CN203285405U - Multi-stage composite deep penetration perforating device - Google Patents
Multi-stage composite deep penetration perforating device Download PDFInfo
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- CN203285405U CN203285405U CN2013202027160U CN201320202716U CN203285405U CN 203285405 U CN203285405 U CN 203285405U CN 2013202027160 U CN2013202027160 U CN 2013202027160U CN 201320202716 U CN201320202716 U CN 201320202716U CN 203285405 U CN203285405 U CN 203285405U
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- detonating fuse
- pressure break
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- 239000002131 composite material Substances 0.000 title claims abstract description 70
- 230000035515 penetration Effects 0.000 title abstract description 4
- 239000000843 powder Substances 0.000 claims description 31
- 230000000149 penetrating effect Effects 0.000 claims description 26
- 230000007704 transition Effects 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 239000003721 gunpowder Substances 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000011148 porous material Substances 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- 238000005474 detonation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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Abstract
The utility model discloses a multistage compound perforation device that penetrates deeply, including at least one whole perforation unit, whole perforation is including fracturing gun subassembly (10) and compound perforator (20), and fracturing gun subassembly (10) are including from the top down fixed connection's cylindric top connection (1), cylindric fracturing gun body (2) and cylindric intermediate head (7) in proper order, and fracturing gun body (2) are equipped with fracturing grain (5), and the lateral wall of fracturing gun body (2) is equipped with a plurality of pressure release holes (22). When the perforation ejection hole in the composite perforator forms a pore channel, two-stage gunpowder is excited and combusted step by step, high-temperature and high-pressure gas is generated in a shaft and directly enters the perforation pore channel, the pressure action time is greatly prolonged by doing work for many times, and effective gas fracturing can be carried out on a thinner unconventional oil-gas layer, so that hole-seam-combined deep penetration is formed, and the flow conductivity of a near-wellbore area is improved.
Description
Technical field
The utility model relates to the petroleum exploration and development technical field, the especially a kind of deep penetrating perforating of multistage composite for horizontal well device.
Background technology
In recent years, shale gas, coal bed gas, tight gas, fine and close wet goods unconventional petroleum resources have become the major fields of Global Oil natural gas exploration and development, and general unconventional oil gas can't be developed with perforation, fracturing process and the technological means of routine., from developing at present the experience of shale gas abroad, mainly rely on horizontal well drilling and adopt large liquid measure multistage pressure break completion mode to develop this type of reservoir.The horizontal well majority is cased well, and all will adopt fracturing could obtain production capacity, and cased well could be implemented fracturing after must forming the passage that fracturing fluid enters stratum by perforation.The degree of perfection that forms seam net system after the fracturing operation has determined whether to obtain maximum drainage area in reservoir, and then obtains production capacity.
, for thinner oil-gas Layer, in thickness 20m, adopt above-mentioned segmentation fracturing often to be difficult to obtain the seam net system of evenly gathering at present, and very easily alter layer, thereby can not obtain desirable development effectiveness, and, for the exploitation of thin layer, adopt fracturing also very uneconomical.So, the problem of current existence is that exploitation is not easy to implement the well of fracturing for thin layer, implements can only produce limited wearing deeply after the conventional perforation operation near well,, for the extremely low shale gas of reservoir permeability, coal bed gas or fine and close oil-gas Layer, can't obtain production capacity.
The utility model content
Be not suitable for the technical problem of thinner oil-gas Layer exploitation in order to solve traditional fracturing and conventional perforation operation, the utility model provides a kind of multistage composite deep penetrating perforating device, this multistage composite deep penetrating perforating device combines horizontal well perforation and multistage gas fracturing technique, the final deep penetration that forms hole seam mating type in stratum, solved thinner oil-gas Layer and need not to implement the problem that fracturing just can directly be gone into operation.
the technical scheme that its technical problem that solves the utility model adopts is: a kind of multistage composite deep penetrating perforating device, comprise at least one whole perforation unit, the top of described whole perforation unit is the bear gun assembly, the bottom of described whole perforation unit is composite perforator, the bear gun assembly comprises the top connection of the tubular that is fixedly connected sequentially from the top down, the pressure break body of a gun of tubular and the transition joint of tubular, pressure break body of a gun inner sleeve is provided with central tube, be provided with the first through hole that connects vertically in central tube, the upper end of central tube be fixedly connected with top connection and the first through hole and top connection in the first detonating fuse channel connection is installed, the internal communication that the lower end of central tube is fixedly connected with transition joint and the first through hole is installed passage and composite perforator by the second detonating fuse that is arranged in transition joint, be provided with the pressure break powder column of tubular in the toroidal cavity that forms between the pressure break body of a gun and central tube, the sidewall of the pressure break body of a gun is provided with a plurality of relief holes, at the first detonating fuse, passage is installed, the first through hole and the second detonating fuse are installed in passage and are provided be used to the detonating fuse of lighting composite perforator and pressure break powder column.
The upper end of central tube is connected with top connection by union, is provided with the second through hole that connects vertically in union, and the second through hole is communicated with the first through hole, and the second through hole and the first detonating fuse are installed channel connection, are provided with described detonating fuse in the second through hole.
The upper end sealing of union is plugged in the first detonating fuse of top connection and installs in passage, and the sealing of the lower end of union is plugged in the first through hole of central tube.
Relief hole is through hole or step through-hole or the step through-hole that is provided with blanking cover.
Be arranged with respectively the centralizer body of annular outside the top and bottom of pressure break powder column, the internal diameter of centralizer body equals the external diameter of pressure break powder column, and the external diameter of centralizer body equals the internal diameter of the pressure break body of a gun.
Be provided with the upper end of connection top connection and the first pressure release passage of toroidal cavity in top connection; Be provided with the second pressure release passage of the inside that is communicated with toroidal cavity and described composite perforator in transition joint.
The lower end of top connection is provided with external screw thread, and the upper end of the pressure break body of a gun is provided with internal thread, and the lower end of the pressure break body of a gun is provided with internal thread, and the upper end of transition joint is provided with external screw thread.
Described detonating fuse comprises main detonating fuse and secondary detonating fuse, described main detonating fuse is installed in passage, the second through hole, the first through hole and the second detonating fuse installation passage along first detonating fuse that is axially disposed within of described whole perforation unit, and secondary detonating fuse can pass the third through-hole that is arranged on the central tube sidewall and connect pressure break powder column and described main detonating fuse.
Described multistage composite deep penetrating perforating device comprises three described whole perforation unit that connect successively from the top down, the composite perforator of superposed described whole perforation unit is fixedly connected with the top connection of the described whole perforation unit that is positioned at middle part, and the composite perforator that is positioned at the described whole perforation unit at middle part is fixedly connected with the top connection of the described whole perforation unit that is positioned at bottom.
The beneficial effects of the utility model are:
1. the pressure break powder column is arranged in the pressure break body of a gun, reduces in the process of going into the well the wearing and tearing of pressure break powder column have been improved the detonation safety;
2. bear gun has relief hole with it, and the energy that during detonation of pressure break powder column, the secondary gunpowder produces can discharge by relief hole fast, and energy enters stratum, extends the perforation crack;
3. the toroidal cavity in the pressure break body of a gun is communicated with by being arranged in pressure release passage and the composite perforator in top connection and transition joint, can be by pressure release passage fast to pressure release in composite perforator after detonation, keep composite perforator inside and outside differential pressure balance, can effectively prevent the composite perforator phenomenon that is crushed.
Description of drawings
Below in conjunction with accompanying drawing, multistage composite deep penetrating perforating device described in the utility model is elaborated.
Fig. 1 is the structural representation of whole perforation unit in multistage composite deep penetrating perforating device described in the utility model.
Fig. 2 is the structural representation of bear gun assembly in whole perforation unit.
Fig. 3 is the part decomposing schematic representation of bear gun assembly.
10. bear gun assemblies wherein, 1. top connection, 11. first detonating fuses are installed passages, 12. first pressure release passages, 2. the pressure break body of a gun, 21. toroidal cavities, 22. relief holes, 3. union, 31. the second through hole, 4. central tube, 41. first through holes, 42. third through-holes, 5. pressure break powder column, 6. centralizer body, 7. transition joint, 71. second detonating fuses are installed passages, 72. the second pressure release passage, 73. sleeves, 74. fourth holes, 75. bearing, 20. composite perforators, 30. lower contacts.
The specific embodiment
below in conjunction with accompanying drawing, multistage composite deep penetrating perforating device described in the utility model is elaborated, a kind of multistage composite deep penetrating perforating device, comprise at least one whole perforation unit, the top of described whole perforation unit is bear gun assembly 10, the bottom of described whole perforation unit is composite perforator 20, bear gun assembly 10 comprises the top connection 1 of the tubular that is fixedly connected sequentially from the top down, the pressure break body of a gun 2 of tubular and the transition joint 7 of tubular, be arranged with central tube 4 in the pressure break body of a gun 2, be provided with the first through hole 41 that connects vertically in central tube 4, the upper end of central tube 4 is fixedly connected with top connection 1 and the first through hole 41 is communicated with the first detonating fuse installation passage 11 in top connection 1, the internal communication that the lower end of central tube 4 is fixedly connected with transition joint 7 and the first through hole 41 is installed passage 71 and composite perforator 20 by the second detonating fuse that is arranged in transition joint 7, be provided with the pressure break powder column 5 of tubular in the toroidal cavity 21 that forms between the pressure break body of a gun 2 and central tube 4, the sidewall of the pressure break body of a gun 2 is provided with a plurality of relief holes 22, at the first detonating fuse, passage 11 is installed, the first through hole 41 and the second detonating fuse are installed in passage 71 and are provided be used to the detonating fuse of lighting composite perforator 20 and pressure break powder column 5, as Fig. 1, Fig. 2, shown in Figure 3.
Perforating bullet and one-level gunpowder are installed in commercially available composite perforator 20, and the pressure break powder column 5 of the bear gun assembly 10 interior installations adjacent with composite perforator 20 is the secondary gunpowder.multistage composite deep penetrating perforating device described in the utility model is when underground work, detonating fuse ignites vertically from the top down, composite perforator 20 and commercially available pressure break powder column 5 are detonated immediately, perforating bullet in composite perforator 20 is detonated the high-speed jet of rear generation, form perforation tunnel on stratum, during a large amount of high temperature and high pressure gas that meanwhile produce after the one-level gunpowder in composite perforator 20 and pressure break powder column 5 detonations in bear gun assembly 10 under high-temperature and high-pressure conditions are discharged into perforation tunnel along the jet orifice on composite perforator 20 body of a guies and the relief hole 22 on the pressure break body of a gun 2 respectively, continue to extend crack in stratum, thereby realize the stratum perforation, the pressure break connection is done.When in composite perforator 20, the lined-cavity charge perforation forms duct, the burning of two-stage gunpowder stepwise excitation, produce high temperature and high pressure gas and directly enter perforation tunnel in pit shaft, by repeatedly doing work and significantly extended the pressure-acting time, can carry out effective gas pressure break to thinner unconventional oil-gas Layer, thereby form the deep penetration of hole seam mating type, form fracture network widely near wellbore zone, increase substantially the flow conductivity of near wellbore zone.
The upper end of central tube 4 is connected with top connection 1 by union 3, be provided with the second through hole 31 that connects vertically in union 3, the second through hole 31 is communicated with the first through hole 41, and the second through hole 31 is installed passage 11 with the first detonating fuse and is communicated with, and is provided with described detonating fuse in the second through hole 31.The upper end sealing of union 3 is plugged in the first detonating fuse of top connection 1 and installs in passage 11, and the sealing of the lower end of union 3 is plugged in the first through hole 41 of central tube 4.By being set, can improve by union 3 reliability that the central tube 4 of this multistage composite deep penetrating perforating device is connected with top connection 1.
Pressure break powder column 5 is arranged in the pressure break body of a gun 2, reduces in the process of going into the well the wearing and tearing to powder column, improves the detonation safety.In order in central tube 4 outsides, pressure break powder column 5 to be installed better, be arranged with respectively the centralizer body 6 of annular outside the top and bottom of pressure break powder column 5, the internal diameter of centralizer body 6 equals the external diameter of pressure break powder column 5, the external diameter of centralizer body 6 equals the internal diameter of the pressure break body of a gun 2, and namely righting is carried out by centralizer body 6 in the top and bottom of pressure break powder column 5.The internal diameter of the pressure break body of a gun 2 varies in size and is divided into three sections of upper, middle and lowers according to internal diameter, the internal diameter of the pressure break body of a gun 2 epimeres equals the internal diameter of the pressure break body of a gun 2 hypomeres, the internal diameter in the pressure break body of a gun 2 stage casings is less than the internal diameter of the pressure break body of a gun 2 epimeres, and the external diameter of centralizer body 6 equals the internal diameter in the pressure break body of a gun 2 stage casings.
Be provided with the upper end of connection top connection 1 and the first pressure release passage 12 of toroidal cavity 21 in top connection 1, when top connection 1 was connected with composite perforator 20, a part of high temperature and high pressure gas that produces after 5 detonations of pressure break powder column can be released in the composite perforator 20 of bear gun assembly 10 tops fast by the first pressure release passage 12.Be provided with the second pressure release passage 72 of the inside that is communicated with toroidal cavity 21 and described composite perforator 20 in transition joint 7, the a part of high temperature and high pressure gas that produces after 5 detonations of pressure break powder column also can be released in the composite perforator 20 of bear gun assembly 10 tops fast by the first pressure release passage 12, be that toroidal cavity 21 can be communicated with composite perforator 20 is interior, can keep like this composite perforator 20 inside and outside differential pressure balances, the phenomenon of avoiding the body of a gun because of the uneven caused composite perforator 20 of the body of a gun external and internal pressure of composite perforator 20 to be crushed, as shown in Figure 2.
The lower end of top connection 1 is provided with external screw thread, the upper end of the pressure break body of a gun 2 is provided with internal thread, the lower end of the pressure break body of a gun 2 is provided with internal thread, the upper end of transition joint 7 is provided with external screw thread, the lower end that is top connection 1 is threaded with the upper end of the pressure break body of a gun 2, and the lower end of the pressure break body of a gun 2 is threaded with the upper end of transition joint 7.
The first detonating fuse is installed passage 11, the second through hole 31, the first through hole 41 and the second detonating fuse and passage 71 is installed is communicated with successively, the unobstructed propagation of explosion passage of formation between bear gun assembly 10 and adjacent composite perforator 20.Described detonating fuse comprises main detonating fuse and secondary detonating fuse, described main detonating fuse is installed in passage 11, the second through hole 31, the first through hole 41 and the second detonating fuse installation passage 71 along first detonating fuse that is axially disposed within of described whole perforation unit, secondary detonating fuse can pass the third through-hole 42 that is arranged on central tube 4 sidewalls and connect pressure break powder column 5 and described main detonating fuse, and namely main detonating fuse can be ignited pressure break powder column 5 by secondary detonating fuse.
The utility model also can adopt many covers whole perforation unit to form working string, reaches best effect of increasing production.Multistage composite deep penetrating perforating device comprises three described whole perforation unit that connect successively from the top down as described, namely three described whole perforation unit lay respectively at the upper, middle and lower of described multistage composite deep penetrating perforating device, the composite perforator 20 of superposed described whole perforation unit is fixedly connected with the top connection 1 of the described whole perforation unit that is positioned at middle part, and the composite perforator 20 that is positioned at the described whole perforation unit at middle part is fixedly connected with the top connection 1 of the described whole perforation unit that is positioned at bottom.
When the lower end of composite perforator 20 is provided with lower contact 30, the lower contact 30 of the composite perforator 20 of superposed described whole perforation unit is threaded connection with the top connection 1 of the described whole perforation unit that is positioned at middle part, and the lower contact 30 of the composite perforator 20 of the described whole perforation unit in the middle part of being positioned at is threaded connection with the top connection 1 that is positioned at the described whole perforation unit of bottom.
The above; be only specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or, according to equivalent variations and modification that the utility model scope of patent protection is done, all should still belong to the category that this patent is contained.
Claims (10)
1. multistage composite deep penetrating perforating device, it is characterized in that, described multistage composite deep penetrating perforating device comprises at least one whole perforation unit, the top of described whole perforation unit is bear gun assembly (10), the bottom of described whole perforation unit is composite perforator (20), bear gun assembly (10) comprises the top connection (1) of the tubular that is fixedly connected sequentially from the top down, the pressure break body of a gun (2) of tubular and the transition joint (7) of tubular, be arranged with central tube (4) in the pressure break body of a gun (2), be provided with the first through hole (41) that connects vertically in central tube (4), the upper end of central tube (4) is fixedly connected with top connection (1) and the first through hole (41) is communicated with the first detonating fuse installation passage (11) in top connection (1), the internal communication that the lower end of central tube (4) is fixedly connected with transition joint (7) and the first through hole (41) is installed passage (71) and composite perforator (20) by the second detonating fuse that is arranged in transition joint (7), be provided with the pressure break powder column (5) of tubular in the toroidal cavity (21) that forms between the pressure break body of a gun (2) and central tube (4), the sidewall of the pressure break body of a gun (2) is provided with a plurality of relief holes (22), at the first detonating fuse, passage (11) is installed, the first through hole (41) and the second detonating fuse are installed in passage (71) and are provided be used to the detonating fuse of lighting composite perforator (20) and pressure break powder column (5).
2. multistage composite deep penetrating perforating device according to claim 1, it is characterized in that, the upper end of central tube (4) is connected with top connection (1) by union (3), be provided with the second through hole (31) that connects vertically in union (3), the second through hole (31) is communicated with the first through hole (41), the second through hole (31) is installed passage (11) with the first detonating fuse and is communicated with, and the second through hole is provided with described detonating fuse in (31).
3. multistage composite deep penetrating perforating device according to claim 2, it is characterized in that, the upper end sealing of union (3) is plugged in the first detonating fuse of top connection (1) and installs in passage (11), and the sealing of the lower end of union (3) is plugged in first through hole (41) of central tube (4).
4. multistage composite deep penetrating perforating device according to claim 1, is characterized in that, relief hole (22) is through hole or step through-hole or the step through-hole that is provided with blanking cover.
5. multistage composite deep penetrating perforating device according to claim 1, it is characterized in that, be arranged with respectively the centralizer body (6) of annular outside the top and bottom of pressure break powder column (5), the internal diameter of centralizer body (6) equals the external diameter of pressure break powder column (5), and the external diameter of centralizer body (6) equals the internal diameter of the pressure break body of a gun (2).
6. multistage composite deep penetrating perforating device according to claim 1, it is characterized in that, be provided with the upper end of connection top connection (1) and first pressure release passage (12) of toroidal cavity (21) in top connection (1), be provided with second pressure release passage (72) of the inside that is communicated with toroidal cavity (21) and described composite perforator (20) in transition joint (7).
7. multistage composite deep penetrating perforating device according to claim 1, it is characterized in that, the second detonating fuse is installed in passage (71) and is arranged with sleeve (73), the outer wall at two ends, sleeve (73) up and down is connected with the inwall of transition joint (7) by bearing (75) respectively, be provided with the fourth hole (74) that connects vertically in sleeve (73), the first through hole (41) in the upper end butt of the lower end of central tube (4) and sleeve (73), central tube (4) is by being arranged on the internal communication of the interior fourth hole (74) of sleeve (73) and composite perforator (20).
8. multistage composite deep penetrating perforating device according to claim 1, it is characterized in that, the lower end of top connection (1) is provided with external screw thread, the upper end of the pressure break body of a gun (2) is provided with internal thread, the lower end of the pressure break body of a gun (2) is provided with internal thread, and the upper end of transition joint (7) is provided with external screw thread.
9. multistage composite deep penetrating perforating device according to claim 2, it is characterized in that, described detonating fuse comprises main detonating fuse and secondary detonating fuse, described main detonating fuse is installed in passage (11), the second through hole (31), the first through hole (41) and the second detonating fuse installation passage (71) along first detonating fuse that is axially disposed within of described whole perforation unit, and secondary detonating fuse can pass the third through-hole (42) that is arranged on central tube (4) sidewall and connect pressure break powder column (5) and described main detonating fuse.
10. multistage composite deep penetrating perforating device according to claim 1, it is characterized in that, described multistage composite deep penetrating perforating device comprises three described whole perforation unit that connect successively from the top down, the composite perforator (20) of superposed described whole perforation unit is fixedly connected with the top connection (1) of the described whole perforation unit that is positioned at middle part, and the composite perforator (20) that is positioned at the described whole perforation unit at middle part is fixedly connected with the top connection (1) of the described whole perforation unit that is positioned at bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202027160U CN203285405U (en) | 2013-04-19 | 2013-04-19 | Multi-stage composite deep penetration perforating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202027160U CN203285405U (en) | 2013-04-19 | 2013-04-19 | Multi-stage composite deep penetration perforating device |
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| CN203285405U true CN203285405U (en) | 2013-11-13 |
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| CN2013202027160U Expired - Fee Related CN203285405U (en) | 2013-04-19 | 2013-04-19 | Multi-stage composite deep penetration perforating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225498A (en) * | 2013-04-19 | 2013-07-31 | 中国石油天然气股份有限公司 | Multi-stage composite deep penetration perforating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225498A (en) * | 2013-04-19 | 2013-07-31 | 中国石油天然气股份有限公司 | Multi-stage composite deep penetration perforating device |
| CN103225498B (en) * | 2013-04-19 | 2015-11-18 | 中国石油天然气股份有限公司 | Multi-stage composite deep penetration perforating device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 |