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)
06/2003
06/19/2003US20030111235 Indexing tool for coiled tubing
06/19/2003US20030111229 Wellhead assembly for communicating with the casing hanger annulus
06/19/2003CA2469168A1 Burst qam downhole telemetry system
06/18/2003EP1319115A2 Methods and apparatus for forming a lateral wellbore
06/18/2003CN2556352Y Full-automatic hydraulic drilling machine truck for oil and geological prospecting
06/17/2003US6578636 Horizontal directional drilling in wells
06/17/2003US6578630 Apparatus and methods for expanding tubulars in a wellbore
06/12/2003WO2003048524A1 Method for controlling a drilling sequence, a rock drilling apparatus and a computer programme to form a drilling sequence
06/12/2003WO2003048502A1 Drilling mast with movable and fixed unscrewing vice
06/12/2003US20030108393 System for creating a conduit in a borehole formed in an earth formation
06/12/2003US20030106720 Boring head, roller cutter and saddle for a boring head for rotary drilling
06/12/2003US20030106715 Earth drilling and boring system
06/12/2003US20030106714 Use of coiled tubing unit systems in sub sea operations
06/12/2003US20030106688 Casing while drilling
06/11/2003EP1248893A4 Integrated transmitter surveying while boring (swb) entrenching powering device for the continuation of a guided bore hole
06/11/2003EP0633965B1 Cut expansion joint sealing device for concrete dams and method for fitting same
06/11/2003CN2555372Y Boring tool of following drilling
06/11/2003CN2555371Y Trailing type small farm well driller
06/10/2003US6577954 Automated bore planning method and apparatus for horizontal directional drilling
06/10/2003US6575235 Subterranean drainage pattern
06/05/2003WO2003046329A2 A wellhead assembly for communicating with the casing hanger annulus
06/05/2003US20030103813 Riser tensioning construction
06/05/2003US20030102868 Boring tool tracking/guiding system and method with unconstrained target location geometry
06/05/2003US20030102130 In situ thermal recovery from a relatively permeable formation with quality control
06/05/2003US20030102129 Method and apparatus for forming an optimized window
06/05/2003US20030102126 In situ thermal recovery from a relatively permeable formation with controlled production rate
06/05/2003US20030102125 In situ thermal processing of a relatively permeable formation in a reducing environment
06/05/2003US20030102124 In situ thermal processing of a blending agent from a relatively permeable formation
06/04/2003EP1316673A2 Method and system for accessing subterranean deposits from the surface
06/04/2003EP1316670A2 Apparatus for static earth boring
06/04/2003CN2554331Y Soil stratigraphic rolling apparatus
06/04/2003CN2554330Y Throwout plane director
06/03/2003US6571888 Apparatus and method for directional drilling with coiled tubing
06/03/2003US6571870 Method and apparatus to vibrate a downhole component
06/03/2003US6571867 Apparatus for increasing the effective diameter of a wellbore
05/2003
05/30/2003WO2003044315A1 Through tubing whipstock
05/29/2003US20030100451 Providing heat heat sources to at least one portion of the formation; allowing the heat to transfer from the one or more heat sources to a selected section of the formation; controlling the heat; producing a mixture from the formation
05/29/2003US20030098605 In situ thermal recovery from a relatively permeable formation
05/29/2003US20030098181 Active controlled bottomhole pressure system & method
05/29/2003US20030098162 Method of inserting a tubular member into a wellbore
05/29/2003US20030098154 Apparatus for radially expanding tubular members
05/29/2003US20030098152 Method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores
05/29/2003US20030098150 Mast and trolley arrangement for mobile multi-function rig
05/29/2003US20030098149 In situ thermal recovery from a relatively permeable formation using gas to increase mobility
05/28/2003EP1314851A2 Apparatus for completing a subterranean well and method of using same
05/28/2003EP1071864B1 A system and method for locating a tool in a wellbore, a tubular and a device for the system
05/28/2003CN2553090Y Phi 159 oblique-proof device
05/28/2003CN1420958A Improved method for drilling of oil wells
05/28/2003CA2364147A1 Improved mast and trolley arrangement for mobile multi-function rig
05/27/2003US6568492 Drag-type casing mill/drill bit
05/27/2003US6568488 Roller pipe burster
05/27/2003US6568469 Method and apparatus for connecting a main well bore and a lateral branch
05/27/2003CA2233081C System for selective re-entry to completed laterals
05/22/2003WO2003042495A1 Plug setting apparatus and method
05/22/2003WO2003042494A1 Method and apparatus for borehole stabilisation
05/22/2003WO2003042491A1 Fluid drilling head
05/22/2003WO2003042489A2 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
05/22/2003WO2003042488A2 Deepwater slim hole well construction
05/22/2003WO2003042487A2 Mono diameter wellbore casing
05/22/2003WO2003042486A2 Collapsible expansion cone
05/22/2003WO2003008755A3 Wear resistant tubular connection
05/22/2003US20030094310 Three dimensional steerable system and method for steering bit to drill borehole
05/22/2003US20030094309 Method of forming a trenchless flowline
05/22/2003US20030094308 Boring device and boring method
05/22/2003US20030094279 Method of selecting tubular members
05/22/2003US20030094278 Expansion cone for radially expanding tubular members
05/22/2003US20030094277 Expansion cone for radially expanding tubular members
05/22/2003CA2467381A1 Mono diameter wellbore casing
05/21/2003EP1312751A2 Apparatus and method for milling through a whipstock in a wellbore
05/21/2003EP1312750A2 Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means
05/21/2003EP1311740A1 Method and device for assembling, particularly for lengthening, a pipe or system of rods
05/21/2003EP1040231B1 Soil consolidation apparatus, tool and method
05/20/2003US6565285 Method and device for laying an underground duct made of a plastic material
05/20/2003US6564871 High pressure permanent packer
05/20/2003US6564867 Method and apparatus for cementing branch wells from a parent well
05/15/2003WO2003040762A1 Relative drill bit direction measurement
05/15/2003WO2003040515A1 Guide device in an offshore drilling installation
05/15/2003US20030089528 Flightless rock auger for use with pressure drills with quick attachment and method of use
05/15/2003US20030089527 Apparatus and method for directional drilling of holes
05/15/2003US20030089525 Hole-boring method and system for making cast-in-situ piles
05/14/2003EP1310600A1 Drilling apparatus and method
05/14/2003CN1417448A Hole drilling equipment and method
05/13/2003US6562462 High volume density polycrystalline diamond with working surfaces depleted of catalyzing material
05/13/2003US6561289 Bottomhole assembly and methods of use
05/13/2003US6561288 Method and system for accessing subterranean deposits from the surface
05/13/2003CA2156977C Improved methods and systems for subterranean multilateral well drilling and completion
05/08/2003WO2003038231A2 Drilling vehicle with support bearing
05/08/2003WO2003038227A2 Filter train for underground collecting mains and method for introducing said filter train into predetermined layers of soil
05/08/2003US20030085059 Relative drill bit direction measurement
05/08/2003DE20303137U1 Small bore tunnelling process to repair a leaky dyke with a longitudinal internal concrete curtain seal.
05/07/2003EP1308599A2 Anti-rotation device for a steerable rotary drilling device
05/07/2003EP1308598A2 Pressure compensation system for a steerable rotary drilling device
05/07/2003EP0815352B1 An arrangement in a feed beam of a rock drill
05/07/2003CN2549154Y Unbalanced air drilling device
05/07/2003CN2549152Y Multifunctional horizontal driller
05/07/2003CN1416497A Method and appts. for directional boring under mixed conditions
05/06/2003US6557653 Working tool for a percussion power tool
05/06/2003US6557640 Lubrication and self-cleaning system for expansion mandrel
05/06/2003US6557628 Apparatus for establishing branch wells from a parent well
05/02/2003EP1306517A1 Method and system for drilling when forming concrete piles
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