Casing and fishing integrated tool for downhole operation
By designing an integrated tool for downhole operations that combines milling and fishing functions, the problem of multiple tool replacements in existing technologies is solved, thus achieving continuity and stability in downhole operations.
Patent Information
- Application Number
- CN202520185358.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-06
AI Technical Summary
In downhole operations, existing technologies require carrying multiple tools for milling and retrieval, resulting in complex and difficult operations that cannot complete multiple tasks continuously.
An integrated downhole milling and fishing tool was designed, which integrates milling and fishing functions. The tool can be used continuously through positioning structure and connecting components, including threaded rod, positioning nut, fixed cross plate, movable cover, positioning insert plate, etc., to ensure the stability and continuity of milling and fishing.
It enables the continuous completion of milling and retrieval operations, improves tool stability and ease of operation, reduces the number of tool changes, and lowers the difficulty of the work.
Smart Images
Figure CN223647766U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of downhole operation tool, concretely to a downhole operation casing and fishing integrated tool. BACKGROUND
[0002] In the process of oil downhole operation, the outside of the pipe string needs to be treated with casing milling to remove the foreign matter on the outside of the pipe string, which is very important in the field of downhole operation, and fishing for fallen fish is also needed to prevent the fallen fish from being stuck in the pipe string.
[0003] However, the workers need to carry multiple tools to assist in the operation when working in the well, which not only affects the activities of the workers in the well, but also requires multiple tool changes during operation, resulting in a large work difficulty.
[0004] The present application provides a new downhole operation casing and fishing integrated tool to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a downhole operation casing and fishing integrated tool to solve the problem of being unable to continuously complete multiple tasks in the background technology.
[0006] To achieve the above object, the utility model provides the following technical scheme: a downhole operation casing and fishing integrated tool, comprising a mounting cylinder, the top end of the mounting cylinder is fixedly connected with a handle, the inside of the mounting cylinder is fixedly connected with a partition plate, the center line of the partition plate and the center line of the mounting cylinder are on the same vertical plane, the inside of the mounting cylinder is provided with a positioning structure for continuously performing casing milling and fishing work;
[0007] The positioning structure comprises a fixed cylinder, the top end of the partition plate is fixedly connected with a fixed cylinder, the inside of the fixed cylinder is provided with positioning slots on both sides, the bottom end of the partition plate is fixedly connected with a fixed sleeve, the inside of the fixed sleeve is movably connected with a connecting rod, the top end of the connecting rod is fixedly connected with a movable cover, the top end of the connecting rod is fixedly connected with positioning inserts on both sides, the top end of the inside of the mounting cylinder is fixedly connected with a fixed horizontal plate, the top end of the movable cover is fixedly connected with a threaded rod, and the threaded rod penetrates through the fixed horizontal plate and is movably connected with a positioning nut.
[0008] As a further technical scheme of the utility model, the positioning nut is movably connected with the fixed horizontal plate, and the positioning insert is movably connected with the positioning slot.
[0009] As a further technical scheme of the utility model, the movable cover is movably connected with the mounting cylinder, and the inside of the fixed sleeve is in communication with the inside of the fixed cylinder.
[0010] As a further technical solution of this utility model, the movable cover is movably connected to the fixed horizontal plate, and the connecting rod is movably connected to the fixed cylinder.
[0011] As a further technical solution of this utility model, a fixing ring is fixedly connected to the bottom of the outer side of the mounting cylinder, a milling sleeve is movably connected to the bottom of the outer side of the mounting cylinder, a connecting spring is fixedly connected to the top of the milling sleeve, a slot is opened at the top of the fixing ring, a through groove is opened at the bottom of the fixing ring, and a locking block is fixedly connected to the top of the connecting spring.
[0012] As a further technical solution of this utility model, the sleeve is movably connected to the fixed ring, and the locking block passes through the through groove and extends into the groove.
[0013] As a further technical solution of this utility model, a limiting cylinder is fixedly connected to the bottom end of the connecting rod, a retrieval connecting cylinder is fixedly connected to the bottom end of the limiting cylinder, and a threaded connector is fixedly connected to the bottom end of the retrieval connecting cylinder.
[0014] As a further technical solution of this utility model, the center line of the threaded connector and the center line of the limiting cylinder are on the same vertical plane, and the limiting cylinder is movably connected to the mounting cylinder.
[0015] Compared with the prior art, the beneficial effects of this utility model are: the integrated tool for downhole operation and fishing not only enables the continuous completion of multiple tasks and facilitates the connection of the milling and fishing components, but also improves the stability of the fishing structure;
[0016] (1) By setting up a threaded rod, a positioning nut, a fixed horizontal plate, a movable cover, a positioning insert plate, a connecting rod, a fixed sleeve, a fixed cylinder and a positioning slot, when working, the retrieval component is stored inside the mounting cylinder, and the pipe column can be milled by the milling sleeve connected at the bottom. After the milling is completed, the positioning nut is rotated to make it separate from the outside of the threaded rod, and the movable cover can be pushed out through the connecting rod to push out the retrieval component at the bottom. At the same time, the positioning insert plate outside the connecting rod is inserted into the positioning slot to position the connecting rod, so that the connecting rod and the mounting cylinder can rotate synchronously, so as to facilitate the retrieval of the fallen fish by the retrieval component connected at the bottom of the threaded connector. The milling and retrieval work can be completed by this device.
[0017] (2) By setting a fixing ring, a milling sleeve, a through groove, a connecting spring, a slot and a block, before working, the milling sleeve can be sleeved on the bottom of the outside of the mounting cylinder. Pushing the milling sleeve will drive the connecting spring to insert into the through groove. After the connecting spring drives the block at one end to pass through the through groove, the connecting spring will quickly spring back and drive the block to engage with the slot. Thus, the milling sleeve is positioned by the connecting spring, which makes it easy to connect the milling sleeve.
[0018] (3) By setting up a partition, a limiting cylinder, a threaded connector, a retrieval connecting cylinder and a fixing sleeve, before the operation, the retrieval component is installed on the outside of the threaded connector, so that the retrieval component is connected through the threaded connector. During retrieval, the limiting cylinder outside the retrieval connecting cylinder fits into the inside of the mounting cylinder to limit the retrieval connecting cylinder, so as to ensure the stability of the device during retrieval. The fixing sleeve fits into the outside of the connecting rod to limit the retrieval connecting cylinder to further improve the stability during retrieval, and at the same time prevents the retrieval component from shaking when it extends, thus realizing the improvement of the stability of the retrieval structure. Attached Figure Description
[0019] Figure 1 This is a frontal cross-sectional view of the present invention.
[0020] Figure 2 This is a top view cross-sectional structural diagram of the fixed cylinder of this utility model;
[0021] Figure 3 This is a top view of the fixed horizontal plate structure of this utility model;
[0022] Figure 4 This is a top view cross-sectional diagram of the fixing ring structure of this utility model.
[0023] In the diagram: 1. Mounting cylinder; 2. Handle; 3. Threaded rod; 4. Positioning nut; 5. Fixed cross plate; 6. Movable cover; 7. Positioning insert plate; 8. Connecting rod; 9. Partition plate; 10. Limiting cylinder; 11. Fixing ring; 12. Milling sleeve; 13. Threaded connector; 14. Retrieval connecting cylinder; 15. Fixed sleeve; 16. Fixed cylinder; 17. Positioning slot; 18. Through groove; 19. Connecting spring; 20. Slot; 21. Locking block. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example: Please refer to Figures 1-4 A downhole operation integrated milling and retrieval tool includes an installation cylinder 1, a handle 2 fixedly connected to the top of the installation cylinder 1, a partition 9 fixedly connected inside the installation cylinder 1, the center line of the partition 9 and the center line of the installation cylinder 1 are on the same vertical plane, and the installation cylinder 1 is provided with a positioning structure for continuous milling and retrieval work.
[0026] The positioning structure includes a fixed cylinder 16, a fixed cylinder 16 fixedly connected to the top of the partition 9, positioning slots 17 opened on both sides inside the fixed cylinder 16, a fixed sleeve 15 fixedly connected to the bottom of the partition 9, a connecting rod 8 movably connected inside the fixed sleeve 15, a movable cover 6 fixedly connected to the top of the connecting rod 8, positioning inserts 7 fixedly connected to the top of both sides inside the connecting rod 8, a fixed horizontal plate 5 fixedly connected to the top inside the mounting cylinder 1, a threaded rod 3 fixedly connected to the top of the movable cover 6, and a positioning nut 4 movably connected through the fixed horizontal plate 5.
[0027] The positioning nut 4 is movably connected to the fixed horizontal plate 5, and the positioning insert 7 is movably connected to the positioning slot 17.
[0028] The movable cover 6 is movably connected to the mounting cylinder 1, and the fixed sleeve 15 is internally connected to the fixed cylinder 16;
[0029] The movable cover 6 is movably connected to the fixed horizontal plate 5, and the connecting rod 8 is movably connected to the fixed cylinder 16;
[0030] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, during operation, the retrieval component is housed inside the mounting cylinder 1, and the pipe column can be milled using the milling sleeve 12 connected to the bottom. After milling, the positioning nut 4 is rotated to disengage it from the outside of the threaded rod 3, which can push the movable cover 6 to push out the retrieval component at the bottom through the connecting rod 8. At the same time, the positioning plate 7 outside the connecting rod 8 is inserted into the positioning slot 17 to position the connecting rod 8, so that the connecting rod 8 and the mounting cylinder 1 can rotate synchronously, so as to facilitate the retrieval of the fallen fish through the retrieval component connected to the bottom of the threaded connector 13. This device can complete both milling and retrieval work.
[0031] A fixing ring 11 is fixedly connected to the bottom of the outer side of the mounting cylinder 1. A milling sleeve 12 is movably connected to the bottom of the outer side of the mounting cylinder 1. A connecting spring 19 is fixedly connected to the top of the milling sleeve 12. A slot 20 is opened at the top of the fixing ring 11. A through groove 18 is opened at the bottom of the fixing ring 11. A locking block 21 is fixedly connected to the top of the connecting spring 19.
[0032] The sleeve 12 is movably connected to the fixed ring 11, and the locking block 21 passes through the through groove 18 and extends into the inside of the locking groove 20;
[0033] Specifically, such as Figure 1 and Figure 4As shown, before starting work, the milling sleeve 12 can be sleeved on the bottom of the outside of the mounting sleeve 1. Pushing the milling sleeve 12 will cause the connecting spring 19 to be inserted into the through groove 18. After the connecting spring 19 drives the locking block 21 at one end to pass through the through groove 18, the connecting spring 19 will quickly spring back and drive the locking block 21 to engage with the locking groove 20. Thus, the milling sleeve 12 is positioned by the connecting spring 19, which makes it easy to connect the milling sleeve 12.
[0034] The bottom end of the connecting rod 8 is fixedly connected to the limiting cylinder 10, the bottom end of the limiting cylinder 10 is fixedly connected to the retrieval connecting cylinder 14, and the bottom end of the retrieval connecting cylinder 14 is fixedly connected to the threaded connector 13.
[0035] The centerline of the threaded connector 13 and the centerline of the limiting cylinder 10 are on the same vertical plane, and the limiting cylinder 10 is movably connected to the mounting cylinder 1.
[0036] Specifically, such as Figure 1 As shown, before operation, the retrieval assembly is installed on the outside of the threaded connector 13, thereby connecting the retrieval assembly through the threaded connector 13. During retrieval, the limiting sleeve 10 on the outside of the retrieval connecting cylinder 14 fits against the inside of the mounting cylinder 1 to limit the retrieval connecting cylinder 14, thereby ensuring the stability of the device during retrieval. The fixing sleeve 15 fits against the outside of the connecting rod 8 to limit the retrieval connecting cylinder 14, thereby further improving the stability during retrieval and preventing shaking when the retrieval assembly extends, thus improving the stability of the retrieval structure.
[0037] Working Principle: Before operation, the milling sleeve 12 is fitted onto the bottom of the mounting cylinder 1. Pushing the milling sleeve 12 causes the connecting spring 19 to insert into the through groove 18. The connecting spring 19 then causes one end of its locking block 21 to pass through the through groove 18. The connecting spring 19 then quickly rebounds, engaging the locking block 21 with the locking groove 20, thus positioning the milling sleeve 12. The retrieval assembly is then installed on the outside of the threaded connector 13, connecting the retrieval assembly via the threaded connector 13. During retrieval, the limiting cylinder 10 outside the retrieval connecting cylinder 14 fits against the inside of the mounting cylinder 1, limiting the retrieval connecting cylinder 14 and ensuring stability during retrieval. Qualitatively, the fixed sleeve 15 fits against the outside of the connecting rod 8 to limit the retrieval connecting cylinder 14, thereby further improving the stability during retrieval and preventing swaying when the retrieval component extends. During operation, the retrieval component is retracted inside the mounting cylinder 1, and the pipe column can be milled by the milling sleeve 12 connected at the bottom. After milling is completed, rotating the positioning nut 4 to disengage it from the outside of the threaded rod 3 can push the movable cover 6 to push out the retrieval component at the bottom through the connecting rod 8. At the same time, the positioning insert 7 on the outside of the connecting rod 8 is inserted into the positioning slot 17 to position the connecting rod 8, so that the connecting rod 8 and the mounting cylinder 1 can rotate synchronously, so as to facilitate the retrieval of the fallen fish through the retrieval component connected at the bottom of the threaded connector 13.
Claims
1. A downhole fishing and retrieval integrated tool, comprising an installation cylinder (1), characterized in that: The top end of the mounting cylinder (1) is fixedly connected to a handle (2), and the interior of the mounting cylinder (1) is fixedly connected to a partition (9). The center line of the partition (9) and the center line of the mounting cylinder (1) are on the same vertical plane. The interior of the mounting cylinder (1) is provided with a positioning structure for continuous milling and retrieval work. The positioning structure includes a fixed cylinder (16), the top of the partition (9) is fixedly connected to the fixed cylinder (16), the two sides inside the fixed cylinder (16) are provided with positioning slots (17), the bottom of the partition (9) is fixedly connected to the fixed sleeve (15), the inside of the fixed sleeve (15) is movably connected to the connecting rod (8), the top of the connecting rod (8) is fixedly connected to the movable cover (6), the top of the two sides inside the connecting rod (8) is fixedly connected to the positioning insert (7), the top of the inside of the mounting cylinder (1) is fixedly connected to the fixed horizontal plate (5), the top of the movable cover (6) is fixedly connected to the threaded rod (3), and the threaded rod (3) passes through the fixed horizontal plate (5) and is movably connected to the positioning nut (4).
2. The integrated downhole fishing and retrieval tool according to claim 1, characterized in that: The positioning nut (4) is movably connected to the fixed horizontal plate (5), and the positioning insert (7) is movably connected to the positioning slot (17).
3. The integrated downhole fishing and retrieval tool according to claim 1, characterized in that: The movable cover (6) is movably connected to the mounting cylinder (1), and the fixed sleeve (15) is connected to the interior of the fixed cylinder (16).
4. The integrated downhole fishing and retrieval tool according to claim 1, characterized in that: The movable cover (6) is movably connected to the fixed horizontal plate (5), and the connecting rod (8) is movably connected to the fixed cylinder (16).
5. The integrated downhole fishing and retrieval tool according to claim 1, characterized in that: A fixing ring (11) is fixedly connected to the bottom of the outside of the mounting cylinder (1), and a milling sleeve (12) is movably connected to the bottom of the outside of the mounting cylinder (1). A connecting spring (19) is fixedly connected to the top of the milling sleeve (12). A slot (20) is opened at the top of the fixing ring (11), and a through groove (18) is opened at the bottom of the fixing ring (11). A locking block (21) is fixedly connected to the top of the connecting spring (19).
6. The integrated downhole fishing and retrieval tool according to claim 5, characterized in that: The milling sleeve (12) is movably connected to the fixing ring (11), and the locking block (21) passes through the through groove (18) and extends into the groove (20).
7. The integrated downhole fishing and retrieval tool according to claim 1, characterized in that: The bottom end of the connecting rod (8) is fixedly connected to a limiting cylinder (10), the bottom end of the limiting cylinder (10) is fixedly connected to a retrieval connecting cylinder (14), and the bottom end of the retrieval connecting cylinder (14) is fixedly connected to a threaded connector (13).
8. The integrated downhole fishing and retrieval tool according to claim 7, characterized in that: The centerline of the threaded connector (13) and the centerline of the limiting cylinder (10) are on the same vertical plane, and the limiting cylinder (10) is movably connected to the mounting cylinder (1).