| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 08/05/2004 | US20040149432 Method and system for accessing subterranean deposits from the surface |
| 08/05/2004 | US20040149431 Method and apparatus for a monodiameter wellbore, monodiameter casing and monobore |
| 08/05/2004 | CA2513435A1 Connection assembly for directional drilling |
| 08/04/2004 | EP1442320A1 Relative drill bit direction measurement |
| 08/04/2004 | EP1442196A2 Drilling vehicle with support bearing |
| 08/04/2004 | EP1159510B1 Wellbore primary barrier and related systems |
| 08/04/2004 | CN2630464Y Open indicator for hole-enlarging tool |
| 08/04/2004 | CN2630463Y Under-balance drilling diversion type liquid-gas separator |
| 08/04/2004 | CN1517495A Continuous redlizing method of underground engieering, tunnel and underground tunnel, reinforced engineering, sealing engineering and drainage work obtained by guide punching |
| 08/03/2004 | US6772134 Control means for a horizontal boring tool |
| 08/03/2004 | US6769499 Drilling direction control device |
| 08/03/2004 | CA2285193C Method and apparatus for deploying a well tool into a lateral wellbore |
| 07/29/2004 | WO2004063522A1 Wellstring assembly |
| 07/29/2004 | WO2004005660A8 Active hold down system for jack-up drilling unit |
| 07/29/2004 | US20040144570 Downhole torque-generating and generator combination apparatus |
| 07/29/2004 | US20040144568 Drilling system with expandable sleeve |
| 07/29/2004 | US20040144566 Boring apparatus |
| 07/29/2004 | US20040144047 Short radius whipstock system |
| 07/29/2004 | US20040144003 Continuous method of realisation of works underground, tunnels and excavations in general with works of consolidation, permeabilisation and drainage obtained through guided perforations |
| 07/28/2004 | CN1515783A Method for exploiting natural alkali mineral by utilizing horizontal butt well |
| 07/28/2004 | CN1515779A Stepless reducing gauge protection device |
| 07/28/2004 | CN1159513C Gravtational signal method for remotely controlling track in well and its device |
| 07/27/2004 | US6766869 Remote lock-out system and method for a horizontal directional drilling machine |
| 07/27/2004 | US6766859 Wellbore liner system |
| 07/27/2004 | CA2227601C Wellbore resonance tools |
| 07/24/2004 | CA2456303A1 Continuous method of realization of underground tunnels including peripheral perforations |
| 07/22/2004 | WO2004061267A1 Method and system for circulating fluid in a well system |
| 07/22/2004 | WO2004061261A1 Drilling with casing |
| 07/22/2004 | WO2004061258A2 Method of and apparatus for directional drilling |
| 07/22/2004 | WO2004012912A3 Handheld tool for breaking up rock |
| 07/22/2004 | WO2003095787A3 Method and system for building modular structures from which oil and gas wells are drilled |
| 07/22/2004 | US20040140726 Downhole torque generator |
| 07/22/2004 | US20040140129 Method and system for hydraulic friction controlled drilling and completing geopressured wells utilizing concentric drill strings |
| 07/22/2004 | US20040140128 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 07/22/2004 | US20040140102 Apparatus and method for orientating a downhole control tool |
| 07/21/2004 | EP1438483A1 System for lining a section of a wellbore |
| 07/21/2004 | EP1438478A1 Guide device in an offshore drilling installation |
| 07/21/2004 | EP1171946A4 High frequency switch-mode dc powered computer system |
| 07/20/2004 | US6763900 Directional well drilling |
| 07/20/2004 | US6763899 Deformable blades for downhole applications in a wellbore |
| 07/20/2004 | CA2304323C Deployable sensor apparatus and method |
| 07/15/2004 | WO2003087522A3 Nozzle for jet drilling and associated method |
| 07/15/2004 | US20040134686 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 07/15/2004 | US20040134668 Downhole cutting tool and method |
| 07/15/2004 | US20040134662 High power umbilicals for electric flowline immersion heating of produced hydrocarbons |
| 07/15/2004 | DE10258963A1 Hydraulic drilling of well borehole in ground containing coarse clays, cuts layer from borehole walls mechanically when pulling drillstring, with continued flow of drilling fluid |
| 07/14/2004 | EP1436487A1 Rock drilling apparatus and rock breaking machine |
| 07/14/2004 | EP1436486A1 Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate |
| 07/14/2004 | EP1436483A1 Multi-functional drilling vehicle |
| 07/14/2004 | EP1436482A2 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 07/14/2004 | EP0901559B1 Multicut window mill |
| 07/14/2004 | CN2625555Y Well bore reentry tool for branch well |
| 07/13/2004 | US6761574 Coiled tubing connector |
| 07/13/2004 | US6761507 Method and apparatus for replacement of underground pipe |
| 07/13/2004 | US6761232 Sprung member and actuator for downhole tools |
| 07/13/2004 | US6761231 Rotary driven drilling hammer |
| 07/13/2004 | US6761217 Downhole latch assembly and method of using the same |
| 07/08/2004 | WO2004057147A2 Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production. |
| 07/08/2004 | WO2004031528A3 Drilling rig having a compact compressor/pump assembly |
| 07/08/2004 | WO2003095786A3 Method of and system for building structures and drilling oil and gas wells in arctic, inaccessible or environmentally sensitive locations |
| 07/08/2004 | US20040129618 Rinsing liquid treatment device |
| 07/08/2004 | US20040129458 Retrievable pre-milled window with deflector |
| 07/08/2004 | US20040129456 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 07/08/2004 | US20040129414 Method of drilling an ultra-short radius borehole |
| 07/08/2004 | DE19607365C5 Verfahren zum Lenken eines Erdbohrgeräts und ein lenkbares Gerät zum Herstellen einer Erdbohrung A method for driving a power drill and a steerable device for producing a well bore |
| 07/08/2004 | DE10261553A1 Procedure for excavation-free exchange of pipes laid in ground entails determining tensile force acting on new pipe and when exceeding predetermined tensile force automatically transmitting audio signal |
| 07/07/2004 | EP1434925A1 Wellbore recovery operation |
| 07/07/2004 | EP1248894A4 Method and apparatus for a combined exit guide and sectional mill for sidetracking |
| 07/07/2004 | CN1511217A Method and apparatus for determining drilling paths to directional targets |
| 07/06/2004 | US6758289 Method and apparatus for hydrocarbon subterranean recovery |
| 07/06/2004 | US6758278 Forming a wellbore casing while simultaneously drilling a wellbore |
| 07/06/2004 | CA2338823C Drilling apparatus |
| 07/01/2004 | WO2003054340A3 Installation of evacuated tubular conduits |
| 07/01/2004 | WO2003054339A3 Casing while drilling |
| 07/01/2004 | WO2003042487A3 Mono diameter wellbore casing |
| 07/01/2004 | US20040124015 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 07/01/2004 | US20040124010 Drilling with concentric strings of casing |
| 07/01/2004 | US20040124008 Subsea wellbore drilling system for reducing bottom hole pressure |
| 07/01/2004 | US20040123984 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 06/30/2004 | CN2622374Y Controllable diameter changeable centering guide |
| 06/30/2004 | CN1509369A Method and system for enhanced access to subterranean zone |
| 06/30/2004 | CN1508380A Ultrashort curvature leve well drilling and completion method and apparatus thereof |
| 06/29/2004 | US6757613 Graphical method for designing the trajectory of a well bore |
| 06/29/2004 | US6755263 Underground drilling device and method employing down-hole radar |
| 06/29/2004 | US6755262 Downhole lens assembly for use with high power lasers for earth boring |
| 06/29/2004 | US6755248 One trip through tubing window milling apparatus and method |
| 06/24/2004 | WO2004053935A2 High power umbilicals for electric flowline immersion heating of produced hydrocarbons |
| 06/24/2004 | WO2004053285A1 Method and device for drilling a channel |
| 06/24/2004 | WO2004053284A2 Isolated electrical connection in a drill string |
| 06/24/2004 | WO2004003695A3 Tool apparatus, system and method of use |
| 06/24/2004 | US20040118614 Apparatus and method for drilling with casing |
| 06/24/2004 | US20040118613 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 06/24/2004 | US20040118612 Method of and apparatus for directional drilling |
| 06/24/2004 | US20040118608 Method of and apparatus for directional drilling |
| 06/24/2004 | US20040118560 Apparatus and method for drilling a wellbore with casing and cementing the casing in the wellbore |
| 06/24/2004 | DE10257392A1 Drilling method for creating a channel leading from surrounding soil to a shaft separated from the soil by a wall comprises drilling a channel, piercing the wall to produce a breakthrough, and enlarging the breakthrough |
| 06/23/2004 | EP1430200A1 Wellbore system for simultaneous drilling and production |
| 06/23/2004 | CN2621213Y Drill rod floating clamping mechanism |
| 06/23/2004 | CN1506557A Drilling process by using drill with slurry jacket |
| 06/22/2004 | US6753791 Burst QAM downhole telemetry system |