CN211598620U - Pressure channel control device - Google Patents
Pressure channel control device Download PDFInfo
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- CN211598620U CN211598620U CN201922455910.XU CN201922455910U CN211598620U CN 211598620 U CN211598620 U CN 211598620U CN 201922455910 U CN201922455910 U CN 201922455910U CN 211598620 U CN211598620 U CN 211598620U
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Abstract
The utility model discloses a pressure channel control device, which comprises a plug, a locking rod, a hole forming component and a sand control rod which are arranged in an outer cylinder from top to bottom in sequence; the hole opening assembly consists of a hole opening inner sleeve, a hole opening middle sleeve and a hole opening outer sleeve which are sequentially sleeved from inside to outside; the plug is arranged at the top of the trepanning outer sleeve, a blind hole is formed in the plug, the locking rod is initially locked at the inner sides of the plug and the trepanning outer sleeve, and an upward distance is reserved between the top end of the locking rod and the bottom of the blind hole; the opening outer sleeve is provided with a plurality of first overcurrent through holes; the opening middle sleeve is sleeved on the lower part of the opening outer sleeve in a gap mode to block all the first overflowing channel holes, an inverted T-shaped lifting rod with the top end fixed at the bottom end of the locking rod is arranged in the opening middle sleeve, and a plurality of third overflowing through holes which are blocked by the opening middle sleeve in an initial state are formed in the opening inner sleeve; the pressure channel control device can independently control pressure conduction and has sand prevention function, and the overflowing channel is opened under accurate pressure control.
Description
Technical Field
The utility model relates to a perforation operation technical field in the pit, in particular to pressure channel controlling means.
Background
In oil exploration and development, perforation is a key link in the well completion process. At present, the most widely applied method is to adopt a shaped perforator, perforate a casing and a well cementation cement sheath to communicate a shaft and an original stratum for subsequent production. In the oil pipe transmission perforation operation, the timely opening of the pressurizing channel is controlled in a pressurizing and shearing mode, so that a key effect is achieved on whether the perforation operation can be smoothly completed.
The existing pressure channel control device is basically integrated with an ignition and initiation device, a firing pin presses against an initiator while shearing a pin, and the whole body simultaneously realizes pressurization shearing and initiation; however, for the secondary meshing perforation, the meshing deployment device needs an independent pressure control device to transmit pressure downwards, and a sand control structure for preventing the pressure transmission component from being buried by the formation sand after the primary perforation is required, so that the existing pressure channel control device is not suitable for the secondary meshing perforation operation, and therefore, a new pressure control device needs to be provided to realize the independent pressure transmission downwards as the independent pressure control device for the secondary meshing perforation operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pressure channel controlling means of passageway switching state in can independent and accurate control tubular column.
Therefore, the utility model discloses technical scheme as follows:
a pressure channel control device comprises a plug, a locking rod, a hole opening assembly and a sand control rod which are sequentially arranged in an outer barrel from top to bottom; the tapping component consists of a tapping inner sleeve, a tapping middle sleeve and a tapping outer sleeve which are sequentially sleeved from inside to outside, and a lifting rod arranged on the tapping middle sleeve; wherein the content of the first and second substances,
the plug is provided with a blind hole which is upwards arranged from the bottom surface of the plug along the axial direction, and a pin sleeve is fixed on the inner wall of the blind hole, so that the top end of the locking rod is fixed on the pin sleeve through a plurality of pins which are uniformly distributed along the circumferential direction; an upward distance is reserved from the top end of the locking rod to the bottom of the blind hole;
the perforated outer sleeve is of a cylindrical structure, the inner diameter of the upper part of the perforated outer sleeve is smaller than that of the lower part of the perforated outer sleeve, and a plurality of first overflowing through holes are formed in the side wall of the lower part of the perforated outer sleeve along the circumferential direction; the upper part of the trepanning outer sleeve is sleeved on the outer side of the lower part of the locking rod, and the top end of the trepanning outer sleeve is fixed on the inner wall of the bottom end of the plug;
the perforated middle sleeve is of a cylinder structure and is sleeved on the lower part of the perforated outer sleeve in a manner of having a gap, so that the side wall of the lower part of the perforated middle sleeve is plugged in a plurality of first overflowing channel holes of the perforated inner sleeve; the inner diameter of the top opening of the perforated middle sleeve is smaller than the inner diameter of the cylinder body and is adaptive to the outer diameter of the lifting rod, so that the inverted T-shaped lifting rod is inserted into the top opening of the perforated middle sleeve from the lower part of the perforated middle sleeve, and the end head of the inverted T-shaped lifting rod is limited in the perforated middle sleeve; the top end of the lifting rod is fixed at the bottom end of the locking rod and keeps the bottom of the locking rod to be provided with a pressure-bearing end surface;
the inner sleeve with the opening is of a cylinder structure, the upper part of the inner sleeve is sleeved on the inner side of the lower part of the middle sleeve with the opening, and the lower part of the inner sleeve with the opening is fixed on the inner wall of the outer sleeve with the opening; a plurality of third overflowing through holes are formed in the side wall of the upper part of the perforated inner sleeve along the circumferential direction, and the third overflowing through holes are respectively formed in positions corresponding to the first overflowing through holes one by one; the bottom end of the perforated inner sleeve is in threaded connection with the top end of the sand prevention rod.
Furthermore, a plurality of second overflowing through holes are formed in the side wall of the top end of the opening middle sleeve along the circumferential direction, and the second overflowing through holes are communicated with a space formed between the opening middle sleeve and the opening inner sleeve.
Furthermore, a plurality of shearing pins are uniformly distributed between the perforated middle sleeve and the perforated inner sleeve along the circumferential direction, so that the perforated middle sleeve and the perforated inner sleeve are fixedly connected; a plurality of fastening screws are uniformly distributed between the trepanning outer sleeve and the trepanning inner sleeve along the circumferential direction, so that the trepanning outer sleeve is fixedly connected with the trepanning inner sleeve.
Further, the plug is in threaded sealing connection with the perforated outer sleeve; the perforated inner sleeve is in threaded sealing connection with the sand control rod.
Furthermore, the outer diameter of the locking rod is smaller than the inner diameter of the opening outer sleeve, and the bottom end of the locking rod is provided with an annular boss with the outer diameter consistent with the inner diameter of the opening outer sleeve; a plurality of annular grooves provided with sealing rings are arranged on the annular boss at intervals from top to bottom, so that sealing is formed between the bottom end of the locking rod and the perforated outer sleeve.
Furthermore, the outer walls of the perforated inner sleeves positioned at two sides of the third overflowing through hole are respectively provided with a sealing ring, so that sealing is formed between the perforated inner sleeves and the perforated middle sleeve.
Furthermore, a plurality of sealing rings are arranged on the outer wall of the top end of the sand prevention rod, so that sealing is formed between the sand prevention rod and the perforated inner sleeve.
Furthermore, a plurality of sealing rings are arranged on the outer wall of the top end of the hole-opening outer sleeve, so that sealing is formed between the plug and the hole-opening outer sleeve.
Furthermore, the top end of the outer cylinder is in threaded connection with an upper joint, and a sealing ring is arranged between the outer cylinder and the upper joint, so that the outer cylinder and the upper joint form threaded sealing connection.
Further, a lower joint is in threaded connection with the bottom end of the outer cylinder, and a sealing ring is arranged between the outer cylinder and the lower joint to enable the outer cylinder and the lower joint to form threaded sealing connection; the bottom end of the sand prevention rod is sleeved on the inner side of the top end of the lower joint and is in threaded connection with the lower joint, and a sealing ring is further arranged between the sand prevention rod and the lower joint to enable the sand prevention rod and the lower joint to form threaded sealing connection.
Compared with the prior art, the pressure channel control device has the advantages of simple structure and reasonable design, can overcome the defects that the existing pressure through hole control device cannot independently control the pressure conduction of special equipment and has no sand prevention function, realizes the opening of the overflowing channel under the accurate pressure control, meets the operation requirement of perforating operation, and simultaneously has the function of preventing sand setting.
Drawings
Fig. 1 is a schematic structural diagram of the pressure channel control device of the present invention.
Detailed Description
The present invention will be further described with reference to the following drawings and specific examples, but the following examples are by no means limiting the present invention.
As shown in fig. 1, the pressure channel control device comprises a plug 4, a locking rod 9, a hole assembly and a sand control rod 16 which are arranged in the outer cylinder 3 from top to bottom in sequence.
The top end of the outer cylinder 3 is connected with an upper joint 1 in a threaded manner, and a sealing ring is arranged at the joint of the outer cylinder 3 and the upper joint 1, so that the outer cylinder and the upper joint form threaded sealing connection.
The plug 4 is of a cylindrical structure, and is provided with a blind hole upwards from the bottom surface along the axial direction; the inner diameter of the blind hole is gradually increased from top to bottom to form a first annular step and a second annular step; the pin sleeve 5 is arranged in the blind hole, and the top end of the pin sleeve is abutted against the lower end face of the first annular step.
The locking rod 9 is a cylindrical rod, the top end of the locking rod is arranged in the pin sleeve 5, and the locking rod is fixed on the pin sleeve 5 through an upper pin group 6 and a lower pin group 7 which are arranged at intervals; in particular, the amount of the solvent to be used,
the upper pin group 6 is provided with 18 shearing pins phi 3 which are uniformly distributed along the circumferential direction, the lower pin group 7 is provided with 8 shearing pins phi 1.5 which are uniformly distributed along the circumferential direction, and the accurate shearing pressure setting between the locking rod 9 and the pin sleeve 5 is realized; meanwhile, an upward distance is reserved from the top end of the locking rod 9 to the bottom of the blind hole;
the outer diameter of the locking rod 9 is smaller than the inner diameter of the perforated outer sleeve 10, and the bottom end of the locking rod 9 is provided with an annular boss with the outer diameter consistent with the inner diameter of the perforated outer sleeve 10; three annular grooves with sealing rings 19 are arranged on the annular boss at intervals from top to bottom, so that sealing is formed between the bottom end of the locking rod 9 and the perforated outer sleeve 10.
The tapping component consists of a tapping inner sleeve 14, a tapping middle sleeve 12 and a tapping outer sleeve 10 which are sleeved from inside to outside in sequence, and a lifting rod 11 arranged on the tapping middle sleeve 12; in particular, the amount of the solvent to be used,
the trepanning outer sleeve 10 is of a cylinder structure, the inner diameter of the upper portion of the trepanning outer sleeve is smaller than that of the lower portion of the trepanning outer sleeve, and 3-6 first overflowing through holes are formed in the side wall of the lower portion of the trepanning outer sleeve along the circumferential direction; the upper part of the trepanning outer sleeve 10 is sleeved on the outer side of the lower part of the locking rod 9, the top end of the trepanning outer sleeve is in threaded connection with the inner wall of the bottom end of the plug 4, and three sealing rings 8 are arranged between the plug 4 and the trepanning outer sleeve 10, so that threaded sealing connection is formed between the plug 4 and the trepanning outer sleeve 10;
the opening middle sleeve 12 is of a cylindrical structure and is sleeved at the lower part of the opening outer sleeve 10 in a gap mode, so that the side wall of the lower part of the opening middle sleeve is plugged at a plurality of first through-flow channels of the opening inner sleeve 14, and meanwhile, a first space is defined between the opening middle sleeve 12 and the opening outer sleeve 10; the inner diameter of the top opening of the perforated middle sleeve 12 is smaller than the inner diameter of the cylinder body and is adaptive to the outer diameter of the lifting rod 11, so that the inverted T-shaped lifting rod 11 is inserted into the top opening of the perforated middle sleeve 12 from the lower part of the perforated middle sleeve 12, and the end head of the inverted T-shaped lifting rod is limited in the perforated middle sleeve 12; the top end of the lifting rod 11 is fixed at the bottom end of the locking rod 9 and keeps the bottom of the locking rod 9 with a pressure-bearing end surface;
the inner perforated sleeve 14 is of a cylindrical structure, the upper part of the inner perforated sleeve is sleeved on the inner side of the lower part of the middle perforated sleeve 12, and the lower part of the inner perforated sleeve is fixed on the inner wall of the outer perforated sleeve 10, so that a second space is enclosed between the middle perforated sleeve 12 and the inner perforated sleeve 14; 3-6 third overflowing through holes are formed in the side wall of the upper portion of the perforated inner sleeve 14 along the circumferential direction, and the third overflowing through holes are respectively formed in positions corresponding to the first overflowing through holes in a one-to-one mode; in an initial state, all the third through holes are plugged by the lower side wall of the perforated middle sleeve 12;
in addition, 3-6 second overflowing through holes are formed in the side wall of the top end of the perforated middle sleeve 12 in the circumferential direction, and each second overflowing through hole is communicated with a second space formed between the perforated middle sleeve 12 and the perforated inner sleeve 14, so that balance of internal and external pressures of the perforated assembly is achieved.
In order to ensure the sealing performance between the perforated assemblies, an upper sealing ring 20 and a lower sealing ring 21 are respectively arranged on the outer wall of the perforated inner sleeve 14 positioned at two sides of the third overflowing through hole, so that the perforated inner sleeve 14 and the perforated middle sleeve 12 form sealing.
In addition, in order to avoid relative rotation among the perforated outer sleeve 10, the perforated middle sleeve 12 and the perforated inner sleeve 14, a plurality of shear pins 13 are uniformly distributed between the perforated middle sleeve 12 and the perforated inner sleeve 14 along the circumferential direction, so that the perforated middle sleeve 12 and the perforated inner sleeve 14 are fixedly connected; a plurality of fastening screws 15 are uniformly distributed between the outer perforated sleeve 10 and the inner perforated sleeve 14 along the circumferential direction, so that the outer perforated sleeve 10 and the inner perforated sleeve 14 are fixedly connected.
The top end of the sand control rod 16 is in threaded connection with the bottom end of the inner perforated sleeve 14, and three sealing rings 22 are arranged on the outer wall of the top end of the sand control rod 16, so that sealing is formed between the sand control rod 16 and the inner perforated sleeve 14.
The bottom end of the outer cylinder 3 is in threaded connection with a lower joint 18, and a sealing ring is arranged between the outer cylinder 3 and the lower joint 18 to form threaded sealing connection; the top end of the lower joint 18 is in threaded connection with the bottom end of the sand control rod 16, and three sealing rings 23 are arranged between the sand control rod 16 and the lower joint 18 to form threaded sealing connection; the inner diameter of the central through hole of the lower joint 18 is consistent with the inner diameter of the central through hole of the sand control rod 16.
The working principle of the pressure channel control device is as follows: when a pressure channel needs to be opened, the hydraulic pressure of liquid entering the outer cylinder is increased, so that the liquid entering the perforated outer sleeve 10 from the plurality of first overflowing through holes enters the first space and the second space from gaps between the perforated outer sleeve 10 and the perforated middle sleeve 12, the pressure-bearing end face is reserved at the bottom of the locking rod 9, the hydraulic pressure can act on the end face of the bottom end of the locking rod 9 to push the locking rod to move upwards, when the hydraulic pressure is increased to the sum of the shearing pressures of the upper pin group 6 and the lower pin group 7, all shearing pins of the upper pin group 6 and the lower pin group 7 are sheared, and the locking rod 9 moves upwards to the bottom of a blind hole of the plug 4 along the axial direction by disengaging from the locking action of the pin sleeve 5; because the locking rod 9 is connected with the perforated middle sleeve 12 through the lifting rod 11, the shearing pin 13 is sheared, the perforated middle sleeve 12 synchronously moves upwards, so that the third overflowing through hole is not blocked by the side wall of the perforated middle sleeve 12 any more, at the moment, liquid flowing in from a plurality of first overflowing through holes enters the inner side of the perforated inner sleeve 14 and flows into a lower pipe column through the inner cavity of the sand control rod 16 communicated with the inner cavity of the perforated inner sleeve 14 and the inner cavity of the lower connector 18, and the opening of a pressure channel is realized.
Claims (10)
1. A pressure channel control device is characterized by comprising a plug (4), a locking rod (9), a hole opening assembly and a sand control rod (16) which are sequentially arranged in an outer barrel (3) from top to bottom; the tapping component consists of a tapping inner sleeve (14), a tapping middle sleeve (12) and a tapping outer sleeve (10) which are sleeved from inside to outside in sequence, and a lifting rod (11) arranged on the tapping middle sleeve (12); wherein the content of the first and second substances,
the plug (4) is provided with a blind hole which is upwards formed from the bottom surface of the plug along the axial direction, and a pin sleeve (5) is fixed on the inner wall of the blind hole, so that the top end of the locking rod (9) is fixed on the pin sleeve (5) through a plurality of pins which are uniformly distributed along the circumferential direction; an upward distance is reserved from the top end of the locking rod (9) to the bottom of the blind hole;
the hole-opening outer sleeve (10) is of a cylinder structure, the inner diameter of the upper part of the hole-opening outer sleeve is smaller than that of the lower part of the hole-opening outer sleeve, and a plurality of first overflowing through holes are formed in the side wall of the lower part of the hole-opening outer sleeve along the circumferential direction; the upper part of the trepanning outer sleeve (10) is sleeved on the outer side of the lower part of the locking rod (9), and the top end of the trepanning outer sleeve is fixed on the inner wall of the bottom end of the plug (4);
the perforated middle sleeve (12) is of a cylinder structure and is sleeved at the lower part of the perforated outer sleeve (10) in a manner of having a gap, so that the side wall of the lower part of the perforated middle sleeve is plugged in a plurality of first overflowing channel holes of the perforated inner sleeve (14); the inner diameter of the top opening of the perforated middle sleeve (12) is smaller than the inner diameter of the cylinder body and is adaptive to the outer diameter of the lifting rod (11), so that the inverted T-shaped lifting rod (11) is inserted into the top opening of the perforated middle sleeve (12) from the lower part of the perforated middle sleeve (12), and the end head of the inverted T-shaped lifting rod is limited in the perforated middle sleeve (12); the top end of the lifting rod (11) is fixed at the bottom end of the locking rod (9) and keeps the bottom of the locking rod (9) to leave a pressure-bearing end surface;
the inner perforated sleeve (14) is of a cylinder structure, the upper part of the inner perforated sleeve is sleeved on the inner side of the lower part of the middle perforated sleeve (12), and the lower part of the inner perforated sleeve is fixed on the inner wall of the outer perforated sleeve (10); a plurality of third overflowing through holes are formed in the circumferential direction on the side wall of the upper part of the perforated inner sleeve (14), and the third overflowing through holes are respectively formed in positions corresponding to the first overflowing through holes one by one; the bottom end of the perforated inner sleeve (14) is connected with the top end of the sand control rod (16) in a threaded manner.
2. The pressure channel control device as claimed in claim 1, wherein a plurality of second through-flow holes are formed in a circumferential direction in a top end side wall of the perforated intermediate sleeve (12), and the plurality of second through-flow holes are communicated with a space formed between the perforated intermediate sleeve (12) and the perforated inner sleeve (14).
3. The pressure channel control device according to claim 1, wherein a plurality of shear pins (13) are uniformly arranged between the perforated middle sleeve (12) and the perforated inner sleeve (14) along the circumferential direction, so that the perforated middle sleeve (12) and the perforated inner sleeve (14) are fixedly connected; a plurality of fastening screws (15) are uniformly distributed between the outer perforated sleeve (10) and the inner perforated sleeve (14) along the circumferential direction, so that the outer perforated sleeve (10) is fixedly connected with the inner perforated sleeve (14).
4. The pressure channel control device according to claim 1, characterized in that the plug (4) is in threaded sealing connection with the perforated outer sleeve (10); the inner sleeve (14) with the opening is in threaded sealing connection with the sand control rod.
5. The pressure channel control device as claimed in claim 1, wherein the outer diameter of the locking rod (9) is smaller than the inner diameter of the perforated outer sleeve (10), and the bottom end of the locking rod (9) is provided with an annular boss having an outer diameter identical to the inner diameter of the perforated outer sleeve (10); a plurality of annular grooves provided with sealing rings are arranged on the annular boss at intervals from top to bottom, so that sealing is formed between the bottom end of the locking rod (9) and the perforated outer sleeve (10).
6. The pressure channel control device according to claim 1, wherein a sealing ring is provided on the outer wall of the inner perforated sleeve (14) on both sides of the third flow passage hole, so that a seal is formed between the inner perforated sleeve (14) and the intermediate perforated sleeve (12).
7. The pressure channel control device as claimed in claim 1, wherein a plurality of sealing rings are provided on the outer wall of the top end of the sand control rod (16) to seal the sand control rod (16) with the perforated inner sleeve (14).
8. The pressure channel control device as claimed in claim 1, wherein a plurality of sealing rings are provided on the outer wall of the top end of the perforated outer casing (10) to seal the plug (4) with the perforated outer casing (10).
9. The pressure channel control device according to claim 1, wherein the top end of the outer cylinder (3) is connected with the upper joint (1) in a threaded manner, and a sealing ring is arranged between the outer cylinder (3) and the upper joint (1) so as to form a threaded sealing connection.
10. The pressure channel control device according to claim 1, characterized in that a lower joint (18) is connected with the bottom end of the outer cylinder (3) in a threaded manner, and a sealing ring is arranged between the outer cylinder (3) and the lower joint (18) to form a threaded sealing connection; the bottom end of the sand control rod (16) is sleeved on the inner side of the top end of the lower joint (18) and is in threaded connection with the lower joint (18), and a sealing ring is further arranged between the sand control rod (16) and the lower joint (18) to enable the sand control rod and the lower joint to form threaded sealing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922455910.XU CN211598620U (en) | 2019-12-31 | 2019-12-31 | Pressure channel control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922455910.XU CN211598620U (en) | 2019-12-31 | 2019-12-31 | Pressure channel control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211598620U true CN211598620U (en) | 2020-09-29 |
Family
ID=72598402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922455910.XU Active CN211598620U (en) | 2019-12-31 | 2019-12-31 | Pressure channel control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211598620U (en) |
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2019
- 2019-12-31 CN CN201922455910.XU patent/CN211598620U/en active Active
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