| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3701914 | 1987-01-23 | ||
| DE3701914ADE3701914C1 (en) | 1987-01-23 | 1987-01-23 | Directly driven core drilling tool |
| Publication Number | Publication Date |
|---|---|
| EP0276724A2 EP0276724A2 (en) | 1988-08-03 |
| EP0276724A3true EP0276724A3 (en) | 1990-08-22 |
| EP0276724B1 EP0276724B1 (en) | 1994-09-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88100667AExpired - LifetimeEP0276724B1 (en) | 1987-01-23 | 1988-01-19 | Core drilling tool with a direct drive |
| Country | Link |
|---|---|
| US (1) | US4875531A (en) |
| EP (1) | EP0276724B1 (en) |
| CA (1) | CA1296319C (en) |
| DE (1) | DE3701914C1 (en) |
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| DE3825225A1 (en)* | 1988-07-25 | 1990-02-01 | Eastman Christensen Co | DRILLING TOOL |
| DE3902870A1 (en)* | 1988-07-25 | 1990-02-01 | Eastman Christensen Co | Method of sinking bores in subterranean rock formations |
| DE3902869C1 (en)* | 1989-02-01 | 1990-04-12 | Eastman Christensen Co., Salt Lake City, Utah, Us | |
| DE3912067C1 (en)* | 1989-04-13 | 1990-09-06 | Eastman Christensen Co., Salt Lake City, Utah, Us | |
| US5007490A (en)* | 1990-06-20 | 1991-04-16 | Ide Russell D | Progressive cavity drive train with elastomeric joint assembly for use in downhole drilling |
| US5135059A (en)* | 1990-11-19 | 1992-08-04 | Teleco Oilfield Services, Inc. | Borehole drilling motor with flexible shaft coupling |
| FR2675197B1 (en)* | 1991-04-12 | 1993-07-16 | Leroy Andre | OIL, GAS OR GEOTHERMAL DRILLING APPARATUS. |
| US5186265A (en)* | 1991-08-22 | 1993-02-16 | Atlantic Richfield Company | Retrievable bit and eccentric reamer assembly |
| US5168942A (en)* | 1991-10-21 | 1992-12-08 | Atlantic Richfield Company | Resistivity measurement system for drilling with casing |
| US6095259A (en)* | 1998-04-03 | 2000-08-01 | Keyes; Robert C. | Core sampler apparatus with specific attachment means |
| BE1012557A3 (en)* | 1999-03-15 | 2000-12-05 | Security Dbs | Core. |
| US7753144B2 (en) | 2005-11-21 | 2010-07-13 | Schlumberger Technology Corporation | Drill bit with a retained jack element |
| US8360174B2 (en) | 2006-03-23 | 2013-01-29 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
| US7497279B2 (en)* | 2005-11-21 | 2009-03-03 | Hall David R | Jack element adapted to rotate independent of a drill bit |
| US8297378B2 (en) | 2005-11-21 | 2012-10-30 | Schlumberger Technology Corporation | Turbine driven hammer that oscillates at a constant frequency |
| US7571780B2 (en) | 2006-03-24 | 2009-08-11 | Hall David R | Jack element for a drill bit |
| US8522897B2 (en) | 2005-11-21 | 2013-09-03 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
| US8225883B2 (en) | 2005-11-21 | 2012-07-24 | Schlumberger Technology Corporation | Downhole percussive tool with alternating pressure differentials |
| US7954401B2 (en) | 2006-10-27 | 2011-06-07 | Schlumberger Technology Corporation | Method of assembling a drill bit with a jack element |
| MY155017A (en)* | 2006-12-15 | 2015-08-28 | Schlumberger Technology Corp | System for steering a drill string |
| US7721826B2 (en) | 2007-09-06 | 2010-05-25 | Schlumberger Technology Corporation | Downhole jack assembly sensor |
| US8701799B2 (en) | 2009-04-29 | 2014-04-22 | Schlumberger Technology Corporation | Drill bit cutter pocket restitution |
| SI22761A (en)* | 2009-07-22 | 2009-10-31 | Kmetijski inštitut Slovenije | Device for non-destructive sampling of soil |
| US8739899B2 (en)* | 2010-07-19 | 2014-06-03 | Baker Hughes Incorporated | Small core generation and analysis at-bit as LWD tool |
| CN102619484B (en)* | 2012-04-11 | 2014-09-10 | 中国石油集团川庆钻探工程有限公司钻采工程技术研究院 | Well wall coring while drilling tool |
| CN103015931B (en)* | 2012-12-27 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司 | Coring system for coring while drilling |
| CN103015932B (en)* | 2012-12-27 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司 | Drilling system for coring while drilling |
| CN104453765B (en)* | 2013-09-24 | 2017-03-15 | 金川集团股份有限公司 | Overshot for wireline core drilling tools |
| CN110984878B (en)* | 2019-11-08 | 2021-09-10 | 长江岩土工程有限公司 | Rope coring drilling device for urban deep-buried tunnel exploration hole |
| CN113175307B (en)* | 2021-04-29 | 2022-04-15 | 四川大学 | Rotary seal core lifting mechanism |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2326435A (en)* | 1940-05-24 | 1943-08-10 | Pink T Bynum | Coring apparatus |
| GB2183272A (en)* | 1985-11-22 | 1987-06-03 | Amoco Corp | Controlling the force applied to a drill bit while drilling |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2898086A (en)* | 1954-12-02 | 1959-08-04 | Jersey Prod Res Co | Method of drilling |
| US2915285A (en)* | 1956-05-23 | 1959-12-01 | Jersey Prod Res Co | Coring subterranean formations |
| US4518051A (en)* | 1983-06-30 | 1985-05-21 | Chevron Research Company | Percussion actuated core sampler |
| US4518050A (en)* | 1983-06-30 | 1985-05-21 | Chevron Research Company | Rotating double barrel core sampler |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2326435A (en)* | 1940-05-24 | 1943-08-10 | Pink T Bynum | Coring apparatus |
| GB2183272A (en)* | 1985-11-22 | 1987-06-03 | Amoco Corp | Controlling the force applied to a drill bit while drilling |
| Publication number | Publication date |
|---|---|
| DE3701914C1 (en) | 1988-05-19 |
| US4875531A (en) | 1989-10-24 |
| EP0276724B1 (en) | 1994-09-21 |
| EP0276724A2 (en) | 1988-08-03 |
| CA1296319C (en) | 1992-02-25 |
| Publication | Publication Date | Title |
|---|---|---|
| EP0276724A3 (en) | Core drilling tool with a direct drive | |
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| AU105903S (en) | A drilling bushing | |
| AU103236S (en) | A glazing tool |
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase | Free format text:ORIGINAL CODE: 0009012 | |
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| 17P | Request for examination filed | Effective date:19901208 | |
| 17Q | First examination report despatched | Effective date:19920710 | |
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) | Owner name:EASTMAN TELECO COMPANY | |
| GRAA | (expected) grant | Free format text:ORIGINAL CODE: 0009210 | |
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