CN104948108A - Hole drilling and poking technology of kilometer drilling machine for coal seam gas hole drilling - Google Patents
Hole drilling and poking technology of kilometer drilling machine for coal seam gas hole drilling Download PDFInfo
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- CN104948108A CN104948108A CN201510286620.0A CN201510286620A CN104948108A CN 104948108 A CN104948108 A CN 104948108A CN 201510286620 A CN201510286620 A CN 201510286620A CN 104948108 A CN104948108 A CN 104948108A
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Abstract
The invention relates to the coal seam gas drainage technology, in particular to a hole drilling and poking technology of a kilometer drilling machine for coal seam gas hole drilling, and solves the problems that completed drilled holes of the kilometer drilling machine are blocked in a later period, holes cannot be effectively poked due to complex and multiple branches in the holes, and the gas drainage effect is lowered. The technology comprises the steps that 1 normal hole drilling is conducted, the drift angle of a downhole motor used in the hole drilling is 1.25 degrees, and a main hole (2) and branch holes (1) are formed by the hole drilling; 2 after a collapsed hole (3) is formed in the main hole (2), the kilometer drilling machine is used continuously to carry out hole poking operations; 3 hole poking is conducted, the kilometer drilling machine is used continuously, a downhole motor with the drift angle of 1.75 degrees is used and sent to the branches of the main hole (2) and the branch holes (3), the downhole motor can enter the main hole (2) successfully by using remote control, and punching and construction are carried out on the position of the collapsed hole until the position of the collapsed hole is through completely. According to the technology, the dredge problem of the collapsed hole in the kilometer drilling machine can be successfully solved, the long drilled holes are maintained in an unblocked mode, the coal wall of an original hole drilling channel is not damaged, secondary damage caused by hole poking is avoided, used tools are simple in improvement, the effect is good, the cost is low, and the gas drainage effect is ideal.
Description
Technical field
The present invention relates to coal bed gas drainage technology, be specially a kind of coal-bed gas boring km drill hole of drilling machine via process.
Background technology
Type rig existing coal master in VLD-1000 wants one of drilling equipment, for long distance boring of constructing, has polarization, drilling depth length, single hole gas density and pumping volume high.The drilling track that km drilling machine construction is formed as schematically shown in Figure 1, in the later maintenance after boring is completed, often occurs that some coal seam, location collapse hole in hole causes drilling gas cannot the situation of effective extraction.In this case with regard to needs, boring is dredged, make it recover airing function.Be all at present use original rig and drill bit, be deep in hole after reaching collapse hole position drilling again and make it unimpeded.But find in practice of construction, disclose in the process of hole at tissue, Kong Nei branch is many and complicated, use original drill bit and drilling rod often cannot enter in Main Branches smoothly in bifurcation, accurately cannot control trend, cause disclosing hole thoroughly, can not effectively improve drill mash gas effect.For this reason, technician conducts in-depth research, and finds that the structure of drill bit causes controlling ineffective major reason.
Summary of the invention
The present invention, in order to solve the boring of the completion later stage plug-hole of km drilling machine construction, because the many and complexity of Kong Nei branch causes and effectively cannot disclose hole, causes the problem reducing gas drainage under suction effect.Provide a kind of coal-bed gas boring km drill hole of drilling machine via process.
Technical scheme of the present invention is, a kind of coal-bed gas boring km drill hole of drilling machine via process, step is
(1) normal drill, the drift angle of the downhole motor that boring uses is 1.25 °, and boring forms main aperture 2 and a hole 1,
(2), after collapse hole 3 appears in main aperture 2, continuation km rig carries out through hole operation,
(3) through hole, also uses km rig, uses the downhole motor of 1.75 ° of drift angles, be sent to main aperture and hole bifurcation after, this downhole motor can enter in main aperture 2 under remote control smoothly, and carries out punching construction, until collapse hole place is completely through to collapse hole position.
If applicant is with old 1.25 ° of drift angle downhole motors, camber is little, in some bifurcation of original boring, when not destroying hole wall, this motor cannot visit main aperture wall, therefore manual operation cannot control motor trend, finally enter all the time in branched hole, effective through hole cannot be implemented to main aperture.And used 1.75 ° of downhole motors, just can visit the hole wall of main aperture, such downhole motor just can enter in main aperture smoothly, then directly rinses main aperture with water under high pressure and can complete cleaning.
Technique of the present invention, can solve the problem of dredging after collapse hole in km boring smoothly, keep the unimpeded of long drilled holes, do not destroy original boring duct rib, avoid, because of the through hole morning of man-made further destroy once, using instrument transformation simple, effective, cost is low, and gas drainage under suction is satisfactory for result.
Accompanying drawing explanation
Fig. 1 is bore position schematic diagram
Fig. 2 is 1.75 ° of downhole motor structure charts that the present invention uses
The existing 1.25 ° of downhole motor structure charts of Fig. 3.
Detailed description of the invention
A kind of coal-bed gas boring km drill hole of drilling machine via process, step is: as schematically shown in Figure 1,
(1) normal drill, the drift angle of the downhole motor that boring uses is 1.25 °, and boring forms main aperture 2 and a hole 1,
(2), after collapse hole 3 appears in main aperture 2, continuation km rig carries out through hole operation,
(3) through hole, also uses km rig, uses the downhole motor of 1.75 ° of drift angles, be sent to main aperture and hole bifurcation after, this downhole motor can enter in main aperture 2 under remote control smoothly, and carries out punching construction, until collapse hole place is completely through to collapse hole position.
Claims (1)
1. a coal-bed gas boring km drill hole of drilling machine via process, is characterized in that step is:
(1) normal drill, the drift angle of the downhole motor that boring uses is 1.25 °, and boring forms main aperture (2) and a hole (1),
(2), after collapse hole (3) appears in main aperture (2), continuation km rig carries out through hole operation,
(3) through hole, also uses km rig, changes the downhole motor of use 1.75 ° of drift angles, be sent to main aperture and hole bifurcation after, this downhole motor can enter in main aperture (2) under remote control smoothly, and carries out punching construction, until collapse hole place is completely through to collapse hole position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286620.0A CN104948108A (en) | 2015-05-30 | 2015-05-30 | Hole drilling and poking technology of kilometer drilling machine for coal seam gas hole drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286620.0A CN104948108A (en) | 2015-05-30 | 2015-05-30 | Hole drilling and poking technology of kilometer drilling machine for coal seam gas hole drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104948108A true CN104948108A (en) | 2015-09-30 |
Family
ID=54163116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510286620.0A Pending CN104948108A (en) | 2015-05-30 | 2015-05-30 | Hole drilling and poking technology of kilometer drilling machine for coal seam gas hole drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104948108A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2441671A1 (en) * | 1998-11-20 | 2000-06-02 | Cdx Gas, Llc | Method and system for accessing subterranean deposits from the surface |
| CN102061933A (en) * | 2010-12-13 | 2011-05-18 | 山西晋城无烟煤矿业集团有限责任公司 | Long drilling positioning construction process |
| CN102704883A (en) * | 2012-05-06 | 2012-10-03 | 山西晋城无烟煤矿业集团有限责任公司 | Special fishing device for downhole motor rotor of kilometer-level drilling machine |
| CN103032025A (en) * | 2013-01-18 | 2013-04-10 | 中煤科工集团西安研究院 | Underground coal mine multipurpose overall crawler type full-hydraulic directional drilling machine |
-
2015
- 2015-05-30 CN CN201510286620.0A patent/CN104948108A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2441671A1 (en) * | 1998-11-20 | 2000-06-02 | Cdx Gas, Llc | Method and system for accessing subterranean deposits from the surface |
| CN102061933A (en) * | 2010-12-13 | 2011-05-18 | 山西晋城无烟煤矿业集团有限责任公司 | Long drilling positioning construction process |
| CN102704883A (en) * | 2012-05-06 | 2012-10-03 | 山西晋城无烟煤矿业集团有限责任公司 | Special fishing device for downhole motor rotor of kilometer-level drilling machine |
| CN103032025A (en) * | 2013-01-18 | 2013-04-10 | 中煤科工集团西安研究院 | Underground coal mine multipurpose overall crawler type full-hydraulic directional drilling machine |
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Application publication date: 20150930 |
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| WD01 | Invention patent application deemed withdrawn after publication |