GB1246244A - Core drilling in non-supporting earth formations - Google Patents
Core drilling in non-supporting earth formationsInfo
- Publication number
- GB1246244A GB1246244A GB789670A GB789670A GB1246244A GB 1246244 A GB1246244 A GB 1246244A GB 789670 A GB789670 A GB 789670A GB 789670 A GB789670 A GB 789670A GB 1246244 A GB1246244 A GB 1246244A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hole
- drilling
- pipe
- mud
- feb
- 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.)
- Expired
Links
- 238000005553 drilling Methods 0.000 title abstract 3
- 230000015572 biosynthetic process Effects 0.000 title abstract 2
- 238000005755 formation reaction Methods 0.000 title 1
- 229910003460 diamond Inorganic materials 0.000 abstract 2
- 239000010432 diamond Substances 0.000 abstract 2
- VOYADQIFGGIKAT-UHFFFAOYSA-N 1,3-dibutyl-4-hydroxy-2,6-dioxopyrimidine-5-carboximidamide Chemical compound CCCCn1c(O)c(C(N)=N)c(=O)n(CCCC)c1=O VOYADQIFGGIKAT-UHFFFAOYSA-N 0.000 abstract 1
- 239000012267 brine Substances 0.000 abstract 1
- 239000003995 emulsifying agent Substances 0.000 abstract 1
- 230000001804 emulsifying effect Effects 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
- C09K8/36—Water-in-oil emulsions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/26—Oil-in-water emulsions
-
- 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
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
1,246,244. Boring. earth. HEATH & SHERWOOD DRILLING Ltd. 18 Feb., 1970 [21 Feb., 1969], No. 7896/70. Heading E1F. A method of core drilling suitable for drilling a hole in a non-supporting formation. with a drill comprising an annular diamond bit, a core barrel, and a drill pipe of substantially uniform external diameter, consists of maintaining a radial clearance between the surface of the hole and the external surface of the drill pipe of substantially 2 to 15% of the external diameter of the pipe, and circulating an oil base emulsive mud through the clearance between the pipe and hole. The mud may be an emulsion of brine and oil having substantially negative water loss characteristics and containing emulsifying and stabilizing agents and optionally a weighting material. Examples of muds are given. The top 10% of a hole, which may be drilled by a trione or diamond bit, may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA43654 | 1969-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1246244A true GB1246244A (en) | 1971-09-15 |
Family
ID=4084940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB789670A Expired GB1246244A (en) | 1969-02-21 | 1970-02-18 | Core drilling in non-supporting earth formations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1246244A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166943A (en) * | 2018-01-31 | 2018-06-15 | 长江岩土工程总公司（武汉） | Reach the drilling coring equipment of mud clothing package core using the probing of natural composite sludge |
| CN108894744A (en) * | 2018-08-29 | 2018-11-27 | 中煤特殊凿井有限责任公司 | A kind of device for abolishing boulder bit freezing |
-
1970
- 1970-02-18 GB GB789670A patent/GB1246244A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166943A (en) * | 2018-01-31 | 2018-06-15 | 长江岩土工程总公司（武汉） | Reach the drilling coring equipment of mud clothing package core using the probing of natural composite sludge |
| CN108166943B (en) * | 2018-01-31 | 2023-11-03 | 长江岩土工程有限公司 | Drilling and coring equipment for drilling with natural composite mud to reach mud coating and wrapping rock core |
| CN108894744A (en) * | 2018-08-29 | 2018-11-27 | 中煤特殊凿井有限责任公司 | A kind of device for abolishing boulder bit freezing |
| CN108894744B (en) * | 2018-08-29 | 2024-05-31 | 中煤特殊凿井有限责任公司 | Device for breaking boulder stuck drill |
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