CN217813403U - Tool for circulating well opening in well - Google Patents
Tool for circulating well opening in well Download PDFInfo
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- CN217813403U CN217813403U CN202221745663.2U CN202221745663U CN217813403U CN 217813403 U CN217813403 U CN 217813403U CN 202221745663 U CN202221745663 U CN 202221745663U CN 217813403 U CN217813403 U CN 217813403U
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- mandrel
- rupture disc
- ball valve
- tool
- outer cylinder
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Abstract
The utility model discloses an instrument that is used for circulation well opening in pit, including urceolus cluster and instrument mandrel cluster, the urceolus cluster includes urceolus and ball valve urceolus under top connection, rupture disc urceolus, attach fitting, connection urceolus, the rupture disc, and is threaded connection between each part of urceolus cluster, instrument mandrel cluster upper end is sealed mandrel, and sealed mandrel is fixed with the rupture disc urceolus through cutting the round pin, the instrument cluster lower extreme is mandrel, locking piece, first extension spring, locating piece, second extension spring, adapter sleeve, last race, seat spring, action pin, high-pressure ball valve assembly and lower race, race and ball valve urceolus spline fit and lower race and lower joint threaded connection, the utility model provides a close circulation hole and open the problem that is an action that current instrument exists, ball valve novel structure, easy processing and assembly, easy operation and safe and reliable.
Description
Technical Field
The utility model relates to a petroleum industry borehole operation instrument technical field, more specifically, the utility model relates to an instrument that is used for circulation to open a well in pit.
Background
At present, a common downhole short circuit circulation and well opening operation tool has the problems that after circulation operation is completed, a circulation hole is closed and a ball valve is opened, namely the ball valve is opened when the circulation hole is closed, so that the ball valve is opened suddenly if high pressure exists in a pipe column due to incomplete circulation operation or other problems such as gas accumulation, the partial pressure can act on a stratum (the stratum is perforated and completed), the production of oil gas can be seriously influenced, and even the stratum can be killed, so that serious loss is caused.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a developed a instrument that is used for circulation well opening in pit, through the rupture disc mechanism that two blasting pressure values are different, manage opening and closing of circulation hole and ball valve respectively, improve operating efficiency and security.
The utility model provides a technical scheme does:
a tool for cyclically opening a well downhole, comprising:
the upper joint is provided with a plurality of first circulation holes at intervals in the circumferential direction; and
one end of the outer barrel of the rupture disc is connected with the upper joint, a first rupture disc mechanism is arranged on the circumference of the outer barrel of the rupture disc, and a descending step is arranged in the outer barrel of the rupture disc;
one end of the connecting device is connected with the outer barrel of the rupture disc, and an ascending step is arranged in the connecting device;
one end of the lower outer barrel of the rupture disc is connected with the other end of the connecting device, and a second rupture disc mechanism is arranged on the circumference of the lower outer barrel of the rupture disc;
one end of the ball valve outer cylinder is connected with the other end of the lower outer cylinder of the rupture disc;
the sealing mandrel is coaxially arranged inside the upper joint, the outer rupture disc cylinder and the connecting device and is fixed on the upper joint in a disconnectable manner, and a plurality of second circulation holes and first limiting steps are arranged at intervals in the circumferential direction of the sealing mandrel;
the mandrel is coaxially arranged inside the connecting device, the lower outer barrel of the rupture disc and the outer barrel of the ball valve, the mandrel is fixed on the lower outer barrel of the rupture disc in a disconnectable manner, and a second limiting step is arranged in the circumferential direction of the mandrel;
one end of the operating pin is connected with the mandrel, and the operating pin is provided with a ball structure;
the high-pressure ball valve assembly is coaxially fixed in the ball valve outer cylinder, is clamped with the ball body structure of the operating pin and is used for opening or closing the high-pressure ball valve assembly;
the second circulation holes and the first circulation holes are communicated in a one-to-one correspondence mode, the first limiting steps are selectively clamped with the descending steps, the mandrel and the sealing mandrel keep a gap, the second limiting steps are selectively clamped with the ascending steps, and the first rupture disc mechanism and the second rupture disc mechanism are different in bursting pressure.
Preferably, the connecting means comprises:
one end of the connecting joint is connected with the other end of the outer barrel of the rupture disc;
one end of the connecting outer cylinder is connected with the other end of the connecting joint, the other end of the connecting outer cylinder is connected with one end of the lower outer cylinder of the rupture disc, and an ascending step is arranged inside the connecting outer cylinder;
wherein the sealing mandrel is coaxially arranged inside the connecting joint, the mandrel is coaxially arranged inside the connecting joint and the connecting outer cylinder, and a space is kept between the sealing mandrel and the mandrel.
Preferably, the method further comprises the following steps:
a cushion ring disposed on the descending step.
Preferably, the method further comprises the following steps:
the first tension spring is arranged between the connecting joint and the connecting outer cylinder;
and the locking block is arranged on the first tension spring.
Preferably, the spindle is provided with a lock block groove, and the lock block groove are selectively mutually clamped.
Preferably, the method further comprises the following steps:
the connecting sleeve is arranged between the mandrel and the outer cylinder of the ball valve;
the positioning block is arranged between the connecting sleeve and the mandrel;
wherein, one end of the operating pin is connected with the connecting sleeve.
Preferably, the method further comprises the following steps:
a first shear pin disposed between the seal mandrel and the upper sub;
a second shear pin disposed between the mandrel and the lower outer barrel of the rupture disc.
Preferably, the method further comprises:
the upper seat ring is coaxially arranged inside the ball valve outer barrel;
one end of the lower seat ring is connected with the upper seat ring, the other end of the lower seat ring is connected with the lower joint, and the lower seat ring is connected with the outer cylinder of the ball valve;
the high-pressure ball valve assembly is coaxially arranged between the upper seat ring and the lower seat ring.
Preferably, the high pressure ball valve assembly includes an upper ball seat, a ball body and a lower ball seat.
Preferably, the ball valve outer cylinder and the lower joint are engaged with each other.
Beneficial effect:
the utility model provides an instrument for circulating well opening in pit through the rupture disc mechanism that two blasting pressure values are different, manages opening and closing of circulation hole and ball valve respectively, has solved the logical order problem that realizes on an instrument that the circulation hole closes and the well opening of ball valve, closes the circulation hole promptly and opens the ball valve by the way, improves the operating efficiency, novel structure, easy processing and assembly, easy operation and safe and reliable.
Drawings
Fig. 1 is a schematic structural diagram of a tool for downhole circulating well opening according to the present invention.
Fig. 2 is a schematic structural view of the closed circulation hole of the present invention.
Fig. 3 is a partial enlarged view of the closed circulation hole of the present invention.
Fig. 4 is a schematic structural diagram of the opening ball valve of the present invention.
Fig. 5 is a partial enlarged view of the opening ball valve of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1, the utility model provides a tool for circulating well opening in pit, urceolus cluster and instrument dabber cluster, the urceolus cluster includes: upper joint 111, rupture disc outer cylinder 112, connecting device (connecting joint 113, connecting outer cylinder 114), rupture disc lower outer cylinder 115 and ball valve outer cylinder 116, the tool mandrel string includes: the high-pressure ball valve assembly comprises a sealing mandrel 120, a mandrel 130, a positioning block 141, a second tension spring 142, a connecting sleeve 143, an upper seat ring 144, a seat spring 145, an operating pin 146, a lower seat ring 147, a high-pressure ball valve assembly 150, a lower joint 160, a first shear pin 171, a buffer ring 172, a locking block 173, a first tension spring 174, a second shear pin 175, a supporting seal 176, a first rupture disc mechanism (a first rectangular sealing ring 181 and a first rupture disc 182) and a second rupture disc mechanism (a second rectangular sealing ring 183 and a second rupture disc 184).
Wherein, the upper part of the upper joint 111 is provided with CAS threads for connecting with other tools; the outer circle of the lower part of the upper joint 111 is of a connecting thread structure, a sealing groove structure and a shear pin hole structure, 4 first circulation holes are arranged on the outer circle of the upper joint 111 at equal intervals in the circumferential direction, the upper ends of the first circulation holes are threaded holes, and the lower ends of the first circulation holes are unthreaded hole structures;
the inner circle of the upper part of the outer barrel 112 of the rupture disc is a connecting thread and is used for being connected with the upper joint 111; the outer circle of the lower part of the outer barrel 112 of the rupture disc is provided with connecting threads; a descending step is arranged in the outer rupture disk cylinder 112, a first rupture disk mechanism is designed in the middle of the outer circle of the outer rupture disk cylinder 112, the first rupture disk mechanism comprises a first rectangular sealing ring 181 and a first rupture disk 182, the first rectangular sealing ring 181 is arranged between the first rupture disk 182 and the outer rupture disk cylinder 112, the first rupture disk 182 is a rupture disk under the action of specified pressure, namely the first rupture disk 182 is burst and conducted when the annular control pressure is increased to the specified pressure, and the pressure is led into a sealing inner cavity from the first rupture disk 182.
The inner hole at the upper part of the connecting joint 113 is a connecting thread and a sealing inner hole and is used for being connected with the lower part of the outer barrel 112 of the rupture disc; the inner hole at the lower part of the connecting joint 113 is a connecting thread and a sealing inner hole.
The outer circle of the upper part of the connecting outer cylinder 114 is a sealing groove and a connecting thread and is used for being connected with the lower part of the connecting joint 113; the inner hole at the lower part of the connecting outer cylinder 114 is a connecting thread and a sealing inner hole, and an ascending step is arranged inside the connecting outer cylinder 114.
The upper part of the lower outer barrel 115 of the rupture disc is provided with a shear pin hole, a sealing groove and a connecting thread which are used for connecting with the lower part of the connecting outer barrel 114; the outer circle of the lower part of the lower outer barrel 115 of the rupture disc is provided with connecting threads; the middle of the outer circle of the lower outer barrel 115 of the rupture disk is provided with a second rupture disk mechanism, the second rupture disk mechanism comprises a second rectangular sealing ring 183 and a second rupture disk 184, the second rectangular sealing ring 183 is arranged between the second rupture disk 184 and the lower outer barrel 115 of the rupture disk, and the second rupture disk 184 is set to be a rupture disk under the action of a specified pressure, namely when the environment control pressure is increased to the specified pressure, the second rupture disk 184 is ruptured and conducted, and the pressure is led into a sealing inner cavity from the position.
The upper part of the ball valve outer cylinder 116 is provided with connecting threads and a sealing inner hole which are used for being connected with the lower part of the rupture disc lower outer cylinder 115, and the inner hole at the lower part of the ball valve outer cylinder 116 is provided with an inner spline.
The outer circle of the upper part of the lower joint 160 is provided with a sealing groove which is used for being mutually clamped with the lower part of the ball valve outer cylinder; the lower adapter 160 has a seal groove and connecting threads in its upper bore and CAS threads in its lower bore for connection to other tools.
Six sealing grooves are formed in the upper portion of the outer circle of the sealing mandrel 120, 4 second circulation holes are formed in the sealing mandrel 120 at intervals in the circumferential direction, a shear pin groove is formed in the middle of the sealing mandrel 120 and used for being located in a tool through a first shear pin 171 (namely located between the sealing mandrel 120 and the upper joint 111), a sealing groove is formed in the middle of the large outer circle and forms a piston area difference with a lower sealing groove of the second circulation hole, and the sealing mandrel 120 is guaranteed to move downwards when annular pressurization is conducted; a sealing groove is designed on the excircle of the lower step, and two sealing grooves form a closed air cavity to avoid static pressure balance.
The sealing mandrel 120 is provided with a first limiting step, the 4 second circulation holes are communicated with the 4 first circulation holes in a selectable one-to-one correspondence manner, the first limiting step and the descending step are selectively clamped with each other, and a buffer ring 172 is arranged between the first limiting step and the descending step.
A first tension spring 174 is transversely disposed between the connection joint 113 and the connection outer cylinder 114, and a locking block 173 is disposed on the first tension spring 174 to maintain the first tension spring 174 in a compressed state by the mutual contact between the spindle 130 and the connection joint 113 and the connection outer cylinder 114.
The upper part of the mandrel 130 is designed with a locking block groove for the locking block 173 to be clamped in after the tool is actuated; the middle outer circle of the mandrel 130 is provided with uniform distribution holes which play a role of flowing fluid; a sealing groove is designed on the large outer circle of the mandrel 130, a shear pin groove is designed on the outer circle of the step of the mandrel 130, the middle of the mandrel 130 is a sealing outer circle, and a mounting groove is designed on the outer circle of the lower part of the mandrel 130.
A second limiting step is circumferentially arranged inside the mandrel 130 and is used for being selectively clamped with the upper step.
The mandrel 130 and the sealing mandrel 120 are always spaced apart.
A second shear pin 175 is disposed between mandrel 130 and lower outer rupture disc cartridge 115.
A uniform distribution groove is designed on the connecting sleeve 143, the uniform distribution groove corresponds to the mounting groove of the mandrel 130, and the positioning block 141 is clamped in the groove under the force of the second tension spring 142; the lower part of the connecting sleeve 143 is designed with a circumferential groove.
The operating pin 146 is a special-shaped body, the upper part of the operating pin is clamped in the circumferential groove on the connecting sleeve 143, and the lower part of the operating pin is designed with a spherical structure.
A sealing groove is designed at the upper part of the upper seat ring 144, and a supporting seal 176 is arranged in the sealing groove to play a role in isolating silt; the lower inner bore of the upper seat ring 144 is threaded and is used to house a ball valve assembly.
The outer circle of the upper part of the lower seat ring 147 is designed with threads for connecting with the upper seat ring; the middle excircle of the lower seat ring 147 is designed with a spline which is used for matching with the spline of the outer barrel of the ball valve, so as to play a role in transmitting torque; the lower part of the lower seat ring 147 is provided with connecting threads which are used for connecting with a lower joint and playing a role in transferring pulling force.
The high-pressure ball valve assembly 150 includes an upper ball seat, a ball body and a lower ball seat, and the ball body is matched with the upper ball seat and the lower ball seat to play a sealing role.
The ball structure of the operating pin 146 cooperates with a ball in the high pressure ball valve assembly 150 by which the ball valve is toggled open and closed.
The seat spring 145 is a disc spring, and the concave surface is placed and installed towards the ball valve, so that supporting force is provided for contact sealing of the ball valve and the sealing surface.
The utility model discloses a working process does:
the tool is provided with two rupture discs, the two rupture discs have different burst pressure values and are respectively used for managing the closing of the circulation hole and the opening of the ball valve.
As shown in fig. 1, the circulation hole is in an open state at the initial downhole, and the forward and reverse circulation operations can be directly performed.
After the circulation is completed, the annulus is pressurized, the pressure breaks the first rupture disc at the upper end of the tool, the sealing mandrel descends to close the circulation hole, and the ball valve at the lower end of the tool is still closed, as shown in fig. 2 and 3.
When the lower end ball valve needs to be opened, the pressure is continuously applied to the annular space, the pressure breaks a second rupture disc at the lower end of the tool, the mandrel moves upwards, the ball valve is locked in an opening state, and the tool is full in diameter at the moment.
The utility model provides a tool for circulating well opening in pit, the problem of closing the circulation hole and opening the ball valve and be an action that current instrument exists has been solved, the ball valve is opened to the subsidiary when closing the circulation hole promptly, the problem that exists like this is if other problems such as the operation of circulation is not thorough or gas gathering make the tubular column in there be higher pressure, open the ball valve suddenly, this partial pressure can be used in the stratum (the stratum has perforated the completion), can seriously influence the output of oil gas like this, can die the stratum even, cause serious loss, and the utility model provides a tool novel structure, easy processing and assembly, easy operation and safe and reliable.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, particular embodiments, but rather to those skilled in the art, having the benefit of the teachings of the present invention, which is capable of numerous modifications and alternative forms, and will be readily apparent to those skilled in the art, and it is not intended to limit the invention to the details shown and described without departing from the general concepts defined by the appended claims and their equivalents.
Claims (10)
1. A tool for cyclically opening a well downhole, comprising:
the upper joint is provided with a plurality of first circulation holes at intervals in the circumferential direction; and
one end of the outer barrel of the rupture disc is connected with the upper joint, a first rupture disc mechanism is arranged on the circumference of the outer barrel of the rupture disc, and a descending step is arranged in the outer barrel of the rupture disc;
one end of the connecting device is connected with the outer barrel of the rupture disc, and an ascending step is arranged in the connecting device;
one end of the lower outer barrel of the rupture disc is connected with the other end of the connecting device, and a second rupture disc mechanism is arranged on the circumference of the lower outer barrel of the rupture disc;
one end of the ball valve outer cylinder is connected with the other end of the lower outer cylinder of the rupture disc;
the sealing mandrel is coaxially arranged inside the upper joint, the outer rupture disc cylinder and the connecting device, the sealing mandrel can be fixed on the upper joint in a disconnecting mode, and a plurality of second circulation holes and first limiting steps are arranged at intervals in the circumferential direction of the sealing mandrel;
the mandrel is coaxially arranged inside the connecting device, the lower outer barrel of the rupture disc and the outer barrel of the ball valve, the mandrel is fixed on the lower outer barrel of the rupture disc in a disconnectable manner, and a second limiting step is arranged in the circumferential direction of the mandrel;
one end of the operating pin is connected with the mandrel, and the operating pin is provided with a ball structure;
the high-pressure ball valve assembly is coaxially fixed in the ball valve outer cylinder, is mutually clamped with the ball body structure of the operating pin and is used for opening or closing the high-pressure ball valve assembly;
the second circulation holes and the first circulation holes are communicated in a one-to-one correspondence mode, the first limiting steps are selectively clamped with the descending steps, the mandrel and the sealing mandrel keep a gap, the second limiting steps are selectively clamped with the ascending steps, and the first rupture disc mechanism and the second rupture disc mechanism are different in bursting pressure.
2. A tool for cyclic opening of a well downhole as defined in claim 1, wherein the connection means comprises:
one end of the connecting joint is connected with the other end of the outer barrel of the rupture disc;
one end of the connecting outer cylinder is connected with the other end of the connecting joint, the other end of the connecting outer cylinder is connected with one end of the lower outer cylinder of the rupture disc, and an ascending step is arranged inside the connecting outer cylinder;
wherein the sealing mandrel is coaxially arranged inside the connecting joint, the mandrel is coaxially arranged inside the connecting joint and the connecting outer cylinder, and a space is kept between the sealing mandrel and the mandrel.
3. The tool for cyclically opening a well downhole as recited in claim 2, further comprising:
a cushion ring disposed on the descending step.
4. A tool for cyclically opening a well downhole as defined in claim 3, further comprising:
the first tension spring is arranged between the connecting joint and the connecting outer cylinder;
and the locking block is arranged on the first tension spring.
5. The tool of claim 4, wherein the mandrel is provided with a lock slot, the lock and the lock slot selectively engaging with each other.
6. The tool for cyclically opening a well downhole as recited in claim 5, further comprising:
the connecting sleeve is arranged between the mandrel and the outer cylinder of the ball valve;
the positioning block is arranged between the connecting sleeve and the mandrel;
wherein, one end of the operating pin is connected with the connecting sleeve.
7. The tool for cyclically opening a well downhole as recited in claim 6, further comprising:
a first shear pin disposed between the seal mandrel and the upper sub;
a second shear pin disposed between the mandrel and the lower outer barrel of the rupture disc.
8. The tool for cyclically opening a well downhole as recited in claim 7, further comprising:
the upper seat ring is coaxially arranged inside the ball valve outer cylinder;
one end of the lower seat ring is connected with the upper seat ring, the other end of the lower seat ring is connected with the lower joint, and the lower seat ring is connected with the outer cylinder of the ball valve;
the high-pressure ball valve assembly is coaxially arranged between the upper seat ring and the lower seat ring.
9. A tool for a cyclic opening of a well downhole as in claim 8 wherein the high pressure ball valve assembly comprises an upper ball seat, a ball and a lower ball seat.
10. A tool for cyclic opening of a well downhole as in claim 9, wherein the outer barrel of the ball valve is engaged with the lower joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221745663.2U CN217813403U (en) | 2022-07-08 | 2022-07-08 | Tool for circulating well opening in well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221745663.2U CN217813403U (en) | 2022-07-08 | 2022-07-08 | Tool for circulating well opening in well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217813403U true CN217813403U (en) | 2022-11-15 |
Family
ID=83963519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221745663.2U Active CN217813403U (en) | 2022-07-08 | 2022-07-08 | Tool for circulating well opening in well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217813403U (en) |
-
2022
- 2022-07-08 CN CN202221745663.2U patent/CN217813403U/en active Active
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