CN105545205A - High-strength gas extraction ground L-shaped drilling method for fully mechanized caving faces - Google Patents
High-strength gas extraction ground L-shaped drilling method for fully mechanized caving faces Download PDFInfo
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- CN105545205A CN105545205A CN201510979322.XA CN201510979322A CN105545205A CN 105545205 A CN105545205 A CN 105545205A CN 201510979322 A CN201510979322 A CN 201510979322A CN 105545205 A CN105545205 A CN 105545205A
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- 238000005553 drilling Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000000605 extraction Methods 0.000 title claims abstract description 13
- 239000003245 coal Substances 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000011398 Portland cement Substances 0.000 claims abstract description 5
- 239000003208 petroleum Substances 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 239000011435 rock Substances 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- PPTYJKAXVCCBDU-UHFFFAOYSA-N Rohypnol Chemical compound N=1CC(=O)N(C)C2=CC=C([N+]([O-])=O)C=C2C=1C1=CC=CC=C1F PPTYJKAXVCCBDU-UHFFFAOYSA-N 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 7
- 238000011282 treatment Methods 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000004568 cement Substances 0.000 description 8
- 241001074085 Scophthalmus aquosus Species 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
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- 230000035699 permeability Effects 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
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- 229920002678 cellulose Polymers 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical group O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- 229940080314 sodium bentonite Drugs 0.000 description 1
- 229910000280 sodium bentonite Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
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- 239000002689 soil Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Abstract
The invention particularly discloses a high-strength gas extraction ground L-shaped drilling method for fully mechanized caving faces. The problem that existing extraction methods are not suitable for existing coal seams with poor breathability and the small gas content is solved. The ground L-shaped drilling method includes the steps that a, a vertical well section is formed along the surface of a coal seam; b, a bent section and a horizontal hole section are sequentially formed at the lower end of the vertical well section; c, well logging operation is carried out in the drilling process, a well is rounded through a well rounding device, and casing pipes are attempted to be downed; d, the casing pipes are lifted through a lift and clamped through lifting clamps to be downed, the petroleum casing pipe is downed to the horizontal hole section, the technical casing pipe is downed to the bent section, the surface-layer casing pipe is downed to the vertical well section, the casing pipes are connected through screw threads, and recording and filing are carried out; e, the well is cemented through PO42.5 portland cement, the casing pipes of the well sections are closed, and it is guaranteed that no hydraulic connection exists between aquifers of a bedrock section; f, pressure is tested after well cementing is finished till the requirement is met, and next-step construction is carried out. By means of the ground L-shaped drilling method, the contradiction between coal mining and gas treatment work in time and space is avoided while the safety production environment of a mine is improved.
Description
Technical field
The present invention relates to coal mine gas pumping method, be specially a kind of high strength Gas Full-Mechanized Caving Face extraction ground L-type boring method.
Background technology
In recent years, along with the pit mining degree of depth increases, and newly-built and part producing mine shifts to Taiyuan seam group, gas problem highlights gradually, particularly high, the fully mechanized coal face of thick seam large mining, though coal seam gas-bearing capacity is lower, gas absolute discharge is comparatively large, becomes the principal element of restriction work plane high-efficiency mining.
At present, all adopt top board suction road, high drainage roadway, large diameter borehole extraction stope gas, all obtain good result, but for poor air permeability, primitive coalbed that gas bearing capacity is little, above-mentioned pumping method can not be suitable for.
Summary of the invention
The present invention, in order to the problem solving existing poor air permeability, the little coal seam of gas bearing capacity exists inapplicable existing pumping method, provides a kind of high strength Gas Full-Mechanized Caving Face extraction ground L-type boring method.
The present invention adopts following technical scheme to realize: high strength Gas Full-Mechanized Caving Face extraction ground L-type boring method, adopt following steps: a, analyze well logging, geology, record, vertical shaft section is opened along coal surface, JJX-3D high precision gradient meter is adopted to detect top, azimuth situation, to adjust drilling parameter in time; B, open bending section and lateral aperture section successively in the lower end of vertical shaft section, meanwhile, adopt BakerHughesMWD wireless drilling logging system keyhole track, and install aperture centralizer additional; Observing carry out mud logging operation in strict accordance with sieve residue log, drilling-time log, bore liquid well logging, gas detection logging, simple hydrological observation, circulation in c, process of drilling, holing to meeting designing requirement, and with under circle well device circle well, sleeve pipe examination; D, the lifting of employing hoist, elevator clamping carry out setting of casing, petroleum casing pipe under lateral aperture section, protective casing under bending section, and vertical shaft section layer sleeve pipe, adopts screwed connection between each sleeve pipe, and record files; E, employing PO42.5 portland cement are cemented the well, and close each well section sleeve pipe, guarantee in the middle of each aquifer of rock section without hydraulic connection; After f, well cementation terminate, pressure testing after surface pipe Hou Ning 24h, production casing solidifies in 48-72h, and cleaning bottom of hole does withstand voltage test deeply to foramen primum, until after reaching requirement, carries out next construction.
Ground L-type drilling gas extraction technology is the integrated innovation that hole and suction road gas control technology are found in ground, because ground plane apertures position can be selected beyond subsidence scope, effectively prevent ground and found the drawbacks such as " disconnected hole, cut hole, the wrong hole " in hole, also avoid suction road construction period length, influenced each other with mining work activities, easily cause stope to take over the difficult problems such as nervous, also reduce gas control engineering quantity and expense simultaneously, all have obvious advantage in economic benefit or in social benefit; Ground L-type boring is simultaneously arranged in roof 3-5 and doubly adopts in thick rock stratum, along with the propelling of work plane and being caving of top board, boring is constantly cut off or fractures, the whole hole of boring is made to be positioned at the back upper place of face upper corner angle all the time, efficiently solve boring and the time-space registration problem of the advance of the face in gas control, administer for high tension coal mining Gas Full-Mechanized Caving Face and open new approach, overcome existing poor air permeability, problem that the little coal seam of gas bearing capacity exists inapplicable existing pumping method.
Ground of the present invention L-type boring method, can continuous and effective in formation negative pressuren zone, face upper corner angle back upper place, carry out extraction constantly, surface drilling (straight hole) is better than far away in extraction efficiency, and its borehole failure risk obtains great reduction, lateral aperture section high drainage roadway can keep boring effective all the time, while improving mine safety production environment, avoid mining and be operated in contradiction on time and space with gas control, also being convenient to the utilization realizing gas resources, is a Green Mining Technology.
Detailed description of the invention
High strength Gas Full-Mechanized Caving Face extraction ground L-type boring method, adopt following steps: a, analyze well logging, geology, record, open vertical shaft section along coal surface, adopt JJX-3D high precision gradient meter to detect top, azimuth situation, to adjust drilling parameter in time; B, open bending section and lateral aperture section successively in the lower end of vertical shaft section, meanwhile, adopt BakerHughesMWD wireless drilling logging system keyhole track, and install aperture centralizer additional; Observing carry out mud logging operation in strict accordance with sieve residue log, drilling-time log, bore liquid well logging, gas detection logging, simple hydrological observation, circulation in c, process of drilling, holing to meeting designing requirement, and with under circle well device circle well, sleeve pipe examination; D, the lifting of employing hoist, elevator clamping carry out setting of casing, petroleum casing pipe under lateral aperture section, protective casing under bending section, and vertical shaft section layer sleeve pipe, adopts screwed connection between each sleeve pipe, and record files; E, employing PO42.5 portland cement are cemented the well, and close each well section sleeve pipe, guarantee in the middle of each aquifer of rock section without hydraulic connection; After f, well cementation terminate, pressure testing after surface pipe Hou Ning 24h, production casing solidifies in 48-72h, and cleaning bottom of hole does withstand voltage test deeply to foramen primum, until after reaching requirement, carries out next construction.
During sieve residue log, Quaternary system does not drag for sand sample, but must judge interface of basement rock, and after entering basement rock, every 1m drags for 1 burnt-in sand.Be set to more than object coal seam approximately 20m from table, every 5m gets the chip sample of 500mg, enters the chip sample that the every 5m of horizontal segment gets 500mg, bores chance every 1 meter of special circumstances and gets 500mg chip sample.
Pitch requirements during drilling-time log: spudding in wear cement plug from two, every 1 meter of record 1 point.Catastrophe point when will record brill at any time, so that Timeliness coverage coal seam, blocks that accurate coal seam is dark, thickness etc.Maintenance data of holes drilled is relatively stable as far as possible, to improve the validity of parameter reflection formation lithology when boring, and non-geologic(al) factor when record causes vacation to bore.Constantly check drilling tool length and well depth, often beaten one single and pull out of hole before must proofread well depth, well depth error must not more than 0.1 meter.Must not count when full leakage gets brill and exceed 0.5% of sum, target zone well section brill time point must not leak to be got.
The every 8h of bore liquid well logging does once full performance measurement; Every 2h measures a general performance (density, viscosity).When coal seam well section or discovery gas display exception, METHOD FOR CONTINUOUS DETERMINATION bore liquid density, viscosity, and make a record.Before getting coal core, once a complete set of performance measurement to be done to bore liquid.
Simple hydrological observation is bored and is met leakages, solution cavity, large crack, zone of fracture seriously cave in interval, accomplish, to stop depth registration detailed, clear; Consumption is observed: observation per hour 1 time, and less than the round trip of 1 hour, every round trip observed 1 time, and when finding flushing liquor leakage, every 10 ~ 30min observes 1 time, when flushing liquor is all missed, and should open its maximum wastage of large pump quantitative determination; Water-level observation: each observation 1 water level after each upper brill, before lower brill, mensuration water temperature during abnormal conditions.Boring consumption and round trip water-level observation, number of times should reach should survey 100% of number of times.
Well logging is to monitor boring real time offset amount.Logging equipment inspection is carried out in requirement in earlier stage and equipment aperture is arranged, fixing, installation work; Various logger presses scale and the work of verification criteria check.Vertical section conventional logging project has apparent resistivity, natural potential, naturally radioactive, artificial radioactivity, hole deviation angle, azimuth.
Well logging personnel conscientiously carry out well logging, adopt JJX-3D high precision gradient meter often to detect, the change of monitoring eyelet track to the drift angle of boring and azimuth, when have transfinite sign time, adopt directional tool and screw rod directional tool to correct in time.Vertical section comprehensive logging curve will be submitted to after having logged well; Drift angle and bearing data and exact shift tables of data of holing are provided.
In creeping into every drilling depth 100m, see basement rock, lower pipe before and whole hole all to carry out drilling tool and measure and record.When drilling tool error rate is more than 1.0 ‰, carry out reasonable adjustment in time.
According to condition of construction in the past, estimate that this drilling construction middle and upper part is easily missed, slip casting shutoff should be noted.Project management department should carry out slip casting shutoff prediction scheme and relevant supplies prepare, and must keep a close eye in construction, finds leakage situation, reports project management department immediately, and carry out slip casting shutoff operation in time.
This genus directional drilling of drilling, the equipment mainly used and instrument have: GZ-2000 water source rig; F-500 type slush pump; 6135-190HP diesel engine; TBD236V8 diesel engine; QZ200 × 2 type type mud purification desander; QY-1 type mud detector; NBB-300/6-12 type grouting pump; Ф 165mm type helicoid hydraulic motor; Φ 146mm non magnetic drill collar; JJX-3D high precision gradient meter; BakerHughesMWD wireless drilling logging system.
Bore process parameter mainly refers to the parameters such as the pressure of the drill, revolution, mud circulation amount, and the selection of technological parameter, has influence on drilling efficiency and drilling quality.Tricone bit drilling technical parameter is adopted to be in construction: middle the pressure of the drill, huge discharge, middle and slow speed of revolution.
When adopting tricone bit and helicoid hydraulic motor drill bit to construct, the pressure of the drill numerical value that rock bit adopts is no more than 70% of drill collar weight, perforate, change layer, strata condition abnormal time, the pressure of the drill, rotating speed need to reduce.
Select low solid polymer bore liquid to carry out retaining wall in construction to creep into, specific requirement material with slurry is sodium bentonite, soda ash, high-viscosity cellulose, humic acid potassium, PAC-141 or hydrolyzed polyacrylamide HPH.
Mud property requires as density: 1.05 ~ 1.15g/cm3; Funnel viscosity: 20 ~ 30; Fluid loss: < 10ml/30min; Mud skin depth: 1mm; Sand content: be less than 0.4%; PH value: 8 ~ 9.Conscientiously mud property is observed in construction, when finding that performance does not reach construction requirement, adjust in time, when sizing mixing, with mixer, mud is adjusted, along circulating slot, mud is slowly flowed in mud pit, try not before trip-out to adjust mud, to prevent proportion inequality from causing whitewashing, in mud, clear water must not be added.Make a record in construction, carry out solid phase cleaning work, prevent accident in well from occurring.
On-the-spot mud materials management will be accomplished: drill site is equipped with the field property of flush fluid testing tools such as funnel viscometer, fluid loss tester, densometer, sand content test cup and pH test paper, and establishes special messenger to be responsible for keeping; Drill site mud purification, desanding device are as vibrosieve, hydrocyclone etc., and when normally creeping into, each class of running is no less than 6 hours, establish special messenger to be responsible for clearing up the landwaste of circulating slot, sedimentation tank system simultaneously, carry out solid phase cleaning work; The swell soil of pulping, chemical treatments and other materials must take rainproof, moisture preventive measure, must not make moist, luming affects result of use.
According to stratum, this area target zone gas bearing condition and strata pressure, do not require in this well construction process to use preventer, but should take blowout prevention procedure, specific requirement is as follows: select rational mud density, viscosity.Before entering coal seam, adjust mud property.Adopt lower mud viscosity as far as possible, in order to reduce the swabbing pressure or surge pressure that make a trip in process; When needing to increase the weight of bore liquid, answering keyhole liquid to increase the weight of speed, preventing from pressing Lou stratum because increasing the weight of excessive velocities.Under get into the end, control turn on pump pump pressure, prevent from suppressing Lou stratum.Bore chance coal seam section and will slow down drilling speed, find that abnormal the stopping immediately of boring is bored, above carry drilling tool, circulate with small displacement; For preventing blowout from occurring, high-density drilling material will be laid in well site; When there is blowout sign, circulation limit, limit should be adopted immediately to increase the weight of well killing method; If just overflow, and do not develop into blowout, can circulate and increase the weight of bore liquid, degasification on one side.Bore liquid increases the weight of speed to be determined according to coal gas active degree, often circulates one week, at least will improve density 0.05 ~ more than 0.10g/cm3.
Cementing requirements adopts PO42.5 Portland cement.Cement paste proportion requires about 1.75g/cm3, closes each well section sleeve pipe, guarantees in the middle of each aquifer of rock section without hydraulic connection.The rock dust at the bottom of hole wall and hole should be removed before well cementation, and use the experiment of water quality identical in boring, water temperature making cement on ground.Before cement injection, mud in turn on pump circulation port, makes its import and export performance basically identical.And note the clear water isolation of some, about quantity 2m3.After well cementing operation starts, carry out continuously, must not pause in midway, from cement injection, terminate to slip casting, shorten whole activity duration as far as possible.Large pump amount need be opened during cement injection, make cement paste keep turbulent fluidised form, prevent cement paste channelling, guarantee cementing quality.During well cementation, captain must preside over anchorage at the scene, and production, geological technique personnel must carry out instructing, checking cementing design, construction method implementation status at the scene, forbids all behaviors of violating cementing design and way.
After well cementation terminates, pressure testing after surface pipe Hou Ning 24h, pressure testing >=6Mpa, it is qualified that step-down in 30 minutes is not more than 0.5Mpa; Production casing solidifies in 48 ~ 72h, and cleaning bottom of hole does withstand voltage test deeply to foramen primum, and aperture is suppressed and is not less than 12Mpa, and it is qualified that step-down in 30 minutes is not more than 0.5Mpa, otherwise ejection for water plugging again, until after reaching requirement, carry out bottom construction.Control in strict accordance with ISO9001:2008 special process, in operation process, carry out procedure parameter record.
Claims (1)
1. a high strength Gas Full-Mechanized Caving Face extraction ground L-type boring method, it is characterized in that: adopt following steps: a, analyze well logging, geology, record, vertical shaft section is opened along coal surface, JJX-3D high precision gradient meter is adopted to detect top, azimuth situation, to adjust drilling parameter in time; B, open bending section and lateral aperture section successively in the lower end of vertical shaft section, meanwhile, adopt BakerHughesMWD wireless drilling logging system keyhole track, and install aperture centralizer additional; Observing carry out mud logging operation in strict accordance with sieve residue log, drilling-time log, bore liquid well logging, gas detection logging, simple hydrological observation, circulation in c, process of drilling, holing to meeting designing requirement, and with under circle well device circle well, sleeve pipe examination; D, the lifting of employing hoist, elevator clamping carry out setting of casing, petroleum casing pipe under lateral aperture section, protective casing under bending section, and vertical shaft section layer sleeve pipe, adopts screwed connection between each sleeve pipe, and record files; E, employing PO42.5 portland cement are cemented the well, and close each well section sleeve pipe, guarantee in the middle of each aquifer of rock section without hydraulic connection; After f, well cementation terminate, pressure testing after surface pipe Hou Ning 24h, production casing solidifies in 48-72h, and cleaning bottom of hole does withstand voltage test deeply to foramen primum, until after reaching requirement, carries out next construction.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832848A (en) * | 2021-03-05 | 2021-05-25 | 湖南科技大学 | Construction method for preventing drilling and spraying holes in drilling construction process of extremely-soft coal seam |
| CN113210125A (en) * | 2021-05-17 | 2021-08-06 | 鄂托克旗建元洗煤有限责任公司 | Method and system for partial middling heavy medium rewashing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693654A (en) * | 2005-06-02 | 2005-11-09 | 淮南矿业(集团)有限责任公司 | Gas pressure relief method of ground drilling extraction minery and goaf |
| US6968893B2 (en) * | 2002-04-03 | 2005-11-29 | Target Drilling Inc. | Method and system for production of gas and water from a gas bearing strata during drilling and after drilling completion |
| CN101985888A (en) * | 2010-10-25 | 2011-03-16 | 中联煤层气国家工程研究中心有限责任公司 | Method for draining gas of highly gassy coal mine |
| CN104131831A (en) * | 2014-06-12 | 2014-11-05 | 中国矿业大学 | Coal-bed gas well vertical three-dimensional united extraction method |
| CN104405283A (en) * | 2014-10-22 | 2015-03-11 | 山西蓝焰煤层气集团有限责任公司 | Technique for extracting gas from L-shaped ground drilling well in mining area |
| CN105134286A (en) * | 2015-10-13 | 2015-12-09 | 山西晋煤集团技术研究院有限责任公司 | Method for extracting gas of gob of L-shaped well |
-
2015
- 2015-12-23 CN CN201510979322.XA patent/CN105545205B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6968893B2 (en) * | 2002-04-03 | 2005-11-29 | Target Drilling Inc. | Method and system for production of gas and water from a gas bearing strata during drilling and after drilling completion |
| CN1693654A (en) * | 2005-06-02 | 2005-11-09 | 淮南矿业(集团)有限责任公司 | Gas pressure relief method of ground drilling extraction minery and goaf |
| CN101985888A (en) * | 2010-10-25 | 2011-03-16 | 中联煤层气国家工程研究中心有限责任公司 | Method for draining gas of highly gassy coal mine |
| CN104131831A (en) * | 2014-06-12 | 2014-11-05 | 中国矿业大学 | Coal-bed gas well vertical three-dimensional united extraction method |
| CN104405283A (en) * | 2014-10-22 | 2015-03-11 | 山西蓝焰煤层气集团有限责任公司 | Technique for extracting gas from L-shaped ground drilling well in mining area |
| CN105134286A (en) * | 2015-10-13 | 2015-12-09 | 山西晋煤集团技术研究院有限责任公司 | Method for extracting gas of gob of L-shaped well |
Non-Patent Citations (2)
| Title |
|---|
| 余大有等: "《淮南刘庄煤矿定向水平井施工技术研究》", 《中国煤炭地质》 * |
| 杨富春: "《超大口径钻孔施工技术》", 《探矿工程(岩土钻掘工程)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832848A (en) * | 2021-03-05 | 2021-05-25 | 湖南科技大学 | Construction method for preventing drilling and spraying holes in drilling construction process of extremely-soft coal seam |
| CN112832848B (en) * | 2021-03-05 | 2022-05-20 | 湖南科技大学 | Construction method for preventing drilling and spraying holes in drilling construction process of extremely-soft coal seam |
| CN113210125A (en) * | 2021-05-17 | 2021-08-06 | 鄂托克旗建元洗煤有限责任公司 | Method and system for partial middling heavy medium rewashing |
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Application publication date: 20160504 Assignee: DATONG COAL MINE TASHAN COAL MINE CO., LTD. Assignor: Datong Coal Mine Group Co., Ltd. Contract record no.: 2019140000001 Denomination of invention: High-strength gas extraction ground L-shaped drilling method for fully mechanized caving faces Granted publication date: 20180608 License type: Exclusive License Record date: 20190524 |