| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 06/13/2000 | US6073691 Torque resistant retrievable whipstock |
| 06/13/2000 | CA2179184C Whipstock apparatus and methods of use |
| 06/08/2000 | WO2000032902A1 Downhole apparatus and method for milling a window and at least one key-way in a well casing |
| 06/07/2000 | EP1006322A2 Method of inserting a heat exchanger into the ground and ground heat exchanger |
| 06/07/2000 | EP1006260A2 Drilling liner systems |
| 06/07/2000 | EP1006256A2 A method of determining the walk rate of a rotary drag-type drill bit |
| 06/07/2000 | EP1005602A1 Drilling system with means for anchoring in the borehole |
| 06/07/2000 | EP0900320A4 System and method for placement and retrieval of a subsurface diverting tool used in drilling and completing wells |
| 06/07/2000 | EP0715679B1 Arrangement for mounting slides |
| 06/07/2000 | CN2381762Y Flexible drill for horizontally drilling |
| 06/07/2000 | CN1053244C Shaped pile hole blasting monolithic forming method |
| 06/06/2000 | US6070667 Lateral wellbore connection |
| 06/06/2000 | US6070665 Wellbore milling |
| 06/06/2000 | US6070662 Formation pressure measurement with remote sensors in cased boreholes |
| 06/02/2000 | WO2000031376A2 Method and system for accessing subterranean deposits from the surface |
| 06/02/2000 | WO2000031375A1 Lateral branch junction for well casing |
| 06/02/2000 | WO2000031370A1 Method for installing tubular members axially into an over-pressured region of the earth |
| 06/02/2000 | CA2792184A1 Method and system for accessing subterranean deposits from the surface |
| 06/02/2000 | CA2351339A1 Lateral branch junction for well casing |
| 05/30/2000 | US6068426 Method of connecting conduits |
| 05/30/2000 | US6068069 Multi-activity offshore exploration and/or development drilling method and apparatus |
| 05/25/2000 | WO2000029713A2 Method and apparatus for connecting a lateral branch liner to a main well bore |
| 05/24/2000 | EP1002932A2 Process and device for trenchless replacement of conduits |
| 05/23/2000 | US6065683 Method and apparatus for conditioning fluid flow |
| 05/23/2000 | US6065551 Method and apparatus for rotary mining |
| 05/23/2000 | US6065550 Method and system for drilling and completing underbalanced multilateral wells utilizing a dual string technique in a live well |
| 05/23/2000 | US6065209 Method of fabrication, tooling and installation of downhole sealed casing connectors for drilling and completion of multi-lateral wells |
| 05/18/2000 | WO2000028188A1 Self-controlled directional drilling systems and methods |
| 05/17/2000 | EP0759115B1 Device for controlling the drilling direction of drill bit |
| 05/16/2000 | US6062650 Continuous control system for a mining or tunnelling machine |
| 05/16/2000 | US6062326 Casing shoe with cutting means |
| 05/16/2000 | US6062311 Jetting tool for well cleaning |
| 05/11/2000 | WO2000026576A1 Method and device in down-the-hole drilling |
| 05/11/2000 | WO2000026499A1 Method and apparatus for remote control of a tubing exit sleeve |
| 05/09/2000 | US6059661 Shaft alignment |
| 05/09/2000 | US6059050 Apparatus for controlling relative rotation of a drilling tool in a well bore |
| 05/09/2000 | US6059037 Apparatus for completing a subterranean well and associated methods of using same |
| 05/04/2000 | WO1999002815A8 Device and method for creating ramifications in a bore hole |
| 05/03/2000 | EP0996812A1 Deformed multiple well template and process of use |
| 05/03/2000 | EP0811105B1 Plasma blasting probe assembly |
| 05/02/2000 | US6056071 Multi-activity offshore exploration and/or development drilling method and apparatus |
| 05/02/2000 | US6056065 Motorized auger |
| 05/02/2000 | US6056059 Apparatus and method for establishing branch wells from a parent well |
| 05/02/2000 | US6056056 Whipstock mill |
| 04/30/2000 | CA2270720A1 Dynamic orienting reference system for directional drilling |
| 04/27/2000 | DE19820483C1 Verfahren und Vorrichtung zur Erstellung gesteuerter Hausanschlüsse Method and apparatus for creating controlled house connections |
| 04/26/2000 | EP0973992A4 Subsurface probe system for chemical and mineral exploration |
| 04/26/2000 | EP0952899A4 Device for trenchless replacement of underground pipe |
| 04/25/2000 | US6053261 Flow pulsing method and apparatus for the increase of the rate of drilling |
| 04/25/2000 | US6053254 Method and apparatus for providing selective wellbore access |
| 04/25/2000 | CA2184888C Milling apparatus and method for well casing |
| 04/25/2000 | CA2091529C Directional drilling apparatus |
| 04/20/2000 | WO2000004269A3 Subsea wellbore drilling system for reducing bottom hole pressure |
| 04/19/2000 | EP0994236A2 Indexing 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 |
| 04/19/2000 | EP0993538A1 Downhole mud motor |
| 04/19/2000 | EP0824625B1 Method and apparatus for blasting hard rock |
| 04/18/2000 | US6050352 Drilling technique utilizing drilling fluids directed on low angle cutting faces |
| 04/18/2000 | US6050351 Drilling hole system for horizontal boreholes |
| 04/18/2000 | US6050350 Underground directional drilling steering tool |
| 04/18/2000 | US6050348 Drilling method and apparatus |
| 04/18/2000 | US6050334 Single trip whipstock assembly |
| 04/18/2000 | CA2034001C Device for guiding a drilling tool within a well and for applying a hydraulic force to said tool |
| 04/13/2000 | DE19836389C1 Bohrvorrichtung mit Doppelschlagsystem Drilling device with dual shock system |
| 04/12/2000 | EP0991845A1 Earth formation surveying device |
| 04/12/2000 | EP0839254B1 Branch boreholes |
| 04/12/2000 | CN1051350C Excavator |
| 04/11/2000 | US6047784 Apparatus and method for directional drilling using coiled tubing |
| 04/11/2000 | US6047781 Multi-activity offshore exploration and/or development drilling method and apparatus |
| 04/11/2000 | US6047774 System for drilling and completing multilateral wells |
| 04/06/2000 | WO1999064712A8 Directional drilling system and apparatus |
| 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 |
| 04/06/2000 | CA2249729A1 Producing fluids from subterranean formations through lateral wells |
| 04/05/2000 | CN1249392A Measurement of rock pressure using distance sensor in casing drilling |
| 03/30/2000 | WO2000017487A1 Control mechanism for a horizontal drilling machine |
| 03/30/2000 | WO2000016950A1 A device for the making of holes and/or demolition in concrete or the like |
| 03/29/2000 | CN2371328Y Movable shaft type guide for drilling well |
| 03/29/2000 | CN1248661A Deviation prevention-angle-dropping stabilizer |
| 03/28/2000 | US6041855 High torque pressure sleeve for easily drillable casing exit ports |
| 03/23/2000 | WO2000015941A1 Through-tubing retrievable whipstock system |
| 03/22/2000 | EP0986499A1 Trenchless replacement of underground piping |
| 03/21/2000 | US6039505 Technique for administering a lubricant in an underground pipe replacement system |
| 03/21/2000 | CA2206675C Trailer mounted power swivel |
| 03/16/2000 | DE19842181A1 Device for creation of subterraneous culvert, comprising of tool head permanently joined to inner linkage, and movable attached to outer linkage |
| 03/16/2000 | CA2246654A1 The postarm drill system |
| 03/15/2000 | CN1247269A Method and facilities for drilling well, logging and early trial production at same time |
| 03/15/2000 | CN1050403C Automatic pressure unit |
| 03/14/2000 | US6035953 Down hole hammer assembly |
| 03/14/2000 | US6035949 Methods for installing a well in a subterranean formation |
| 03/14/2000 | US6035939 Wellbore anchor system |
| 03/14/2000 | US6035937 Sealed lateral wellbore junction assembled downhole |
| 03/14/2000 | CA2021781C Device for positioning of a drill bit |
| 03/09/2000 | DE19910292A1 Ground boring ram directed by steering head twists head relative ram housing through indicated angle to change from straightening to curved drivage. |
| 03/09/2000 | DE19849611C1 Production of ground bores and-or destruction of old pipe conduits underground |
| 03/08/2000 | EP0984135A2 Formation pressure measurement with remote sensors in cased boreholes |
| 03/08/2000 | EP0843774A4 Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 03/07/2000 | US6033152 Pile forming apparatus |
| 03/02/2000 | WO2000011312A1 Grouting pipe equipment and method of grouting using the same for an underground water well |
| 03/02/2000 | WO2000011307A1 Method of forming conductor casings |