| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 05/08/2002 | EP1203183A1 Cutting head |
| 05/08/2002 | DE10054659A1 Pipe laying machine, includes boring and inner drilling tubes with screw conveyors for rotary and percussion drilling |
| 05/08/2002 | DE10052574A1 Lenkbare Erdrakete Steerable Erdrakete |
| 05/08/2002 | DE10050407C1 Vorrichtung zum Aufweiten einer Rohrleitung Apparatus for expanding a pipeline |
| 05/07/2002 | US6382330 Apparatus and method for controlling an underground boring machine |
| 05/02/2002 | WO2002035056A2 Downhole generator for horizontal directional drilling |
| 05/02/2002 | WO2002035052A1 Rock drilling apparatus |
| 05/02/2002 | WO2002035050A1 Device for producing a peripheral hole |
| 05/02/2002 | WO2002035049A1 Steerable soil displacement hammer |
| 05/02/2002 | WO2002035048A1 Solid-state inertial navigation control system for a horizontal drilling machine |
| 05/02/2002 | WO2002034653A1 Device for transporting particles of magnetic material |
| 05/02/2002 | US20020050410 Directional well drilling |
| 05/02/2002 | US20020050360 Forming a wellbore casing while simultaneously drilling a wellbore |
| 05/02/2002 | EP0740737B1 Method and apparatus for plasma blasting |
| 05/02/2002 | EP0685603B1 Multi-shaft excavating device |
| 05/02/2002 | DE10047526A1 Well sinking as shaft and sealed-off pipes lowers shaft then walled and bottom-sealed to make filled flow structure whose drilled pipe run is parted from walls and raised to run sealably pluggable pipes off both sides. |
| 05/02/2002 | CA2426051A1 Rock drilling apparatus |
| 05/01/2002 | CN1347186A Improved coring drill motor and method for obtaining core sample of matter |
| 04/30/2002 | US6378629 Boring apparatus |
| 04/30/2002 | US6378626 Balanced torque drilling system |
| 04/25/2002 | WO2002033217A1 Device for performing hydrodynamic action on wellbore walls |
| 04/25/2002 | US20020046882 Irregular surface drill rod for a directional drilling machine |
| 04/24/2002 | CN1083523C Method and apparatus for drilling and re-entering multiple lateral branches in well |
| 04/23/2002 | US6375389 Method for fitting drainage devices into the soil, and drainage pipes for carrying out said method |
| 04/23/2002 | US6374924 Downhole drilling apparatus |
| 04/23/2002 | US6374918 In-tubing wellbore sidetracking operations |
| 04/18/2002 | WO2002031398A1 Device for expanding a pipeline |
| 04/18/2002 | WO2002031313A1 A drilling tool used in horizontal drilling applications |
| 04/18/2002 | WO2002014644A3 Method and device for introducing tools or instruments into earth formations |
| 04/18/2002 | US20020045059 High volume density polycrystalline diamond with working surfaces depleted of catalyzing material |
| 04/18/2002 | US20020044839 Tubular piling apparatus and method |
| 04/18/2002 | US20020043408 Drill bit for directional drilling |
| 04/18/2002 | US20020043406 Method and apparatus for directional boring under mixed conditions |
| 04/18/2002 | US20020043404 Erectable arm assembly for use in boreholes |
| 04/18/2002 | US20020043372 Steerable rotary drilling device and directional drilling method |
| 04/17/2002 | EP1144795A4 Downhole mud motor transmission |
| 04/16/2002 | US6371683 Stakedown assembly coupling for a horizontal directional drill |
| 04/16/2002 | US6371223 Drill head for directional boring |
| 04/16/2002 | US6371221 Coring bit motor and method for obtaining a material core sample |
| 04/16/2002 | US6371209 Casing installation and removal apparatus and method |
| 04/16/2002 | US6371203 Method of creating a wellbore in an underground formation |
| 04/16/2002 | US6371003 Enclosures for installation on the seabed |
| 04/11/2002 | WO2000052294A9 Drill head for directional boring |
| 04/11/2002 | US20020040787 Forming a wellbore casing while simultaneously drilling a wellbore |
| 04/10/2002 | EP1194675A1 Steerable rotary drilling device and directional drilling method |
| 04/09/2002 | US6368021 Pile and method for installing same |
| 04/09/2002 | US6367564 Apparatus and method for providing electrical transmission of power and signals in a directional drilling apparatus |
| 04/09/2002 | US6367366 Sensor assembly |
| 04/04/2002 | WO2001077480A3 Apparatus to actuate downhole tool |
| 04/04/2002 | WO2000063521A9 Method and apparatus for accurate milling of windows in well casings |
| 04/03/2002 | EP0993540B1 Device and method for creating ramifications in a bore hole |
| 04/03/2002 | CN1343281A Drill for making wide diameter and high depth holes and method for carrying out said holes |
| 04/03/2002 | CN1082114C Vibration exciter machine |
| 04/02/2002 | US6364418 Cutting heads for horizontal remote mining system |
| 04/02/2002 | US6364038 Downhole flexible drive system |
| 04/02/2002 | US6364037 Apparatus to actuate a downhole tool |
| 04/02/2002 | US6364034 Directional drilling apparatus |
| 03/28/2002 | WO2002025061A1 Apparatus for drilling large bore holes in rock and soil |
| 03/28/2002 | WO2002025053A1 Formation cutting method and system |
| 03/28/2002 | US20020036102 Method and rock drilling apparatus for controlling rock drilling |
| 03/28/2002 | US20020036101 Arrangement in rock drilling apparatus |
| 03/28/2002 | DE10045928A1 Assembly to mix a fluid with solid materials, directs the solid matter to one side for the fluid stream to strike it at a collision angle for the fluid droplets to penetrate through the solids to give a homogenous mixture |
| 03/28/2002 | CA2632860A1 Formation cutting method and system |
| 03/27/2002 | EP1190155A1 Rock drill and mounting frame |
| 03/27/2002 | EP1129272A4 Method and apparatus for remote control of a tubing exit sleeve |
| 03/27/2002 | EP0873465B1 Trenchless underground boring system with boring tool location |
| 03/27/2002 | CN2483501Y Deep drilling machine vehicle for petroleum or mine prospection |
| 03/27/2002 | CN2483500Y Walking type drilling machine with stretchable chassis |
| 03/27/2002 | CN2483498Y Water tap parts of deep drilling vehicle for petroleum prospection |
| 03/27/2002 | CN1342242A Metal molten drilling method |
| 03/27/2002 | CN1081718C Underwater installation and method for building same |
| 03/27/2002 | CN1081715C Drill means |
| 03/26/2002 | US6360821 Combination whipstock and anchor assembly |
| 03/26/2002 | CA2047555C Process and drilling equipment for sinking a well in underground rock formations |
| 03/21/2002 | WO2002023008A2 Methods and apparatus for forming a lateral wellbore |
| 03/21/2002 | US20020034632 Polycrystalline diamond partially depleted of catalyzing material |
| 03/21/2002 | US20020034631 High volume density polycrystalline diamond with working surfaces depleted of catalyzing material |
| 03/21/2002 | US20020033383 Machining of polycrystalline diamond |
| 03/21/2002 | US20020033282 Rotary drill bit |
| 03/21/2002 | US20020033077 Rotary drill bit design method |
| 03/20/2002 | EP0986499A4 Trenchless replacement of underground piping |
| 03/20/2002 | EP0901559A4 Multicut window mill |
| 03/20/2002 | EP0901558A4 Sectional drive system |
| 03/19/2002 | US6357965 Method, system and device for building a wall in the ground |
| 03/19/2002 | US6357537 Directional drilling machine and method of directional drilling |
| 03/19/2002 | US6357523 Drainage pattern with intersecting wells drilled from surface |
| 03/14/2002 | WO2002020935A1 Bit for horizontal directional boring |
| 03/14/2002 | US20020030398 Method and system for mining hydrocarbon-containing materials |
| 03/14/2002 | US20020029908 Electrically sequenced tractor |
| 03/14/2002 | US20020029907 Coiled tubing drilling rig |
| 03/14/2002 | US20020029889 Deviated borehole drilling assembly |
| 03/14/2002 | DE10041145A1 Drillhead or string positions and deviation are found by laser pathmeter with polarisation filter and prisms for monitored display for command formulation. |
| 03/14/2002 | CA2434956A1 Bit for horizontal directional boring |
| 03/13/2002 | EP1186742A2 Method, system and device for building a wall in the ground |
| 03/13/2002 | CN1340128A Hydraulic underreamer and sections for use therein |
| 03/13/2002 | CN1080813C Method for attaching a casing to a drill bit in overburden drilling equipment |
| 03/12/2002 | US6354766 Methods for forming a short aggregate pier and a product formed from said methods |
| 03/12/2002 | US6354384 Surface effect drilling craft for obtaining continuous core samples |
| 03/12/2002 | US6354375 Lateral well tie-back method and apparatus |
| 03/07/2002 | WO2002018741A1 A drilling device using a jet of high pressure |