CN100532781C - Gas drilling centering technique - Google Patents
Gas drilling centering technique Download PDFInfo
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- CN100532781C CN100532781C CNB2007100496308A CN200710049630A CN100532781C CN 100532781 C CN100532781 C CN 100532781C CN B2007100496308 A CNB2007100496308 A CN B2007100496308A CN 200710049630 A CN200710049630 A CN 200710049630A CN 100532781 C CN100532781 C CN 100532781C
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- 238000005553 drilling Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 claims description 19
- 239000011435 rock Substances 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 239000002826 coolant Substances 0.000 abstract 2
- 239000012530 fluid Substances 0.000 description 6
- 230000002950 deficient Effects 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- 244000227633 Ocotea pretiosa Species 0.000 description 2
- 235000004263 Ocotea pretiosa Nutrition 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
Abstract
An air drilling and lifting process includes preparation and execution two procedures. By applying proper drilling index, it solves the problem of present drilling under coolant for both drill and lifting device. By using air as the media for lifting, it prevents pollution to coolant.
Description
Technical field:
A kind of gas drilling centering technique, the drilling through of rock core when being used for petroleum gas, coal seam drilling operation and adopting gas as the drilling well medium belongs to and adopts gas to implement the technology field that rock core drills through as the drilling well medium.
Background technology:
In the prior art, general all is to have the rock core that carries out under the drilling fluid condition to drill through, comprise assembling coring tool, brill, pith, core-drilling down, cut heart trip-out, go out the heart, present conventional CORING TECHNOLOGY can only satisfy the needs of coring that adopt under the drilling fluid condition; At present, in order to improve bit speed, adopting gas to implement drilling well as the drilling well medium is the development trend that improves bit speed, therefore under the situation of gas drilling, the still conventional CORING TECHNOLOGY that adopts now, at present the shortcoming of technology is: because conventional CORING TECHNOLOGY is to implement having under the drilling well condition also, in the process of coring, drill bit and coring tool all have drilling fluid to implement cooling, therefore can normally carry out coring operation, but adopting gas drilling centering is to implement under the state of drilling fluid to core not having, and does not have the cooling of drilling fluid, the drill bit of coring tool, parts such as rotation assembly can't cool off at gas condition, be easy to burn, in case the situation that instrument burns just can't guarantee drilling through smoothly of rock core, and cause the downhole safety accident easily.
Summary of the invention:
The present invention be directed to the defective of prior art, adopt suitable pith parameter, creep into the parameter of coring, design a kind of gas drilling centering technique that enforcement is cored under the gas drilling condition.
The present invention is achieved in that centering technique of the present invention comprises the preparatory technology of coring, with two stages of construction technology, the preparatory technology stage is conscientiously checked coring, determine that the shaft bottom do not have the metal junk, well is unimpeded, make the sassafras ring that rubs of coring tool safety joint, screw thread is intact, O RunddichtringO not damaged, special rotation assembly rotates flexibly, and inner/outer tube does not have and bumps flat and influence the defectives such as crackle of intensity, and screw thread should be intact, the core grabber assembly does not have breakage, elasticity is suitable, and the tungsten carbide particle that applies weldering is even, and the core bit gap adjustment is 8-12mm, press the method lower going-into-well intraocular of drill collar then, and with safety slip card jail; Concrete construction technique is as follows: coring tool assembling and inspection are finished, coring tool is connected on the drilling tool, 0.5m place, top cycle rotation drilling tool at the bottom of the lower going-into-well, the sensitive table of check and correction, drive air compressor simultaneously and purge the shaft bottom, begin core-drilling after making the shaft bottom clean, pith parameter and drilling parameter are set, start rig then, core-drilling under pith parameter of setting and drilling parameter; Will slowly increase the pressure of the drill in core-drilling, in the core-drilling, not stop compressor, drill bit is not lifted from the shaft bottom, and as the card heart, the mill heart should cut the heart immediately and pull out of hole; When implementing to cut the heart, carry drilling tool on slowly, observe and refer to that representation shows; When making up a joint, the sand setting bit freezing is avoided in circulation earlier about 8～15 minutes, carry drilling tool then, supercharger stops air feed, opens the manual flap type of kill manifold and lays down the interior pressure of drilling tool, just shackle makes up a joint then, connect single after, keep down-hole equipment not rotate after driving the empty machine of pressure, slowly transfer drilling tool on earth, add the pressure of the drill than coring weight big 10%～50%, utilize the surplus heart to push up loose core grabber, on carry drilling tool, recover suspending weight after, start rotating disk, increase to recommendation the pressure of the drill gradually; Instrument should check after going out well, guarantee safety joint, inside and outside tube, stabilizer screw thread do not have damage, urceolus do not have bending, its inner/outer tube straightness accuracy must not be greater than 4.5mm.
The invention has the beneficial effects as follows: owing to be the coring operation of under gas medium, carrying out, can not be subjected to the pollution of drilling fluid, thereby can obtain the littler rock core of pollution, can understand the formation lithology of getting more accurate, all sidedly, increase the confidence level of core analysis and exploration well oil in place prediction, effectively shorten the exploration time, improve exploration efficiency and accuracy, and get accurate geologic information full positive role is arranged getting.
Specific implementation method: provide embodiments of the invention below in conjunction with accompanying drawing: centering technique of the present invention comprises core preparatory technology and two stages of construction technology, before the construction of coring, determines that the shaft bottom do not have the metal junk, and well is unimpeded; The sassafras ring of rubbing of coring tool safety joint, screw thread are intact, and O RunddichtringO not damaged, special rotation assembly rotate flexibly, inner/outer tube does not have and bumps flat and influence the defectives such as crackle of intensity, screw thread should be intact, and special core grabber assembly does not have breakage, and elasticity is suitable, the tungsten carbide particle that applies weldering is even, the drill bit gap adjustment is 8-12mm, when adopting cat head to link closely, slowly strains with second gear three road cat lines, press the method lower going-into-well intraocular of drill collar then, and with safety slip card jail; Concrete process is as follows: the preparatory technology of coring is: on ground coring tool assembling and inspection are finished earlier, then coring tool is connected on the drilling tool and lower going-into-well at the bottom of 0.5m place, top, the cycle rotation drilling tool, the sensitive table of check and correction, drive air compressor simultaneously and purge the shaft bottom, begin core-drilling after making the shaft bottom clean; Construction technology is: the first step: the pith parameter is set: the pressure of the drill 10-30KN, tolerance 20-50m
3/ min, rotating speed 30-50rpm; The core-drilling parameter is set: the pressure of the drill 10-30KN, tolerance 20-50m
3/ min, rotating speed 30-50rpm; Second step: start rig, slowly transfer drilling tool, allow drill bit contact the shaft bottom, slowly increase the pressure of the drill, core-drilling under pith parameter of setting and drilling parameter; The 3rd step: in the core-drilling, do not stop compressor, drill bit is not lifted from the shaft bottom, and in the core-drilling, as the card heart, the mill heart cuts the heart immediately and pulls out of hole, and meets leakage, overflow, blowout, stops coring operation immediately; The 4th step: when making up a joint, circulation earlier about 8-15 minutes is carried drilling tool on then, and supercharger stops air feed, and the manual flap type of opening kill manifold is laid down the pressure in the drilling tool, and just shackle makes up a joint then; The 5th step: connect single after, open and keep behind the air compressor machine down-hole equipment not rotate, slowly transfer drilling tool on earth, on drilling tool, increase the pressure of the drill, utilize the surplus heart to push up loose core grabber than coring weight big 10%～50%, on carry drilling tool, after recovering suspending weight, start rotating disk, increase to recommendation the pressure of the drill gradually; The well section of dwindling as if chance keyway, dog-leg, hole diameter in boring down should slowly be transferred drilling tool, when seriously being hampered, and following rock bit reaming; After coring tool went out well, the inner/outer tube straightness accuracy of core barrel must not be greater than 4.5mm; In boring down,, drive air compressor to purge, remove sand setting if meet sand setting; In construction technology, the pith operation will be adopted lower bound rotating speed, low discharge capacity, light the pressure of the drill test running earlier; Concrete operations are as follows: on ground coring tool assembling and inspection are finished, then coring tool is connected and is lowered to 0.5m place, top, shaft bottom on the drilling tool, cycle rotation drilling tool, the sensitive table of check and correction, drive air compressor and purge the shaft bottom, begin core-drilling after the shaft bottom is clean; Carry out in strict accordance with pith parameter and the core-drilling parameter set during core-drilling; Coring tool is wanted to allow drill bit slowly contact the shaft bottom at the bottom of the slow lower going-into-well, slowly increases the pressure of the drill then; In core-drilling, can not stop compressor, drill bit is not lifted from the shaft bottom yet; In core-drilling, as the card heart, the mill heart, should cut the heart immediately and pull out of hole, when implementing to cut heart technology, carry drilling tool on slowly, note to observe and to refer to that representation shows that general suspending weight increases by 50～150,000 Ns to be eliminated again immediately, proves that rock core is pulled off, do not fall if the suspending weight increase is held for 150～300,000 Ns, illustrate that rock core is not disconnected, should slowly transfer drilling tool, increase the air compressor machine rotating speed, rotate rotating disk in right amount, repeat above-mentioned action repeatedly, keep the rock core tension state, pulled off until rock core; When making up a joint, to circulate earlier, the time is at 8～15 minutes, to avoid the sand setting bit freezing, carries drilling tool on then, and supercharger stops air feed, and the manual flap type of opening kill manifold is laid down the pressure in the drilling tool, and then shackle, makes up a joint; Connect single after, start and keep behind the air compressor machine down-hole equipment not rotate, slowly transfer drilling tool on earth, add the pressure of the drill, utilize the surplus heart to push up loose core grabber, carry drilling tool on then than coring weight big 10%～50%, after recovering suspending weight, start rotating disk, increase to recommendation the pressure of the drill gradually; Instrument should check after going out well, guarantee safety joint, inside and outside tube, stabilizer screw thread do not have damage, urceolus do not have bending, its inner/outer tube straightness accuracy must not be greater than 4.5mm; The use so that core next time.
Claims (3)
1, a kind of gas drilling centering technique comprises core preparatory technology and construction technology, it is characterized in that:
A, the described preparatory technology of coring are:
(1) on ground coring tool assembling and inspection are finished earlier, then coring tool is connected on the drilling tool, and 0.5m place, top at the bottom of the lower going-into-well;
(2) cycle rotation drilling tool, the sensitive table of check and correction is driven air compressor simultaneously and is purged the shaft bottom, begins core-drilling after making the shaft bottom clean;
B, described construction technology are:
(1) the pith parameter is set to: the pressure of the drill 10-30KN, tolerance 20-50m
3/ min, rotating speed 30-50rpm; The core-drilling parameter is set to: the pressure of the drill 10-30KN, tolerance 20-50m
3/ min, rotating speed 30-50rpm;
(2) start rig, slowly transfer drilling tool, allow drill bit contact the shaft bottom, slowly increase the pressure of the drill, core-drilling under pith parameter of setting and drilling parameter;
(3) in the core-drilling, do not stop compressor, drill bit is not lifted from the shaft bottom, and in the core-drilling, as the card heart, the mill heart cuts the heart immediately and pulls out of hole, and meets leakage, overflow, blowout, stops coring operation immediately.
2, gas drilling centering technique according to claim 1 is characterized in that: slowly transfers in the drilling tool described, and when seriously being hampered, following rock bit reaming.
3, gas drilling centering technique according to claim 1 is characterized in that: if meet sand setting, drive air compressor to purge in boring down, remove sand setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100496308A CN100532781C (en) | 2007-07-30 | 2007-07-30 | Gas drilling centering technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100496308A CN100532781C (en) | 2007-07-30 | 2007-07-30 | Gas drilling centering technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101100931A CN101100931A (en) | 2008-01-09 |
| CN100532781C true CN100532781C (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100496308A Active CN100532781C (en) | 2007-07-30 | 2007-07-30 | Gas drilling centering technique |
Country Status (1)
| Country | Link |
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| CN (1) | CN100532781C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816328A (en) * | 2017-11-13 | 2018-03-20 | 四川川庆石油钻采科技有限公司 | A kind of hermetic core taking tool and sealing core drill technique |
| CN109807400B (en) * | 2019-04-02 | 2020-04-21 | 游晓东 | A residual clearing device and drilling equipment for behind trompil |
| CN111350466A (en) * | 2020-04-22 | 2020-06-30 | 中化明达生态环境治理有限公司 | Sampling method for improving sampling rate of oil sand layer |
-
2007
- 2007-07-30 CN CNB2007100496308A patent/CN100532781C/en active Active
Non-Patent Citations (12)
| Title |
|---|
| 塔深1井超深井段取心工艺. 王土权.钻采工艺，第30卷第4期. 2007 |
| 塔深1井超深井段取心工艺. 王土权.钻采工艺，第30卷第4期. 2007 * |
| 常规取心作业方法（中华人民共和国石油天然气行业标准 SY/T 5356-1999）. 1-3，国家石油和化学工业局. 1999 钻井取心技术. 李海石 等，72-78，石油工业出版社. 1993 |
| 常规取心作业方法(中华人民共和国石油天然气行业标准 SY/T 5356-1999). 1-3，国家石油和化学工业局. 1999 * |
| 气动贯通式潜孔锤反循环连续取心取样钻进新技术在河南钼矿中应用. 郝树青等.钻采工艺，第29卷第4期. 2006 |
| 气动贯通式潜孔锤反循环连续取心取样钻进新技术在河南钼矿中应用. 郝树青等.钻采工艺，第29卷第4期. 2006 * |
| 深井灰岩破碎地层取心技术及应用. 成景民等.钻采工艺，第29卷第3期. 2006 |
| 深井灰岩破碎地层取心技术及应用. 成景民等.钻采工艺，第29卷第3期. 2006 * |
| 用空气作循环流体进行水平取心. 刘骅等.钻采工艺，第18卷第1期. 1995 |
| 用空气作循环流体进行水平取心. 刘骅等.钻采工艺，第18卷第1期. 1995 * |
| 空气潜孔锤取心钻进技术在水平钻孔中的应用. 孙耀民等.西部探矿工程，第7卷第3期. 1995 |
| 空气潜孔锤取心钻进技术在水平钻孔中的应用. 孙耀民等.西部探矿工程，第7卷第3期. 1995 * |
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| Publication number | Publication date |
|---|---|
| CN101100931A (en) | 2008-01-09 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM GROUP CHUANQING DRILLING ENGINEER Free format text: FORMER OWNER: SICHUAN PETROLEUM ADMINISTRATION DRILLING CRAFT TECHNOLOGY RESEARCH INSTITUTE APPLICANT ADDRESS Effective date: 20081128 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20081128 Address after: Two section of South Zhongshan Road, Guanghan Road, Sichuan Province, China, postcode 618300 Applicant after: Drilling Technology Institute, Chuanqing Drilling Engineering Co.,Ltd. of China National Petroleum Corp. Address before: Two section of South Zhongshan Road, Guanghan Road, Sichuan Province, China, postcode 618300 Applicant before: Drilling and production technology Research Institute of Sichuan Petroleum Administration |
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| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM GROUP CHUANQING DRILLING ENGINEERI Free format text: FORMER OWNER: SICHUAN PETROLEUM ADMINISTRATION DRILLING CRAFT TECHNOLOGY RESEARCH INSTITUTE Effective date: 20081128 |
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