| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 08/07/2007 | US7252159 Underwater rock boring apparatus having differential global positioning system receiver and boring method thereof |
| 08/07/2007 | CA2456797C Deformable blades for downhole applications in a wellbore |
| 08/07/2007 | CA2344627C Method of dynamically controlling bottom hole circulating pressure in a wellbore |
| 08/07/2007 | CA2279338C Drilling assembly with a steering device for coiled-tubing operations |
| 08/02/2007 | US20070176603 Boring Tool Tracking/Guiding System and Method with Unconstrained Target Location Geometry |
| 08/02/2007 | US20070175668 Process and system for drilling and lining a bore hole |
| 08/02/2007 | US20070175665 Method for drilling with a wellbore liner |
| 08/02/2007 | US20070175664 Rock drill bit assembly |
| 08/02/2007 | US20070175629 Downhole/openhole anchor |
| 08/01/2007 | CN2929141Y Integrated hauling petroleum drilling machine |
| 08/01/2007 | CN2928960Y Driving sleeve structure of rotary digging drilling machine |
| 07/31/2007 | CA2482122C Expandable eccentric reamer and method of use in drilling |
| 07/27/2007 | CA2574728A1 Steering assembly and steering component |
| 07/26/2007 | WO2007084623A2 Hole coring system |
| 07/26/2007 | WO2007014111A9 Downhole tool position sensing system |
| 07/26/2007 | US20070173418 Treatment fluids comprising starch and ceramic particulate bridging agents and methods of using these fluids to provide fluid loss control |
| 07/26/2007 | US20070169943 Method and device for establishing an underground well |
| 07/26/2007 | US20070169940 Tubing hanger and wellhead housing with mating tubing annulus passages |
| 07/26/2007 | US20070169930 Method and apparatus for drilling with casing |
| 07/26/2007 | DE102006003769A1 Clearing and removing drilling material from a horizontal bore involves using flow of flushing material that loosens and transports drilling material produced by supplying gaseous medium released at one or more points in bore |
| 07/25/2007 | EP1809853A2 Underground piercing tool |
| 07/25/2007 | EP1687508B1 Method of reducing sand production from a wellbore |
| 07/25/2007 | CN2926485Y Positioner for self-locking oblique apparatus |
| 07/25/2007 | CN2926478Y Rotary-dug driller |
| 07/25/2007 | CN2926477Y Multi-axis hole driller |
| 07/25/2007 | CN1328474C Expander for expanding tubular element |
| 07/25/2007 | CN1328472C Boring head and a roller cutter and a saddle for a boring head for rotary drilling |
| 07/25/2007 | CN1328471C Application of drilling system and method of drilling |
| 07/24/2007 | US7246667 Radial expansion of tubular members |
| 07/24/2007 | CA2483023C Method and system for accessing subterranean deposits from the surface |
| 07/19/2007 | US20070163810 Flexible directional drilling apparatus and method |
| 07/19/2007 | US20070163805 System for drilling the ground to obtain circulation of fluid in a plant for the exploitation of geothermal energy |
| 07/19/2007 | US20070163782 Dual-bop and common riser system |
| 07/18/2007 | EP1537291B1 Drilling method |
| 07/18/2007 | EP1454029B1 Fluid drilling head |
| 07/18/2007 | CN2923984Y Novel double-self-locking balancing casing-pipe floor |
| 07/18/2007 | CN2923973Y High-pressure air-cashion well-drilling apparatus |
| 07/18/2007 | CN2923972Y Fully-hydraulic multi-direction altitude anchoring driller |
| 07/18/2007 | CN2923969Y Ladder-shape screw-pitch propelling extrusion, perforation, broaching pile engine |
| 07/18/2007 | CN1327103C Fluid drilling head |
| 07/18/2007 | CN100999981A Oblique device for casing tube window opening |
| 07/18/2007 | CN100999980A Drilling method of realizing whole procedure under-balance |
| 07/17/2007 | US7243753 Carrier vehicle for drilling or rockbolting machine |
| 07/17/2007 | US7243739 Coiled tubing directional drilling apparatus |
| 07/17/2007 | US7243738 Multi seam coal bed/methane dewatering and depressurizing production system |
| 07/17/2007 | US7243719 Control method for downhole steering tool |
| 07/17/2007 | CA2413825C Telescoping rig with torque carrier |
| 07/17/2007 | CA2257611C System for sealing the intersection between a primary and a branch borehole |
| 07/12/2007 | US20070158111 Method and apparatus for directional drilling |
| 07/12/2007 | US20070158109 Perforating Gun |
| 07/12/2007 | US20070158069 Method for drilling and casing a wellbore with a pump down cement float |
| 07/11/2007 | CN1997915A Downhole signal source |
| 07/11/2007 | CN1997807A Systems and methods for remotely determining and changing cutting modes during decoking |
| 07/11/2007 | CN1995691A Low-pressure drilling technology using double-wall drill pipe |
| 07/11/2007 | CN1995686A Pulse-percussion drilling tool |
| 07/11/2007 | CN1995553A Pile forming method for filling pile of compact-making hole and its drill rod |
| 07/11/2007 | CN1325754C Double action air leakage prevention agent for oil-gas well cementing, method for preparation and use thereof |
| 07/11/2007 | CN1325746C An erectable arm assembly for use in boreholes |
| 07/10/2007 | US7240729 Apparatus for expanding a tubular member |
| 07/10/2007 | US7240728 Expandable tubulars with a radial passage and wall portions with different wall thicknesses |
| 07/10/2007 | CA2341295C Device for drilling or draining holes in soil or rock |
| 07/05/2007 | WO2007076488A2 Dual-bop and common riser system |
| 07/05/2007 | WO2007073575A1 Magnetic beacon guidance system |
| 07/05/2007 | US20070151767 Steering of bent housing mud motor downhole rotation device |
| 07/05/2007 | US20070151766 Mechanical and fluid jet horizontal drilling method and apparatus |
| 07/05/2007 | US20070151765 Method and apparatus for horizontal drilling and oil recovery |
| 07/05/2007 | US20070151761 Automated drill string position survey |
| 07/05/2007 | DE202007004437U1 Stülpschlauchtiefbohrvorrichtung Stülpschlauchtiefbohrvorrichtung |
| 07/05/2007 | DE19734068B4 Bohrspitze Drill |
| 07/04/2007 | EP1803893A1 Method of installing horizontal drains for collecting seawater |
| 07/04/2007 | EP1803892A2 Fast laying method for pipes/infrastructures/cables for underground services |
| 07/04/2007 | EP1802844A1 Method for laying pipes without digging trenches |
| 07/04/2007 | CN2918718Y Branch well location coupler |
| 07/04/2007 | CN2918705Y Tunnelling machine carried anchor bar driller device |
| 07/04/2007 | CN1324200C Seepage control consolidation method and apparatus for reciprocating high-pressure injection grouting foundation |
| 07/03/2007 | US7237625 Device for simulataneously casing a hole while drilling |
| 07/03/2007 | US7237624 Electronic roll indexing compensation in a drilling system and method |
| 07/03/2007 | US7237623 Method for pressurized mud cap and reverse circulation drilling from a floating drilling rig using a sealed marine riser |
| 07/03/2007 | CA2322484C Method for removal of cuttings from a deviated wellbore drilled with coiled tubing |
| 07/03/2007 | CA2306739C Scoop for use with an anchor system for supporting a whipstock |
| 07/03/2007 | CA2218674C A hydraulic arrangement for turning the actuator of a rock drilling machine |
| 06/28/2007 | WO2007073327A1 Control system and method for controlling a drilling rig |
| 06/28/2007 | WO2007073317A1 Particle separator for separating drill cuttings from an air flow and a drill rig as well as a method for controlling a particle separator |
| 06/28/2007 | WO2007054154A3 Tool for drilling in earthy and/or rocky ground |
| 06/28/2007 | US20070144784 Method for drilling and lining a wellbore |
| 06/28/2007 | US20070144783 Rotating Systems Associated with Drill Pipe |
| 06/28/2007 | US20070144745 Drilling rig apparatus and downhole tool assembly system and method |
| 06/27/2007 | EP1799953A1 Rock drilling rig, service platform connected to a rock drilling rig and a roof for a service platform |
| 06/27/2007 | EP1799918A1 Method and apparatus for excavation of a trench |
| 06/27/2007 | CN2916096Y Hydraulic drill-pressure presser |
| 06/27/2007 | CN2916093Y Detachable casing sidetracking guide device |
| 06/27/2007 | CN2916092Y Four-link amplitude modulation mechanism for non-excavating horizontal directional drilling machine |
| 06/27/2007 | CN1987039A Hybrid power well repairing machine |
| 06/27/2007 | CN1323221C Steel pipe for use as embedded expandedpipe, and method of embedding oil-well steel pipe |
| 06/26/2007 | US7234546 Drilling and cementing casing system |
| 06/26/2007 | US7234545 Self-blocking safety device |
| 06/26/2007 | US7234544 Drill tool shaft-to-housing locking device |
| 06/26/2007 | US7234543 Systems and methods for directionally drilling a borehole using a continuously variable transmission |
| 06/26/2007 | US7234542 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 06/26/2007 | US7234540 Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis |