CN212389303U - Seal and separate big ring empty blowout seal and press integration instrument - Google Patents
Seal and separate big ring empty blowout seal and press integration instrument Download PDFInfo
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- CN212389303U CN212389303U CN202020231578.9U CN202020231578U CN212389303U CN 212389303 U CN212389303 U CN 212389303U CN 202020231578 U CN202020231578 U CN 202020231578U CN 212389303 U CN212389303 U CN 212389303U
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- 230000010354 integration Effects 0.000 title abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 104
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000012856 packing Methods 0.000 claims description 27
- 238000003825 pressing Methods 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 10
- 230000001012 protector Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 abstract description 4
- 238000005422 blasting Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model provides a seal and separate big annular air blasting seal and press integration instrument, the top connection cover is established on the pressure differential endotheca, and the nozzle is located between top connection and the urceolus, and the urceolus cover is established on the inner tube. One end of the inner cylinder is matched with the end part of the differential pressure inner sleeve, the other end of the inner cylinder is provided with an inner rubber cylinder, and two ends of the center rod are respectively connected with the outer cylinder and the lower joint. The push-pull component is respectively connected with the outer cylinder, the inner cylinder and the central rod and can move along the axial direction. The sealing rubber cylinder is sleeved on the outer wall of the central rod and located between the push-pull component and the lower joint, and a sealing protection component is arranged on the outer side face of the sealing rubber cylinder. The upper joint is provided with a fracturing channel, and the pressure difference inner sleeve can move between the positions of closing and opening the fracturing channel along the axial direction. The inner cylinder is provided with a liquid transfer passage therein, and the inner cylinder is movable in the axial direction between positions for closing and opening the nozzle and the liquid transfer passage. The sealing ball is arranged in a key which can form a fit with the inner wall of the inner cylinder.
Description
Technical Field
The utility model belongs to the technical field of oil and gas well completion and reservoir transformation, concretely relates to seal and separate big ring empty blowout seal pressure integration instrument.
Background
In the oil and gas exploitation operation, the perforation is needed to be carried out firstly in the common well completion construction, then the fracturing string is put to a specified position, and after the packer is set, the fracturing sliding sleeve is opened step by step to carry out the fracturing construction. In the prior art, although a device capable of integrating the functions of injection, fracturing and packing is provided, the high requirement of large-discharge annular injection construction conditions on large annular sealing cannot be met due to the conventional sealing structure.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome prior art not enough, provide one kind and can satisfy under the large discharge annulus injection construction condition to the sealed big annular space of packing of big annular space requirement spout the seal and press integration instrument.
In order to solve the technical problem, the utility model provides a technical scheme does:
a large sealing ring air spraying and sealing integrated tool comprises an upper joint, a pressure difference inner sleeve, a nozzle, an outer cylinder, an inner rubber cylinder, a center rod, a push-pull component, a sealing rubber cylinder, a lower joint, a sealing ball and a key. Wherein, the upper joint is sleeved on the pressure difference inner sleeve, the nozzle is positioned between the upper joint and the outer cylinder, and the outer cylinder is sleeved on the inner cylinder. One end of the inner cylinder is matched with the end part of the differential pressure inner sleeve, the other end of the inner cylinder is provided with an inner rubber cylinder, and two ends of the center rod are respectively connected with the outer cylinder and the lower joint. The push-pull component is respectively connected with the outer cylinder, the inner cylinder and the central rod and can move along the axial direction. The sealing rubber cylinder is sleeved on the outer wall of the central rod and located between the push-pull component and the lower joint, and a sealing protection component is arranged on the outer side face of the sealing rubber cylinder. The end part of the upper joint far away from the nozzle is provided with a fracturing channel, and the pressure difference inner sleeve can move between the positions of closing and opening the fracturing channel along the axial direction. A liquid transmission channel is arranged in one end, close to the inner rubber tube, of the inner tube, and the inner tube can move between positions for closing and opening the nozzle and the liquid transmission channel along the axial direction. The sealing ball is arranged in a key which can form a fit with the inner wall of the inner cylinder.
The utility model relates to a seal and separate big ring empty blowout sealing pressure integration instrument and have injection, seal and separate, the fracturing function is in an organic whole, adopt unlimited progression to throw the key and open the mode, when segmentation progression is unrestricted, the inside full latus rectum that can realize of tubular column, inner tube edge axial displacement when throwing the key, expose the nozzle, open the biography liquid passageway simultaneously, rely on nozzle throttle circulation to realize sealing mechanism seat seal, seal and separate the interval of having been under construction, then pour into muddy sand liquid and carry out the perforation, reverse suppress behind the perforation, pressure differential sliding sleeve edge axial displacement under pressure and boosting spring's effect, open the fracturing runner, utilize the oil jacket to carry out the big discharge capacity fracturing to the reservoir simultaneously. Because the sealing protection component is arranged on the sealing rubber cylinder, the combined sealing structure can realize the full expansion and protection of the sealing element, has better sealing effect compared with the conventional rubber cylinder, and is particularly suitable for the effective packing of large annular space.
With respect to the above technical solution, further improvements as described below can be made.
According to the utility model discloses a seal and separate big ring empty spraying seal and press integration instrument, in an preferred embodiment, sealed protection part includes split type shoulder pad and split type back of the body circle, and the lamella body of split type back of the body circle corresponds the setting with the lamella seam of split type shoulder pad. The sealing rubber cylinder comprises a middle rubber cylinder and an end rubber cylinder, and the inner side surface of the end rubber cylinder is matched with the end surface of the middle rubber cylinder. The inner side surface of the split back ring is matched with the outer side surface of the end rubber tube.
The sealing rubber tube adopts the sealing protection component, and the split shoulder pad and the split back ring are adopted, and the split body of the split back ring corresponds to the split seam of the split shoulder pad, so that the sealing rubber tube can be greatly expanded, and the sealing rubber tube can be greatly protected. And the inner side surface of the end rubber cylinder in the sealing rubber cylinder is tightly attached to the end surface of the middle rubber cylinder, and the sealing rubber cylinder with the structure can better realize the full expansion and protection of the sealing rubber cylinder under the protection of the sealing protection piece.
Further, in a preferred embodiment, the split shoulder pad and the split back ring and the end rubber sleeve are matched by adopting a wedge-shaped structure.
The sealing protection piece is characterized in that the sealing protection piece is provided with a large-angle wedge structure in a matching contact mode, and the sealing protection piece can further ensure that the sealing rubber cylinder is fully expanded and protected, so that the sealing performance of the seat seal is improved.
Further, in a preferred embodiment, the middle part of the inner wall of the middle rubber cylinder is provided with an inner supporting ring.
Through setting up the support ring, can further ensure at the setting in-process, thereby further ensure to improve the sealing reliability of large annular space in the close contact between packing element and the seal protection spare.
Specifically, in a preferred embodiment, the push-pull component comprises a hydraulic cylinder outer cylinder, a piston and a piston push rod. The piston is arranged between the inner side of the outer cylinder of the hydraulic cylinder and the inner cylinder, one end, far away from the inner cylinder, of the piston is connected with the piston push rod, and one end, far away from the piston, of the piston push rod is connected with the central rod. A starting pin is arranged between the outer cylinder of the hydraulic cylinder and the piston.
The push-pull component with the structure is convenient to move and effectively extrudes the sealing rubber cylinder and the sealing protection component, so that the sealing rubber cylinder deforms under the action of extrusion force and fails to cling to the inner wall of the sleeve, and effective packing suitable for large annular space is further ensured.
Specifically, in a preferred embodiment, the nozzle is mounted through a nozzle sleeve, one end of which is connected to the upper joint, and the other end of which is connected to the outer cylinder.
The nozzle is fixed through the nozzle sleeve, so that the whole structure of the spray sealing and pressing integrated tool is stable and reliable, and the sealing performance of the whole tool is convenient to realize.
Further, in a preferred embodiment, one end of the differential pressure inner sleeve, which is close to the nozzle sleeve, is provided with a ratchet ring, and the inner wall of the nozzle sleeve is provided with ratchet teeth which are matched with the ratchet ring.
The ratchet ring is meshed with the ratchet on the nozzle sleeve to prevent the pressure difference inner sleeve from being closed accidentally, so that the reliability of the whole spray-seal-pressure integrated tool is further improved.
Further, in a preferred embodiment, a pre-compressed spring is provided between the differential pressure inner sleeve and the upper joint.
The pre-compression spring is arranged on the pressure difference inner sleeve, so that the pressure difference inner sleeve can be ensured to be completely opened, and the fracturing channel can be opened more easily.
Further, in a preferred embodiment, a ratchet ring is provided on the center rod.
Through the ratchet meshing of the ratchet ring and the ratchet on the piston, the function of stopping after compressing the rubber cylinder can be effectively played.
Specifically, in a preferred embodiment, a baffle ring for fixing the inner rubber cylinder is arranged at the end part, close to the inner rubber cylinder, of the inner rubber cylinder, and the baffle ring can seal a liquid inlet part of the liquid conveying channel. One end of the inner cylinder close to the inner rubber cylinder is provided with a check ring.
The installation and positioning of the inner rubber cylinder can be stable and reliable through the arrangement of the baffle ring, and in addition, the reliability of the whole spraying, sealing and pressing integrated tool in the setting process can be ensured. Fluid pressure balance can be realized by arranging the retainer ring, and the compression effect of the inner rubber sleeve is reduced.
Compared with the prior art, the utility model has the advantages of: and the seat sealing is reliable when a large annular space is sealed.
Drawings
The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 schematically shows the overall structure of the air-jet sealing-pressing integrated tool for the packing large ring according to the embodiment of the present invention;
fig. 2 to 4 schematically show the working state of the packing large ring air-jet packing-pressing integrated tool according to the embodiment of the present invention;
fig. 5 schematically shows a front view structure of the split shoulder pad according to the embodiment of the present invention;
fig. 6 schematically shows a front view structure of a split-type back ring according to an embodiment of the present invention;
fig. 7 schematically shows the mounting state of the seal protector 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.
Detailed Description
The invention will be described in further detail with reference to the drawings and specific examples, without thereby limiting the scope of the invention.
Fig. 1 schematically shows the overall structure of a packing large ring air-jet packing and pressing integrated tool 10 according to an embodiment of the present invention. Fig. 2 to fig. 4 schematically show the working state of the packing large ring air-jet packing integrated tool 10 according to the embodiment of the present invention. Fig. 5 schematically shows a front view structure of the split shoulder pad 1041 according to an embodiment of the present invention. Fig. 6 schematically shows a front view structure of a split back ring 1042 of the embodiment of the present invention. Fig. 7 schematically illustrates the installation of the seal protector 104 according to an embodiment of the present invention.
As shown in fig. 1, the large annular sealing-space spraying and sealing-pressing integrated tool 10 according to the embodiment of the present invention includes an upper joint 1, a pressure difference inner sleeve 2, a nozzle 3, an outer cylinder 4, an inner cylinder 5, an inner rubber cylinder 6, a central rod 7, a push-pull component 8, a sealing rubber cylinder 9, a lower joint 101, a sealing ball 102, and a key 103. Wherein, the upper joint 1 is sleeved on the pressure difference inner sleeve 2, the nozzle 3 is positioned between the upper joint 1 and the outer cylinder 4, and the outer cylinder 4 is sleeved on the inner cylinder 5. One end of the inner cylinder 5 is matched with the end part of the differential pressure inner sleeve 1, the other end of the inner cylinder 5 is provided with an inner rubber cylinder 6, and two ends of the central rod 7 are respectively connected with the outer cylinder 4 and the lower joint 101. The push-pull component 8 is respectively connected with the outer cylinder 4, the inner cylinder 5 and the central rod 7, and the push-pull component 8 can move along the axial direction. The sealing rubber cylinder 9 is sleeved on the outer wall of the central rod 7, the sealing rubber cylinder 9 is positioned between the push-pull component 8 and the lower joint 101, and the outer side surface of the sealing rubber cylinder 9 is provided with a sealing protection component 104. The end of the upper joint 1 far away from the nozzle 3 is provided with a fracturing channel 11, and the differential pressure inner sleeve 2 can move between the positions of closing and opening the fracturing channel 11 along the axial direction. A liquid transfer passage 51 is provided inside one end of the inner cylinder 5 adjacent to the inner glue cylinder 6, and the inner cylinder 5 is movable in the axial direction between positions closing and opening the nozzle 3 and the liquid transfer passage 51. The sealing ball 102 is arranged within a key 103, the key 103 being capable of selectively mating with a groove on the inner wall of the inner barrel 5.
According to the utility model discloses seal and separate big ring empty blowout sealing pressure integration instrument of ring and have injection, seal and separate, the fracturing function is in an organic whole, adopt and not limit the progression and throw the key opening mode, when segmentation progression is unrestricted, the inside full latus rectum that can realize of tubular column, inner tube edge axial displacement when throwing the key, expose the nozzle, open the biography liquid passageway simultaneously, rely on nozzle throttle circulation to realize sealing mechanism seat seal, seal and separate the interval of having been under construction, then pour into muddy sand liquid and carry out the perforation, reverse pressure after the perforation, pressure differential sliding sleeve edge axial displacement under the effect of pressure and boosting spring, open the fracturing runner, utilize the oil jacket to carry out the big discharge capacity fracturing to the reservoir simultaneously. Because the sealing protection component is arranged on the sealing rubber cylinder, the combined sealing structure can realize the full expansion and protection of the sealing element, has better sealing effect compared with the conventional rubber cylinder, and is particularly suitable for the effective packing of large annular space.
Specifically, as shown in fig. 1, in the present embodiment, both ends of the upper joint 1 are connected to the pipe string and the nozzle casing 105, respectively, by means of screw connection. The upper joint 1 is provided with a balance hole 107 at a position close to the fracturing channel 11. The balance hole can balance the pressure between the boosting spring accommodating cavity and the outside, so that a closed dead cavity is avoided. One end of the differential pressure inner sleeve 2 is tightly abutted to the inner shoulder of the upper joint 1, a boss is arranged on the outer wall of the differential pressure inner sleeve 2, and the boss and the upper joint 1 are pre-fixed through a differential pressure shear pin 111. A precompressed spring 21 is arranged between the shoulder of the differential pressure inner sleeve 2 and the annular space of the upper joint 1. The differential pressure inner sleeve 2 is provided with a plurality of sealing rings 108 and balance holes 107. The end of the differential pressure inner sleeve 2 close to the nozzle sleeve 105 is provided with an annular groove for arranging a ratchet ring 106. The inner cylinder 5 and the outer cylinder 4 are pre-fixed through a sliding sleeve shear pin 110, the end part of the inner cylinder 5 is tightly abutted against the end part of the differential pressure inner sleeve 2, and the inner cylinder 5 is connected with the retainer ring 53 in a threaded connection mode.
As shown in fig. 1 to 7, in the present embodiment, the sealing protection component 104 includes a split shoulder guard 1041 and a split back ring 1042, and the split body of the split back ring 1042 is disposed corresponding to the split seam of the split shoulder guard 1041. The sealing rubber cylinder 9 comprises a middle rubber cylinder 91 and an end rubber cylinder 92, and the inner side surface of the end rubber cylinder 92 is matched with the end surface of the middle rubber cylinder 91. The inner side of the split back ring 1042 is matched with the outer side of the end rubber tube 92. The sealing rubber tube adopts the sealing protection component, and the split shoulder pad and the split back ring are adopted, and the split body of the split back ring corresponds to the split seam of the split shoulder pad, so that the sealing rubber tube can be greatly expanded, and the sealing rubber tube can be greatly protected. And the inner side surface of the end rubber cylinder in the sealing rubber cylinder is tightly attached to the end surface of the middle rubber cylinder, and the sealing rubber cylinder with the structure can better realize the full expansion and protection of the sealing rubber cylinder under the protection of the sealing protection piece. Further, in this embodiment, the split shoulder guard 1041 and the split back ring 1042 and the end rubber tube 92 are all formed and matched by adopting a wedge structure. The sealing protection piece is characterized in that the sealing protection piece is provided with a large-angle wedge structure in a matching contact mode, and the sealing protection piece can further ensure that the sealing rubber cylinder is fully expanded and protected, so that the sealing performance of the seat seal is improved. Preferably, in this embodiment, the middle part of the inner wall of the middle rubber cylinder 91 is provided with an inner support ring 93. Through setting up the support ring, can further ensure at the setting in-process, thereby further ensure to improve the sealing reliability of large annular space in the close contact between packing element and the seal protection spare. Preferably, a sealing ring 108 is provided inside the support ring 93. Specifically, the split shoulder guard 1041, the split back ring 1042, the inner support ring 93, the seal ring 108, the middle rubber cylinder 91 and the end rubber cylinder 92 are slidably disposed on the outer wall of the middle rod 7, and are limited by the piston push rod 83 and two ends of the lower joint 101.
As shown in fig. 1, specifically, in the present embodiment, the push-pull member 8 includes a cylinder outer 81, a piston 82, and a piston push rod 83. Wherein, the outer cylinder 81 of the hydraulic cylinder is connected with the outer cylinder 4, the piston 82 is arranged between the inner side of the outer cylinder 81 of the hydraulic cylinder and the inner cylinder 5, one end of the piston 82 far away from the inner cylinder 5 is connected with the piston push rod 83 in a threaded connection mode, and one end of the piston push rod 83 far away from the piston 82 is connected with the central rod 7. An actuating pin 84 is arranged between the cylinder outer cylinder 81 and the piston 82. The push-pull component with the structure is convenient to move and effectively extrudes the sealing rubber cylinder and the sealing protection component, so that the sealing rubber cylinder deforms under the action of extrusion force and fails to cling to the inner wall of the sleeve, and effective packing suitable for large annular space is further ensured.
Specifically, in the present embodiment, the end portion of the outer cylinder 9 near the center rod is provided with a double shoulder, the outer shoulder is connected to the hydraulic cylinder outer cylinder 81 through a screw, the inner shoulder is connected to the center rod 7 through a screw, and the piston 82 is provided between the inside of the hydraulic cylinder outer cylinder 81 and the outside of the inner shoulder at the end portion of the inner cylinder 5.
Specifically, as shown in fig. 1, in the present embodiment, the nozzle 3 is installed through the nozzle sleeve 105, one end of the nozzle sleeve 105 is connected to the upper joint 1, and the other end of the nozzle sleeve 105 is connected to the outer cylinder 4. Specifically, at least one nozzle 3 is arranged on the nozzle sleeve 105, a sealing ring 108 is arranged between the nozzle 3 and the nozzle sleeve 105, and at least two sealing rings 108 are arranged on the nozzle sleeve 105. The nozzle sleeve 105 is connected with the outer cylinder 4 in a threaded connection mode, the inner cylinder 5 is positioned on the inner sides of the outer cylinder 4 and the nozzle sleeve 105, and at least two sealing rings 108 are arranged on the outer wall of the inner cylinder 5, so that internal and external sealing is realized. The nozzle is fixed through the nozzle sleeve, so that the whole structure of the spray sealing and pressing integrated tool is stable and reliable, and the sealing performance of the whole tool is convenient to realize. Further, in the present embodiment, a ratchet ring 106 is disposed at one end of the differential pressure inner sleeve 2 close to the nozzle sleeve 105, and ratchet teeth engaged with the ratchet ring 106 are disposed on the inner wall of the nozzle sleeve 105. The ratchet ring is meshed with the ratchet on the nozzle sleeve to prevent the pressure difference inner sleeve from being closed accidentally, so that the reliability of the whole spray-seal-pressure integrated tool is further improved. Preferably, in the present embodiment, a pre-compressed spring 21 is provided between the differential pressure inner sleeve 2 and the upper joint 1. The precompression spring is arranged on the pressure difference inner sleeve, so that the pressure difference sliding sleeve can be opened effectively in a sliding manner when annulus is reversely pressed, and the problem that the pressure difference sliding sleeve cannot be opened due to insufficient pressure difference is avoided.
Specifically, in the present embodiment, as shown in fig. 1, a baffle ring 52 for fixing the inner rubber cylinder 6 is disposed at an end portion of the inner cylinder 5 close to the inner rubber cylinder 6, and the baffle ring 52 can close a liquid inlet 54 of the liquid conveying passage 51. A retaining ring 53 is arranged at one end of the inner cylinder 5 close to the inner rubber cylinder 6. The installation and positioning of the inner rubber cylinder can be stable and reliable through the arrangement of the baffle ring, and in addition, the reliability of the whole spraying, sealing and pressing integrated tool in the setting process can be ensured. Through setting up the retaining ring, can realize fluid pressure balance to reduce interior packing element compression effect. Further, in this embodiment, an annular groove is disposed on the center rod 7, and a ratchet ring 106 is disposed in the annular groove. Through the ratchet meshing of the ratchet ring and the ratchet on the piston, the function of stopping after compressing the rubber cylinder can be effectively played. Preferably, the inner cylinder 5 is provided with a C-shaped clamp spring 109. Through setting up C shape jump ring, can play the inner tube and slide the back and avoid because the effect of unexpected upward closing under the pressure effect in the pit.
As shown in fig. 1 to 4, the working process of the packing large annular hole spraying and sealing integrated tool 10 according to the embodiment of the present invention is as follows:
as shown in fig. 1, a plurality of blowout-sealing-and-fracturing integrated tools 10 can be connected in series with a pipe string and an anchoring tool and lowered to a target well site. Firstly, a key 103 matched with the farthest end spraying, sealing and pressing integrated tool 10 is thrown in, after the key 103 is clamped and matched with the spraying, sealing and pressing integrated tool 10, a sliding sleeve shearing pin 110 is sheared under the action of pumping pressure, the inner cylinder 5 is driven to move downwards to a limiting table, and the inner rubber cylinder 6 is compressed to tightly hold the entity of the key 103. On the one hand, after the inner cylinder 5 moves downwards, the flow channels of the nozzles 3 on the nozzle sleeve 105 are exposed to be communicated with the liquid in the pipe column, and fluid injection is started to perform perforation, as shown in fig. 2. On the other hand, the liquid transmission channel 106 is in liquid communication with the interior of the pipe column, the piston 82 is pushed to move under the action of throttling pressure of the nozzle 3, the starting pin 84 is cut off, the piston 82 drives the piston push rod 83 to move together and extrude the assembly of the sealing rubber barrel 9 and the sealing protection component 104, the sealing rubber barrel 9 deforms and expands to cling to the inner wall of the casing under the action of extrusion force, and the split shoulder guard 1041 and the split back ring 1042 are unfolded accordingly, as shown in fig. 3. After the sand blasting perforation operation is finished, annulus is pressed, the differential pressure inner sleeve 2 moves downwards under the action of differential pressure and the assistance of the spring 21 to expose the fracturing channel 11, as shown in figure 4, the construction is switched into the fracturing operation, the fracturing operation can be simultaneously injected into the inside and the outside of the pipe column, and the injection displacement is larger than the single injection displacement in the pipe column.
According to the above embodiment, it is visible, the utility model relates to a seal and separate big annular space and spout the seal and press integration instrument can ensure that the seat seal is reliable when sealing and separating great annular space.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not intended to be limited to the particular embodiments disclosed herein, but rather to include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A sealing large ring air-jetting sealing-pressing integrated tool is characterized by comprising an upper joint, a pressure difference inner sleeve, a nozzle, an outer cylinder, an inner rubber cylinder, a center rod, a push-pull component, a sealing rubber cylinder, a lower joint, a sealing ball and a key; wherein,
the upper joint is sleeved on the pressure difference inner sleeve, the nozzle is positioned between the upper joint and the outer cylinder, and the outer cylinder is sleeved on the inner cylinder;
one end of the inner cylinder is matched with the end part of the differential pressure inner sleeve, the other end of the inner cylinder is provided with an inner rubber cylinder, and two ends of the central rod are respectively connected with the outer cylinder and the lower joint;
the push-pull component is respectively connected with the outer cylinder, the inner cylinder and the central rod and can move along the axial direction;
the sealing rubber cylinder is sleeved on the outer wall of the central rod and positioned between the push-pull component and the lower joint, and a sealing protection component is arranged on the outer side surface of the sealing rubber cylinder;
a fracturing channel is arranged at the end part, far away from the nozzle, of the upper joint, and the differential pressure inner sleeve can move between positions for closing and opening the fracturing channel along the axial direction;
a liquid conveying channel is arranged in one end, close to the inner rubber tube, of the inner tube, and the inner tube can move between positions for closing and opening the nozzle and the liquid conveying channel along the axial direction;
the sealing ball is disposed within the key, which is capable of forming a fit with an inner wall of the inner barrel.
2. The packing large ring air-jet packing-pressing integrated tool as claimed in claim 1, wherein the sealing protection component comprises a split shoulder protector and a split back ring, and the split body of the split back ring is arranged corresponding to the split seam of the split shoulder protector;
the sealing rubber cylinder comprises a middle rubber cylinder and an end rubber cylinder, and the inner side surface of the end rubber cylinder is matched with the end surface of the middle rubber cylinder;
the inner side surface of the split back ring is matched with the outer side surface of the end rubber tube.
3. The packing large ring air-jet packing-press integrated tool as claimed in claim 2, wherein the split shoulder pad and the split back ring and the end rubber cylinder are matched by adopting a wedge structure.
4. The large packing ring air-jet packing and pressing integrated tool as claimed in claim 2 or 3, wherein an inner support ring is arranged in the middle of the inner wall of the middle rubber cylinder.
5. The packing large ring air-jet packing-pressure integrated tool as claimed in any one of claims 1 to 3, wherein the push-pull component comprises a hydraulic cylinder outer cylinder, a piston and a piston push rod; wherein,
the outer cylinder of the hydraulic cylinder is connected with the outer cylinder, the piston is arranged between the inner side of the outer cylinder of the hydraulic cylinder and the inner cylinder, one end of the piston, which is far away from the inner cylinder, is connected with the piston push rod, and one end of the piston push rod, which is far away from the piston, is connected with the central rod;
and a starting pin is arranged between the outer cylinder of the hydraulic cylinder and the piston.
6. The packing large ring air-jet packing-pressure integrated tool as claimed in any one of claims 1 to 3, wherein the nozzle is mounted through a nozzle sleeve, one end of the nozzle sleeve is connected with the upper joint, and the other end of the nozzle sleeve is connected with the outer barrel.
7. The integrated tool for sealing and separating large annular space, spraying, sealing and pressing as claimed in claim 6, wherein a ratchet ring is disposed at one end of the differential pressure inner sleeve close to the nozzle sleeve, and ratchet teeth engaged with the ratchet ring are disposed on the inner wall of the nozzle sleeve.
8. The packing large ring air-jet packing integrated tool as claimed in any one of claims 1 to 3, wherein a pre-compressed spring is provided between the differential pressure inner sleeve and the upper joint.
9. The packing large ring air-jet packing and pressing integrated tool as claimed in any one of claims 1 to 3, wherein a ratchet ring is provided on the center rod.
10. The packing large ring air-spraying and sealing integrated tool as claimed in any one of claims 1 to 3, wherein a baffle ring for fixing the inner rubber cylinder is arranged at the end part of the inner rubber cylinder, which is close to the inner rubber cylinder, and the baffle ring can seal a liquid inlet part of the liquid conveying channel;
and a check ring is arranged at one end of the inner cylinder, which is close to the inner rubber cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020231578.9U CN212389303U (en) | 2020-02-28 | 2020-02-28 | Seal and separate big ring empty blowout seal and press integration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020231578.9U CN212389303U (en) | 2020-02-28 | 2020-02-28 | Seal and separate big ring empty blowout seal and press integration instrument |
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| Publication Number | Publication Date |
|---|---|
| CN212389303U true CN212389303U (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020231578.9U Active CN212389303U (en) | 2020-02-28 | 2020-02-28 | Seal and separate big ring empty blowout seal and press integration instrument |
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| CN (1) | CN212389303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116146543A (en) * | 2022-12-22 | 2023-05-23 | 格罗夫氢能源科技集团有限公司 | Ejector with variable ejection coefficient |
-
2020
- 2020-02-28 CN CN202020231578.9U patent/CN212389303U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116146543A (en) * | 2022-12-22 | 2023-05-23 | 格罗夫氢能源科技集团有限公司 | Ejector with variable ejection coefficient |
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