CN103939074B - A kind of drilling rod orienting expansion coal seam crackle scale and using method thereof - Google Patents

A kind of drilling rod orienting expansion coal seam crackle scale and using method thereof Download PDF

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Publication number
CN103939074B
CN103939074B CN201410120394.4A CN201410120394A CN103939074B CN 103939074 B CN103939074 B CN 103939074B CN 201410120394 A CN201410120394 A CN 201410120394A CN 103939074 B CN103939074 B CN 103939074B
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China
Prior art keywords
drilling rod
water filling
seam
coal seam
sleeve
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CN201410120394.4A
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Chinese (zh)
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CN103939074A (en
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王有熙
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LOGISTICS COLLEGE OF CHINESE ARMED POLICE FORCE
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LOGISTICS COLLEGE OF CHINESE ARMED POLICE FORCE
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Abstract

The invention discloses a kind of drilling rod and using method thereof orienting and expanding coal seam crackle scale, trocar sheath including hollow, it is provided with handle outside described outer sleeve bottom, described outer sleeve bottom is provided circumferentially about the first water filling seam, described trocar sheath top is provided with apopore, described trocar sheath is internally provided with inner sleeve, the top of described inner sleeve is provided with diverter, the second water filling seam it is provided with on described inner sleeve lower circumference, it is provided with valve between described first water filling seam and described second water filling seam, cracked by the coal seam after this drilling rod and using method fracturing thereof and extended by predetermined direction on a large scale, improve gas permeability of coal seam, reduce coal strength, improve production efficiency.

Description

A kind of drilling rod orienting expansion coal seam crackle scale and using method thereof
Technical field
The method that the present invention relates to the exploitation of colliery industry, a kind of orient expand coal seam crackle scale drilling rod and Using method.
Background technology
Colliery industry is the support industry of economic development, the most efficiently, safe and environment-friendly exploitation colliery be constantly research Technical problem.In view of rigid strong, the density height of coal seam rock mass, utilize hydrofracturing technology can reduce coal in recovery process The intensity of layer rock mass, enhancing gas permeability of coal seam.In prior art, by single borehole device, coal seam is carried out water filling and make its fracturing Weakening, cracked small scale in coal seam, direction is uncontrollable, it is impossible to make crackle extend by predetermined direction.At present, this skill It is uncontrollable that a difficult problem for art maximum is exactly the crack advance of the coal seam generation after fracturing, weak effect.
Summary of the invention
For prior art exists technical problem, the present invention provide a kind of orient expand coal seam crackle scale drilling rod and Its using method, is cracked by the coal seam after this drilling rod and using method fracturing thereof and is extended by predetermined direction on a large scale, Improve gas permeability of coal seam, reduce coal strength, improve production efficiency.
In order to solve to exist in prior art technical problem, the present invention adopts the following technical scheme that
A kind of drilling rod orienting expansion coal seam crackle scale, including the trocar sheath of hollow, sets outside described outer sleeve bottom Being equipped with handle, described outer sleeve bottom is provided circumferentially about the first water filling seam, and described trocar sheath top is provided with apopore, described Trocar sheath is internally provided with inner sleeve, and the top of described inner sleeve is provided with diverter, and described inner sleeve lower circumference is arranged There is the second water filling seam, between described first water filling seam and described second water filling seam, be provided with valve.
Angular range between described handle and described outer sleeve bottom transverse axis is 0~90 °.
Described first water filling is sewn on position and described second water filling on described trocar sheath circumference and is sewn on described inner sleeve circumference Upper position consistency.
The present invention can also use a kind of method of drilling rod using orientation to expand coal seam crackle scale, and its step is as follows:
First, treating that working seam work selects the position of prebored hole, and described drilling rod is being connected with rig, drill bit respectively Connect;
Second, use hole packer to block bottom drilling rod, and connect high-pressure water pipe;
3rd, the handle angle scope adjusted in described drilling rod makes up to pre-provisioning request;
4th, rotate angle and the predetermined angular one of handle in described second step that described drilling rod makes its first water filling stitch Cause;
5th, open the valve in described drilling rod, make first water filling seam with second water filling stitch overlap, by high-pressure water pipe to Water filling in described drilling rod;
6th, in described drilling rod, the water under high pressure in described 4th step is laterally shunted and sprays to coal from apopore by diverter Layer is internal, and coal seam is internally formed linear plane orientation water filling crack;
7th, after water filling crack reaches requirement in described 5th step, close the valve in described drilling rod, no longer pass through Described drilling rod water filling;Meanwhile, in boring, described drilling rod is extracted out;
8th, use hole packer again block described 6th step is holed, from the high-pressure water pipe 7 left to boring in Water filling, makes cracks in coal seam extend extension according to set direction, until whole coal seam crack depth reaches to exploit requirement.
In described third step, handle adjusts angular range at 0~90 °.
The method have the benefit that first, the Angle ambiguity high pressure water injection that the present invention opens by adjusting orientation handle enters The angular range of trocar sheath, and then control high pressure water injection flow, flow velocity.Second, the present invention controls the first note by changeover valve Water seam, second water filling seam overlap, every closing, meet quickly generate needs.3rd, the present invention will inject inner sleeve by diverter Water under high pressure is effectively split into lateral current and is injected into coal seam, can make to be formed in coal seam linear orientation water filling crack, produced by split Stricture of vagina area is big, the degree of depth strong, improves production efficiency, saves manpower.4th, present configuration is reasonable, it is ingenious to design, easy to operate, Be suitable to extensively apply.
Accompanying drawing explanation
Fig. 1 is that the present invention is a kind of orients the jackrod structure schematic diagram expanding coal seam crackle scale.
Fig. 2 is that the present invention is a kind of orients the drilling rod A-A profile expanding coal seam crackle scale.
Fig. 3 is to use a kind of drilling rod schematic diagram orienting expansion coal seam crackle scale of the present invention.
Reference:
1--trocar sheath 11--handle 12--the first water filling seam 13--apopore 14--iron hoop 2--inner sleeve
21--the second water filling seam 3--diverter 4--valve 5 hole packer 6 drill bit 7 high-pressure water pipe
Detailed description of the invention:
Below in conjunction with the accompanying drawings the present invention is described in detail:
Such as Fig. 1, shown in Fig. 2, the present invention provides a kind of drilling rod orienting and expanding coal seam crackle scale, including the overcoat of hollow Pipe 1, described trocar sheath 1 bottom outside is provided with handle 11, angle between transverse axis bottom described handle 11 and described trocar sheath 1 Scope is 0~90 °.Described handle 11 is inserted in outer sleeve bottom by iron hoop 14, and handle 11 is welded on the circumference of iron hoop 14, and one In the case of as, handle 11 is 1 or 2.In actual production, according to the hardness in coal seam, the angle adjusting handle 11 controls outwards The angular range of sleeve pipe 1 high pressure water injection, and then ensure water filling flow velocity, flow.It is provided with first on described trocar sheath 1 lower circumference Water filling seam 12, described trocar sheath top is provided with apopore 13, and described trocar sheath is internally provided with inner sleeve 2, described inner sleeve Top be provided with diverter 3, described inner sleeve 2 lower circumference is provided with second water filling seam 21, described first water filling seam 12 And being provided with valve 4 between described second water filling seam 21, described first water filling seam 12 is position and described the on trocar sheath 1 circumference Two water filling seam 21 position consistency on inner sleeve 2 circumference.So, when needs water filling, Open valve 4, first water filling seam 12 with Second water filling seam 21 coincidence, completes water filling.Closing valve 4, the first water filling seam 12 is spaced with the second water filling seam 21 the most simultaneously, nothing Method water filling.
As it is shown on figure 3, a kind of method of drilling rod using orientation to expand coal seam crackle scale, employing following steps: first, Treating that working seam work selects the position of prebored hole, and described drilling rod is being connected with rig, drill bit 6 respectively;Second, use envelope Hole device 5 blocks bottom the trocar sheath 1 of drilling rod, and connects high-pressure water pipe 7;3rd, adjust handle 11 angle in described drilling rod Scope makes up to pre-provisioning request;Generally handle 11 adjusts angular range at 0~90 °.4th, rotate described drilling rod make its first The angle of water filling seam 12 is consistent with the predetermined angular of handle 11 in described step 2;5th, open the valve 4 in described drilling rod, make First water filling seam 11 overlaps, by high-pressure water pipe 7 water filling in described drilling rod with the second water filling seam 21;6th, in described drilling rod Water under high pressure in step 4 is laterally shunted and sprays to coal seam from apopore 13 by diverter 3, and coal seam is internally formed linear plane Orientation water filling crack;7th, after water filling crack reaches requirement in step 5, close the valve 4 in described drilling rod, no longer pass through Described drilling rod water filling;Meanwhile, in boring, described drilling rod is extracted out;8th, use hole packer again to block step 6 is holed, From the high-pressure water pipe 7 left to water filling in boring, cracks in coal seam is made to extend extension according to set direction, until whole coal seam crackle The degree of depth reaches to exploit requirement.
Real work of the present invention uses process: first, selects pre-position of digging that drilling rod is put into precalculated position on coal seam After, according to practice of construction scene needs, adjusting the angular range of handle, handle is controlled angle at 30 ° by the present invention, now, from The water of high-voltage tube injection trocar sheath is 30 ° and enters in trocar sheaths.Subsequently, Open valve, make the first water filling seam and the second water filling seam Overlap.Then, open high-pressure hydraulic pump, pressurized after water promptly flow into inner sleeve from the first water filling seam and the second water filling seam Diverter, meanwhile, the water under high pressure headed into from bottom the most laterally is carried out separating being injected into coal through outlet by diverter Layer is internal, by the coal seam of high-voltage linear water flow jet, can form linear orientation water filling crack therein, thus reach orientation The purpose in hydrofracturing coal seam.
Above by reference to drawings and Examples, being schematically described the present invention, this description is the most restricted.This area Those of ordinary skill will be understood that in actual applications, in the present invention, the set-up mode of each parts is all it may happen that some changes Become, and other staff are likely to make similar Design under it enlightens.It is pointed out that the design ancestor without departing from this type Purport, all obvious changes and similar Design thereof, within being all contained in protection domain of the present utility model.

Claims (5)

1. orient the drilling rod expanding coal seam crackle scale, including the trocar sheath of hollow, it is characterised in that at the bottom of described trocar sheath Being provided with handle outside portion, described outer sleeve bottom is provided circumferentially about the first water filling seam, and described trocar sheath top is provided with out Water hole, described trocar sheath is internally provided with inner sleeve, and the top of described inner sleeve is provided with diverter, circle bottom described inner sleeve It is provided with the second water filling seam on week, between described first water filling seam and described second water filling seam, is provided with valve.
The most according to claim 1, orientation expands the drilling rod of coal seam crackle scale, it is characterised in that described handle with described outside Angular range between sleeve bottom transverse axis is 0~90 °.
The most according to claim 1, orientation expands the drilling rod of coal seam crackle scale, it is characterised in that described first water filling is sewn on On described trocar sheath circumference, position and described second water filling are sewn on position consistency on described inner sleeve circumference.
4. the method for the drilling rod using orientation as claimed in claim 1 to expand coal seam crackle scale:
First, treating that working seam work selects the position of prebored hole, and described drilling rod is being connected with rig, drill bit respectively;
Second, use hole packer to block bottom drilling rod, and connect high-pressure water pipe;
3rd, the handle angle scope adjusted in described drilling rod makes up to pre-provisioning request;
4th, rotate the angle that described drilling rod makes its first water filling stitch consistent with the predetermined angular of handle in described second step;
5th, open the valve in described drilling rod, make the first water filling seam overlap, by high-pressure water pipe to described with the second water filling seam Water filling in drilling rod;
6th, in described drilling rod, the water under high pressure in described 4th step is laterally shunted in apopore injection to coal seam by diverter Portion, coal seam is internally formed linear plane orientation water filling crack;
7th, after water filling crack reaches requirement in described 5th step, close the valve in described drilling rod, no longer by described Drilling rod water filling;Meanwhile, in boring, described drilling rod is extracted out;
8th, use hole packer again to block described 6th step is holed, from the high-pressure water pipe left to water filling in boring, Cracks in coal seam is made to extend extension according to set direction, until whole coal seam crack depth reaches to exploit requirement.
Orientation is used to expand the drilling rod method of coal seam crackle scale the most according to claim 4, it is characterised in that the described 3rd In step, handle adjusts angular range at 0~90 °.
CN201410120394.4A 2014-03-27 2014-03-27 A kind of drilling rod orienting expansion coal seam crackle scale and using method thereof Expired - Fee Related CN103939074B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089374A (en) * 1976-12-16 1978-05-16 In Situ Technology, Inc. Producing methane from coal in situ
SU1701896A1 (en) * 1989-02-01 1991-12-30 Криворожский горнорудный институт Method of improvement of permeability of rocks in place of their occurrence and equipment for its realization
CN102071921A (en) * 2010-12-30 2011-05-25 河南理工大学 Underground drilling and fracturing-integrated staged fracturing device and gas drainage process
CN103133028A (en) * 2013-03-12 2013-06-05 河南理工大学 Underground coal seam hydrofracture crack oriented developing method
CN103306657A (en) * 2013-06-28 2013-09-18 陕西煤业化工技术研究院有限责任公司 Coal-seam slotting pressure-relief anti-reflection and slit groove retaining device and method
CN203879393U (en) * 2014-03-27 2014-10-15 中国人民武装警察部队后勤学院 Drill pipe for directionally expanding coal bed crack scales

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089374A (en) * 1976-12-16 1978-05-16 In Situ Technology, Inc. Producing methane from coal in situ
SU1701896A1 (en) * 1989-02-01 1991-12-30 Криворожский горнорудный институт Method of improvement of permeability of rocks in place of their occurrence and equipment for its realization
CN102071921A (en) * 2010-12-30 2011-05-25 河南理工大学 Underground drilling and fracturing-integrated staged fracturing device and gas drainage process
CN103133028A (en) * 2013-03-12 2013-06-05 河南理工大学 Underground coal seam hydrofracture crack oriented developing method
CN103306657A (en) * 2013-06-28 2013-09-18 陕西煤业化工技术研究院有限责任公司 Coal-seam slotting pressure-relief anti-reflection and slit groove retaining device and method
CN203879393U (en) * 2014-03-27 2014-10-15 中国人民武装警察部队后勤学院 Drill pipe for directionally expanding coal bed crack scales

Non-Patent Citations (2)

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Title
《波兰煤矿坚硬顶板定向水力压裂技术》;孙守山等;《煤炭科学技术》;19990225;第27卷(第2期);第51-52页 *
《穿煤层钻孔定向水压致裂的数值仿真》;富向等;《东北大学学报(自然科学版)》;20111015;第32卷(第10期);第1481-1483页 *

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