CN212406693U - Horizontal well hydraulic fracturing perforator - Google Patents
Horizontal well hydraulic fracturing perforator Download PDFInfo
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- CN212406693U CN212406693U CN202021284400.7U CN202021284400U CN212406693U CN 212406693 U CN212406693 U CN 212406693U CN 202021284400 U CN202021284400 U CN 202021284400U CN 212406693 U CN212406693 U CN 212406693U
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Abstract
The utility model discloses a horizontal well hydraulic fracturing perforator, which comprises an upper joint, an intermediate element and a lower joint, wherein an upper channel is arranged inside the upper joint, a lower channel is arranged inside the lower joint, the upper joint is detachably connected with the lower joint, one end of the upper joint is used for being communicated with an upper fracturing string, one end of the lower joint is used for being communicated with a lower fracturing string, a plurality of first through holes are circumferentially arranged on the side wall of the upper joint and are used for being communicated with the upper channel and the outside, the intermediate element is arranged in the upper channel and is internally provided with a middle channel, a second through hole is arranged on the side wall of the intermediate element and is used for being communicated with the middle channel and the first through hole, a rotating assembly can drive the intermediate element to rotate under the action of fracturing fluid to realize the switching between the fracturing position and the circulating position of the intermediate element and lock the intermediate element in the fracturing position or the circulating position, the, can adapt to complex environment in the pit, satisfy different user demands.
Description
Technical Field
The utility model relates to an oil gas exploitation technical field specifically relates to a horizontal well hydraulic fracturing perforator.
Background
In the petroleum and natural gas industry, the fracturing operation is a production increasing measure of an oil-gas well with wide application prospect, and is also a main mode of natural gas exploitation at present, and the operation mechanism is that fracturing liquid mixed with chemical substances is pumped into a production layer of an oil-gas reservoir, so that a stratum forms cracks. The hydraulic sand-blasting perforation technology is to transmit high-pressure sand-containing fluid to the bottom of a well through the ground, perforate a casing and a well-cementing cement sheath at a target layer position in the well, and penetrate a stratum to a certain depth to form an oil-gas channel. Particles such as gravel and the like mixed in the fracturing fluid can be used as support in formation fractures to prevent fractures from closing, and the fracturing operation is mainly applied to oil and gas wells with a deep plugging range or low-permeability zones. The existing hydraulic sand blasting perforator generally fixes a nozzle in a mounting hole of a body by utilizing threads, most of the existing fracturing sand blasting guns are of a sliding sleeve opening and closing type, actions such as ball throwing, nail shearing and the like are accompanied, the operation method is complex, the construction efficiency is low, and the existing hydraulic sand blasting perforator is usually only suitable for a vertical well; for a horizontal well, since the ball cannot vertically fall to the ball seat position under the action of self gravity, the ball cannot be thrown in place, the sealing of a pipe column cannot be realized, and the construction cannot be carried out.
Disclosure of Invention
The utility model aims at providing a horizontal well hydraulic fracturing perforator to solve the problem that above-mentioned prior art exists, make the fracturing operation easy operation of horizontal well, can adapt to complicated environment in the pit, satisfy different user demands.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a horizontal well hydraulic fracturing perforator, which comprises an upper joint, an intermediate element and a lower joint, wherein an upper channel is arranged inside the upper joint, a lower channel is arranged inside the lower joint, one end of the upper joint is sleeved on the periphery of the lower joint and is detachably connected with the lower joint, the other end of the upper joint is used for communicating with an upper fracturing string, one end of the lower joint, which is far away from the upper joint, is used for communicating with a lower fracturing string, a plurality of first through holes are circumferentially arranged on the side wall of the upper joint and are used for communicating the upper channel with the outside, the intermediate element is arranged in the upper channel, a middle channel is arranged inside the intermediate element, a second through hole is arranged on the side wall of the intermediate element corresponding to each first through hole, and is used for communicating the middle channel with the first through holes, well passageway with go up the passageway and communicate all the time, still include rotating assembly, rotating assembly can drive under the effect of fracturing fluid the rotatory realization of intermediate element the switching of intermediate element in fracturing position and circulation position and with the intermediate element locks in the fracturing position or circulation position, the intermediate element is located during the fracturing position, first through-hole with second through-hole intercommunication just well passageway with the passageway staggers down, the intermediate element is located during the circulation position, first through-hole with the second through-hole staggers just well passageway with the passageway intercommunication down.
Preferably, the rotating assembly includes a reset element, a positioning pin and a sliding groove track, the sliding groove track is disposed on an outer side wall of the intermediate element, a rotating portion and a locking portion are disposed on an inner side wall of the sliding groove track, a pin hole is disposed on a side wall of the upper joint corresponding to the sliding groove track, the positioning pin penetrates through the pin hole and extends into the sliding groove track, a protrusion is circumferentially disposed on an outer side wall of the intermediate element between the sliding groove track and the lower joint, a positioning block is disposed on an outer side wall of the lower joint, two ends of the reset element respectively extend to a lower end face of the protrusion and an upper end face of the positioning block and are used for resetting the intermediate element until the positioning pin contacts the inner side wall of the sliding groove track, which is close to the lower joint, and the intermediate element moves towards the lower joint under an axial acting force of the fracturing fluid along the intermediate, the rotating part drives the intermediate element to rotate when contacting the positioning pin, and the locking part stops rotating and enables the intermediate element to be located at a fracturing position or a circulating position when contacting the positioning pin.
Preferably, the outer wall of the lower joint is three-stage stepped, a first step, a second step and a third step are respectively arranged on one side of the lower joint far away from the upper joint, the second step is the positioning block, the first step is in contact with one end of the upper joint, the second step and the third step both extend into the upper channel, and before the fracturing fluid is injected, the reset element can reset the intermediate element to a position where a gap is formed between the third step and the intermediate element.
Preferably, the orbital inside wall of spout is the cockscomb structure, the portion of rotating is the inclined plane of sawtooth, locking portion is the recess bottom of sawtooth, on the locating pin with the orbital face of contact of spout is the inclined plane, just the inclined plane of locating pin with the portion of rotating can laminate.
Preferably, the outer side wall of the second step is in threaded connection with the inner side wall of the upper channel.
Preferably, the middle channel includes a connecting channel and a first eccentric channel, the connecting channel is disposed at one end of the middle element far away from the lower joint, the connecting channel and the upper channel are coaxially disposed with the upper joint respectively, one end of the connecting channel is communicated with the upper channel, the other end of the connecting channel is communicated with the first eccentric channel, and the cross-sectional area of the first eccentric channel is smaller than that of the connecting channel.
Preferably, the lower channel includes second eccentric passageway and play liquid channel, the second eccentric passageway is located be close to on the lower clutch the one end of intermediate component, the one end of second eccentric passageway can with first eccentric passageway intercommunication, the other end of second eccentric passageway with play liquid channel intercommunication, just when the intermediate component is in the circulation position, first eccentric passageway with second eccentric passageway intercommunication, when the intermediate component is in the fracturing position, first eccentric passageway by the up end shutoff of lower clutch.
Preferably, an internal thread is arranged at one end, far away from the lower channel, of the upper joint, and one end, far away from the lower channel, of the upper joint is used for being in threaded connection with the upper fracturing string.
Preferably, keep away from on the lower clutch the one end of last passageway is equipped with the internal thread, just keep away from on the lower clutch the one end of last passageway is used for with lower part fracturing string threaded connection.
Preferably, each first through hole is correspondingly provided with a nozzle, and the nozzles are used for jetting fracturing fluid.
The utility model discloses for prior art gain following technological effect:
the utility model provides a horizontal well hydraulic fracturing perforator, which comprises an upper joint, an intermediate element and a lower joint, wherein the upper joint is internally provided with an upper channel, the lower joint is internally provided with a lower channel, the intermediate element is internally provided with a middle channel, the upper channel, the middle channel and the lower channel can form a complete internal channel so as to facilitate the smooth circulation of fracturing fluid, one end of the upper joint is sleeved on the periphery of the lower joint and is detachably connected with the lower joint, the other end of the upper joint is used for communicating an upper fracturing string, one end of the lower joint far away from the upper joint is used for communicating a lower fracturing string, a plurality of first through holes are circumferentially arranged on the side wall of the upper joint, the first through holes are used for communicating the upper channel with the outside, the intermediate element is arranged in the upper channel, a second through hole is arranged on the side wall of the intermediate element corresponding to each first through hole, and is used for communicating the middle channel, thereby communicating the middle channel with the outside, the fracturing fluid reaches the middle channel through the upper channel and reaches the outside through the second through hole and the first through hole in sequence, the sand blasting fracturing operation is realized, the middle channel is always communicated with the upper channel, the fracturing fluid can enter the middle channel through the upper channel, the rotating component can drive the middle element to rotate under the action of the fracturing fluid, the switching between the fracturing position and the circulating position of the middle element is realized, the middle element is locked at the fracturing position or the circulating position, the control is realized by utilizing the fracturing fluid, the operation is simple, the construction efficiency is high, the influence of gravity is avoided, and when the middle element is positioned at the fracturing position, the first through hole is communicated with the second through hole, the middle channel is staggered with the lower channel, so that the fracturing fluid in the middle channel can not enter the lower channel, and the fracturing fluid is discharged out of the outside through the second through hole and the first through hole in sequence along with the, carry out the sandblast fracturing, when the intermediate member was located the circulating position, first through-hole staggers and well passageway and lower passageway intercommunication with the second through-hole, and fracturing fluid can't discharge the external world through first through-hole and second through-hole, but enters into the lower passageway to at fracturing string inner loop, so that carry out the sandblast fracturing to next position.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a horizontal well hydraulic fracturing perforator provided by the present invention in a fracturing state;
fig. 2 is a schematic diagram of the horizontal well hydraulic fracturing perforator provided by the present invention in a circulation state;
in the figure: 1-upper joint, 11-upper channel, 12-first through hole, 2-intermediate element, 21-connecting channel, 22-first eccentric channel, 23-second through hole, 24-chute track, 3-lower joint, 31-first step, 32-second step, 33-third step, 34-second eccentric channel, 35-liquid outlet channel, 4-resetting element, 5-nozzle and 6-positioning pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a horizontal well hydraulic fracturing perforator to solve the fracturing operation difficulty of current horizontal well, construct complicated technical problem.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-2, the utility model provides a horizontal well hydraulic fracturing perforator, which comprises an upper joint 1, an intermediate element 2 and a lower joint 3, wherein an upper channel 11 is arranged inside the upper joint 1, a lower channel is arranged inside the lower joint 3, a middle channel is arranged inside the intermediate element 2, the upper channel 11, the middle channel and the lower channel can form a complete internal channel so as to facilitate smooth circulation of fracturing fluid, one end of the upper joint 1 is sleeved on the periphery of the lower joint 3 and detachably connected with the lower joint 3, the other end of the upper joint 1 is used for communicating with an upper fracturing string, one end of the lower joint 3 far away from the upper joint 1 is used for communicating with a lower fracturing string, a plurality of first through holes 12 are circumferentially arranged on the side wall of the upper joint 1, the first through holes 12 are used for communicating the upper channel 11 with the outside, the intermediate element 2 is arranged in the upper channel 11, and a second through hole 23 is arranged on the side wall of the intermediate element 2 corresponding to each first through hole, the second through hole 23 is used for communicating the middle channel with the first through hole 12, so that the middle channel is communicated with the outside, the fracturing fluid reaches the middle channel through the upper channel 11 and then reaches the outside through the second through hole 23 and the first through hole 12 in sequence, sand blasting fracturing operation is realized, the middle channel is always communicated with the upper channel 11, the fracturing fluid can enter the middle channel through the upper channel 11, the sand blasting fracturing device further comprises a rotating assembly, the rotating assembly can drive the middle element 2 to rotate under the action of the fracturing fluid, so that the middle element 2 is switched between a fracturing position and a circulating position and is locked at the fracturing position or the circulating position, the sand blasting fracturing fluid is used for controlling, the operation is simple, the construction efficiency is high, the sand blasting device is not influenced by gravity, when the middle element 2 is located at the fracturing position, the first through hole 12 is communicated with the second through hole 23, the middle channel is staggered with the lower channel, so that the fracturing fluid in the, along with the continuous supplement of the fracturing fluid, the fracturing fluid is discharged outside through the second through hole 23 and the first through hole 12 in sequence, sand blasting and fracturing are carried out, at the moment, the horizontal well hydraulic sand blasting perforator is in a fracturing state, when the intermediate element 2 is located at a circulating position, the first through hole 12 and the second through hole 23 are staggered, the middle channel is communicated with the lower channel, the fracturing fluid cannot be discharged outside through the first through hole 12 and the second through hole 23, but enters the lower channel, and therefore the fracturing fluid circulates in a fracturing pipe column so as to carry out sand blasting and fracturing on the next position, and at the moment, the horizontal well hydraulic sand blasting perforator is in a circulating state.
Specifically, the rotating assembly comprises a reset element 4, a positioning pin 6 and a chute track 24, the chute track 24 is arranged on the outer side wall of the intermediate element 2, the inner side wall of the chute track 24 is provided with a rotating part and a locking part, the upper joint 1 is provided with a pin hole corresponding to the side wall of the chute track 24, the positioning pin 6 passes through the pin hole and extends into the chute track 24, the intermediate element 2 is circumferentially provided with a bulge on the outer side wall between the chute track 24 and the lower joint 3, the outer side wall of the lower joint 3 is provided with a positioning block, two ends of the reset element 4 respectively extend to the lower end face of the bulge and the upper end face of the positioning block and are used for resetting the intermediate element 2 until the positioning pin 6 contacts the inner side wall of the chute track 24, which is close to the lower joint 3, so as to facilitate the next movement of the intermediate element 2, the intermediate element 2, the rotation part drives the intermediate element 2 to rotate when contacting the positioning pin 6, and when the locking part contacts the positioning pin 6, the intermediate element 2 stops rotating and enables the intermediate element 2 to be located at a fracturing position or a circulating position, and more preferably, the reset element 4 is a spring.
The outer wall of lower clutch 3 is the tertiary echelonment, and by keeping away from to be the first ladder 31, second ladder 32 and third ladder 33 respectively to the one side that is close to top connection 1, second ladder 32 is the locating piece, first ladder 31 contacts with the one end of top connection 1, the one end card of top connection 1 is on the up end of first ladder 31 promptly, and second ladder 32 and third ladder 33 all stretch into to last passageway 11 in, before injecting fracturing fluid, reset element 4 can reset intermediate element 2 to third ladder 33 and intermediate element 2 between gapped to provide the space for the next motion of intermediate element 2.
The inside wall of spout track 24 is the cockscomb structure, the rotation part is the inclined plane of sawtooth, the locking part is the recess bottom of sawtooth, the face that contacts with spout track 24 on the locating pin 6 is the inclined plane, and the inclined plane and the rotation part of locating pin 6 can laminate, when middle component 2 moves to the direction that is close to lower clutch 3 under the effect of fracturing fluid, because the lateral wall of spout track 24 is the inclined plane, when locating pin 6 takes place relative motion with spout track 24, locating pin 6 extrudes spout track 24's lateral wall and makes middle component 2 take place to rotate, until rotating to fracturing position or circulation position, accomplish the circulation of sandblast fracturing or fracturing fluid, the concrete structure of spout track 24 and the theory of motion of middle component 2 are unanimous with the structure and the principle of elasticity ballpoint, do not do here and do not give unnecessary details again.
The outer side wall of the second step 32 is in threaded connection with the inner side wall of the upper channel 11, so that the installation and the disassembly are convenient, and the stability of the integral connection is ensured.
The middle channel comprises a connecting channel 21 and a first eccentric channel 22, the connecting channel 21 is arranged at one end of the middle element 2 far away from the lower joint 3, the connecting channel 21 and the upper channel 11 are respectively arranged coaxially with the upper joint 1, one end of the connecting channel 21 is communicated with the upper channel 11, the other end of the connecting channel 21 is communicated with the first eccentric channel 22, so that the fracturing fluid can pass through the upper channel 11 and the connecting channel 21 in sequence all the time and finally reaches the first eccentric channel 22, the cross-sectional area of the first eccentric channel 22 is smaller than that of the connecting channel 21, when the fracturing fluid reaches the first eccentric channel 22 from the connecting channel 21, the fracturing fluid can give a certain impact force to the middle element 2 due to sudden reduction of the channel area, so that the middle element 2 moves towards the flowing direction of the fracturing fluid, namely the motion power of the middle element 2 is directly provided by the fracturing fluid without the processes of ball throwing, nail cutting and the like, the method is not influenced by gravity, is simple to operate and high in construction efficiency, and is suitable for both horizontal wells and vertical wells.
The lower channel comprises a second eccentric channel 34 and a liquid outlet channel 35, the second eccentric channel 34 is arranged at one end, close to the middle element 2, of the lower joint 3, one end of the second eccentric channel 34 can be communicated with the first eccentric channel 22, the other end of the second eccentric channel 34 is communicated with the liquid outlet channel 35, when the middle element 2 is in a circulating position, the first eccentric channel 22 is communicated with the second eccentric channel 34, and when the middle element is in a fracturing position, the first eccentric channel 22 is blocked by the upper end face of the lower joint 3; when the intermediate element 2 rotates to the state that the first eccentric channel 22 is communicated with the second eccentric channel 34, the first through hole 12 and the second through hole 23 are staggered, fracturing fluid cannot be discharged outside through the first through hole 12, and as the first eccentric channel 22 is communicated with the inside of the second eccentric channel 34, the fracturing fluid can reach the liquid outlet channel 35 through the second eccentric channel 34, so that the fracturing fluid enters a lower fracturing string to complete subsequent fracturing operation; when the middle element 2 rotates to the state that the first eccentric channel 22 and the second eccentric channel 34 are staggered, the first through hole 12 and the second through hole 23 correspond to each other and are communicated, the fracturing fluid can be discharged through the second through hole 23 and the first through hole 12 to perform sand blasting fracturing on the outside of the pipe column, the first eccentric channel 22 is not communicated with the inside of the second eccentric channel 34, the fracturing fluid cannot enter the second eccentric channel 34, so that the sand blasting fracturing can be smoothly performed, when the fracturing fluid enters the first eccentric channel 22 through the connecting channel 21, because the inner diameter of the first eccentric channel 22 is suddenly reduced, the connecting channel 21 bears the pressure in the axial direction of the middle element 2, the middle element 2 can move towards the flowing direction of the fracturing fluid, and because the chute track 24 is of a zigzag structure, when the middle element 2 moves towards the flowing direction of the fracturing fluid, under the combined action of the resetting element 4 and the fracturing fluid, the positioning pin 6 is tightly attached to the sawteeth, so that the intermediate element 2 rotates in the moving process, and sand blasting fracturing or fracturing fluid circulation is completed.
An internal thread is arranged at one end of the upper joint 1 far away from the lower channel, and one end of the upper joint 1 far away from the lower channel is used for being in threaded connection with the upper fracturing string; the one end of keeping away from last passageway 11 on the lower clutch 3 is equipped with the internal thread, and the one end and the lower part fracturing string threaded connection of keeping away from last passageway 11 on the lower clutch 3 facilitate the installation and dismantle.
Every 12 punishment of first through-holes all correspond and are equipped with a nozzle 5, and nozzle 5 is used for the blowout of fracturing fluid, improves the work efficiency of sandblast fracturing.
In the fracturing working process, the upper joint 1 is in threaded connection with the upper fracturing string, and the lower joint 3 is in threaded connection with the lower fracturing string and is lowered into a specified fracturing position in the well. By controlling the ground drilling pump, the drilling pump is started once when the ground drilling pump is stopped, the intermediate element 2 moves and rotates once under the action of the fracturing fluid, namely the positioning pin 6 reciprocates up and down once relative to the chute track 24, so that the superposition and staggered conversion of the first through hole 12 and the second through hole 23 and the communication and staggered conversion of the first eccentric channel 22 and the second eccentric channel 34 are realized, and the conversion of the fracturing fluid outside the fracturing string and the internal circulation of the fracturing string is realized.
More preferably, the number of first through-hole 12 and second through-hole 23 is 3 ~ 6 respectively, and is preferred 4, guarantees sand blasting fracturing effect. However, the utility model provides an in the horizontal well hydraulic fracturing perforator, the quantity of first through-hole 12 and second through-hole 23 all is not limited to above-mentioned limited, and in the actual production process, technical personnel in the field can make the adaptability change to the quantity of first through-hole 12 and second through-hole 23 according to actual construction needs to satisfy the field usage.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. A horizontal well hydraulic fracturing perforator is characterized in that: the fracturing string comprises an upper joint, an intermediate element and a lower joint, wherein an upper channel is arranged inside the upper joint, a lower channel is arranged inside the lower joint, one end of the upper joint is sleeved on the periphery of the lower joint and is detachably connected with the lower joint, the other end of the upper joint is used for communicating an upper fracturing string, one end of the lower joint, which is far away from the upper joint, is used for communicating a lower fracturing string, a plurality of first through holes are circumferentially arranged on the side wall of the upper joint and are used for communicating the upper channel with the outside, the intermediate element is arranged in the upper channel, a middle channel is arranged inside the intermediate element, a second through hole is arranged on the side wall of the intermediate element corresponding to each first through hole, the second through holes are used for communicating the middle channel with the first through holes, and the middle channel is communicated with the upper channel all the time, still include rotating assembly, rotating assembly can drive under the effect of fracturing fluid the rotatory realization of intermediate element the intermediate element in fracturing position and circulating position switch and with the intermediate element lock in the fracturing position or the circulating position, the intermediate element is located during the fracturing position, first through-hole with the second through-hole intercommunication just well the passageway with the passageway staggers down, the intermediate element is located during the circulating position, first through-hole with the second through-hole staggers just well the passageway with the passageway intercommunication down.
2. The horizontal well hydraulic fracturing perforator of claim 1, wherein: the rotating assembly comprises a reset element, a positioning pin and a chute track, the chute track is arranged on the outer side wall of the intermediate element, the inner side wall of the chute track is provided with a rotating part and a locking part, the upper joint is provided with a pin hole corresponding to the side wall of the chute track, the positioning pin penetrates through the pin hole and extends into the chute track, the intermediate element is circumferentially provided with a bulge on the outer side wall between the chute track and the lower joint, the outer side wall of the lower joint is provided with a positioning block, two ends of the reset element respectively extend to the lower end face of the bulge and the upper end face of the positioning block and are used for resetting the intermediate element until the positioning pin contacts the inner side wall of the chute track close to the lower joint, and the intermediate element moves towards the lower joint under the axial acting force of the fracturing fluid along the intermediate element, the rotating part drives the intermediate element to rotate when contacting the positioning pin, and the locking part stops rotating and enables the intermediate element to be located at a fracturing position or a circulating position when contacting the positioning pin.
3. The horizontal well hydraulic fracturing perforator of claim 2, wherein: the outer wall of the lower joint is in a three-stage ladder shape, a first ladder, a second ladder and a third ladder are respectively arranged on one side, far away from the upper joint, close to the upper joint, of the lower joint, the second ladder is the positioning block, the first ladder is in contact with one end of the upper joint, the second ladder and the third ladder both extend into the upper channel, and before fracturing fluid is injected, the reset element can reset the intermediate element to the third ladder and a gap is reserved between the intermediate element.
4. The horizontal well hydraulic fracturing perforator of claim 3, wherein: the orbital inside wall of spout is the cockscomb structure, the rotation portion does the inclined plane of sawtooth, locking portion does the recess bottom of sawtooth, on the locating pin with the face of spout track contact is the inclined plane, just the inclined plane of locating pin with rotation portion can laminate.
5. The horizontal well hydraulic fracturing perforator of claim 4, wherein: and the outer side wall of the second step is in threaded connection with the inner side wall of the upper channel.
6. The horizontal well hydraulic fracturing perforator of claim 5, wherein: the middle channel comprises a connecting channel and a first eccentric channel, the connecting channel is arranged at one end, far away from the lower joint, of the middle element, the connecting channel and the upper channel are equally arranged and are coaxially arranged with the upper joint, one end of the connecting channel is communicated with the upper channel, the other end of the connecting channel is communicated with the first eccentric channel, and the cross sectional area of the first eccentric channel is smaller than that of the connecting channel.
7. The horizontal well hydraulic fracturing perforator of claim 6, wherein: the passageway includes second eccentric passageway and goes out the liquid channel down, the eccentric passageway of second is located be close to on the lower clutch the one end of intermediate component, the one end of the eccentric passageway of second can with first eccentric passageway intercommunication, the other end of the eccentric passageway of second with go out the liquid channel intercommunication, just when the intermediate component is in the circulating position, first eccentric passageway with the eccentric passageway intercommunication of second, when the intermediate component is in the fracturing position, first eccentric passageway quilt the up end shutoff of lower clutch.
8. The horizontal well hydraulic fracturing perforator of claim 1, wherein: and an internal thread is arranged at one end of the upper joint, which is far away from the lower channel, and one end of the upper joint, which is far away from the lower channel, is used for being in threaded connection with the upper fracturing string.
9. The horizontal well hydraulic fracturing perforator of claim 1, wherein: keep away from on the lower clutch the one end of going up the passageway is equipped with the internal thread, just keep away from on the lower clutch the one end of going up the passageway is used for with lower part fracturing string threaded connection.
10. The horizontal well hydraulic fracturing perforator of claim 1, wherein: and each first through hole is correspondingly provided with a nozzle, and the nozzles are used for jetting fracturing fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021284400.7U CN212406693U (en) | 2020-07-03 | 2020-07-03 | Horizontal well hydraulic fracturing perforator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021284400.7U CN212406693U (en) | 2020-07-03 | 2020-07-03 | Horizontal well hydraulic fracturing perforator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212406693U true CN212406693U (en) | 2021-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021284400.7U Expired - Fee Related CN212406693U (en) | 2020-07-03 | 2020-07-03 | Horizontal well hydraulic fracturing perforator |
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| Country | Link |
|---|---|
| CN (1) | CN212406693U (en) |
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2020
- 2020-07-03 CN CN202021284400.7U patent/CN212406693U/en not_active Expired - Fee Related
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Effective date of registration: 20210805 Address after: 830011 No. 901, unit 3, building 1, No. 2219, Xihuan North Road, Xinshi District, Urumqi, Xinjiang Uygur Autonomous Region Patentee after: Liu Junrong Address before: No.2, Beijing North Road, Xinshi District, Urumqi, Xinjiang Uygur Autonomous Region 830011 Patentee before: SINOPEC NORTHWEST OIL FIELD Co. Patentee before: Liu Junrong |
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