Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 7 - Special methods or apparatus for drilling
Patents for E21B 7 - Special methods or apparatus for drilling (22,064)
08/2003
08/19/2003US6607044 Three dimensional steerable system and method for steering bit to drill borehole
08/19/2003US6606923 Design method for drillout bi-center bits
08/14/2003WO2003067137A1 Conduit pipe
08/14/2003WO2003067022A1 A mining or tunnelling device
08/14/2003WO2003067018A2 Well system
08/14/2003US20030153468 Integrated subsea power pack for drilling and production
08/14/2003US20030152428 Method and apparatus for on-grade boring
08/14/2003US20030151298 Equipment for drilling vertical boreholes
08/14/2003US20030150652 Steerable horizontal subterranean drill bit having elevated wear protector receptacles
08/14/2003US20030150651 Steerable horizontal subterranean drill bit having offset cutting tooth paths
08/14/2003US20030150650 Steerable horizontal subterranean drill bit having an offset drilling fluid seal
08/14/2003US20030150649 Steerable horizontal subterranean drill bit having a one bolt attachment system
08/14/2003US20030150619 Hydraulic control assembly for actuating a hydraulically controllable downhole device and method for use of same
08/14/2003CA2755094A1 Well system
08/13/2003CN1117914C Drilling method and device
08/13/2003CN1117913C Rotary impacting device for directional drilling in rock
08/12/2003US6606032 Controlling a sonde carried by a boring tool
08/12/2003US6604763 Expandable connector
08/12/2003US6604586 Drilling apparatus
08/12/2003US6604580 Method and system for accessing subterranean zones from a limited surface area
08/07/2003US20030147700 Device and method for trenchless replacement of underground pipe
08/07/2003US20030146022 Self-controlled directional drilling systems and methods
08/07/2003US20030146021 Post hole digger
08/06/2003EP1332269A1 Device for producing a peripheral hole
08/05/2003US6601662 Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength
08/05/2003US6601658 Control method for use with a steerable drilling system
08/05/2003US6601656 Method and apparatus for drilling an offshore underwater well
07/2003
07/31/2003US20030141114 Drill bit for trenchless drilling
07/31/2003US20030141112 Method and apparatus for drilling wells
07/31/2003US20030141111 Drilling method
07/31/2003US20030141063 Methods and apparatus for forming a lateral wellbore
07/31/2003US20030141055 Drilling formation tester, apparatus and methods of testing and monitoring status of tester
07/30/2003EP1175546B1 Abrasive jet drilling assembly
07/30/2003EP1034354B1 Mill for use in a wellbore and method of milling
07/30/2003CN1433498A Remote lock-out system and method for horizontal direction drilling system
07/30/2003CN1432716A Feeding and supporting unit of movable drilling machine
07/29/2003US6598687 Three dimensional steerable system
07/29/2003US6598686 Method and system for enhanced access to a subterranean zone
07/24/2003WO2003060286A1 Downhole lens assembly for use with high power lasers for earth boring
07/24/2003WO2003060284A2 Dual-member pipe driven power generator
07/24/2003WO2003060282A2 Method and apparatus for replacement of underground pipe
07/24/2003US20030136588 Roller cone drill bit having designed walk characteristics
07/24/2003US20030136561 Straddle
07/24/2003DE10219757C1 Earth drilling device for sinking boreholes has rotary coupling using environmentally-friendly fluid for supplying setting pressure to hydrauluc setting device of drilling tool
07/24/2003DE10206646C1 Horizontal drilling rig displaced longitudinally relative to tracked transport vehicle between horizontal transport position and angled working position
07/24/2003CA2417307A1 Roller cone drill bit having designed walk characteristics
07/23/2003EP1328703A2 Downhole generator for horizontal directional drilling
07/23/2003EP1328458A1 Device for transporting particles of magnetic material
07/23/2003CN2562005Y Transmission of self-walking drilling and repairing machine for oil field
07/23/2003CN2561910Y Anchor rod drill on tunneller
07/22/2003US6595303 Rotary steerable drilling tool
07/17/2003US20030132034 Using a rotating inner member to drive a tool in a hollow outer member
07/17/2003US20030132032 Method and apparatus for drilling and lining a wellbore
07/17/2003US20030132029 Downhole lens assembly for use with high power lasers for earth boring
07/16/2003EP1327098A1 Device for expanding a pipeline
07/16/2003CN1114748C Drill for drilling a hole in stratigraphic
07/15/2003US6592985 Polycrystalline diamond partially depleted of catalyzing material
07/15/2003US6591921 Horizontal boring apparatus
07/15/2003US6591920 Moulten bath drilling method
07/15/2003US6591905 Orienting whipstock seat, and method for seating a whipstock
07/10/2003US20030127252 Motor Driven Hybrid Rotary Steerable System
07/10/2003US20030127251 Flexible hose with thrusters for horizontal well drilling
07/10/2003DE10204974C1 Feed pipe for cement has pipe segments with clamping rings made of steel preloaded to offset internal pressures
07/09/2003EP1326001A1 Feed beam for a portable machine tool
07/09/2003CN1429308A Directional drilling machine and method of directional drilling
07/09/2003CN1428495A Desert screw drilling machine vehicle
07/08/2003US6589640 Polycrystalline diamond partially depleted of catalyzing material
07/08/2003US6588983 Trenchless pipe replacement apparatus and technique
07/08/2003US6588517 Boring apparatus
07/08/2003US6588516 Method and apparatus for directional boring under mixed conditions
07/08/2003US6588515 Drill bit for directional drilling
07/08/2003US6588509 Well casing installation and removal apparatus and method
07/08/2003CA2254441C Apparatus for drilling lateral drainholes from a wellbore
07/03/2003WO2003054341A1 A boring head and a roller cutter and a saddle for a boring head for rotary drilling
07/03/2003WO2003054340A2 Installation of evacuated tubular conduits
07/03/2003WO2003054339A2 Casing while drilling
07/03/2003US20030121703 Electrically sequenced tractor
07/03/2003US20030121702 Hybrid Rotary Steerable System
07/03/2003US20030121701 Hydrothermal drilling method and system
07/03/2003US20030121558 Tube anchored to structure; pulling expansion structure through tube; well bore casing; controlling fluid flow
07/02/2003EP1169547B1 Method of creating a wellbore in an underground formation
07/02/2003CN2558750Y Three-purpose anchor block truck
07/01/2003US6585064 Polycrystalline diamond partially depleted of catalyzing material
07/01/2003US6585062 Steerable directional drilling reamer
07/01/2003US6585061 Calculating directional drilling tool face offsets
07/01/2003US6585040 Downhole drilling apparatus
06/2003
06/26/2003WO2003052237A1 Hybrid rotary steerable system
06/26/2003WO2003052236A1 Hybrid rotary steerable system
06/26/2003US20030120427 Graphical method for designing the trajectory of a well bore
06/26/2003US20030116355 Ultrasonic/sonic mechanism of deep drilling (USMOD)
06/26/2003US20030116324 Installation of evacuated tubular conduits
06/26/2003US20030116315 In situ thermal processing of a relatively permeable formation
06/25/2003CN2557681Y Circular suction type wall drilling exchanger
06/24/2003US6583992 High frequency power system and related methods
06/24/2003US6581700 Formation cutting method and system
06/24/2003US6581699 Steerable drilling system and method
06/24/2003US6581680 Apparatus for mounting an electronic device for use in directional drilling
06/19/2003WO2003050376A2 Burst qam downhole telemetry system
06/19/2003US20030111268 Underground boring machine employing navigation sensor and adjustable steering
06/19/2003US20030111265 Method of regulating the feed force of a drilling device
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