| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 03/24/2004 | EP1399640A1 Rock drilling tool, a ring drill bit and an adapter for percussive drilling |
| 03/24/2004 | EP1399639A2 Sonic drill head |
| 03/24/2004 | EP1399638A1 Hydrothermal drilling method and system |
| 03/24/2004 | EP1047860B1 Apparatus and method for milling through a whipstock in a wellbore |
| 03/24/2004 | EP1012436B1 Drilling tool for down-the-hole drilling, reamer means and body element for use in the tool |
| 03/24/2004 | CN2607434Y Combined hole enlarging bit |
| 03/24/2004 | CN2607433Y Drilling tool assembly for earthquake drilling machine |
| 03/24/2004 | CN1143033C Short aggregate pier techniques |
| 03/23/2004 | US6708783 Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
| 03/23/2004 | US6708782 Method and apparatus for axial alignment of a mud motor's adjustable housing relative to the orientation sub's internal sleeve in a drill string |
| 03/23/2004 | US6708769 Apparatus and methods for forming a lateral wellbore |
| 03/23/2004 | US6708766 Wellhead assembly for communicating with the casing hanger annulus |
| 03/23/2004 | US6708764 Undulating well bore |
| 03/23/2004 | US6708762 Methods and apparatus for forming a lateral wellbore |
| 03/18/2004 | WO2004022913A1 Combined casing expansion / casing while drilling method and apparatus |
| 03/18/2004 | US20040050591 Two stage downhole drilling fluid filter |
| 03/18/2004 | US20040050590 Downhole closed loop control of drilling trajectory |
| 03/18/2004 | DE10241610A1 System for connecting a pipe designed to be pulled into the ground to a pulling device comprises a connecting element, and fixing elements movably arranged relative to each other |
| 03/17/2004 | EP1398455A2 Drilling system including eccentric adjustable diameter blade stabilizer |
| 03/17/2004 | EP1398454A2 Drilling apparatus |
| 03/16/2004 | US6705415 Directional drilling apparatus |
| 03/16/2004 | US6705413 Drilling with casing |
| 03/16/2004 | US6705407 Rock drilling and mounting frame |
| 03/16/2004 | US6705396 Method and apparatus for producing fluid cavitation |
| 03/16/2004 | CA2440996A1 Downhole closed loop control of drilling trajectory |
| 03/16/2004 | CA2212923C Method for sealing the junctions in multilateral wells |
| 03/16/2004 | CA2210562C Apparatus for completing a subterranean well and associated methods of using same |
| 03/11/2004 | WO2004020775A2 Method and apparatus for removing cuttings |
| 03/11/2004 | US20040047234 Method of monitoring a drilling path |
| 03/11/2004 | US20040045741 Borehole stabilization while drilling |
| 03/10/2004 | EP1396585A1 Head for injecting a fluid under pressure from a borehole to disintegrate ground |
| 03/10/2004 | EP1395729A1 Method of forming a trenchless flowline |
| 03/10/2004 | CN1481469A Igniter for oxygen lance for thermal cutting, drilling ETC |
| 03/10/2004 | CN1480592A Special hardware for squeezing, enlarging and fetching out soil as well as processing method |
| 03/09/2004 | US6702940 Device for transporting particles of magnetic material |
| 03/09/2004 | US6702204 Cavitating jet |
| 03/09/2004 | US6702046 Drill device for a drilling apparatus |
| 03/09/2004 | US6702042 Method and device for rotary well drilling |
| 03/09/2004 | US6702040 Telescopic drilling method |
| 03/09/2004 | US6702030 Procedures and equipment for profiling and jointing of pipes |
| 03/09/2004 | US6702029 Tubing anchor |
| 03/09/2004 | US6702025 Hydraulic control assembly for actuating a hydraulically controllable downhole device and method for use of same |
| 03/09/2004 | US6702014 Deflector tool for deflecting items through a window in borehole casing |
| 03/04/2004 | WO2004018925A1 Assembly system for pipe insertion |
| 03/04/2004 | WO2004018830A1 Wash out preventer |
| 03/04/2004 | WO2004018828A1 Reverse circulation directional and horizontal drilling using concentric coil tubing |
| 03/04/2004 | WO2004018827A1 Reverse circulation directional and horizontal drilling using concentric drill string |
| 03/04/2004 | WO2004018826A1 Subsea drilling module for use in drilling of oil and gas wells |
| 03/04/2004 | US20040041713 Controlling an underground object |
| 03/04/2004 | US20040041310 Continuous hot rod |
| 03/04/2004 | US20040040751 Directional drilling apparatus |
| 03/04/2004 | US20040040749 Method and apparatus for removing cuttings |
| 03/04/2004 | US20040040748 Steerable soil displacement hammer |
| 03/03/2004 | EP1394351A2 Apparatus for producing drilled piles |
| 03/03/2004 | EP1392952A1 Apparatus and method for rotary bored drilling |
| 03/03/2004 | EP0900320B1 System and method for placement and retrieval of a subsurface diverting tool used in drilling and completing wells |
| 03/02/2004 | US6698978 Rock drilling rig |
| 03/02/2004 | US6698976 Grouting pipe equipment and method of grouting using the same for an underground water well |
| 03/02/2004 | US6698535 Floating offset transmitter housing underground directional drilling tool |
| 03/02/2004 | US6698534 Direction control in well drilling |
| 03/02/2004 | CA2210563C Apparatus for completing a subterranean well and associated methods of using same |
| 02/26/2004 | WO2004016900A1 Mobile working tool with a tool head |
| 02/26/2004 | WO2004016899A2 Horizontal spool tree wellhead system and method |
| 02/26/2004 | WO2003006778A3 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 02/26/2004 | WO2002084065A3 Drilling head of a drilling device, particularly a wash drilling head of a horizontal drilling device |
| 02/26/2004 | US20040035581 Multilateral well completion |
| 02/26/2004 | US20040035576 Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe |
| 02/25/2004 | EP1390601A2 Method and apparatus for determining drilling paths to directional targets |
| 02/25/2004 | EP1109988B1 Jet excavating device |
| 02/24/2004 | US6695056 System for forming a window and drilling a sidetrack wellbore |
| 02/24/2004 | CA2223517C Mill guide and anchor assembly for subterranean well casings |
| 02/24/2004 | CA2144497C Modular measurement while drilling sensor assembly |
| 02/19/2004 | WO2004015236A1 Directional boring appliance |
| 02/19/2004 | WO2003008755A8 Wear resistant tubular connection |
| 02/19/2004 | US20040031617 Auger/vehicle interface jig |
| 02/19/2004 | US20040031609 Method and system for accessing subterranean deposits from the surface |
| 02/17/2004 | US6693553 Reservoir management system and method |
| 02/17/2004 | US6692194 Method for installing a conductor casing through a suction substructure |
| 02/17/2004 | US6691804 Directional borehole drilling system and method |
| 02/17/2004 | US6691779 Wellbore antennae system and method |
| 02/17/2004 | US6691436 Hand-held device for exposing buried objects |
| 02/17/2004 | CA2234495C Adjustable gauge downhole drilling assembly |
| 02/12/2004 | WO2004013456A1 Drilling arrangement |
| 02/12/2004 | WO2004012912A2 Handheld tool for breaking up rock |
| 02/12/2004 | US20040028476 System and method for automatically drilling and backreaming a horizontal bore underground |
| 02/12/2004 | US20040026128 Drilling assembly with a steering device for coiled-tubing operations |
| 02/12/2004 | US20040026126 Method for drilling with casing |
| 02/12/2004 | DE10238082B3 Device used in the production of bored pile comprises a continuous screw having a screw surface with increased surface roughness facing in the conveying direction and extending over the screw length necessary for conveying material |
| 02/12/2004 | DE10234407A1 Spülflüssigkeitsaufbereitungsgerät Rinsing fluid purification |
| 02/12/2004 | CA2724787A1 Apparatus and methods for anchoring and orienting equipment in well casing |
| 02/11/2004 | CN2603188Y Mechanical fixing type solid side drilling tool |
| 02/10/2004 | USRE38418 Dual member pipe joint for a dual member drill string |
| 02/10/2004 | US6688408 Auger drill directional control system |
| 02/10/2004 | US6688400 Downhole sealing |
| 02/10/2004 | US6688388 Method for accessing subterranean deposits from the surface |
| 02/10/2004 | CA2350504C Method and system for accessing subterranean deposits from the surface |
| 02/10/2004 | CA2207797C Method and apparatus for conditioning fluid flow |
| 02/05/2004 | WO2004011836A2 Apparatus and method to complete a multilateral junction |
| 02/05/2004 | WO2004011766A1 Drilling method |
| 02/05/2004 | WO2004011764A1 Device for simultaneously casing a hole while drilling |