CN105507814A - Coiled tubing conveyance type hydraulic jet drilling device for coal-bed gas wells and technological method of coiled tubing conveyance type hydraulic jet drilling device for coal-bed gas wells - Google Patents
Coiled tubing conveyance type hydraulic jet drilling device for coal-bed gas wells and technological method of coiled tubing conveyance type hydraulic jet drilling device for coal-bed gas wells Download PDFInfo
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- CN105507814A CN105507814A CN201610044371.9A CN201610044371A CN105507814A CN 105507814 A CN105507814 A CN 105507814A CN 201610044371 A CN201610044371 A CN 201610044371A CN 105507814 A CN105507814 A CN 105507814A
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- coiled tubing
- jetting
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- bed gas
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- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003245 coal Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- 210000002445 nipple Anatomy 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The invention discloses a coiled tubing conveyance type hydraulic jet drilling device for coal-bed gas wells and a technological method of the coiled tubing conveyance type hydraulic jet drilling device for the coal-bed gas wells. The coiled tubing conveyance type hydraulic jet drilling device comprises a ground coiled tubing device and a hydraulic jet drilling tool assembly. The ground coiled tubing device comprises a coiled tubing device, a blowout prevention pipe, a wellhead control device and an auxiliary device, and the auxiliary device comprises a liquid storage tank, a high-pressure pump and a small coal treatment system. The hydraulic jet drilling tool assembly comprises a coiled tubing connector, a safety release device, a check valve, a diverter and a hydraulic jet head which are connected sequentially from top to bottom. The coiled tubing conveyance type hydraulic jet drilling device and the technological method thereof have the advantages that the problem that steering depends on a whipstock previously is solved, and construction cost is reduced; high-pressure jet beams are used for jetting in different directions and depths of a coal bed, so that multilayer and single-layer multi-well drilling is achieved to increase the lengths of the wells in a coal-bed gas reservoir, enlarge the sweep area and increase gas yield, and great significance in coal-bed gas reservoir yield increase is achieved.
Description
Technical field
The present invention relates to cbm development technical field, particularly one is used for coal bed gas well coiled tubing conveying jetting drilling equipment and process thereof.
Background technology
Coal bed gas well (layer) adopts Multilateral Wells and coal seam internal drilling technology to be increase the effective means of resolving volume, increasing effective seepage area, improve flow conductivity in coal seam.Creep into for coal bed gas well Multilateral Wells at present and be drilling rod rotary drilling or screw drill drilling process with the technique of coal bed drilling, the instruments such as many employings whipstock make side opening jet hole, and need to be equipped with more ground special equipment and instrument, there is the equipment amount of employing large, operation technique is complicated, high in cost of production limitation.
At present creep into technology for coal bed gas well Multilateral Wells a lot.Publication CN201020224036.5 discloses a kind of device of no-radius radial direction well exploiting coal bed methane, this device utilizes high-pressure injection flexible pipe and DH eccentric center to lead the instruments such as footwear, high-pressure injection flexible pipe band jet nozzle enters flexible pipe guide pipe by casing head flank mouth, entering DH eccentric center again leads in the eccentric channel of footwear, the DH eccentric center eccentric channel led in footwear provides high-pressure injection flexible pipe from vertical duction level, utilizes jet nozzle to carry out the drilling well of radial level direction and creeps into; But namely this process has limitation as previously mentioned.In addition, publication CN201110123478.X and granted patent CN200910220786.7 individually disclose a kind of ultra-short-radius radial high-pressure water jet composite well drilling, completion tool and technique thereof and a kind of ultra-short radius radial well-drilling tool system, the technical scheme of these two patents is all carry the liquid with certain pressure by surface pump, through flexible pipe to down-hole, flexible pipe is after whipstock turns to, utilize the high-pressure injection of jet bit in the earth formation, carry out irrotational slipping drilling; But, in drilling process, flexible pipe rigidity under the effect of internal liquid high pressure is very strong, and steering gear is centering structure, the frictional resistance produced between flexible pipe and steering gear is larger, drilling apparatus only possesses irrotational slipping drilling function, so it cannot overcome frictional resistance by existing during steering gear, is difficult to the difficulty realizing long distance slipping drilling; Meanwhile, high-pressure injection slipping drilling desirably face-pumping provides higher hydraulic coupling, therefore requires very high to the voltage endurance capability of surface pump and manifold, limits the application of this technology.
Summary of the invention
The object of this invention is to provide a kind of directly in coal bed gas Open-Hole Section or horizontal section wellbore jetting boring, realize increasing coal seam resolve volume, increase effective seepage area, improve flow conductivity for coal bed gas well coiled tubing conveying jetting drilling equipment.
Another object of the present invention there is provided a kind of use above-mentioned jetting drilling equipment and then adopt high-pressure spray bundle in coal seam different directions and different depth spray, get out multiple small diameter borehole, be suitable for the long hole of coal bed gas well (layer) slit creep into and can multilayer position, creep into the many wells in layer position, with increase the length of well in bed gas reservoir, expand sweep area, improve methane output.
For this reason, technical solution of the present invention is as follows:
A kind of coal bed gas well coiled tubing that is used for carries jetting drilling equipment, comprises ground applications of coiled tubing unit and jetting bore hole tool assembly; Wherein:
Ground applications of coiled tubing unit comprises applications of coiled tubing unit, lubricator, control head and servicing unit; Servicing unit comprises fluid reservoir, high-pressure pump and ickings treatment system; Fluid reservoir is communicated with the oil pipe in applications of coiled tubing unit by high-pressure pump; This ground applications of coiled tubing unit function provides conveying Downhole jetting boring bar tool to object well section, and realize circulation canal and carry out the control of well head fluid, Stress control.
Jetting bore hole tool assembly comprise connect successively from top to bottom coiled tubing connector, safe releasing device, ball-and-seat, steering gear and jetting head; Coiled tubing connector is connected to applications of coiled tubing unit bottom; Steering gear is fluid pressure type flow-control steering gear, makes diverter body be bent to certain angle and realize jetting head to pit shaft side wall jet hole under hydraulic pressure promotes by suppressing in coiled tubing; The function of this jetting bore hole tool assembly is holed along coal seam (section) certain orientation to coal bed gas well, forms a small diameter long pit shaft, reach expansion and flow through the object such as area, productivity gain.
Particularly, steering gear comprises diverter body and is arranged on the steering knuckle below diverter body, connected by bending mechanism between diverter body and steering knuckle, in diverter body, be provided with tapering flow nipple, the first pad, spring, the second pad and push rod from top to bottom; First pad and the second pad center are provided with through hole, and the first pad and the second pad are press-fitted respectively and are fixed on spring top and bottom, push rod one end is fixed on the second pad bottom surface, the oblique extension of the other end be fixed on the offside inwall of steering knuckle bottom, when the hydraulic pressure entered in steering gear by tapering flow nipple reaches certain pressure, promote the first gasket compression spring below tapering flow nipple and promote push rod to make stressedly bottom steering knuckle to bend to certain angle.
Use the above-mentioned process realizing jetting boring for coal bed gas well coiled tubing conveying jetting drilling equipment, it comprises the steps:
S1, pit shaft earlier machine prepare;
S2, in well head installation ground applications of coiled tubing unit and pressure testing to qualified, jetting bore hole tool assembly is arranged on the bottom of coiled tubing in applications of coiled tubing unit, and utilizes ground applications of coiled tubing unit to drive jetting bore hole tool assembly G.I.H assigned address;
S3, startup are arranged on ground high-pressure pump and suppress in coiled tubing, by coiled tubing transmission of pressure to jetting bore hole tool assembly, when hydraulic pressure transfer is to steering gear, under hydraulic action, steering gear bends to certain angle, now the jetting bore hole tool assembly side that bends is resisted against on the borehole wall, and jetting head to be then against on the offside borehole wall and to aim at treats position of opening;
S4, continue to suppress, the liquid with certain pressure sprays forward through jetting head nozzle, produces active force, jet drilling shot borehole between high-speed jet and the coal seam borehole wall; After starting boring, the jetting bore hole tool assembly side that bends reduces because of the hydraulic pressure that causes against power losing the borehole wall, jetting head discharge capacity reduces, now, be that jetting head is sent pressurization the pressure of the drill to and crept into by coiled tubing, and form that high-speed jet bundle is broken by jetting head nozzle, cutting coal stratum creep into formation small diameter borehole;
S5, handling coiled tubing, make jetting bore hole tool assembly convert the down-hole degree of depth; Repetition step S3 and S4 carries out second and creeps into operation to N number of (N > 2) individual well.
Compared with prior art, this is used for, and coal bed gas well coiled tubing conveying jetting drilling equipment structure is simple, volume is little, and make its required drilling fluid total amount in actual underground work use procedure less, cost is low; Wherein, the rigidity that coiled tubing itself has and flexibility, can adapt to open hole well operating mode and well wellbore stability; And in device use steering gear to substitute traditional directional inclination device, and adopt fluid pressure type flow-control steering gear, in bore operation, not only the steering knuckle of steering gear can be made to be bent to certain angle by hydraulic control pressure without the need to sleeve pipe, realize jetting head and be against on pit shaft side wall precalculated position and carry out bore operation; In addition, from process angle, adopt coiled tubing conveying, jetting boring, relative to traditional CBM Fracturing technique, more be conducive to wellbore stratum in coal (layer) and form the long hole of slit, increase coal seam and resolve volume, increase effective seepage area, improve flow conductivity; And use this process that clear water or low content KCl solution can be adopted to carry out operation as drilling fluid, can not damage coal seam or comparatively Low Damage.
In sum, adopt above-mentioned jetting drilling equipment and process thereof, more ground special equipment and instrument need not be equipped with, reduce construction cost, and solve the problem in the past relying on whipstock to turn to; In addition, different directions in coal seam of high-pressure spray bundle and different depth is used to spray, get out multiple small diameter borehole, be suitable for the long hole of coal bed gas well (layer) slit creep into and can multilayer position, creep into the many wells in layer position, to increase the length of well in bed gas reservoir, expand sweep area, to improve gas output, significant to bed gas reservoir volume increase.
Accompanying drawing explanation
Fig. 1 is structural representation when not suppressing for coal bed gas well coiled tubing conveying jetting drilling equipment of the present invention;
Fig. 2 of the present inventionly turns to for the steering gear when row is suppressed of coal bed gas well coiled tubing conveying jetting drilling equipment the structural representation carrying out Multilateral Wells and creep into.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described further, but following embodiment has any restriction to the present invention absolutely not.
This is used for coal bed gas well coiled tubing conveying jetting drilling equipment, comprises ground applications of coiled tubing unit and jetting bore hole tool assembly; Ground applications of coiled tubing unit is used for providing conveying Downhole jetting boring bar tool to object well section, and realizes circulation canal and carry out the control of well head fluid, Stress control; Jetting bore hole tool assembly is used for holing along coal seam (section) certain orientation to coal bed gas well, forms a small diameter long pit shaft, flows through the object such as area, productivity gain to reach expansion.
Ground applications of coiled tubing unit comprises applications of coiled tubing unit, lubricator, control head and servicing unit; Servicing unit comprises fluid reservoir, high-pressure pump and ickings treatment system; Fluid reservoir to be formed with the coiled tubing in applications of coiled tubing unit by high-pressure pump and is communicated with, and regulated to pumping liquid in coiled tubing by high-pressure pump by adjusting high-pressure pump pump pressure to the pressure in jetting bore hole tool assembly; Wherein, control head, lubricator and ickings treatment system all carry out the assembling of ground applications of coiled tubing unit purchased from the existing equipment of market sale.
As shown in Fig. 1 ~ 2, jetting bore hole tool assembly comprise be threaded successively from top to bottom coiled tubing connector 2, safe releasing device 3, ball-and-seat 4, steering gear 5 and jetting 6; Coiled tubing connector 2 is connected to the bottom of the continuous oil pipe 1 of applications of coiled tubing unit.
Wherein, steering gear 5 adopts fluid pressure type flow-control steering gear, and comprise diverter body and be arranged on the steering knuckle below diverter body, connected by bending mechanism between diverter body and steering knuckle, particularly, bending mechanism selects liquid universal joint, tapering flow nipple, the first pad, spring, the second pad and push rod is provided with from top to bottom in diverter body, first pad and the second pad center are provided with through hole and the first pad and the second pad are press-fitted respectively and are fixed on spring top and bottom, the through-hole aperture of the first pad is less than flow nipple bottom inner diameter, the hydraulic pressure making liquid enter steering gear can be passed to by the first pad the thrust that spring transitions becomes to drive pushrod movement, push rod one end is fixed on the second pad and is close on the bottom surface of diverter body side sidewall, the oblique extension of the other end is also fixed on the offside inwall of steering knuckle bottom, when the hydraulic pressure entered in steering gear by tapering flow nipple reaches certain pressure, promote the first pad to make spring-compressed and promote push rod to make steering knuckle and diverter body form the angle of bend of 15 ~ 30 °, and after body-fluid pressure reduces, under the action of the spring, push rod returns to reset condition, and now steering knuckle and diverter body are returned to coaxial state.
Wherein, the actual flexion angle of this steering knuckle can adjust by selecting the thickness of the coefficient of elasticity of spring and the first pad according to job requirements under real well.
In the well drilling process carrying out Multilateral Wells, coiled tubing connector 2 is for being connected to one end of instrument or work string by coiled tubing, and corresponding pulling force, pressure and torsional forces can be born, by folding and unfolding coiled tubing by its with instrument or tubing string down to object well section, complete corresponding function behaviour; Safe releasing device 3 is arranged between downhole tool and coiled tubing connector, for when going wrong, and drilling tool in release well; In coiled tubing, blowout well kick is there is in ball-and-seat 4 for preventing; Jetting 6, for jet hole, according to kinetic energy-pressure energy transforming principle, utilizes high-pressure spray impinging earth strata, when after high-velocity fluid bundle Contact-impact to rock, speed reduces to zero suddenly, its kinetic transformation is water pressure energy, causes crushing rock formation stress, continues to impact the object then reaching boring.Wherein, coiled tubing connector 2, safe releasing device 3, ball-and-seat 4 and jetting 6 is the current underground work conventional equipment come from market purchasing.
Use the above-mentioned process realizing jetting boring for coal bed gas well coiled tubing conveying jetting drilling equipment, it comprises the steps:
S1, pit shaft earlier machine prepare, and namely complete the conventional preparation before underground work;
S2, in well head installation ground applications of coiled tubing unit and pressure testing to qualified, jetting bore hole tool assembly is arranged on the bottom of coiled tubing in applications of coiled tubing unit, and utilizes ground applications of coiled tubing unit to drive jetting bore hole tool assembly G.I.H assigned address;
S3, startup are arranged on ground high-pressure pump and suppress in coiled tubing, by coiled tubing transmission of pressure to jetting bore hole tool assembly, when hydraulic pressure transfer is to steering gear, under hydraulic action, steering gear bends to certain angle, now the jetting bore hole tool assembly side that bends is resisted against on the borehole wall, and jetting head to be then against on the offside borehole wall and to aim at treats position of opening;
S4, continue to suppress, the liquid with certain pressure sprays forward through jetting head nozzle, produces active force, jet drilling shot borehole between high-speed jet and the coal seam borehole wall; After starting boring, the jetting bore hole tool assembly side that bends reduces because of the hydraulic pressure that causes against power losing the borehole wall, jetting head discharge capacity reduces, now, be that jetting head is sent pressurization the pressure of the drill to and crept into by coiled tubing, and form that high-speed jet bundle is broken by jetting head nozzle, cutting coal stratum creep into formation small diameter borehole;
S5, handling coiled tubing, make jetting bore hole tool assembly convert the down-hole degree of depth; Repetition step S3 and S4 carries out second and creeps into operation to N number of (N > 2) individual well.
This process correction and overcome existing technology Problems existing, defect and deficiency, adapts to creep at coal bed gas well (layer), forms the long hole of slit, increases coal seam and resolves volume, increases effective seepage area, improves flow conductivity.
Claims (3)
1., for a jetting drilling equipment for coal bed gas well coiled tubing conveying, it is characterized in that, comprise ground applications of coiled tubing unit and jetting bore hole tool assembly; Wherein, ground applications of coiled tubing unit comprises applications of coiled tubing unit, lubricator, control head and servicing unit; Servicing unit comprises fluid reservoir, high-pressure pump and ickings treatment system; Fluid reservoir is communicated with the oil pipe in applications of coiled tubing unit by high-pressure pump; Jetting bore hole tool assembly comprise connect successively from top to bottom coiled tubing connector, safe releasing device, ball-and-seat, steering gear and jetting head; Coiled tubing connector is connected to applications of coiled tubing unit bottom; Steering gear is fluid pressure type flow-control steering gear, makes diverter body be bent to certain angle and realize jetting head to pit shaft side wall jet hole under hydraulic pressure promotes by suppressing in coiled tubing.
2. according to claim 1 for coal bed gas well coiled tubing conveying jetting drilling equipment, it is characterized in that, steering gear comprises diverter body and is arranged on the steering knuckle below diverter body, connected by bending mechanism between diverter body and steering knuckle, in diverter body, be provided with tapering flow nipple, the first pad, spring, the second pad and push rod from top to bottom; First pad and the second pad center are provided with through hole, and the first pad and the second pad are press-fitted respectively and are fixed on spring top and bottom, push rod one end is fixed on the second pad bottom surface, the oblique extension of the other end be fixed on the offside inwall of steering knuckle bottom, when the hydraulic pressure entered in steering gear by tapering flow nipple reaches certain pressure, promote the first gasket compression spring below tapering flow nipple and promote push rod to make stressedly bottom steering knuckle to bend to certain angle.
3. the process realizing jetting boring for coal bed gas well coiled tubing conveying jetting drilling equipment any one of the right to use 1 ~ 2 described in claim, it comprises the steps:
S1, pit shaft earlier machine prepare;
S2, in well head installation ground applications of coiled tubing unit and pressure testing to qualified, jetting bore hole tool assembly is arranged on the bottom of coiled tubing in applications of coiled tubing unit, and utilizes ground applications of coiled tubing unit to drive jetting bore hole tool assembly G.I.H assigned address;
S3, startup are arranged on ground high-pressure pump and suppress in coiled tubing, by coiled tubing transmission of pressure to jetting bore hole tool assembly, when hydraulic pressure transfer is to steering gear, under hydraulic action, steering gear bends to certain angle, now the jetting bore hole tool assembly side that bends is resisted against on the borehole wall, and jetting head to be then against on the offside borehole wall and to aim at treats position of opening;
S4, continue to suppress, the liquid with certain pressure sprays forward through jetting head nozzle, produces active force, jet drilling shot borehole between high-speed jet and the coal seam borehole wall; After starting boring, the jetting bore hole tool assembly side that bends reduces because of the hydraulic pressure that causes against power losing the borehole wall, jetting head discharge capacity reduces, now, be that jetting head is sent pressurization the pressure of the drill to and crept into by coiled tubing, and form that high-speed jet bundle is broken by jetting head nozzle, cutting coal stratum creep into formation small diameter borehole;
S5, handling coiled tubing, make jetting bore hole tool assembly convert the down-hole degree of depth; Repetition step S3 and S4 carries out second and creeps into operation to N number of (N > 2) individual well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044371.9A CN105507814B (en) | 2016-01-22 | 2016-01-22 | Water-jet drilling equipment and its process are conveyed for coal bed gas well coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044371.9A CN105507814B (en) | 2016-01-22 | 2016-01-22 | Water-jet drilling equipment and its process are conveyed for coal bed gas well coiled tubing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105507814A true CN105507814A (en) | 2016-04-20 |
| CN105507814B CN105507814B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610044371.9A Expired - Fee Related CN105507814B (en) | 2016-01-22 | 2016-01-22 | Water-jet drilling equipment and its process are conveyed for coal bed gas well coiled tubing |
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| CN (1) | CN105507814B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278090A (en) * | 2018-03-20 | 2018-07-13 | 西南石油大学 | A kind of chuck tool under coiled tubing when injection catheter |
| CN108868614A (en) * | 2018-07-25 | 2018-11-23 | 东北石油大学 | A kind of high-pressure hose and hydraulic jetting radial drilling method |
| CN109356526A (en) * | 2018-11-07 | 2019-02-19 | 中国地质科学院勘探技术研究所 | A kind of continuous deflecting forming hole method of injecting type |
| CN111502545A (en) * | 2020-04-07 | 2020-08-07 | 中煤科工集团西安研究院有限公司 | Near-horizontal pressurized directional drilling equipment and method for complex broken stratum under coal mine |
| CN113445915A (en) * | 2021-07-09 | 2021-09-28 | 中煤科工集团沈阳研究院有限公司 | Hydraulic deflecting directional drilling device and method |
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| CN105003197A (en) * | 2015-07-27 | 2015-10-28 | 盐城市新永佳石油机械制造有限公司 | Full-automatic screw drilling tool with positioning structure |
| CN205297334U (en) * | 2016-01-22 | 2016-06-08 | 廊坊开发区中油化油气技术服务有限公司 | It sprays drilling equipment to be used for coal seam gas well coiled tubing to carry water conservancy |
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2016
- 2016-01-22 CN CN201610044371.9A patent/CN105507814B/en not_active Expired - Fee Related
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| US5467834A (en) * | 1994-08-08 | 1995-11-21 | Maverick Tool Company | Method and apparatus for short radius drilling of curved boreholes |
| CN203285334U (en) * | 2013-05-24 | 2013-11-13 | 中国石油化工股份有限公司 | Radial horizontal well steering device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278090A (en) * | 2018-03-20 | 2018-07-13 | 西南石油大学 | A kind of chuck tool under coiled tubing when injection catheter |
| CN108868614A (en) * | 2018-07-25 | 2018-11-23 | 东北石油大学 | A kind of high-pressure hose and hydraulic jetting radial drilling method |
| CN108868614B (en) * | 2018-07-25 | 2020-02-21 | 东北石油大学 | High-pressure hose and hydraulic jet radial drilling method |
| CN109356526A (en) * | 2018-11-07 | 2019-02-19 | 中国地质科学院勘探技术研究所 | A kind of continuous deflecting forming hole method of injecting type |
| CN111502545A (en) * | 2020-04-07 | 2020-08-07 | 中煤科工集团西安研究院有限公司 | Near-horizontal pressurized directional drilling equipment and method for complex broken stratum under coal mine |
| CN111502545B (en) * | 2020-04-07 | 2022-03-01 | 中煤科工集团西安研究院有限公司 | Near-horizontal pressurized directional drilling equipment and method for complex broken stratum under coal mine |
| CN113445915A (en) * | 2021-07-09 | 2021-09-28 | 中煤科工集团沈阳研究院有限公司 | Hydraulic deflecting directional drilling device and method |
| CN113445915B (en) * | 2021-07-09 | 2024-04-26 | 中煤科工集团沈阳研究院有限公司 | Hydraulic deflecting directional drilling device and method |
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| Publication number | Publication date |
|---|---|
| CN105507814B (en) | 2017-09-29 |
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