CN217897837U - Continuous fluctuation pulse perforation synergistic device - Google Patents
Continuous fluctuation pulse perforation synergistic device Download PDFInfo
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- CN217897837U CN217897837U CN202121679799.3U CN202121679799U CN217897837U CN 217897837 U CN217897837 U CN 217897837U CN 202121679799 U CN202121679799 U CN 202121679799U CN 217897837 U CN217897837 U CN 217897837U
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Abstract
The utility model provides a continuous fluctuation pulse perforation synergy device, which comprises a perforation gun, wherein the inside of the perforation gun is divided into a plurality of perforation installation spaces; the perforating mechanism is arranged in the perforating installation space and comprises a charge carrier, and perforating charges in different directions are installed on the charge carrier; wherein the perforating charge is a high-energy and low-energy compound perforating charge. The utility model discloses produce continuous pressure fluctuation when can doing work to regional stratum, the stratum receives dragging and shearing action of variable stress ripples between messenger's pore, forms the crack at the pore distal end, and the reservoir is led to better, improves nearly wellbore area seepage flow effect.
Description
Technical Field
The utility model relates to a lasting undulant pulse perforation increase device belongs to oil gas well perforation technology field.
Background
The existing perforation synergy technology mainly comprises the following two types:
the integrated perforation and fracturing synergistic technology. The technique is to ignite the powder cake or box loaded in advance between the perforating bullets at the same time of perforating. After the perforating bullet is detonated, a perforating channel is formed in microsecond-level time, and fuel gas generated by the combustion of the gunpowder enters the perforating channel through the holes in the gun body of the perforating gun in millisecond-level time to perform pressure action on the channel. However, the gas generated after the gunpowder is burnt in the technology can cause the pressure in the perforating gun to be increased rapidly, so that the perforating gun is cracked and deformed, the gun expansion and well clamping accidents are caused, and the normal production of the oil and gas well is delayed. In order to reduce the risk of accidents of gun expansion and well blocking, the pressure relief holes reserved on the gun body of the synergistic perforating gun can cause underground water leakage accidents of the perforating gun due to untight plugging, so that the whole perforating operation fails.
And secondly, split perforation and fracturing synergistic technology. The perforator used in the technology is the same as the conventional perforator, and the conventional high-energy gas fracturing bullets are arranged at the lower part (or the upper part or two ends) of a perforating gun, so that the use safety is better. And igniting the high-energy gas fracturing bullet while perforating, pressurizing high-temperature and high-pressure fuel gas generated by burning the gunpowder in a shaft of the oil-gas well, and entering a perforation duct to perform high-energy gas fracturing on the stratum. The technology avoids the problems of cracking and well-blocking accidents of the gun body of the perforating gun and water leakage of the gun body, but the high-energy gas fracturing bullet cannot be aligned with a perforation duct to release combustion gas, so that the fracturing effect of the gas pressure of gunpowder on an oil-gas layer is limited, and the energy utilization rate is low.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem who exists among the prior art, the utility model provides a pulse perforation increase device of continuous fluctuation, it can produce continuous pressure fluctuation when the acting to target layer region, makes between the pore stratum receive pulling and the shearing action of variable stress ripples, forms the crack at the pore far end, and the reservoir is led to better, improves near wellbore area seepage flow effect.
The utility model provides a continuous fluctuation pulse perforation synergistic device, include:
the perforating gun is internally divided into a plurality of perforating installation spaces;
the perforating mechanism is arranged in the perforating installation space and comprises a charge carrier, and perforating charges in different directions are installed on the charge carrier;
wherein the perforating charge is a high-energy and low-energy compound perforating charge.
The utility model discloses a further improvement lies in, high low energy compound perforating bullet includes first perforating bullet and second perforating bullet, first perforating bullet is high energy perforating bullet, the second perforating bullet is low energy perforating bullet;
when the perforating bullet is installed, the first perforating bullet or the second perforating bullet is selectively installed on the bullet carrier according to the requirements of the stratum, or the first perforating bullet and the second perforating bullet are combined.
The utility model discloses a further improvement lies in, the bullet frame is the tubular structure, and its side is provided with a plurality of mounting holes, every the direction of the mounting hole in the perforation installation space is different, install in the mounting hole first perforating bullet or the second perforating bullet.
The utility model is further improved in that a plurality of stable compartments are arranged in the perforating gun, and the stable compartments are fixedly connected with the bullet rack; the perforation installation spaces are separated by the stable spacing bin.
The utility model discloses a further improvement lies in, be provided with a set of first perforating bullet and a set of second perforating bullet in the perforation installation space.
The utility model discloses a further improvement lies in, first perforating bullet includes the perforating bullet main part and connects fast-burning medicine box in the perforating bullet main part, the second perforating bullet includes the perforating bullet main part and connects slow-burning medicine box in the perforating bullet main part.
The utility model is further improved in that the perforating bullet main body comprises a U-shaped shell, a V-shaped explosive cover is arranged in the shell, and a main explosive is arranged between the shell and the explosive cover; the end of the shell is provided with an initiating explosive.
The utility model discloses a further improvement lies in, be provided with groove structure on the inner wall of perforating gun, the perforation direction of perforating bullet is aimed at groove structure.
The utility model has the further improvement that when the perforating bullet is arranged on the bullet frame, the perforating bullet main body is firstly arranged on the bullet frame, and the fast-burning medicine box and the slow-burning medicine box are connected on the perforating bullet main body at intervals according to the requirement;
during perforation, the fast-burning medicine box and the slow-burning medicine box release high-frequency continuous fluctuation pulses to the stratum.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses a continuous fluctuation pulse perforation synergistic device and a method, which adopt an annular preposed high-energy and low-energy charge mode to be integrally assembled with a perforating bullet to form a high-energy and low-energy synergistic compound perforating bullet; in addition, high-energy and low-energy synergistic compound perforating charges can be filled on the perforating charge carrier in a spaced assembly mode. Through the utility model discloses produce continuous pressure fluctuation when can be to the acting of target layer region, the stratum receives dragging and shearing action of variable stress ripples between messenger's pore, forms the crack at the pore distal end, and the reservoir is led to better, improves nearly wellbore area seepage flow effect.
A pulse perforation increase device and method of fluctuation lasts, compound perforation bullet of wherein high low energy increase can carry out perforation optimal design according to the stratum characteristic, adjusts the matching relation of high low energy leading charge, if can take low energy leading charge module to thin layer oil gas reservoir, high energy leading charge module is taken to thick layer oil gas reservoir, also can take the mode of continuous matching or interval matching according to geological characteristics. The perforator does not need to preset a pressure relief hole, and the energy utilization rate is improved while the safety of the perforating gun body pipe column is ensured.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a continuous wave pulse perforation synergy device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a main body of a perforating charge according to an embodiment of the present invention;
fig. 3 is a schematic pressure curve diagram of the continuous wave pulse perforation synergy technique during the operation of the continuous wave pulse perforation synergy device according to an embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
The meaning of the reference symbols in the drawings is as follows: 1. the perforating gun comprises a perforating gun body 2, a bullet frame 3, a perforating bullet main body 4, a fast-burning explosive box 5, a slow-burning explosive box 6, a stable separation bin 7, a shell body 8, a shaped charge cover 9, a main explosive 10 and an initiating explosive.
Detailed Description
In order to make the technical solutions and advantages of the present invention more clearly understood, the following description is made in further detail for the exemplary embodiments of the present invention with reference to the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict.
Fig. 1 schematically shows a continuous wave pulse perforation synergy device according to an embodiment of the invention, which comprises a perforating gun 1, wherein the perforating gun 1 is a tubular structure, and a plurality of compartments are divided in the perforating gun 1. And a perforating unit is arranged in the separation bin and comprises a charge frame 2, and perforating charges are arranged on the charge frame 2. Wherein the perforating charge is a high-energy and low-energy compound perforating charge.
According to the continuous fluctuation pulse perforation enhancement device, the high-energy and low-energy compound perforating charge is adopted to change the expression form of the performance after perforation, and a plurality of fluctuation pulses are formed after perforation to continuously vibrate the stratum. When the device is used, continuous pressure fluctuation can be generated when a target layer area is acted, so that the stratum among the pore channels is subjected to the pulling and shearing action of variable stress waves, cracks are formed at the far ends of the pore channels, the reservoir is communicated better, and the seepage effect of a near-wellbore area is improved.
In one embodiment, the high and low energy compound charges include a first charge and a second charge, the first charge being a high energy charge and the second charge being a low energy charge. The manner in which the first charge, the second charge, or a combination of both are used may be selected to selectively mount on the carrier 2 according to formation requirements.
When the continuous fluctuation pulse perforation reinforcing device is used, different perforating bullets are selected according to different stratum requirements, for example, high-energy perforating bullets are adopted for a thick-layer oil and gas reservoir, low-energy perforating bullets can be adopted for a thin-layer oil and gas reservoir, and a combination mode of continuous matching or interval matching can be adopted according to geological characteristics.
The high-energy and low-energy matched front-loaded charges are adopted, the performance form of the performance after perforation is changed, a plurality of fluctuation pulses are formed after perforation, and the stratum is continuously vibrated. The pulse peak pressure is not high but the duration is long, the pulse frequency switching is fast, the acting efficiency is high, the formation stress can be effectively relieved, the formation physical properties of a near well zone and even a far zone are influenced, and the reservoir transformation effect is improved.
In one embodiment, the charge carrier 2 is a tubular structure, and has a plurality of mounting holes on its side surface, the direction of the mounting hole in each of the perforation mounting spaces is different, and the first perforating charge or the second perforating charge is mounted in the mounting holes.
In the device according to the present embodiment, the carrier 2 is a steel tube structure device for holding the perforating charges, and its structure determines the number of charges to be loaded per meter, the perforating phase, and the manner of loading the perforating charges, and it is loaded in the tube of the perforating gun 1 together with the loaded perforating charges. The end part of the bullet rack 2 is provided with a positioning disc for fixing the bullet rack 2 in the gun. And a detonating cord is arranged on one side of the bullet rack 2 opposite to the mounting hole and is used for detonating the bullet hole.
In one embodiment, a plurality of stable compartments 6 are arranged in the perforating gun 1, and the perforating installation spaces are separated by the stable compartments 6. The stable compartment 6 is fixedly connected with the bullet rack 2, and the embodiment adopts a mode that one bullet rack 2 and a plurality of stable compartments 6 are fixedly connected to form a whole; can adopt a plurality of bullet framves 2, every bullet frame 2 is fixed respectively between two stable compartment 6, as long as guarantee that bullet frame 2 and stable compartment 6 are connected firmly all the utility model discloses an within range.
In a preferred embodiment, a set of first perforating charges and a set of second perforating charges are arranged in the perforating installation space. The first and second charges are mounted in a spaced arrangement.
In a preferred embodiment, the first perforating charge comprises a charge body 3 and a fast-burning cartridge 4 connected to the charge body 3, and the second perforating charge comprises a charge body 3 and a slow-burning cartridge 5 connected to the charge body 3.
The structure of the perforating hole main body in the first perforating charge and the structure of the perforating hole main body in the second perforating charge are the same, and the structure of the fast combustion medicine box 4 and the slow combustion medicine box 5 are different, and the first perforating charge and the second perforating charge can be assembled on the perforating charge main body 3. When in use, different cartridges (fast-burning cartridges 4 or slow-burning cartridges 5) are arranged on the perforating charge main body 3 according to requirements, so that different types of high-energy and low-energy compound perforating charges are formed.
The medicine box is loaded with composite energetic materials and is assembled at the opening part of the perforating bullet, and the composite energetic materials enter a perforation duct along with metal jet flow under the pressure trend of an energy-gathered detonation field after the perforating bullet is subjected to detonation irradiation, and are subjected to secondary reaction with underground media and detonation products under high-temperature and high-pressure states to form secondary power loading on the duct.
In one embodiment, as shown in fig. 2, the perforating charge body 3 comprises a U-shaped shell 7, a V-shaped charge cover 8 is arranged in the shell 7, and a main explosive 9 is arranged between the shell 7 and the charge cover 8; the end of the housing 7 is provided with an initiating charge 10. The primary explosive 10 is connected with a detonating cord, and the primary explosive 10 is detonated by the detonating cord, and the primary explosive 9 is detonated by the primary explosive 10. After explosion, high-speed high-temperature metal jet flow can be generated and can penetrate through the casing and the stratum, so that the stratum is communicated with a shaft. Oil and gas can enter the shaft through the channel.
In one embodiment, the perforating gun 1 is provided with a groove structure on the inner wall, and the perforating direction of the perforating charge is aligned with the groove structure.
Through set up groove structure messenger perforating gun 1's outer wall formation weak position on perforating gun 1, when perforating bullet explosion perforation, the weak position is changeed and is penetrated, guarantees the effect of perforation.
Use according to the utility model discloses a continuous fluctuation pulse perforation increase method, it includes following step:
firstly, mounting a perforating bullet on a bullet rack 2, and loading the bullet rack 2 into a stable compartment 6;
then, the combined perforating bullet, the bullet frame 2 and the stable compartment 6 are placed into the perforating gun 1 and fixed to form the continuous fluctuation pulse perforating synergistic device;
and putting the continuous fluctuation pulse perforation synergistic device into the well and carrying out perforation.
In a preferred embodiment, when the perforating charge is installed on the charge carrier 2, the perforating charge body 3 is firstly installed on the charge carrier 2, and the fast-burning charge box 4 and the slow-burning charge box 5 are connected to the perforating charge body 3 at intervals according to requirements;
during perforation, the fast-burning explosive box 4 and the slow-burning explosive box 5 release high-frequency continuous fluctuation pulses to the stratum.
The pressure curve of the high frequency continuous wave pulse is shown in fig. 3.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to be construed to include preferred embodiments and all such changes and/or modifications as fall within the scope of the invention, and all such changes and/or modifications as are made to the embodiments of the present invention are intended to be covered by the scope of the invention.
Claims (7)
1. A continuous wave pulse perforation enhancement device, comprising:
the perforating gun (1) is internally divided into a plurality of perforating installation spaces;
the perforating mechanism is arranged in the perforating installation space and comprises a charge carrier (2), and perforating charges in different directions are installed on the charge carrier (2);
wherein the perforating charge is a high-energy and low-energy compound perforating charge;
the high-low energy compound perforating charge comprises a first perforating charge and a second perforating charge, wherein the first perforating charge is a high-energy perforating charge, and the second perforating charge is a low-energy perforating charge;
when the perforating device is installed, a first perforating charge or a second perforating charge is selectively installed on the charge carrier (2) according to the requirements of the stratum, or the first perforating charge and the second perforating charge are combined;
the first perforating charge comprises a perforating charge body (3) and a fast-burning medicine box (4) connected to the perforating charge body (3), and the second perforating charge comprises a perforating charge body (3) and a slow-burning medicine box (5) connected to the perforating charge body (3).
2. The sustained surge perforation synergy apparatus according to claim 1, wherein the charge carrier (2) is a tubular structure having a plurality of mounting holes disposed on a side thereof, the mounting holes in each of the perforation mounting spaces having different directions, and the first or second charges are mounted in the mounting holes.
3. The perforating synergistic device of claim 2, characterized in that a plurality of stable compartments (6) are provided in said perforating gun (1), said stable compartments (6) being fixedly connected to said charge carrier (2); the perforation installation spaces are separated by the stable separation cabin (6).
4. The sustained surge perforation synergy apparatus of claim 3, wherein a first plurality of charges and a second plurality of charges are disposed within the perforation installation space.
5. The perforating synergistic device of claim 4, characterized in that said perforating charge body (3) comprises a U-shaped casing (7), a V-shaped charge jacket (8) is arranged in said casing (7), and a main explosive (9) is arranged between said casing (7) and said charge jacket (8); the end part of the shell (7) is provided with an initiating explosive (10).
6. A continuously fluctuating pulse perforation efficiency device according to claim 5, characterized in that said perforating gun (1) is provided with indentation formations on its inside wall, the perforation direction of said charges being aligned with said indentation formations.
7. The sustained fluctuation pulse perforation synergy apparatus according to claim 6, wherein when the perforating charges are installed on the charge carrier (2), the charge carrier (2) is first installed with the main body (3) of the perforating charges, and the fast-burning charge case (4) and the slow-burning charge case (5) are connected to the charge carrier (3) at intervals as required;
during perforation, the fast-burning medicine box (4) and the slow-burning medicine box (5) release high-frequency continuous fluctuation pulses to the stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121679799.3U CN217897837U (en) | 2021-07-23 | 2021-07-23 | Continuous fluctuation pulse perforation synergistic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121679799.3U CN217897837U (en) | 2021-07-23 | 2021-07-23 | Continuous fluctuation pulse perforation synergistic device |
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| Publication Number | Publication Date |
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| CN217897837U true CN217897837U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121679799.3U Active CN217897837U (en) | 2021-07-23 | 2021-07-23 | Continuous fluctuation pulse perforation synergistic device |
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| CN (1) | CN217897837U (en) |
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- 2021-07-23 CN CN202121679799.3U patent/CN217897837U/en active Active
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