and apparatus to seal a junction between a lateral and a main wellbore |
| 01/13/2000 | WO2000001923A1 Wellhead templates |
| 01/13/2000 | WO2000001922A1 Flying lead workover interface system |
| 01/13/2000 | WO2000001915A2 Control system for the workover of oil wells |
| 01/13/2000 | WO2000001894A1 Well riser lateral restraint and installation system for offshore platform |
| 01/11/2000 | US6012528 Method and apparatus for replacing a packer element |
| 01/11/2000 | US6012526 Method for sealing the junctions in multilateral wells |
| 01/11/2000 | US6012520 Hydrocarbon recovery methods by creating high-permeability webs |
| 01/11/2000 | US6012518 Electro-hydraulic well tool actuator |