| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 06/27/2002 | US20020081158 Pile and method for installing same |
| 06/27/2002 | US20020079998 Contacting liquid with matrix carrying ligands comprising a positively charged structure and hydrophobic structure, desorbing substance |
| 06/27/2002 | US20020079106 Procedures and equipment for profiling and jointing of pipes |
| 06/27/2002 | US20020079102 Method and apparatus for multilateral junction |
| 06/26/2002 | EP1217166A1 Method and apparatus for drilling and completing a well |
| 06/26/2002 | EP1216341A2 Torque transmission system for helical drilling tools |
| 06/26/2002 | EP1216340A1 Method and device for construction of an underground pipe duct |
| 06/26/2002 | EP1101013A4 Reverse circulation drilling system with bit locked underreamer arms |
| 06/26/2002 | CN2497034Y High-pressure jetting hole-drilling apparatus |
| 06/26/2002 | CN2497033Y Hand cart type drilling machine |
| 06/25/2002 | US6410085 Method of machining of polycrystalline diamond |
| 06/25/2002 | US6409432 Downhole hammer-type core barrel and method of using same |
| 06/25/2002 | US6408952 Remote lock-out system and method for a horizontal direction drilling system |
| 06/25/2002 | US6408948 Tubing handling for subsea oilfield tubing operations |
| 06/25/2002 | US6408943 Method and apparatus for placing and interrogating downhole sensors |
| 06/20/2002 | WO2002048503A1 Method and apparatus for completing multiple production zones from a single wellbore |
| 06/20/2002 | US20020074168 Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength |
| 06/20/2002 | US20020074166 Method and apparatus for drilling and completing a well |
| 06/20/2002 | US20020074122 Method and apparatus for hydrocarbon subterranean recovery |
| 06/20/2002 | US20020074121 Multilateral well drilling and reentry system and method |
| 06/20/2002 | US20020074120 Method and apparatus for completing multiple production zones from a single wellbore |
| 06/18/2002 | US6405804 Method and apparatus for retrieving a deflecting tool |
| 06/18/2002 | US6405492 Mobile working apparatus |
| 06/13/2002 | WO2002046570A1 Method for the drilling of the initial phase of deep water oil wells with an underwater well head |
| 06/13/2002 | WO2002046569A1 Whipstock orientation system and method |
| 06/13/2002 | WO2002046568A1 Rotary directional drilling device comprising deflecting means with slides |
| 06/13/2002 | WO2002046567A1 Rotary directional drilling device comprising stabilised deflecting means |
| 06/13/2002 | WO2002046566A1 Rotary directional drilling device comprising nacelle deflecting means |
| 06/13/2002 | WO2002046564A2 Boring apparatus |
| 06/13/2002 | WO2001048351A3 Subsea well intervention vessel |
| 06/13/2002 | US20020070049 Drilling system |
| 06/13/2002 | US20020070038 Method and apparatus for vibratory kinetic energy generation and applications thereof |
| 06/13/2002 | US20020070018 Whipstock orientation system and method |
| 06/13/2002 | US20020070013 Method and apparatus for forcing an object through the sidewall of a borehole |
| 06/13/2002 | US20020069725 Design method for drillout bi-center bits |
| 06/13/2002 | DE10159202A1 Boden-Bohrmaschine und dafür verwendeter Stangenaustauscher Ground drill rod exchanger and used therefor |
| 06/13/2002 | DE10146025A1 Pneumatische Felsbohrvorrichtung Pneumatic Felsbohrvorrichtung |
| 06/13/2002 | DE10057380A1 Snap=fit flush boring installation, supported on stand comprising slot fitted collapsible mast supports and collapsible mast |
| 06/13/2002 | DE10051087C1 Material breaking up process involves creating thermal stresses by applying electromagnetic radiation to at least some regions of material to be broken up |
| 06/12/2002 | EP1213441A1 Drilling system |
| 06/12/2002 | EP1212510A1 Downhole latch assembly and method of using the same |
| 06/12/2002 | CN1353792A Method of creating well bore |
| 06/11/2002 | US6401842 Directional drilling apparatus with shifting cam |
| 06/11/2002 | US6401840 Method of extracting and testing a core from a subterranean formation |
| 06/11/2002 | US6401821 Method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores |
| 06/11/2002 | US6401812 Method and apparatus for multilateral well entry |
| 06/11/2002 | CA2225755C Multi-activity offshore exploration and/or development drilling method and apparatus |
| 06/06/2002 | WO2002044602A1 Apparatus and method for inserting and removing a flexible first material into a second material |
| 06/06/2002 | WO2002044511A1 Pneumatic rock-boring device and method for starting such a device |
| 06/06/2002 | WO2002044508A2 Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium |
| 06/06/2002 | US20020067954 Device and method for trenchless replacement of underground pipe |
| 06/06/2002 | US20020066598 Steerable directional drilling reamer |
| 06/06/2002 | US20020066577 Well reference apparatus and method |
| 06/06/2002 | US20020066490 Pipe end fittings |
| 06/06/2002 | DE10053567A1 Vorrichtung zum Erzeugen einer Umfangsbohrung Means for generating a circumferential bore |
| 06/05/2002 | EP1211454A2 Pipe end fittings |
| 06/05/2002 | EP1210497A1 Bit connector |
| 06/05/2002 | EP0851966B1 System for selective re-entry to completed laterals |
| 06/05/2002 | CN1352718A Short aggregate pier techniques |
| 06/04/2002 | US6397956 Directional drilling tool |
| 06/04/2002 | US6397946 Closed-loop system to compete oil and gas wells closed-loop system to complete oil and gas wells c |
| 05/30/2002 | WO2002042605A1 Method of and system for controlling directional drilling |
| 05/30/2002 | US20020064428 Apparatus and method for inserting and removing a flexible first material into a second material |
| 05/30/2002 | US20020062994 Ground drilling machine and rod exchanger utilized therefor |
| 05/30/2002 | US20020062993 Method apparatus for horizontal drilling and oil recovery |
| 05/29/2002 | CN2493735Y Cutting type hole enlarge scraping cutter |
| 05/28/2002 | US6394200 Drillout bi-center bit |
| 05/28/2002 | US6394197 Reverse circulation drilling system with bit locked underreamer arms |
| 05/28/2002 | US6394193 Downhole adjustable bent housing for directional drilling |
| 05/23/2002 | WO2002040819A2 Method for producing a bore and advancing machine for boring |
| 05/23/2002 | WO2001079649A3 Apparatus and method for directional drilling |
| 05/23/2002 | WO2001066900A3 Method and apparatus for directional boring under mixed conditions |
| 05/23/2002 | US20020060914 High frequency power generator and related methods |
| 05/23/2002 | US20020060096 Apparatus to actuate downhole tool |
| 05/23/2002 | US20020060095 Drill bit for directional drilling |
| 05/23/2002 | US20020060078 Forming a wellbore casing while simultaneously drilling a wellbore |
| 05/23/2002 | US20020060073 One-trip milling system |
| 05/23/2002 | US20020060069 Forming a wellbore casing while simultaneously drilling a wellbore |
| 05/23/2002 | US20020060068 Forming a wellbore casing while simultaneously drilling a wellbore |
| 05/23/2002 | DE10054508A1 Miniature well drilling unit, comprising folding mast positioned on top of rotating base moving on tracks |
| 05/21/2002 | US6392561 Short hop telemetry system and method |
| 05/21/2002 | US6390207 Method and apparatus for directional boring under mixed conditions |
| 05/21/2002 | US6390198 Method for running two tubing strings into a well |
| 05/21/2002 | US6390087 Drill bit for directional drilling |
| 05/21/2002 | CA2248287C Fail-safe coupling for a latch assembly |
| 05/16/2002 | WO2002002900A3 Apparatus and method to complete a multilateral junction |
| 05/16/2002 | US20020056574 Stabilizer for use in a drill string |
| 05/16/2002 | US20020056572 Downhole drilling apparatus and method for use of same |
| 05/15/2002 | EP0948701B1 Process and device for simultaneously drilling and lining a hole |
| 05/15/2002 | CN1349585A 磨料射流钻孔组装件 Abrasive jet drilling assembly |
| 05/14/2002 | US6389360 Automated bore planning method and apparatus for horizontal directional drilling |
| 05/14/2002 | US6386300 Formation cutting method and system |
| 05/14/2002 | US6386299 Method and apparatus for reaming pilot hole |
| 05/14/2002 | US6386287 Deviated borehole drilling assembly |
| 05/14/2002 | US6385868 Jet excavating device |
| 05/10/2002 | WO2002036924A2 Rotary steerable drilling tool and method for directional drilling |
| 05/10/2002 | CA2718929A1 Coupling apparatus |
| 05/09/2002 | US20020053471 Intergrated transmitter surveying while boring entrenching powering device for the continuation of a guided bore hole |
| 05/09/2002 | US20020053470 Rotary steerable drilling tool |
| 05/09/2002 | US20020053437 Apparatus for establishing branch wells from a parent well |