CN222580544U - Linkage type intelligent tag key for opening intelligent fracturing sliding sleeve - Google Patents
Linkage type intelligent tag key for opening intelligent fracturing sliding sleeve Download PDFInfo
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- CN222580544U CN222580544U CN202421343835.2U CN202421343835U CN222580544U CN 222580544 U CN222580544 U CN 222580544U CN 202421343835 U CN202421343835 U CN 202421343835U CN 222580544 U CN222580544 U CN 222580544U
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Abstract
The utility model relates to the technical field of oilfield development, in particular to a linkage type intelligent tag key for opening an intelligent fracturing sliding sleeve. In order to solve the problems that the operation such as open flow is needed to be carried out by the tubular column when the stratum is reversely spitted, and potential safety hazards exist. The technical scheme is that the intelligent control device comprises a center rod and a shell sleeved and fixedly connected on the center rod, a first cavity and a second cavity are arranged between the shell and the center rod, the second cavity is communicated with the first cavity, a cavity with a lower opening is arranged at the lower part of the center rod, a flow back channel is arranged on the center rod, the flow back channel is communicated with the cavity, a piston push sleeve sleeved on the center rod is arranged in the first cavity, the area of the lower end face of the piston push sleeve is smaller than the area of the upper end face of the piston push sleeve, a control and power supply system is arranged in the second cavity, an electric valve is electrically connected with the control and power supply system, the electric valve is arranged on the shell and is communicated with the second cavity, and the control and power supply system can control the electric valve to open or close the flow back hole so as to control the flow back channel.
Description
Technical Field
The utility model relates to the technical field of oilfield development, in particular to a linkage type intelligent tag key for opening an intelligent fracturing sliding sleeve.
Background
The existing open hole completion staged fracturing technology of the horizontal well is widely applied to the field of compact oil and gas level development, and good effects are achieved. The technology mainly adopts the open hole packer and ball-throwing sliding sleeve to throw balls step by step to open the sliding sleeve for sectional operation, and the sectional level is limited. Due to the influence of the inner diameter size of the ball seat of the sliding sleeve, when a well needs to be repaired after the later yield is reduced, the ball seat needs to be drilled and ground, the cost is high, the risk is high, and the difficulty is brought to the secondary yield improvement.
The staged fracturing technology of the infinite-stage sleeve sliding sleeve is a novel multistage fracturing technology developed in recent years, and the technology is that after the drilling operation is completed, the well cementation sliding sleeve is put in according to the geological layering section requirement of a reservoir. Before fracturing construction, the coiled tubing is used for driving a sliding sleeve opening tool into the bottom of a well, after depth correction and positioning, a packing tool is arranged on the sliding sleeve, an annulus is pressed to push away the sliding sleeve, and then the annulus is fractured. If the sliding sleeve is not successfully opened, the fracturing operation can be performed after sand blasting perforation by using a tool string and a self-contained injection tool. And after the construction of the first layer section is finished, lifting the coiled tubing deblocking packer. The second sliding sleeve construction interval is located and aligned again, the packer is arranged on the sliding sleeve, the sliding sleeve is opened, the previous layer is sealed and isolated, the construction is complicated, the construction cost is high, the pipe column is required to be put forward for carrying out operations such as open-flow when the stratum is spitted reversely, and potential safety hazards exist.
Disclosure of utility model
The utility model provides a linkage type intelligent tag key for opening an intelligent fracturing sliding sleeve, and aims to simplify wellhead blowout operation during stratum return.
The above object is achieved by the following technical scheme:
the utility model provides a coordinated type intelligent label key for opening intelligent fracturing sliding sleeve, including the center pole, and the cover is established and the casing of rigid coupling on the center pole, be equipped with first cavity between casing and the center pole, and with the second cavity of first cavity intercommunication, the lower part of center pole is provided with down open-ended cavity, be provided with on the center pole with the back row passageway of cavity intercommunication, be provided with the piston push sleeve of cover on the center pole in the first cavity, the area of the lower terminal surface of piston push sleeve is less than the area of piston push sleeve up end, the piston push sleeve can slide along the axis of center pole, be provided with control and power supply system in the second cavity, and the motorised valve of being connected with control and power supply system electricity, be provided with the through-hole in the second cavity intercommunication on the casing, control and power supply system can control the motorised valve open or close through-hole.
The center rod comprises an upper rod and a lower rod integrally connected with the lower end of the upper rod, the upper rod and the lower rod are coaxially arranged, the diameter of the upper rod is smaller than that of the lower rod, the cavity of the lower opening is formed in the lower rod, and the flowback channel is formed in the lower rod.
The flow-back channels are circumferentially and uniformly distributed on the lower rod.
The shell comprises an electric cavity outer sleeve detachably connected to the upper side of the upper rod, a pressure cavity outer shell detachably connected to the inside of the lower end of the electric cavity outer sleeve, a push sleeve detachably connected to the upper side of the lower rod, a rear top sleeve detachably connected to the push sleeve, and a fixing seat detachably connected to the inside of the lower end of the rear top sleeve;
The lower end of the pressure cavity shell is expanded, the inner surface of the expanded position of the pressure cavity shell and the outer surface of the central rod form a first cavity, and the piston push sleeve, the lower part of the upper rod and the upper part of the lower rod are all positioned in the first cavity;
When the piston pushing sleeve moves upwards, a distance is generated between the lower end of the piston pushing sleeve and the upper end of the pushing sleeve so as to form an annular channel communicated with the flow-back channel, an opening is formed in the circumferential wall body of the pressure cavity shell, the opening of the pressure cavity shell can be communicated with the annular channel, and when the piston pushing sleeve is higher than the opening of the pressure cavity shell, the flow-back channel is opened.
The linkage type intelligent tag key for opening the intelligent fracturing sliding sleeve has the beneficial effects that:
1. The intelligent label control system adopts a control mode of linkage of the control and power supply system and the electric valve, so that the reaction speed of the intelligent label is improved, and the working stability is improved.
2. The sealing element is abutted between the shoulder part and the rear top sleeve formed at the peripheral expanding part of the push sleeve, so that the seat sealing force and the sealing effect of the sealing element are greatly improved.
3. According to the utility model, the flowback channel is arranged, when the flowback phenomenon occurs, the intelligent label flowback channel is opened to balance the pressure at the lower end and the pressure at the upper end of the intelligent label, so that the smooth proceeding of fracturing operation is ensured, and the fracturing construction efficiency is improved.
Drawings
FIG. 1 is a cross-sectional view of a linked smart tag key for opening a smart fracturing sleeve in accordance with the present utility model;
FIG. 2 is a schematic illustration of the present utility model seated within a fracturing sleeve;
FIG. 3 is a schematic view of the initial state of the present utility model;
FIG. 4 is a schematic diagram of a seat seal according to the present utility model;
FIG. 5 is a schematic view of the opening of the back-off channel according to the present utility model;
The hydraulic fracturing device comprises a central rod A1, an electric cavity outer sleeve A2, a control and power supply system A3, a pressure cavity outer sleeve A4, a split nut A5, a piston push sleeve A6, a push sleeve A7, a sealing element A8, a rear top sleeve A9, a fixing seat A10, an electric valve A11, an opposite-discharging channel A12 and a fracturing sliding sleeve B1.
Detailed Description
A coordinated type intelligent label key for opening intelligent fracturing sliding sleeve, refer to fig. 1, including well core rod A1, well core rod A1 includes the upper boom to and the lower extreme of body coupling upper boom lower extreme, upper boom and lower boom coaxial setting, and the diameter of upper boom is less than the diameter of lower boom, is provided with the cavity of lower shed on the lower boom, is provided with horizontal back row passageway A12 on the lower boom, and back row passageway A12 switches on with the cavity, and back row passageway A12 can circumference evenly distributed on the lower boom.
Further described, an external thread is arranged on the outer periphery of the upper side of the upper rod, an internal thread is arranged on the inner periphery of the upper side of the electric cavity outer sleeve A2, the outer periphery of the upper side of the upper rod is connected with the inner periphery of the upper side of the electric cavity outer sleeve A2 through thread fit, an internal thread is arranged on the inner periphery of the lower end of the electric cavity outer sleeve A2, an external thread is arranged on the outer periphery of the upper end of the pressure cavity outer sleeve A4, the inner periphery of the lower end of the electric cavity outer sleeve A2 is connected with the outer periphery of the upper end of the pressure cavity outer sleeve A4 through thread fit, a piston push sleeve A6 is arranged in the pressure cavity outer sleeve A4, the top of the piston push sleeve A6 is sleeved on the upper rod, the lower part of the piston push sleeve A6 is sleeved on the lower rod, the electric cavity outer sleeve A2 and the pressure cavity outer sleeve A4 are sleeved on the upper rod, the inner surface of the expanded diameter of the lower end of the pressure cavity outer sleeve A4 and the outer surface of the central rod A1 form a first cavity, and the lower part of the upper rod and the upper part of the upper rod are all positioned in the first cavity;
The outer surface of the pressure cavity shell A4 is provided with a mounting groove, a split nut A5 is sleeved in the mounting groove, the split nut A5 is of a two-half split structure, and the electric cavity outer sleeve A2 and the thread of the split nut A5 are detachably connected in a thread fit mode;
The piston push sleeve A6 is a revolution body, a hole for the upper rod to pass through is arranged in the center of the upper part, and a groove is arranged at the lower part of the piston push sleeve A6 to form a thin-wall structure with a lower opening.
Further stated, the upper side of the lower rod is detachably connected with a push sleeve A7, the upper side of the lower rod is detachably connected with a sealing piece A8, the push sleeve A7 is detachably connected with a rear top sleeve A9 in a plugging mode, a fixing seat A10 is detachably connected with the inside of the lower end of the rear top sleeve A9, the periphery of the lower end of the lower rod is provided with external threads, the inner periphery of the fixing seat A10 is provided with internal threads, and the fixing seat A10 is in threaded fit connection with the lower end of the lower rod.
When the piston push sleeve A6 is in an initial state, the piston push sleeve A6 seals the flowback channel A12, when the piston push sleeve A6 moves upwards, a distance is generated between the lower end of the piston push sleeve A6 and the upper end of the push sleeve A7 so as to form an annular channel communicated with the flowback channel A12, the inner diameter of the inner end surface of the annular channel increases gradually from top to bottom, an opening is formed in the circumferential wall body of the pressure cavity shell A4 and can be communicated with the annular channel, when the piston push sleeve A6 continues to rise and is higher than the opening, the flowback channel A12 is opened, a flowback phenomenon can occur in the bottom layer after fracturing is finished, at the moment, the pressure at the lower end of the intelligent tag is higher than the pressure at the upper end, the intelligent tag can push the piston push sleeve A6 upwards under the action of the pressure at the lower end, the flowback channel A12 is opened, the pressure at the lower end of the intelligent tag is ensured to be the same as the pressure at the upper end, and the lower fracturing operation of the intelligent tag is not influenced;
The diameter of the outer peripheral wall surface of the lower rod is reduced to form a first shoulder, the first shoulder is positioned below the flow-back channel A12, the inner diameter of the upper part of the inner periphery of the push sleeve A7 is increased to form a second shoulder, and the second shoulder is propped against the bottom of the first shoulder;
The sealing element A8 is an elastic element, and the sealing element A8 is abutted between a shoulder formed at the peripheral expanding position of the push sleeve A7 and the rear top sleeve A9, wherein the peripheral shoulder of the push sleeve A7 is abutted against the lower end of the pressure cavity shell A4;
the rear top sleeve A9 is arranged on the reduced outer surface of the lower end of the push sleeve A7, the fixing seat A10 is detachably connected to the thread of the lower end of the rear top sleeve A9, the fixing seat A10 is detachably connected with the large-diameter end of the center rod A1, fluororubber O-shaped rings are arranged at each sealing groove for sealing, for example, a plurality of grooves are formed in the outer periphery of the inner periphery of the piston push sleeve A6, fluororubber O-shaped rings are arranged in the grooves, and sealing between the piston push sleeve A6 and the outer periphery of the center rod A1 and sealing between the piston push sleeve A6 and the inner periphery of the electric cavity outer sleeve A2 are realized;
the electric cavity outer sleeve A2, the pressure cavity outer shell A4, the push sleeve A7, the top sleeve A9 and the fixing seat A10 form a shell, the outer wall surface of the shell comprises a cylindrical surface, the periphery of the top of the electric cavity outer sleeve A2 is provided with a chamfer surface, the lower part of the periphery of the fixing seat A10 forms a conical surface, and the outer diameter of the conical surface increases gradually from bottom to top.
The control and power supply system A3 and the electric valve A11 are arranged in a second cavity formed by the inner surface of the expanded diameter of the lower end of the electric cavity outer sleeve A2 and the outer surface of the upper rod, and the lower end of the electric valve A11 is inserted into a mounting hole arranged at the end face of the reduced diameter of the upper end of the pressure cavity outer shell A4;
The upper end face of the electric cavity outer sleeve A2 is provided with a through electric cavity outer sleeve A2 inside pressure-penetrating hole, the pressure-penetrating hole is provided with an expanded section to form two sections of holes, the upper end of the electric valve A11 is inserted into the pressure-penetrating hole after being extended, and the pressure-penetrating hole is sealed.
The material of the linkage type intelligent tag key for opening the intelligent fracturing sliding sleeve is magnesium aluminum alloy, and the intelligent tag key comprises an electric control part, such as an electric valve 11, which is also manufactured by magnesium aluminum alloy, and a control and power supply system A3 is soluble in a well liquid environment.
Working principle:
When the intelligent tag passes through the magnetic positioning type fracturing sliding sleeve B1, a control and power supply system A3 in the intelligent tag detects a magnetic signal, a small diameter end at the upper part of the electric valve A11 is controlled to move to a large diameter end at the lower part, so that the originally plugged pressure-permeable hole is permeable and pressurized, the pressure in the pipe column enters the second cavity from the pressure-permeable hole of the electric cavity sleeve A2, when the pressure acts on the upper end face of the piston push sleeve A6, the lower end pressure receiving surface of the piston push sleeve A6 is smaller than the upper end face, at the moment, under the pressure action, the piston push sleeve A6 moves downwards until contacting the upper end face of the push sleeve A7, and because the push sleeve A7 is in a sliding installation mode on the central rod A1, the piston push sleeve A6 can continuously push the push sleeve A7 downwards, and because the rear push sleeve A9 is fixed on the central rod A1 through a fixing seat A10, and therefore under the double action of the push sleeve A7 and the rear push sleeve A9, the sealing piece A8 is compressed. Because the valve core of the fracturing sliding sleeve B1 has the diameter reduction, the intelligent label can be seated in the valve core of the fracturing sliding sleeve after the action of the intelligent label is finished, and then the fracturing sliding sleeve B1 can be pressurized and opened into a tubular column to carry out fracturing operation. The bottom layer can take place to return to spit the phenomenon after the fracturing is accomplished, and intelligent label lower extreme pressure is greater than upper end pressure this moment, and intelligent label can upwards promote piston push sleeve A6 under the effect of lower extreme pressure, opens the flow back passageway, has guaranteed intelligent label lower extreme pressure and upper end the same, does not influence the operation of fracturing of lower floor.
Claims (10)
1. The utility model provides a coordinated type intelligent label key for opening intelligent fracturing sliding sleeve, including well core rod (A1), and the cover is established and the casing of rigid coupling on well core rod (A1), a serial communication port, be equipped with first cavity between casing and well core rod (A1), and with the second cavity of first cavity intercommunication, the lower part of well core rod (A1) is provided with down open-ended cavity, be provided with on well core rod (A1) with cavity intercommunication's back row passageway (A12), be provided with in the first cavity and overlap piston push away cover (A6) on well core rod (A1), the area of the lower terminal surface of piston push away cover (A6) is less than the area of piston push away cover (A6) up end, piston push away cover (A6) can be along the axis longitudinal sliding of well core rod (A1), be provided with control and power supply system (A3) in the second cavity, and with control and power supply system (A3) connected motorised valve (A11), be provided with the pressure hole that is in second cavity intercommunication on the casing, control and power supply system (A3) can open or close pressure hole (A11).
2. The linkage type smart tag key for opening an intelligent fracturing sliding sleeve according to claim 1, wherein the center rod (A1) comprises an upper rod and a lower rod integrally connected to the lower end of the upper rod, the upper rod and the lower rod are coaxially arranged, the diameter of the upper rod is smaller than that of the lower rod, the cavity of the lower opening is arranged on the lower rod, and the flowback channel (a 12) is arranged on the lower rod.
3. The linked smart tag key for opening a smart fracturing sliding sleeve of claim 2, wherein the flowback channels (a 12) are circumferentially evenly distributed on the lower rod.
4. The linked smart tag key for opening a smart fracturing sliding sleeve according to claim 2, wherein the housing comprises an electric cavity outer sleeve (A2) detachably connected to the upper side of the upper rod, a pressure cavity outer shell (A4) detachably connected to the inside of the lower end of the electric cavity outer sleeve (A2), a push sleeve (A7) detachably connected to the upper side of the lower rod, a rear top sleeve (A9) detachably connected to the push sleeve (A7), and a fixing seat (a 10) detachably connected to the inside of the lower end of the rear top sleeve (A9);
The lower end of the pressure cavity shell (A4) is provided with an expanded diameter, a first cavity is formed by the inner surface of the expanded diameter part of the pressure cavity shell (A4) and the outer surface of the central rod (A1), and the piston push sleeve (A6), the lower part of the upper rod and the upper part of the lower rod are all positioned in the first cavity;
When the lowest position of the piston pushing sleeve (A6) is propped against the upper end of the pushing sleeve (A7) to seal the flow-back channel (A12), when the piston pushing sleeve (A6) moves upwards, a distance is generated between the lower end of the piston pushing sleeve (A6) and the upper end of the pushing sleeve (A7) so as to form an annular channel communicated with the flow-back channel (A12), an opening is formed in the circumferential wall body of the pressure cavity shell (A4), the opening of the pressure cavity shell (A4) can be communicated with the annular channel, and when the piston pushing sleeve (A6) is higher than the opening of the pressure cavity shell (A4), the flow-back channel (A12) is opened.
5. The linkage type intelligent tag key for opening the intelligent fracturing sliding sleeve according to claim 4, wherein an installation groove is formed in the outer surface of the pressure cavity shell (A4), a split nut (A5) is sleeved in the installation groove, the split nut (A5) is of a two-half split structure, and detachable connection is achieved at the thread of the electric cavity outer sleeve (A2) and the thread of the split nut (A5) in a threaded fit mode.
6. The linkage type smart tag key for opening a smart fracturing sliding sleeve according to claim 4, wherein the piston push sleeve (A6) is arranged inside a pressure cavity shell (A4), a vertical channel is formed between the pressure cavity shell (A4) and the upper rod, and the second cavity is communicated with the first cavity through the vertical channel.
7. The linkage type intelligent tag key for opening the intelligent fracturing sliding sleeve according to claim 4, wherein a shoulder is formed by the shrinkage of the lower part of the periphery of the pushing sleeve (A7), and a sealing piece (A8) is arranged between the shoulder of the periphery of the pushing sleeve (A7) and the rear top sleeve (A9).
8. The linked smart tag key for opening a smart fracturing slide sleeve of claim 7, wherein the seal (A8) is an elastic member, the seal (A8) abutting between a shoulder formed at a peripheral expansion of the push sleeve (A7) and the rear top sleeve (A9).
9. The linked smart tag key for opening a smart fracturing slide sleeve of claim 7, wherein a peripheral shoulder of the push sleeve (A7) abuts a lower end of the pressure chamber housing (A4).
10. The linked smart tag key for opening a smart fracturing sleeve of any one of claims 1 to 9, wherein the material is magnesium aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421343835.2U CN222580544U (en) | 2024-06-13 | 2024-06-13 | Linkage type intelligent tag key for opening intelligent fracturing sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421343835.2U CN222580544U (en) | 2024-06-13 | 2024-06-13 | Linkage type intelligent tag key for opening intelligent fracturing sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222580544U true CN222580544U (en) | 2025-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421343835.2U Active CN222580544U (en) | 2024-06-13 | 2024-06-13 | Linkage type intelligent tag key for opening intelligent fracturing sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222580544U (en) |
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2024
- 2024-06-13 CN CN202421343835.2U patent/CN222580544U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 150000. Room 282, 1st Floor, East Area, Building 2, Science and Technology Innovation Headquarters, Songbei District, Harbin City, Heilongjiang Province, China. East of Planning Road, south of Planning Road 176, north of Planning Road 175, and west of Zhigu Street Patentee after: Huaao Intelligent Equipment (Harbin) Co.,Ltd. Country or region after: China Address before: No. 28 Yunshan Middle Road, Sanqi Town, Yuyao City, Ningbo City, Zhejiang Province (Yuyao Talent Entrepreneurship Park) Patentee before: Ningbo Huaao Intelligent Equipment Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |