Clamping plate type rope socket

Abstract

The utility model relates to a clamping plate type rope socket which comprises a body, a steel wire clamping plate and a lower connector. The body is a main part for connecting the steel wire clamping plate and the lower joint, a fishing neck is arranged at the upper end of the body, a through hole is formed in the body for a steel wire rope to penetrate through, the steel wire clamping plate is mounted in the body, and threads matched with the lower joint are arranged at the tail end of the body; the steel wire clamping plate is divided into two parts which are connected through a bolt; threads are arranged at the steel wire clamping positions in the steel wire clamping plates, friction force is increased, and the steel wires can be effectively prevented from falling off. The lower connector is installed at the tail of the body and connected with the body through threads, and installation is simple and fast. The device is convenient to mount, dismount, operate and use, saves time for tripping in a tool string on site, reduces potential safety hazards, and improves production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to downhole tool technical field especially is involved in a kind of clamping plate type rope cap, it is a kind of new equipment of connecting downhole testing instrument and downhole tool, mainly for the steel wire rope or cable of less than 5 / 16 " specification, it is widely used in well completion, well logging, testing, workover operation. BACKGROUND

[0002] In the field of downhole operation, as the key component of connecting steel wire rope / cable and downhole tool string, the reliability of rope cap directly affects the safety and efficiency of operation. The current mainstream rope cap types include pear-shaped rope cap, slip type rope cap and part of simple binding type connecting device, but all have significant limitations:

[0003] Pear-shaped rope cap:

[0004] Complex installation: pear-shaped pin needs to be pressed into the rope cap body by hammering or special press, which has strong dependence on operating environment and equipment, and low efficiency in field operation;

[0005] High precision requirement: only suitable for steel wire rope diameter of specific tolerance range (usually ±0.1mm), if the steel wire is worn or the diameter deviation is out of limit, it is easy to cause clamping failure or pear-shaped pin jamming;

[0006] Difficult to disassemble: pear-shaped pin and body are interference fit, need to be knocked or heated to expand in reverse when disassembling, which is easy to damage steel wire rope and tool body, and has safety hazard.

[0007] Slip type rope cap:

[0008] Complex structure: adopt multiple slips and conical sleeve to cooperate, with many parts, high machining precision requirement (such as slip tooth shape needs to be precisely milled), and significant increase in production cost;

[0009] Poor adaptability: slip tooth shape is designed for specific steel wire diameter, if different specifications of steel wire are replaced, special slip needs to be matched, and the universality is insufficient;

[0010] Inconvenient to maintain: downhole mud or debris is easy to invade into the gap between slips, causing slip movement to be blocked, and difficult to disassemble after long-term use.

[0011] Binding type connection:

[0012] Low reliability: rely on manual binding or adhesive tape fixing, with insufficient tensile strength, easy to loosen and fall off under dynamic load;

[0013] Not suitable for high pressure environment: lack of sealing design, easy to cause connection failure due to material aging or corrosion in high temperature and high pressure well conditions

[0014] The above defects not only increase the operation cost and risk, but also restrict the modularization and rapid deployment capability of the downhole tool string. Therefore, a rope cap design with simple structure, strong adaptability and convenient disassembly is urgently needed to improve the reliability and efficiency of downhole operation. Utility model content

[0015] In view of the defects in the prior art, the utility model aims at providing a clamping plate type rope cap with simple structure, convenient disassembly and stable clamping to solve the above problems.

[0016] The utility model discloses the above utility model purpose is realized through the following technical scheme:

[0017] A clamping plate type rope cap, including body, steel wire clamping plate and lower joint, the steel wire clamping plate is installed in the cavity of the body, the lower joint is detachably fixed on one side of the body, the other side of the body away from the lower joint is internally opened along the axial direction and is provided with the threading hole that communicates outside and the cavity, and the steel wire clamping plate is used for clamping the steel wire or cable that enters the cavity from the threading hole.

[0018] As a further technical scheme of the utility model: the threading hole and the center hole of the steel wire clamping plate correspond, and are all steel wire through holes.

[0019] As a further technical scheme of the utility model: the upper end outside of the body is provided with a fishing neck.

[0020] As a further technical scheme of the utility model: the lower end inside of the body is provided with connecting threads, and the lower joint is screw-connected at the lower end of the body.

[0021] As a further technical scheme of the utility model: the steel wire clamping plate is divided into two halves, and the two halves are connected through a plurality of inner hexagonal cylindrical head bolts.

[0022] As a further technical scheme of the utility model: the two halves of the steel wire clamping plate are all provided with threads on the side close to each other, for increasing the friction to prevent the cable from falling off under the action of external force.

[0023] As a further technical scheme of the utility model: one end of the steel wire clamping plate is attached to the inner wall taper surface of the body, under the action of the steel wire rope, the center hole of the steel wire clamping plate is coaxial with the threading hole, the steel wire clamping plate is placed in the cavity of the body, and the steel wire or cable is fixed under the action of external force.

[0024] As a further technical scheme of the utility model: the body is matched with the steel wire clamping plate through the chamfered inclined surface.

[0025] As a further technical scheme of the utility model: the body is detachably fixed with a clamping screw, and the lower joint is fixed by using the clamping screw after being connected with the body.

[0026] In summary, the utility model has at least one of the following beneficial technical effects:

[0027] The utility model discloses a clamp type rope cap, simple structure, convenient installation and dismounting, through split type steel wire clamp plate and thread friction design, simplifies installation procedure, can complete clamping without special tool, effectively prevents steel wire from falling off, improves the safety and efficiency of downhole operation. Thread friction surface and taper surface cooperation structure improve clamping stability, adapt to different diameter steel wire rope. The body and lower joint are prevented from loosening by clamping screw, and the safety of downhole operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the whole structure schematic view of the utility model.

[0029] Figure 2 It is the utility model's sectional view.

[0030] Signs: 1, body, 11, threading hole, 12, fishing neck, 13, inner wall taper surface, 2, steel wire clamp plate, 3, lower joint, 4, inner hexagonal cylindrical head bolt, 5, clamping screw. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0032] In the description of the present application, it should be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. Embodiments

[0034] Reference Figure 1 And Figure 2 The utility model discloses a kind of clamping plate type rope caps, including body 1, steel wire clamping plate 2 and lower joint 3, steel wire clamping plate 2 is installed in the cavity of body 1, lower joint 3 is detachably fixed on one side of body 1, the other side inside of body 1 away from lower joint 3 is opened along the axial through communication with the threading hole 11 of cavity outside, steel wire clamping plate 2 is used to clamp the steel wire or cable that is passed into the cavity from threading hole 11.Steel wire or cable is passed into body 1, then clamped with steel wire clamping plate 2, steel wire clamping plate 2 is connected with internal hexagonal head screw, finally lower joint 3 is connected on body 1.

[0035] Threading hole 11 and the center hole of steel wire clamping plate 2 correspond, and are all steel wire through holes.The upper end outside of body 1 is provided with fishing neck 12.The lower end inside of body 1 is opened with connecting thread, and lower joint 3 is threadedly connected to the lower end of body 1.Steel wire clamping plate 2 is divided into two halves, and the two halves are connected by a plurality of internal hexagonal head bolts 4.The two halves of steel wire clamping plate 2 are both provided with threads on the side close to each other, to increase friction to prevent cable from falling off under external force.Body 1 is detachably provided with set screw 5, and lower joint 3 is fixed by set screw 5 after being connected to body 1.

[0036] The front end of lower joint 3 is threadedly connected to body 1, and lower joint 3 is fastened by set screw 5 after being connected to body 1, and the tail end of lower joint 3 is connected to a remaining tool string, and the connection mode of the tail of lower joint 3 needs to be matched with the tool string connected thereto.In order to prevent tripping, body 1 and lower joint 3 are provided with set screw 5 to fix lower joint 3.

[0037] One end of steel wire clamping plate 2 is attached to the inner wall taper surface 13 of body 1, under the action of steel wire rope, the center hole of steel wire clamping plate 2 is coaxial with threading hole 11, steel wire clamping plate 2 is placed in the cavity of body 1, and steel wire or cable is fixed under the action of external force.Body 1 is matched with steel wire clamping plate 2 by chamfered bevel.

[0038] The body 1 is the basic support of the clamp type rope cap, which is the fixed seat connecting the steel wire clamp plate 2 and the lower connector 3. The body 1 is provided with a fishing neck 12, which is convenient for fishing after the tool is lowered into the well. The steel wire clamp plate 2 is a steel wire rope or cable fixing device, which is divided into an upper half and a lower half, and the two parts are connected by an internal hexagonal cylindrical head screw. The lower connector 3 is a carrier connecting the clamp type rope cap and the remaining tool string.

[0039] First, the steel wire rope is threaded through the threading hole 11 in the body 1, and the steel wire clamp plate 2 is installed in the body 1. The steel wire clamp plate 2 is divided into two parts, and the two parts are connected by an internal hexagonal cylindrical head bolt 4. The steel wire rope or cable is placed in the middle. The steel wire clamp plate 2 has a thread at the position where the steel wire is clamped in the middle, which increases the friction. The end of the body 1 has a thread matched with the lower connector 3. The body 1 is provided with the lower connector 3, and the lower connector 3 and the body 1 are connected by a thread.

[0040] Assembly: The cable is threaded through the body 1, and the cable is placed in the steel wire clamp plate 2 and is pressed by the internal hexagonal cylindrical head bolt 4. The steel wire clamp plate 2 assembly is placed in the cavity of the body 1. It is ensured that the direction of the steel wire clamp plate 2 assembly is as shown in the figure, and the chamfered inclined surface is located at the matching chamfer of the body 1. The lower connector 3 and the body 1 are connected, and then the locking screw 5 is screwed in. The rope cap assembly is completed and is ready for use. Figure 2

[0041] Disassembly: The locking screw 5 is removed from the body 1. The steel wire clamp plate 2 is slid out of the body 1, and all the internal hexagonal cylindrical head bolts 4 are removed to release the cable. The tool disassembly is completed and is ready for cleaning.

[0042] The implementation principle of the utility model is: the utility model discloses a clamp type rope cap, which is simple in structure, convenient to install and disassemble, and is designed by a split type steel wire clamp plate 2 and thread friction, so that the installation process is simplified, clamping can be completed without special tools, steel wire falling is effectively prevented, and the safety and efficiency of downhole operation are improved. The thread friction surface and the taper surface cooperate to improve clamping stability and adapt to steel wire ropes of different diameters. The body 1 and the lower connector 3 are prevented from loosening by the locking screw 5, and the safety of downhole operation is ensured.

[0043] The embodiments of the specific embodiment are preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.​

Claims

1. A cleat of the splint type, characterized in that, The utility model provides a steel wire or cable fixing device, which comprises a body (1), a steel wire clamping plate (2) installed in a cavity of the body (1) and a lower connector (3) detachably fixed to one side of the body (1), wherein the other side of the body (1) away from the lower connector (3) is internally provided with a threading hole (11) penetrating through in the axial direction and connecting the cavity with the outside.

2. A cleat of the type defined in claim 1, characterized in that The threading hole (11) corresponds to the center hole of the steel wire clamping plate (2) and is a steel wire passing hole.

3. A cleat of the type defined in claim 1, characterized in that The upper end of the body (1) is externally provided with a fishing neck (12).

4. A cleat of the type defined in claim 1, characterized in that The lower end of the body (1) is internally provided with a connecting thread, and the lower connector (3) is threadedly connected to the lower end of the body (1).

5. A cleat of the type defined in claim 1, characterized in that The steel wire clamping plate (2) is divided into two halves, and the two halves are connected by a plurality of inner hexagonal head bolts (4).

6. A cleat of the type defined in claim 5, characterized in that The two halves of the steel wire clamping plate (2) are both internally provided with threads on the side close to each other, so as to increase the friction and prevent the cable from falling off under the action of external force.

7. A cleat of the type defined in claim 2, characterized in that One end of the steel wire clamping plate (2) is attached to the inner wall taper surface (13) of the body (1), and under the action of the steel wire rope, the center hole of the steel wire clamping plate (2) is coaxial with the threading hole (11), the steel wire clamping plate (2) is placed in the cavity of the body (1), and the steel wire or cable is fixed under the action of external force.

8. A cleat of the type defined in claim 1, characterized in that The body (1) is matched with the steel wire clamping plate (2) by a chamfered slope.

9. A cleat of the type defined in claim 1, characterized in that The body (1) is detachably provided with a set screw (5), and the lower connector (3) is fixed by the set screw (5) after being connected to the body (1).

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