CN103806935B - A kind of solid hole and outburst prevention device - Google Patents
A kind of solid hole and outburst prevention device Download PDFInfo
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- CN103806935B CN103806935B CN201410073421.7A CN201410073421A CN103806935B CN 103806935 B CN103806935 B CN 103806935B CN 201410073421 A CN201410073421 A CN 201410073421A CN 103806935 B CN103806935 B CN 103806935B
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Abstract
The present invention relates to a kind of solid hole and outburst prevention device, especially relate to a kind of quick hole and the outburst prevention device admittedly that are applicable to soft projecting coal bed drilling well.Comprise: special orifice tube, protrusion-dispelling device for filling oil, solid pipe device for filling oil, wherein: drilling well drilling bar is provided with an expandable protrusion-dispelling blister cavities through the outer wall of the part of special orifice tube, and described protrusion-dispelling blister cavities communicates with protrusion-dispelling device for filling oil; The outer wall cover of special orifice tube has an expandable solid pipe blister cavities, and described solid pipe blister cavities communicates with solid pipe device for filling oil.Therefore, tool of the present invention has the following advantages: 1. structure is simple, and equipment is easy to process; 2. easy and simple to handle, eliminate once hole technique admittedly; 3. protrusion-dispelling vibrational power flow is in hole, decreases the quantity and weight of orifice devices, is beneficial to down-hole resettlement; 4. good seal performance, effectively can prevent Gas aperture in hole.
Description
Technical field
The present invention relates to a kind of solid hole and outburst prevention device, especially relate to a kind of quick hole and the outburst prevention device admittedly that are applicable to soft projecting coal bed drilling well.
Background technology
In soft projecting coal bed underground mining process, coal and gas prominent accident happens occasionally, and each mining area is increasingly strict with improvement to the supervision of gas burst accident.The basic method of soft projecting coal bed gas control is this coal bed drilling gas pumping.In order to prevent hole wall collapse and Gas Outburst, when constructing, under first in drilling well, entering common orifice tube, after the solid pipe of once grouting, increasing mechanical type outburst prevention device in orifice tube front end.When the operating principle of this outburst prevention device is Gas Outburst in hole, utilizes the annular clearance of mechanical device between aperture blocking drilling rod and orifice tube, prevent gas leakage.But there are following three problems in existing solution:
First, the engineering time is long.Gas pumping hole construction period and lower man-hole opening Guan Shixu wait solid tube material and solidify, and extend drilling cycle on the whole.In addition, in drilling process, remove and orifice tube generation also can be made to loosen with rotary drilling bits, be the gas pumping effect ensureing the later stage, after pore-forming, often need secondary grouting admittedly to manage.
Secondly, existing apparatus poor sealing performance.Mechanical protrusion-dispelling belongs to rigid seal, and impossible closed-loop empty gap completely, sealing is relatively poor.
Finally, existing apparatus equipment is complicated.Outburst prevention device needs to be arranged on orifice tube, not only increases the weight of orifice tube front end, and the number of devices in aperture is increased, and makes troubles to site operation.
Summary of the invention
The present invention mainly solves the problems such as engineering time length, poor sealing performance and construction equipment complexity existing for prior art, and provide a kind of quick hole and the outburst prevention device admittedly that are applicable to soft projecting coal bed drilling well, its structure is simple, easy to use; Engineering time is short, can repeatedly utilize; Good seal performance, effectively can prevent Gas aperture in hole.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of solid hole and outburst prevention device, comprise: special orifice tube, protrusion-dispelling device for filling oil, solid pipe device for filling oil, wherein: drilling well drilling bar is provided with an expandable protrusion-dispelling blister cavities through the outer wall of the part of special orifice tube, and described protrusion-dispelling blister cavities communicates with protrusion-dispelling device for filling oil; The outer wall cover of special orifice tube has an expandable solid pipe blister cavities, and described solid pipe blister cavities communicates with solid pipe device for filling oil.
Optimize, in the solid hole of above-mentioned one and outburst prevention device, described special orifice tube comprises stationary pipes and lays respectively at Flange joint dish and the taper protrusion-dispelling pipe at stationary pipes two ends, and described protrusion-dispelling blister cavities is positioned at taper protrusion-dispelling pipe.
Optimize, in the solid hole of above-mentioned one and outburst prevention device, described solid pipe blister cavities is provided with the oil-filled mouth of solid pipe blister cavities that some and solid pipe device for filling oil communicates.
Optimize, in the solid hole of above-mentioned one and outburst prevention device, described protrusion-dispelling blister cavities is provided with some oil-filled mouths of protrusion-dispelling blister cavities communicated with protrusion-dispelling device for filling oil.
Optimize, in the solid hole of above-mentioned one and outburst prevention device, the some Constrained grooves of described taper protrusion-dispelling Guan Shangshe, the oil-filled mouth of described protrusion-dispelling blister cavities is fixed on protrusion-dispelling pipe through after restraint slot.
Optimize, in the solid hole of above-mentioned one and outburst prevention device, the oil-filled mouth outside of described protrusion-dispelling blister cavities is provided with external screw thread, and it is fixed on protrusion-dispelling pipe by constraint nut through after restraint slot.
Optimize, in the solid hole of above-mentioned one and outburst prevention device, the quantity of described restraint slot is 2 times of the oil-filled unrounded number of described protrusion-dispelling blister cavities.
Optimize, in above-mentioned solid hole and outburst prevention device, described protrusion-dispelling blister cavities is pyramidal structure, and can move axially along the axle center of taper protrusion-dispelling pipe.
Optimize, in above-mentioned solid hole and outburst prevention device, described protrusion-dispelling device for filling oil comprises one way valve, accumulator, the oil-filled stop valve of protrusion-dispelling of being connected successively by high-pressure rubber pipe.
Optimize, in above-mentioned solid hole and outburst prevention device, described solid pipe device for filling oil comprises the oil-filled stop valve of solid pipe, and connects the high-pressure rubber pipe of admittedly managing oil-filled stop valve and the solid oil-filled mouth of pipe blister cavities.
Therefore, tool of the present invention has the following advantages: 1. structure is simple, and device is easy to process; 2. easy and simple to handle, eliminate once hole technique admittedly; 3. protrusion-dispelling vibrational power flow is in hole, decreases the quantity and weight of orifice devices, is beneficial to down-hole resettlement; 4. good seal performance, effectively can prevent Gas aperture in hole.
Accompanying drawing explanation
Accompanying drawing 1 is schematic diagram of the present invention.
Accompanying drawing 2 is special orifice tube schematic diagrames of the present invention.
Accompanying drawing 3 is the oil-filled rear 3 d effect graphs of solid pipe blister cavities.
Accompanying drawing 4 is the oil-filled rear 3 d effect graphs of protrusion-dispelling blister cavities.
Accompanying drawing 5 is protrusion-dispelling device for filling oil schematic diagrames.
Accompanying drawing 6 is solid pipe device for filling oil schematic diagrames.
Accompanying drawing 7 is working state schematic representations of the present invention.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.In figure, Flange joint dish 1, stationary pipes 2, protrusion-dispelling pipe 3, restraint slot 4, drilling rod 5, solid pipe blister cavities 6, the solid oil-filled mouth of pipe blister cavities 7, protrusion-dispelling blister cavities 8, the oil-filled mouth of protrusion-dispelling blister cavities 9, constraint nut 10, hole wall 11, one way valve 12, accumulator 13, stop valve 14, stop valve 15, high-pressure rubber pipe 16, special orifice tube 17, protrusion-dispelling device for filling oil 18, solid pipe device for filling oil 19.
Embodiment:
The solid hole of one as shown in Figures 1 to 7 and outburst prevention device, comprise: special orifice tube 17, protrusion-dispelling device for filling oil 18, solid pipe device for filling oil 19, outer wall through the part of special orifice tube 17 of drilling well drilling bar 5 is provided with an expandable protrusion-dispelling blister cavities 8, and this protrusion-dispelling blister cavities 8 communicates with protrusion-dispelling device for filling oil 18; On the outer wall of special orifice tube 17, cover has an expandable solid pipe blister cavities 6, and described solid pipe blister cavities 6 communicates with solid pipe device for filling oil 19.
Special orifice tube 17 comprises stationary pipes 2 and lays respectively at Flange joint dish 1 and the taper protrusion-dispelling pipe 3 at stationary pipes 2 two ends, and protrusion-dispelling blister cavities 8 is positioned at this taper protrusion-dispelling pipe 3; Gu pipe blister cavities 6 is provided with the oil-filled mouth 7 of solid pipe blister cavities that some and solid pipe device for filling oil 19 communicates; Protrusion-dispelling blister cavities 8 is provided with the oil-filled mouth 9 of some protrusion-dispelling blister cavities be connected with protrusion-dispelling device for filling oil 18; Taper protrusion-dispelling pipe 3 is provided with some restraint slot 4, and the oil-filled mouth 9 of protrusion-dispelling blister cavities is fixed on protrusion-dispelling pipe 3 through after restraint slot 4.
External screw thread is provided with, when it is fixed on protrusion-dispelling pipe 3 by constraint nut 10 through after restraint slot 4 in protrusion-dispelling blister cavities oil-filled mouth 9 outside.Wherein, the quantity of restraint slot 4 is 2 times of protrusion-dispelling blister cavities oil-filled mouth 9 quantity.Protrusion-dispelling blister cavities 8 is pyramidal structure, and can move axially along the axle center of taper protrusion-dispelling pipe 3.
Protrusion-dispelling device for filling oil 18 comprises one way valve 12, accumulator 13, the oil-filled stop valve 14 of protrusion-dispelling of being connected successively by high-pressure rubber pipe 16.
Gu pipe device for filling oil 17 comprises the oil-filled stop valve 15 of solid pipe, and connect the high-pressure rubber pipe 16 of admittedly managing oil-filled stop valve 15 and the solid oil-filled mouth 7 of pipe blister cavities.
During assembling, by the restraint slot 4 of not oil-filled protrusion-dispelling blister cavities 8 passing with the oil-filled mouth 9 of externally threaded protrusion-dispelling blister cavities on protrusion-dispelling pipe 3, fix with constraint nut 10, then protrusion-dispelling device for filling oil 18 is accessed rig pumping plant oil-out, composition protrusion-dispelling oil circuit.Wherein, be with the oil-filled mouth 9 of externally threaded protrusion-dispelling blister cavities can only stay one to connect protrusion-dispelling device for filling oil 18, all the other block.
Not oil-filled solid pipe blister cavities 6 is placed in stationary pipes 2 through after Flange joint dish 1, solid pipe device for filling oil 19 and the solid oil-filled mouth 7 of pipe blister cavities is connected, then solid pipe device for filling oil 19 is accessed rig pumping plant oil-out, the solid pipe oil circuit of composition.Wherein, Gu the oil-filled mouth 7 of pipe blister cavities can only stay one to connect solid pipe blister cavities device for filling oil 19, all the other block.
By in hand-hole under the device that assembles, open the oil-filled stop valve 15 of solid pipe, close the oil-filled stop valve 14 of protrusion-dispelling.Start rig, rig pumping plant automatically to solid pipe blister cavities 6 and accumulator 13 oil-filled.Treat that solid pipe blister cavities 6 is full of oil, fill up the space between special orifice tube 17 and hole wall 11, close stop valve 14, the pressure after solid pipe blister cavities 6 is oil-filled makes special orifice tube 17 and hole wall 11 close contact and geo-stationary.When accumulator 13 is oil-filled, be in dynamic equilibrium, when rig stops, rig pumping plant fuel cut-off, the hydraulic oil in accumulator 13 is closed by the oil-filled stop valve 14 of protrusion-dispelling of one way valve 12 and closedown.
When normally creeping into, Gu pipe blister cavities 6 is oil-filled, make special orifice tube 17 and hole wall 11 geo-stationary.Flange joint dish 1 on special orifice tube 17 and the grading structure of protrusion-dispelling pipe 3 can in the movements axially limiting solid pipe blister cavities 6 further.When drilling rod 5 turns round at a high speed, not oil-filled protrusion-dispelling blister cavities 8 is fixed in the grading structure of protrusion-dispelling pipe 3, avoids revolution wearing and tearing protrusion-dispelling blister cavities 6 at a high speed.
If there is Gas Outburst in hole, after aperture gas bearing capacity transfinites, meeting auto-breaking in tunnel, rig pumping plant cannot continue fuel feeding.Open the oil-filled stop valve 14 of protrusion-dispelling, accumulator 13 is oil-filled to protrusion-dispelling blister cavities 8, blocks the annular clearance between protrusion-dispelling pipe 3 and drilling rod 5, reaches protrusion-dispelling object.
If gas amount is large in hole, protrusion-dispelling blister cavities 8 can be promoted from inside to outside and move axially along the axle center of taper protrusion-dispelling pipe 3, be compressed the volume of protrusion-dispelling blister cavities 8 by the grading structure of protrusion-dispelling pipe 3 further, play better protrusion-dispelling effect.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the terms such as Flange joint dish 1, stationary pipes 2, protrusion-dispelling pipe 3, restraint slot 4, drilling rod 5, solid pipe blister cavities 6, the solid oil-filled mouth of pipe blister cavities 7, protrusion-dispelling blister cavities 8, the oil-filled mouth of protrusion-dispelling blister cavities 9, constraint nut 10, hole wall 11, one way valve 12, accumulator 13, stop valve 14, stop valve 15, high-pressure rubber pipe 16, special orifice tube 17, protrusion-dispelling device for filling oil 18, solid pipe device for filling oil 19 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (10)
1. solid hole and an outburst prevention device, comprising: special orifice tube (17), protrusion-dispelling device for filling oil (18), solid pipe device for filling oil (19), is characterized in that:
Drilling well drilling bar (5) is provided with an expandable protrusion-dispelling blister cavities (8) through the outer wall of the part of special orifice tube (17), and described protrusion-dispelling blister cavities (8) communicates with protrusion-dispelling device for filling oil (18);
The outer wall cover of special orifice tube (17) has an expandable solid pipe blister cavities (6), and described solid pipe blister cavities (6) communicates with solid pipe device for filling oil (19).
2. the solid hole of one according to claim 1 and outburst prevention device, it is characterized in that, described special orifice tube (17) comprises stationary pipes (2) and lays respectively at Flange joint dish (1) and the taper protrusion-dispelling pipe (3) at stationary pipes (2) two ends, and described protrusion-dispelling blister cavities (8) is positioned at taper protrusion-dispelling pipe (3).
3. the solid hole of one according to claim 2 and outburst prevention device, is characterized in that, described solid pipe blister cavities (6) is provided with the oil-filled mouth of the solid pipe blister cavities (7) that some and solid pipe device for filling oil (19) communicates.
4. the solid hole of one according to claim 2 and outburst prevention device, is characterized in that, described protrusion-dispelling blister cavities (8) is provided with some oil-filled mouths of protrusion-dispelling blister cavities (9) communicated with protrusion-dispelling device for filling oil (18).
5. the solid hole of one according to claim 4 and outburst prevention device, it is characterized in that, described taper protrusion-dispelling pipe (3) is provided with some restraint slot (4), and the oil-filled mouth of described protrusion-dispelling blister cavities (9) is fixed on protrusion-dispelling pipe (3) through after restraint slot (4).
6. the solid hole of one according to claim 5 and outburst prevention device, it is characterized in that, described protrusion-dispelling blister cavities oil-filled mouth (9) outside is provided with external screw thread, and it is fixed on protrusion-dispelling pipe (3) by constraint nut (10) afterwards through restraint slot (4).
7. the solid hole of one according to claim 5 and outburst prevention device, it is characterized in that, the quantity of described restraint slot (4) is 2 times of described protrusion-dispelling blister cavities oil-filled mouth (9) quantity.
8. the solid hole of one according to claim 5 and outburst prevention device, it is characterized in that, described protrusion-dispelling blister cavities (8) is pyramidal structure, and can move axially along the axle center of taper protrusion-dispelling pipe (3).
9. according to the solid hole of any one described in claim 1 to 8 and outburst prevention device, it is characterized in that, described protrusion-dispelling device for filling oil (18) comprises one way valve (12), accumulator (13), the oil-filled stop valve of protrusion-dispelling (14) of being connected successively by high-pressure rubber pipe (16).
10. according to the solid hole of any one described in claim 1 to 8 and outburst prevention device, it is characterized in that, described solid pipe device for filling oil (19) comprises the oil-filled stop valve of solid pipe (15) and connects the high-pressure rubber pipe (16) of admittedly managing oil-filled stop valve (15) and the solid oil-filled mouth of pipe blister cavities (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410073421.7A CN103806935B (en) | 2014-02-28 | 2014-02-28 | A kind of solid hole and outburst prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410073421.7A CN103806935B (en) | 2014-02-28 | 2014-02-28 | A kind of solid hole and outburst prevention device |
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| Publication Number | Publication Date |
|---|---|
| CN103806935A CN103806935A (en) | 2014-05-21 |
| CN103806935B true CN103806935B (en) | 2015-09-09 |
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| CN201410073421.7A Active CN103806935B (en) | 2014-02-28 | 2014-02-28 | A kind of solid hole and outburst prevention device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2406593B (en) * | 2003-10-03 | 2006-06-28 | Schlumberger Holdings | Well packer having an energized sealing element and associated method |
| JP4086832B2 (en) * | 2004-10-19 | 2008-05-14 | 株式会社ケー・エフ・シー | Packer and packing method |
| CN201218077Y (en) * | 2008-07-08 | 2009-04-08 | 中国石油天然气股份有限公司 | Air bag type self-sealing well sealer |
| CN201593393U (en) * | 2009-11-27 | 2010-09-29 | 中国石油集团长城钻探工程有限公司 | Automatic expansion type external pipe packer |
| CN102400658A (en) * | 2010-09-13 | 2012-04-04 | 昆山中慈工控科技开发有限公司 | Self-induction type intelligent electrically driven hydraulic capsule packer |
-
2014
- 2014-02-28 CN CN201410073421.7A patent/CN103806935B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2406593B (en) * | 2003-10-03 | 2006-06-28 | Schlumberger Holdings | Well packer having an energized sealing element and associated method |
| JP4086832B2 (en) * | 2004-10-19 | 2008-05-14 | 株式会社ケー・エフ・シー | Packer and packing method |
| CN201218077Y (en) * | 2008-07-08 | 2009-04-08 | 中国石油天然气股份有限公司 | Air bag type self-sealing well sealer |
| CN201593393U (en) * | 2009-11-27 | 2010-09-29 | 中国石油集团长城钻探工程有限公司 | Automatic expansion type external pipe packer |
| CN102400658A (en) * | 2010-09-13 | 2012-04-04 | 昆山中慈工控科技开发有限公司 | Self-induction type intelligent electrically driven hydraulic capsule packer |
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| CN103806935A (en) | 2014-05-21 |
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