CN102031931A - Self-rotating jet drilling device - Google Patents
Self-rotating jet drilling device Download PDFInfo
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- CN102031931A CN102031931A CN 201010555717 CN201010555717A CN102031931A CN 102031931 A CN102031931 A CN 102031931A CN 201010555717 CN201010555717 CN 201010555717 CN 201010555717 A CN201010555717 A CN 201010555717A CN 102031931 A CN102031931 A CN 102031931A
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Abstract
The invention relates to a self-rotating jet drilling device, which comprises a cylindrical shell, wherein the back end of the shell is provided with a tubular connecting part; a rotating part is rotatably arranged in the shell; the outer diameter of the rotating part is corresponding to the inner diameter of the shell; the front end of the rotating part is provided with a cylindrical extending section along the axial direction; the extending section extends out of the front end of the shell and is fixedly connected to a sprayer along the axial direction; the periphery of the rotating part is provided with a plurality of helical grooves; an axial through hole is arranged on the rotating part; blind holes are arranged in the sprayer from back to forth; the blind holes are communicated with the through hole; and the surface of the front end of the sprayer is provided with a plurality of jet holes connected to the blind holes and is also fixed with a cutter. The device can increase the drilling efficiency and the aperture quality, can form a jet hole unloading strip having a certain of diameter and depth on a coal layer by the double action of the cut drilling and jetting, can efficiently increase the gas well capacity on the coal layer and can increase the gas recovery ratio of the coal layer.
Description
Technical field
The invention relates to a kind of drilling equipment of coal-bed gas exploitation, relate in particular to a kind of spinning jet hole device.
Background technology
The exploitation of coal bed gas is to carry out digging in the mode of coal bed gas well, and what of gas production have direct relation with the aerogenesis area.Existing digging mode is a digging coal bed gas after the drilling well, and the aerogenesis area only is the well bore circumferential area.For increasing the aerogenesis area; need perforate on the coal bed gas well sleeve pipe (claiming again to window); the stratum is sprayed by the shower nozzle that is connected with coiled tubing with water under high pressure or mulling liquid (can be the abrasive material of flour sand, quartz sand, haydite or other kinds) then; form the perforation diameter of the certain diameter and the degree of depth; realize the coal seam stress release, improve gas permeability of coal seam and gas recovery ratio.
At present, jet hole mainly contains following mode: (1) hydraulic perforating: the window place of windowing that the shower nozzle that is connected with aboveground pump truck by coiled tubing is fixed on sleeve pipe, pump truck pumping highly pressurised liquid is through the nozzle ejection of shower nozzle, utilize the hydraulic drilling effect of high-pressure spray, form certain aperture at the outside of sleeve fractured rock or in the coal seam; But nozzle can not move radially extension in the down-hole in this hydraulic perforating mode, and the eyelet radial distance that ejects is short, and the duct size shape is irregular, does not reach the purpose that increases production and improves productivity of expection behind the jet hole.(2) waterpower deep penetrating perforating: at first the mechanical system that is driven with fluid power by punching control valve control punch mechanism pierces through the passage that sleeve pipe forms the jet pipe turnover, and then spray feeding system by injection control valve control and will radially send into the stratum with the flexible jet pipe of nozzle along this passage, the stratum is bored in high-speed jet by the nozzle ejection, this flexible jet pipe sprays while send to, forms the radial level hole of certain pore size, certain depth; This mode jet perforating success rate height, perforating depth and aperture all increase, and still, this mode is mainly used in the perforation of low hole, hypotonic, low abundance oil and gas reservoir at present.In addition, above-mentioned two kinds of jet hole modes all are to utilize the broken rock effect of high-pressure water jet and accurate hydrostatic pressure to hole by shower nozzle or jet pipe inject high pressure liquid, and therefore, drilling efficiency is lower, and the aperture is second-rate.
In view of this, the inventor relies on relevant design and manufacturing experience for many years, proposes a kind of spinning jet hole device, to overcome the defective of prior art.
Summary of the invention
The object of the present invention is to provide a kind of spinning jet hole device, this device can improve drilling efficiency and aperture quality, by cutting boring and jet perforating double action, on the coal seam, form the preforation tunnel release band of the certain diameter and the degree of depth, realize the coal seam stress release, increase pit shaft and coal seam contact area, effectively increase the coal bed gas well production capacity, improve the coal bed gas recovery ratio.
The object of the present invention is achieved like this, a kind of spinning jet hole device, and described spinning jet hole device comprises a cylinder shell, this housing rear end is provided with a tubular junction; In this housing a rotary body can be set rotationally, the external diameter of this rotary body is corresponding with the internal diameter of housing, and it is axially arranged with a cylindric extension front end edge of this rotary body, and a housing front end and an axial affixed shower nozzle are stretched out in this extension; The outer peripheral face of described rotary body is provided with many spiral helicine grooves, and rotary body is provided with the through hole of axial perforation; Be provided with in the described shower nozzle by after the blind hole that is provided with forward, the through hole conducting of described blind hole and rotary body; The front end surface of described shower nozzle is provided with the spray-hole that a plurality of and described blind hole is communicated with; Also be fixed with cutter on the front end surface of shower nozzle.
In a better embodiment of the present invention, the rear end of described rotary body and housing rear inside form an accommodation space.
In a better embodiment of the present invention, be provided with bearing between the extension outer peripheral face of described rotary body and the inner walls.
In a better embodiment of the present invention, inner walls is fixed in by a bearing support in the outer ring of described bearing.
In a better embodiment of the present invention, the rear end of described bearing support is provided with the seal stopper ring between extension outer peripheral face and inner walls.
In a better embodiment of the present invention, on the housing sidewall between described seal stopper ring and the rotary body front end, circumferentially be provided with a plurality of open-works.
In a better embodiment of the present invention, described bearing is the bearing that has sealing ring.
In a better embodiment of the present invention, described housing front end is provided with housing end plug.
From the above mentioned, after highly pressurised liquid was transported to described accommodation space by above-mentioned high-pressure hose, a part of highly pressurised liquid entered into the blind hole of shower nozzle by described through hole, was penetrated by a plurality of spray-holes that are communicated with blind hole again; Another part highly pressurised liquid enters into described many spiral helicine grooves, and the power conversion of this part highly pressurised liquid becomes torque output, drive rotary body and rotate, and then the shower nozzle of the band cutter that joins of drive and rotary body is rotated.So, when utilizing above-mentioned spinning jet hole device to be holed in the coal seam, this device can improve drilling efficiency and aperture quality, by cutting boring and jet perforating double action, on the coal seam, form the preforation tunnel release band of the certain diameter and the degree of depth, realize the coal seam stress release, increase pit shaft and coal seam contact area, effectively increase the coal bed gas well production capacity, improve the coal bed gas recovery ratio.
Description of drawings
The following drawings only is intended to the present invention done and schematically illustrates and explain, not delimit the scope of the invention.Wherein,
Fig. 1: be the structural representation of spinning jet hole device of the present invention.
Fig. 2: be the structural representation of rotary body among the present invention.
Fig. 3: be the structural representation of band cutter shower nozzle among the present invention.
Fig. 4: carry out the schematic diagram of horizontal well jet hole for utilizing spinning jet hole device of the present invention.
Fig. 5: carry out the schematic diagram of Vertical Well jet hole for utilizing spinning jet hole device of the present invention.
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast description of drawings the specific embodiment of the present invention.
As Fig. 1, Fig. 2, shown in Figure 3, the invention provides a kind of spinning jet hole device 100, described spinning jet hole device 100 comprises a cylinder shell 1, and this housing 1 rear end is provided with a tubular junction 11, in order to be connected in the high-pressure hose in the jet hole tool string; In this housing 1 rotary body 2 can be set rotationally, the internal diameter of the external diameter of this rotary body 2 and housing 1 is identical (to be formed movingly, rotary body 2 is freely rotated) in housing 1, it is axially arranged with a cylindric extension 21 front end edge of this rotary body 2, and housing 1 front end and an axial affixed shower nozzle 3 are stretched out in this extension 21; The outer peripheral face of described rotary body 2 is provided with many spiral helicine grooves 22, and rotary body 2 is provided with the through hole 23 of axial perforation; Be provided with in the described shower nozzle 3 by after the blind hole 31 that is provided with forward, through hole 23 conductings of described blind hole 31 and rotary body 2; The front end surface of described shower nozzle 3 is provided with the spray-hole 32 that a plurality of and described blind hole 31 is communicated with; Also be fixed with cutter 33 on the front end surface of shower nozzle 3, described cutter 33 can be embedded on the shower nozzle, also can be welded on the shower nozzle; In the present embodiment, the rear end of described rotary body 2 and housing 1 rear inside form an accommodation space 12.
After highly pressurised liquid was transported to described accommodation space 12 by above-mentioned high-pressure hose, a part of highly pressurised liquid entered into the blind hole 31 of shower nozzle 3 by described through hole 23, was penetrated by a plurality of spray-holes 32 that are communicated with blind hole 31 again; Another part highly pressurised liquid enters into described many spiral helicine grooves 22, and the power conversion of this part highly pressurised liquid becomes torque output, drive rotary body and rotate, and then the shower nozzle of the band cutter that joins of drive and rotary body is rotated.So, when utilizing above-mentioned spinning jet hole device to be holed in the coal seam, this device can improve drilling efficiency and aperture quality, by cutting boring and jet perforating double action, on the coal seam, form the preforation tunnel release band of the certain diameter and the degree of depth, realize the coal seam stress release, increase pit shaft and coal seam contact area, effectively increase the coal bed gas well production capacity, improve the coal bed gas recovery ratio.
Further, as shown in Figure 1, in the present embodiment, for fear of rotary body and the issuable friction of inner walls, thereby improve the life-span of rotary body, be provided with bearing 4 between the extension of described rotary body 2 21 outer peripheral faces and housing 1 inwall, described bearing 4 is for having the bearing of sealing ring.
The outer ring of described bearing 4 is fixed on housing 1 inwall by a bearing support 41; The rear end of described bearing support 41 is provided with the seal stopper ring 411 between extension 21 outer peripheral faces and housing 1 inwall, can prevent that the liquid that flows through many spiral grooves 22 from entering in the bearing 4, thereby influences the normal use of bearing; Further, in the present embodiment, circumferentially be provided with a plurality of open-works 13 on housing 1 sidewall between described seal stopper ring 411 and rotary body 2 front ends, the liquid that flows through many spiral grooves 22 can be discharged housing by described a plurality of open-works 13.
In order to prevent that other foreign matter from entering in the housing, thereby influence bearing and rotary body rotates, in the present embodiment, described housing 1 front end is provided with housing end plug 14.
As Fig. 4, shown in Figure 5, carry out horizontal well jet hole and the schematic diagram that carries out the Vertical Well jet hole for utilizing spinning jet hole device of the present invention.Use the instrument of windowing on sleeve pipe 5, to offer a plurality of windows 51 before the boring earlier,, determine the position of jet hole, carry out the jet perforating on ground and prepare according to the degree of depth and the inclination angle of the window on the sleeve pipe 5 apart from ground; Then the jet hole tool string is sent in the sleeve pipe 5, described jet hole tool string is made up of coiled tubing 6, high-pressure hose 7 and spinning jet hole device 100, spinning jet hole device 100 is delivered to assigned address, under the guiding of taking device, reach window 51 places, adjust operating angle, promptly enter the sidetracking eject position; By the pressure of control ground pump truck highly pressurised liquid (water under high pressure) is pumped to the spinning jet hole device 100 of down-hole again, the shower nozzle of band cutter is rotated cutting and hydraulic perforation, by cutting boring and jet perforating double action, on the coal seam, form the preforation tunnel release band 8 of the certain diameter and the degree of depth, until finishing jet hole; Reclaim coiled tubing 6, high-pressure hose 7 and spinning jet hole device 100 at last to sleeve pipe 5, carry out next step operation.
An instantiation of using spinning jet hole device jet hole release exploiting coal bed methane of the present invention is provided below, further specifies so that the effect of this device is made.
Behind the casing sidetracking, use
Coiled tubing, the high-pressure hose of external diameter 28mm and the spinning jet hole device of external diameter 40mm of inch carry out the jet hole release, eight the jetting release eyelets of constructing altogether, accumulative total jet hole drilling depth 1450m; Use this spinning jet hole device, improved gas production efficient, QN01 well continuously row was adopted 18 months, and the coal bed gas recovery ratio reaches 40%, with the ton coal air content in the single well-controlled scope by initial 13.0m
3/ t reduces to 7.8m
3/ t, (promptly a ton coal air content is lower than 8.0m to have reached the air content requirement that realizes the safe coal exploitation
3/ t).
Oneself is applied to five mouthfuls of coal bed gas horizontal well side direction jetting borings this equipment, since this equipment of self-application, has improved the efficient and the aperture quality of abrasive perforating, has promoted the coal bed gas well production capacity effectively to discharge, and the average gas production of individual well improves 28%.
The above only is the schematic specific embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification all should belong to the scope of protection of the invention.
Claims (8)
1. spinning jet hole device, it is characterized in that: described spinning jet hole device comprises a cylinder shell, and this housing rear end is provided with a tubular junction; In this housing a rotary body can be set rotationally, the external diameter of this rotary body is corresponding with the internal diameter of housing, and it is axially arranged with a cylindric extension front end edge of this rotary body, and a housing front end and an axial affixed shower nozzle are stretched out in this extension; The outer peripheral face of described rotary body is provided with many spiral helicine grooves, and rotary body is provided with the through hole of axial perforation; Be provided with in the described shower nozzle by after the blind hole that is provided with forward, the through hole conducting of described blind hole and rotary body; The front end surface of described shower nozzle is provided with the spray-hole that a plurality of and described blind hole is communicated with; Also be fixed with cutter on the front end surface of shower nozzle.
2. spinning jet hole device as claimed in claim 1 is characterized in that: the rear end of described rotary body and housing rear inside form an accommodation space.
3. spinning jet hole device as claimed in claim 1 is characterized in that: be provided with bearing between the extension outer peripheral face of described rotary body and the inner walls.
4. spinning jet hole device as claimed in claim 3, it is characterized in that: inner walls is fixed in by a bearing support in the outer ring of described bearing.
5. spinning jet hole device as claimed in claim 4, it is characterized in that: the rear end of described bearing support is provided with the seal stopper ring between extension outer peripheral face and inner walls.
6. spinning jet hole device as claimed in claim 5 is characterized in that: circumferentially be provided with a plurality of open-works on the housing sidewall between described seal stopper ring and the rotary body front end.
7. as claim 3 or 5 described spinning jet hole devices, it is characterized in that: described bearing is the bearing that has sealing ring.
8. spinning jet hole device as claimed in claim 1 is characterized in that: described housing front end is provided with housing end plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555717A CN102031931B (en) | 2010-11-23 | 2010-11-23 | Self-rotating jet drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555717A CN102031931B (en) | 2010-11-23 | 2010-11-23 | Self-rotating jet drilling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102031931A true CN102031931A (en) | 2011-04-27 |
| CN102031931B CN102031931B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010555717A Active CN102031931B (en) | 2010-11-23 | 2010-11-23 | Self-rotating jet drilling device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989277A (en) * | 2015-07-22 | 2015-10-21 | 成都来宝石油设备有限公司 | Spray nozzle for improving target oil reservoir pore permeability parameter |
| CN104989333A (en) * | 2015-06-17 | 2015-10-21 | 成都高普石油工程技术有限公司 | Novel spray head structure for improving oil well yield |
| CN105422016A (en) * | 2015-12-25 | 2016-03-23 | 辽宁工程技术大学 | Borehole cleaning system and cleaning method |
| CN105507867A (en) * | 2014-09-24 | 2016-04-20 | 中国石油化工股份有限公司 | Apparatus and method for producing borehole fissures |
| CN106894764A (en) * | 2015-12-18 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of drill bit |
| CN106894794A (en) * | 2015-12-21 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of device for forming runner in the earth formation |
| CN110359855A (en) * | 2019-07-11 | 2019-10-22 | 中煤科工集团西安研究院有限公司 | Spinning flow jet flow drill spray head with anti-stall device |
| WO2020103393A1 (en) * | 2018-11-21 | 2020-05-28 | 重庆地质矿产研究院 | Bottom sealing type pulse hydraulic fracturing tool of coiled tubing dragging belt and method |
| CN113153156A (en) * | 2021-05-21 | 2021-07-23 | 河南理工大学 | Hydraulic combined mechanical hole repairing device and method |
| CN113653478A (en) * | 2021-09-10 | 2021-11-16 | 中国石油大学(北京) | Perforating device, testing system and testing method for hydraulic fracturing simulation experiment |
| CN114482941A (en) * | 2022-01-20 | 2022-05-13 | 中煤科工集团西安研究院有限公司 | Angle-controllable directional perforation and lancing integrated device and application method |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507867A (en) * | 2014-09-24 | 2016-04-20 | 中国石油化工股份有限公司 | Apparatus and method for producing borehole fissures |
| CN105507867B (en) * | 2014-09-24 | 2018-07-13 | 中国石油化工股份有限公司 | A kind of device and method for generating wellbore crack |
| CN104989333A (en) * | 2015-06-17 | 2015-10-21 | 成都高普石油工程技术有限公司 | Novel spray head structure for improving oil well yield |
| CN104989277A (en) * | 2015-07-22 | 2015-10-21 | 成都来宝石油设备有限公司 | Spray nozzle for improving target oil reservoir pore permeability parameter |
| CN106894764A (en) * | 2015-12-18 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of drill bit |
| CN106894764B (en) * | 2015-12-18 | 2019-01-01 | 中国石油化工股份有限公司 | A kind of drill bit |
| CN106894794A (en) * | 2015-12-21 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of device for forming runner in the earth formation |
| CN105422016A (en) * | 2015-12-25 | 2016-03-23 | 辽宁工程技术大学 | Borehole cleaning system and cleaning method |
| US11098566B2 (en) | 2018-11-21 | 2021-08-24 | Chongqing Institute Of Geology And Mineral Resources | Pulse hydraulic fracturing tool and method for coiled tubing dragging with bottom packer |
| WO2020103393A1 (en) * | 2018-11-21 | 2020-05-28 | 重庆地质矿产研究院 | Bottom sealing type pulse hydraulic fracturing tool of coiled tubing dragging belt and method |
| CN110359855B (en) * | 2019-07-11 | 2021-01-19 | 中煤科工集团西安研究院有限公司 | Nozzle with anti-stall device for self-rotating jet drill bit |
| CN110359855A (en) * | 2019-07-11 | 2019-10-22 | 中煤科工集团西安研究院有限公司 | Spinning flow jet flow drill spray head with anti-stall device |
| CN113153156A (en) * | 2021-05-21 | 2021-07-23 | 河南理工大学 | Hydraulic combined mechanical hole repairing device and method |
| CN113653478A (en) * | 2021-09-10 | 2021-11-16 | 中国石油大学(北京) | Perforating device, testing system and testing method for hydraulic fracturing simulation experiment |
| CN114482941A (en) * | 2022-01-20 | 2022-05-13 | 中煤科工集团西安研究院有限公司 | Angle-controllable directional perforation and lancing integrated device and application method |
| CN114482941B (en) * | 2022-01-20 | 2024-02-27 | 中煤科工集团西安研究院有限公司 | Angle-controllable directional perforation and lancing integrated device and application method |
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Effective date of registration: 20190212 Address after: 030600 No. 1101, Block B, Shanxi Business International, Yingbin West Road, Jinzhong City, Shanxi Province Patentee after: Shanxi Shangdao Industrial Co., Ltd. Address before: Room 1101, International Building, No. 1 Zhichun Road, Haidian District, Beijing Patentee before: Beijing Zhongkuang Ruijie Technology Co., Ltd. |
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