EP0248615A3 - Improvements in drilling apparatus - Google Patents
Improvements in drilling apparatus Download PDFInfo
- Publication number
- EP0248615A3 EP0248615A3 EP87304811A EP87304811A EP0248615A3 EP 0248615 A3 EP0248615 A3 EP 0248615A3 EP 87304811 A EP87304811 A EP 87304811A EP 87304811 A EP87304811 A EP 87304811A EP 0248615 A3 EP0248615 A3 EP 0248615A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- barrel
- core
- coated
- attached
- drilling apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005553 drilling Methods 0.000 title abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
- E21B25/12—Formed core retaining or severing means of the sliding wedge type
-
- E—FIXED CONSTRUCTIONS
- 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
- E21B10/00—Drill bits
-
- E—FIXED CONSTRUCTIONS
- 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
- E21B10/00—Drill bits
- E21B10/02—Core bits
-
- E—FIXED CONSTRUCTIONS
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Earth Drilling (AREA)
Abstract
Drilling apparatus is coated on selected surfaces
with PTFE.
In the drawing is shown an example of the
application of the invention to a core barrel assembly.
An outer core barrel l0 and an inner core barrel ll
are shown which are normally in sections.
At the lower end of the outer core barrel there is
attached a core catcher sub l3. At the lower end of the
inner barrel ll is attached an inner barrel breaker sub l4
and below that a core catcher l5. A core bit l6 is
attached to the lower end of the outer barrel.
Parts are shown coated with PTFE by thick lines,
e.g. the inner surface l8 of the inner barrel ll, the
outer surface l9 of the inner barrel and the inner surface
20 of the outer barrel l0.
The outer surface 2l of outer barrel l0 may also be
coated for example, and the surface 22 of the drill bit,
the inner surface 23 of the core catcher and the inner
surface 24 of the inner barrel breaker sub.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8613582 | 1986-06-04 | ||
| GB868613582A GB8613582D0 (en) | 1985-06-19 | 1986-06-04 | Zrb2-containing sintered cermet drilling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0248615A2 EP0248615A2 (en) | 1987-12-09 |
| EP0248615A3 true EP0248615A3 (en) | 1988-11-30 |
Family
ID=10598932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87304811A Withdrawn EP0248615A3 (en) | 1986-06-04 | 1987-06-01 | Improvements in drilling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0248615A3 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1004330A3 (en) * | 1990-05-31 | 1992-11-03 | Diamant Boart Stratabit Sa | Dual core drilling devie. |
| US5107942A (en) * | 1991-04-04 | 1992-04-28 | Baker Hughes Incorporated | Inner tube stabilizer for a corebarrel |
| US6450271B1 (en) * | 2000-07-21 | 2002-09-17 | Baker Hughes Incorporated | Surface modifications for rotary drill bits |
| EP1561002B1 (en) | 2002-11-07 | 2010-01-20 | Extreme Machining Australia PTY Ltd | An improved rotary roller reamer |
| EP1627128A4 (en) * | 2003-05-07 | 2006-05-24 | Extreme Machining Australia Pt | Stabilising band for a roller assembly |
| WO2008138957A2 (en) * | 2007-05-15 | 2008-11-20 | Shell Internationale Research Maatschappij B.V. | System for drilling a wellbore |
| CA2884529A1 (en) * | 2012-09-25 | 2014-04-03 | Ct Tech Pty Ltd | A core lifter assembly |
| CN102943642B (en) * | 2012-12-08 | 2015-04-01 | 吉林大学 | Lifting-free borehole bottom rope freezing coring drilling tool and method |
| CA3010879A1 (en) | 2016-03-03 | 2017-09-08 | Halliburton Energy Services, Inc. | Inner barrel crimping connection for a coring tool |
| US10941626B2 (en) * | 2016-03-03 | 2021-03-09 | Halliburton Energy Services, Inc. | Inner barrel shear zone for a coring tool |
| CN107829691A (en) * | 2017-09-25 | 2018-03-23 | 北京探矿工程研究所 | Core tube with internal coating |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD123550B (en) * | ||||
| US3990751A (en) * | 1975-08-13 | 1976-11-09 | Reed Tool Company | Drill bit |
| BE886911A (en) * | 1980-12-30 | 1981-04-16 | Diamant Boart Sa | METHOD FOR COLLECTING AND HANDLING SURVEY CARROTS, AND TUBE PROVIDED THEREFOR. |
| SU941542A1 (en) * | 1980-03-17 | 1982-07-07 | Всесоюзный Научно-Исследовательский И Проектный Институт По Нефтепромысловой Химии "Внипинефтепромхим" | Sealing member of packer |
| US4365678A (en) * | 1980-11-28 | 1982-12-28 | Mobil Oil Corporation | Tubular drill string member with contoured circumferential surface |
| FR2514097A1 (en) * | 1981-10-05 | 1983-04-08 | Goodrich Co B F | ROTATING JOINT FOR CONNECTING TWO CONDUITS BETWEEN THEM |
| EP0190092A2 (en) * | 1985-01-31 | 1986-08-06 | MANNESMANN Aktiengesellschaft | Pipe for oil fields |
-
1987
- 1987-06-01 EP EP87304811A patent/EP0248615A3/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD123550B (en) * | ||||
| US3990751A (en) * | 1975-08-13 | 1976-11-09 | Reed Tool Company | Drill bit |
| SU941542A1 (en) * | 1980-03-17 | 1982-07-07 | Всесоюзный Научно-Исследовательский И Проектный Институт По Нефтепромысловой Химии "Внипинефтепромхим" | Sealing member of packer |
| US4365678A (en) * | 1980-11-28 | 1982-12-28 | Mobil Oil Corporation | Tubular drill string member with contoured circumferential surface |
| BE886911A (en) * | 1980-12-30 | 1981-04-16 | Diamant Boart Sa | METHOD FOR COLLECTING AND HANDLING SURVEY CARROTS, AND TUBE PROVIDED THEREFOR. |
| FR2514097A1 (en) * | 1981-10-05 | 1983-04-08 | Goodrich Co B F | ROTATING JOINT FOR CONNECTING TWO CONDUITS BETWEEN THEM |
| EP0190092A2 (en) * | 1985-01-31 | 1986-08-06 | MANNESMANN Aktiengesellschaft | Pipe for oil fields |
Non-Patent Citations (2)
| Title |
|---|
| SOVIET INVENTIONS ILLUSTRATED, week 21, 6th July 1983, section H01 A97 Q49, no. 51139 K/21, Derwent Publications Ltd, London, GB; & SU-A-941 542 (VNIPINEFTEPROMKHIM) 17-07-1982 * |
| WORLD OIL, vol. 200, no. 5, April 1985, pages 83-86,88,90, Houston, Texas, US; A. PARK: "Coring; part 2 - core barrel types and uses" * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0248615A2 (en) | 1987-12-09 |
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Legal Events
| 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 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ORECO DIAMOND PRODUCTS LIMITED |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19890531 |