Special lifting ring for external flat type drill conductor

Abstract

A lifting ring special for an outer flat type drill conductor comprises a first main body, a second main body and lifting handles, the first main body and the second main body are each provided with one or more lifting handles, and the first main body and the second main body are hinged through the ends to form a closed annular structure capable of being opened and closed. And the free ends of the first main body and the second main body are detachably and fixedly connected through a fixer. The utility model has the beneficial effects that the double-stage right trapezoid boss is embedded into the outer flat type drill conductor for connection, the structure is simple, the strength is higher, the double-stage right trapezoid boss is adaptive to the outer flat type coupling-free drill conductor, and the requirements of operation under special well conditions can be met. Meanwhile, the lifting ring adopts a hinge structure, the installation steps of the lifting ring are simplified, the locking hook is used for connection, the stop pin is used for locking, the operation time is greatly shortened, and the operation efficiency is improved. The operability of the lifting ring is effectively improved by utilizing the lifting handle and the connecting hand grab rod, the interactivity with personnel is enhanced, the connecting speed is high, and the operation cost is low.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas well drilling and extraction technology, and more specifically to a special lifting ring for an external flat-type water-proof casing. Background Technology

[0002] Riser casing is the casing lowered into the shallow seabed from an offshore drilling platform. It primarily serves as the load-bearing structure at the wellhead, while also isolating seawater, withstanding lateral loads from sea ice or waves, forming a drilling fluid circulation channel, protecting the wellbore, the wellhead, and internal drilling and production facilities. Under normal operating conditions, the outer diameter of the riser casing couplings and joints is larger than the diameter of the connected pipe body. Therefore, offshore drilling platforms often use a combination of top drive and lifting clamps for hoisting and lowering casing and riser casing. However, for some special well conditions, where wellbore size limitations prevent the lowering of couplings or joints larger than the pipe body diameter, the lifting clamps used under normal operating conditions are not suitable for external flat riser casing joints. Therefore, there is an urgent need to conduct thorough research on the structural form, mechanical properties, and riser casing string of external flat riser casing joints, and to develop a dedicated lifting ring for external flat riser casing with practical application value. Utility Model Content

[0003] This utility model overcomes the shortcomings of the prior art and provides a special lifting ring for external flat water-proof sleeves.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The special lifting ring for external flat water-proof sleeve includes: a first body, a second body and a lifting handle. The first body and the second body are each provided with one or more lifting handles. The first body and the second body are hinged at the ends to form an openable and closable closed ring structure. The free ends of the first body and the second body are detachably and fixedly connected by a fixing device.

[0006] The first and second main bodies have the same structure, both being arc-shaped.

[0007] Both the first and second main body structures have protrusion structures on their inner sidewalls, and the protrusion structures on the first and second main body structures cooperate with each other to form an annular protrusion structure.

[0008] The number of boss structures in the first and second main structures is 2 sets.

[0009] The boss structures of the first and second main bodies have the same structure, both being boss structures with right-angled trapezoidal cross-sections.

[0010] The first and second main bodies are respectively provided with a first cylindrical boss and a second cylindrical boss at their hinge ends. Both the first and second cylindrical bosses are provided with connecting holes, and the two connecting holes are hinged together by bolts.

[0011] The fastener includes a first connecting protrusion and a second connecting protrusion, which are respectively disposed on the first body and the second body. Both the first connecting protrusion and the second connecting protrusion are provided with connecting holes, and fixing bolts are detachably disposed in the connecting holes of the first connecting protrusion and the second connecting protrusion.

[0012] The fixture includes a limiting step and a stop hook. The limiting step is fixedly installed on the first main body, and the base of the stop hook is installed on the second main body. One end of the hook body of the stop hook is rotatably connected to the base of the stop hook, and the other end of the hook body of the stop hook matches the limiting step. The hook body of the stop hook and the base of the stop hook are respectively provided with limiting grooves, and a stop pin is detachably provided in the limiting groove.

[0013] The base of the stop hook is rotatably equipped with a connecting gripping rod, which has a limiting groove that matches the limiting groove on the stop hook.

[0014] The beneficial effects of this utility model are as follows: This solution adopts a double-stage right-angled trapezoidal boss embedded in an outer flat water-proof casing connection method, which has a simple structure, high strength, and is compatible with outer flat, coupling-free water-proof casings, meeting the needs of special well conditions. Simultaneously, the lifting ring adopts a hinge structure, simplifying the installation steps. It uses a stop hook for connection and a locking pin for locking, greatly shortening operation time and improving efficiency. The lifting handle and connecting grip bar effectively improve the operability of the lifting ring, enhance interaction with personnel, and offer fast connection speed and low operating costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the first main body in Embodiment 2 of this utility model;

[0017] Figure 3 This is a structural diagram of the boss structure;

[0018] Figure 4 This is a schematic diagram of the fixture in Example 3;

[0019] In the figure: 1. First main body; 101. First cylindrical boss; 2. Second main body; 201. Second cylindrical boss; 3. Lifting handle; 4. Boss structure; 5. First connecting protrusion; 6. Second connecting protrusion; 7. Fixing bolt; 8. Limiting step; 9. Stop hook; 10. Limiting groove; 11. Connecting grip bar. Detailed Implementation

[0020] Example 1

[0021] The special lifting ring for external flat water-proof sleeve includes: a first body 1, a second body 2 and a lifting handle 3. The first body 1 and the second body 2 are each provided with one or more lifting handles 3. The first body 1 and the second body 2 are connected at the ends to form an openable and closable closed ring structure. The free ends of the first body 1 and the second body 2 are detachably and fixedly connected by a fixing device.

[0022] The first main body 1 and the second main body 2 have the same structure, both being arc-shaped.

[0023] Both the first main body 1 and the second main body 2 have protrusion structures 4 on their inner sidewalls. The protrusion structures 4 on the first main body 1 and the second main body 2 cooperate with each other to form an annular protrusion structure 4.

[0024] The number of boss structures 4 in the first main body 1 and the second main body 2 is 2 sets.

[0025] The boss structure 4 of the first main body 1 and the second main body 2 has the same structure, both being boss structures 4 with a right-angled trapezoidal cross section.

[0026] The first main body 1 and the second main body 2 are respectively provided with a first cylindrical boss 101 and a second cylindrical boss 201 at their hinge ends. Both the first cylindrical boss 101 and the second cylindrical boss 201 are provided with connecting holes, and the two connecting holes are hinged by bolts.

[0027] The working principle of this utility model is as follows: This device achieves hinged connection by setting bolts on the connecting holes of the first cylindrical boss 101 and the second cylindrical boss 201, allowing it to open and close to form a closed annular structure. In use, the components can be delivered to the construction site for assembly. After connecting the first main body 1 and the second main body 2, they are merged to form an annular sleeve structure, which is then fixed using a fixing device to the corresponding lifting ring groove position of the water-tight sleeve joint that needs to be lifted. The user lifts the device using the lifting handle 3.

[0028] Furthermore, in order to increase friction, a boss structure 4 is provided. The boss structure 4 adopts a two-group design, and its cross-section adopts a right-angled trapezoidal cross-section, which is more conducive to stress.

[0029] Example 2

[0030] Based on Embodiment 1, the fastener includes a first connecting protrusion 5 and a second connecting protrusion 6. The first connecting protrusion 5 and the second connecting protrusion 6 are respectively disposed on the first body 1 and the second body 2. Both the first connecting protrusion 5 and the second connecting protrusion 6 are provided with connecting holes. Fixing bolts 7 are detachably provided in the connecting holes of the first connecting protrusion 5 and the second connecting protrusion 6.

[0031] like Figures 1-3 As shown, in this embodiment, the fastener achieves a detachable connection by using connecting holes in the first connecting protrusion 5 and the second connecting protrusion 6 to cooperate with the fixing bolt 7.

[0032] Example 3

[0033] Based on Embodiment 1, the fixture includes a limiting step 8 and a stop hook 9. The limiting step 8 is fixedly mounted on the first main body 1, and the base of the stop hook 9 is mounted on the second main body 2. One end of the hook body of the stop hook 9 is rotatably connected to the base of the stop hook 9, and the other end of the hook body of the stop hook 9 is matched with the limiting step 8. The hook body of the stop hook 9 and the base of the stop hook 9 are respectively provided with limiting grooves 10, and a stop pin is detachably provided in the limiting groove 10.

[0034] like Figure 4 As shown, this embodiment differs from embodiment 2 in that it uses a combination of a limiting step 8 and a stop hook 9 for fixation. The hook body of the stop hook 9 can rotate on the base of the stop hook 9. When the head of the hook body hooks the limiting step 8, a stop pin is inserted into the limiting groove 10. The stop pin passes through the limiting groove 10 provided on the base and the hook body of the stop hook 9, limiting the hook body and the base and preventing the hook body from rotating, thus achieving the locking of the limiting step 8 and the stop hook 9.

[0035] Furthermore, a connecting gripper 11 is rotatably mounted on the base of the stop hook 9. The connecting gripper 11 has a limiting groove 10 that matches the limiting groove 10 on the stop hook 9. The connecting gripper 11 is used by the user when assembling the first body 1 and the second body 2 into a ring structure. The user moves the free end of the second body 2 by gripping the connecting gripper 11. For ease of fixation, the connecting gripper 11 also has a limiting groove 10, allowing a stop pin to be inserted into it, thus simultaneously limiting the position of the connecting gripper 11.

[0036] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A special lifting ring for external flat-type water-tight sleeves, characterized in that: include: The first body, the second body, and the lifting handle are provided. The first body and the second body are provided with one or more lifting handles. The first body and the second body are hinged at the ends to form an openable and closable closed ring structure. The free ends of the first body and the second body are detachably and fixedly connected by a retainer.

2. The lifting ring for the external flat-type water-tight sleeve according to claim 1, characterized in that: The first main body and the second main body have the same structure, both being arc-shaped.

3. The special lifting ring for external flat water-tight sleeve according to claim 2, characterized in that: Both the first main body and the second main body structure have boss structures on their inner sidewalls, and the boss structures on the first main body and the second main body structure cooperate with each other to form an annular boss structure.

4. The special lifting ring for external flat-type water-tight sleeve according to claim 2, characterized in that: The number of boss structures in the first main body and the second main body is 2 sets.

5. The lifting ring for the external flat-type water-tight sleeve according to claim 2, characterized in that: The boss structures of the first main body and the second main body are identical, both being boss structures with a right-angled trapezoidal cross section.

6. The special lifting ring for external flat-type water-tight sleeve according to claim 1, characterized in that: The first body and the second body are respectively provided with a first cylindrical boss and a second cylindrical boss at their hinge ends. Both the first cylindrical boss and the second cylindrical boss are provided with connecting holes, and the two connecting holes are hinged by bolts.

7. The special lifting ring for external flat-type water-tight sleeve according to claim 1, characterized in that: The fastener includes a first connecting protrusion and a second connecting protrusion, which are respectively disposed on the first body and the second body. Both the first connecting protrusion and the second connecting protrusion are provided with connecting holes, and fixing bolts are detachably disposed in the connecting holes of the first connecting protrusion and the second connecting protrusion.

8. The special lifting ring for external flat-type water-tight sleeve according to claim 1, characterized in that: The fixture includes a limiting step and a stop hook. The limiting step is fixedly installed on the first main body, and the base of the stop hook is installed on the second main body. One end of the hook body of the stop hook is rotatably connected to the base of the stop hook, and the other end of the hook body of the stop hook matches the limiting step. The hook body of the stop hook and the base of the stop hook are respectively provided with limiting grooves, and a stop pin is detachably provided in the limiting groove.

9. The special lifting ring for external flat-type water-tight sleeve according to claim 1, characterized in that: The base of the stop hook is rotatably provided with a connecting hand gripping rod, which has a limiting groove that matches the limiting groove on the stop hook.

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