| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9521944.0AGB9521944D0 (en) | 1995-10-26 | 1995-10-26 | A drilling assembly for use in drilling holes in subsurface formations |
| EP96307429AEP0770759A3 (en) | 1995-10-26 | 1996-10-11 | A drilling assembly for use in drilling holes in subsurface formations |
| GB9621205AGB2306528A (en) | 1995-10-26 | 1996-10-11 | Rotary drilling assembly |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9521944.0AGB9521944D0 (en) | 1995-10-26 | 1995-10-26 | A drilling assembly for use in drilling holes in subsurface formations |
| Publication Number | Publication Date |
|---|---|
| GB9521944D0true GB9521944D0 (en) | 1996-01-03 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9521944.0APendingGB9521944D0 (en) | 1995-10-26 | 1995-10-26 | A drilling assembly for use in drilling holes in subsurface formations |
| GB9621205AWithdrawnGB2306528A (en) | 1995-10-26 | 1996-10-11 | Rotary drilling assembly |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9621205AWithdrawnGB2306528A (en) | 1995-10-26 | 1996-10-11 | Rotary drilling assembly |
| Country | Link |
|---|---|
| EP (1) | EP0770759A3 (en) |
| GB (2) | GB9521944D0 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9521972D0 (en)* | 1995-10-26 | 1996-01-03 | Camco Drilling Group Ltd | A drilling assembly for drilling holes in subsurface formations |
| US6280874B1 (en) | 1998-12-11 | 2001-08-28 | Schlumberger Technology Corp. | Annular pack |
| WO2001011179A1 (en)* | 1999-08-04 | 2001-02-15 | Chunfang Wang | A drilling device |
| EP1291486A1 (en)* | 2001-09-07 | 2003-03-12 | Shell Internationale Researchmaatschappij B.V. | Rotary coiled tubing |
| US7712549B2 (en) | 2004-11-15 | 2010-05-11 | Dennis Tool Company | Drilling tool |
| US7481282B2 (en) | 2005-05-13 | 2009-01-27 | Weatherford/Lamb, Inc. | Flow operated orienter |
| US20090091278A1 (en)* | 2007-09-12 | 2009-04-09 | Michael Montois | Downhole Load Sharing Motor Assembly |
| RU2496067C2 (en) | 2007-10-19 | 2013-10-20 | Шелл Интернэшнл Рисерч Маатсхаппий Б.В. | Cryogenic treatment of gas |
| GB2483825B (en) | 2008-01-17 | 2012-06-06 | Weatherford Lamb | Flow operated orienter |
| US20090260823A1 (en) | 2008-04-18 | 2009-10-22 | Robert George Prince-Wright | Mines and tunnels for use in treating subsurface hydrocarbon containing formations |
| FR2935015B1 (en)* | 2008-08-18 | 2010-11-05 | Gerard Arsonnet | DEVICE FOR PRODUCING A WELL IN A SOIL |
| EP2361343A1 (en) | 2008-10-13 | 2011-08-31 | Shell Oil Company | Using self-regulating nuclear reactors in treating a subsurface formation |
| US8201642B2 (en) | 2009-01-21 | 2012-06-19 | Baker Hughes Incorporated | Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies |
| GB0918358D0 (en) | 2009-10-20 | 2009-12-02 | Futuretec Ltd | Wellbore completion |
| WO2012161596A1 (en)* | 2011-05-24 | 2012-11-29 | Flexidrill Limited | Control mechanism |
| US9506335B1 (en) | 2014-05-27 | 2016-11-29 | Gary Smith | Multi-directionally rotating downhole drilling assembly and method |
| CN106014198B (en)* | 2016-05-11 | 2018-09-14 | 上海安恒环保科技有限公司 | A kind of efficient connecting pipes drilling rig |
| CN110939392A (en)* | 2019-12-31 | 2020-03-31 | 中国石油集团川庆钻探工程有限公司 | Double-speed double-core drilling speed-increasing equipment |
| CN120119893B (en)* | 2025-03-29 | 2025-08-22 | 西南石油大学 | Directional drilling drill string anti-torque intelligent balancing tool |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE881484C (en)* | 1944-03-28 | 1953-06-29 | Salzgitter Maschinen Ag | Drilling turbine |
| US4227584A (en)* | 1978-12-19 | 1980-10-14 | Driver W B | Downhole flexible drive system |
| US4646855A (en)* | 1984-11-06 | 1987-03-03 | Mobil Oil Corporation | Method for raising and lowering a drill string in a wellbore during drilling operations |
| SU1514895A1 (en)* | 1987-06-18 | 1989-10-15 | Всесоюзный Научно-Исследовательский Институт Буровой Техники | Apparatus for sinking vertical wells |
| US4862974A (en)* | 1988-12-07 | 1989-09-05 | Amoco Corporation | Downhole drilling assembly, apparatus and method utilizing drilling motor and stabilizer |
| GB8912396D0 (en)* | 1989-05-30 | 1989-07-12 | Ryall Michael L | Drill bit for use in a system for drilling oil and gas wells |
| US5417292A (en)* | 1993-11-22 | 1995-05-23 | Polakoff; Paul | Large diameter rock drill |
| Publication number | Publication date |
|---|---|
| EP0770759A2 (en) | 1997-05-02 |
| GB2306528A (en) | 1997-05-07 |
| EP0770759A3 (en) | 1997-07-02 |
| GB9621205D0 (en) | 1996-11-27 |
| Publication | Publication Date | Title |
|---|---|---|
| GB2306529B (en) | A drilling assembly for drilling holes in subsurface formations | |
| GB2322651B (en) | A downhole unit for use in boreholes in a subsurface formation | |
| ZA9610393B (en) | Drilling rig | |
| GB9521944D0 (en) | A drilling assembly for use in drilling holes in subsurface formations | |
| GB2328699B (en) | Drilling rig | |
| GB2299111B (en) | Improvements in or relating to downhole components used in subsurface drilling | |
| GB9502968D0 (en) | Coalbed drilling | |
| GB2301853B (en) | Drilling wells | |
| GB2347446B (en) | Downhole tubing | |
| GB2319794B (en) | Apparatus for Utilization in a Subterranean Wellbore | |
| GB2322705B (en) | Wellbore logging | |
| SG34261A1 (en) | Improved methods and systems for subterranean multilateral well drilling and completion | |
| GB9611667D0 (en) | Drilling a wellbore | |
| GB9601563D0 (en) | Earth boring unit | |
| GB2314929B (en) | Wellbore logging | |
| GB9704184D0 (en) | Packer for a wellbore | |
| GB9818117D0 (en) | Surveying a subterranean borehole using accelerometers | |
| GB2305250B (en) | Borehole surveying | |
| GB2316481B (en) | Wellbore logging | |
| EP0704598A3 (en) | Tool for use in a wellbore testing string | |
| PL326856A1 (en) | Drilling rig | |
| GB2321963B (en) | Wellbore logging | |
| GB2311427B (en) | A drill string sub assembly | |
| GB2345143B (en) | Imaging a completion string in a wellbore | |
| GB9723105D0 (en) | Improvements in subsurface drilling systems |