Reverse cross-core salvage cable quick connector

Abstract

The utility model discloses a reverse cross-core fishing cable quick connector, which comprises a male joint and a female joint, two ends of the male joint and the female joint are respectively provided with a fixing mechanism for fixing a cable, each fixing mechanism comprises a body, and a left clamping plate and a right clamping plate which can be clamped on two sides of the cable are arranged in the body. A connecting part is arranged at the end, close to the large-diameter opening of the conical face, of the body, a male butt joint part connected with the connecting part is arranged at one end of the male connector, a male quick connecting part connected with the female connector is arranged at the other end of the male connector, and a female butt joint part connected with the connecting part is arranged at one end of the female connector. And the other end of the female joint is provided with a female quick connection part connected with the male joint. The two ends of the adjacent cables are fixed through the two fixing mechanisms, then the cables are rapidly connected through the male connector and the female connector, repeated use can be achieved, the connecting efficiency is high, and the fishing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil drilling, especially to a reverse through core fishing cable quick connector. BACKGROUND

[0002] With the increase of directional well, high-inclination well and ultra-deep well, due to the complexity of wellbore and the limitation of drilling engineering design, the logging instrument and cable are often stuck in the downhole in geophysical logging. Reverse through core fishing is a specific fishing method derived from through core fishing. When the instrument has been released but the fishing tool cannot catch the instrument or it is not sure whether the fishing tool has caught the instrument, in order to ensure the success of fishing, the cable and drill string are synchronously pulled up, and the cable and drill string need to be reverse through. When the cable and drill string are synchronously pulled up, the drill string of each column needs to be cut to facilitate the operation. In the current operation, in order to connect the fishing drill string, a device is needed to quickly connect the cut cable at the wellhead. Most of the existing cable quick connectors use cable fishing double-cone sleeve connectors. The steel wires of the cable need to be clamped in the two annuli composed of the double-cone sleeve and the cable cap on site, and a hammer and a flushing pipe are used to fix them on site. This cable connector has complex on-site manufacturing process, takes a long time, cannot be reused, has many accessories, and cannot meet the needs of making a cable quick connector for each column of drill string during reverse through core fishing. SUMMARY

[0003] The utility model aims at avoiding the defects of the prior art, and provides a reverse through core fishing cable quick connector, so as to effectively solve the defects in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme: a reverse through core fishing cable quick connector, comprising a male connector and a female connector, both ends of the male connector and the female connector are provided with a fixing mechanism for fixing the cable, the fixing mechanism comprises a body, the inside of the body is provided with a left clamping plate and a right clamping plate which can be clamped on both sides of the cable, the inside of the body is provided with a conical surface, the outside of the left clamping plate and the right clamping plate is matched with the conical surface of the body, one end of the body near the large-diameter opening of the conical surface is provided with a connecting part, one end of the male connector is provided with a male butt joint part connected with the connecting part, the male butt joint part is pressed on the left clamping plate and the right clamping plate, the other end of the male connector is provided with a male quick joint part connected with the female connector, one end of the female connector is provided with a female butt joint part connected with the connecting part, the female butt joint part is pressed on the left clamping plate and the right clamping plate, the other end of the female connector is provided with a female quick joint part connected with the male connector.

[0005] Further, the male quick connecting part comprises a connecting column and a clamping ball, the female quick connecting part comprises a vertical clamping cavity provided with the clamping ball, a horizontal cavity is arranged on the bottom side of the clamping cavity and used for allowing the clamping ball to enter, a through cavity is arranged on the top of the clamping cavity and used for matching the connecting column, the diameter of the through cavity is smaller than that of the clamping ball, and a swing cavity is arranged between the through cavity and the horizontal cavity, and the width of the swing cavity is smaller than the diameter of the clamping ball.

[0006] Further, an ejection mechanism is arranged on the body and used for ejecting the left clamping plate and the right clamping plate, the ejection mechanism comprises a rotating head rotatably arranged on the body, and a top pipe is screwed in the rotating head and has a vertical first limiting slot arranged on the side wall of the top pipe.

[0007] Further, a horizontal second limiting slot is arranged on the outer periphery of the rotating head, and a second limiting rod is arranged on the body and extends to the second limiting slot.

[0008] Further, the male joint and the female joint are provided with a middle groove used for allowing the cable to extend in, and a through groove is arranged on the middle groove and penetrates to the outside of the male joint / female joint.

[0009] Further, the left clamping plate is provided with a positioning convex, and the right clamping plate is provided with a positioning slot matched with the positioning convex.

[0010] The above technical scheme of the utility model has the following beneficial effects: the utility model uses two fixing mechanisms to fix the two ends of the adjacent cables, and then the male joint and the female joint are used for quick connection, the male joint and the female joint can be repeatedly used, the connection efficiency is high, and the fishing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a cross-sectional schematic view of the utility model embodiment;

[0012] Figure 2 It is Figure 1 It is an enlarged view of the middle A;

[0013] Figure 3 It is a cross-sectional schematic view of the female joint of the utility model embodiment;

[0014] Figure 4 It is a top view schematic view of the female joint of the utility model embodiment;

[0015] Figure 5 It is a cross-sectional schematic view of the left clamping plate and the right clamping plate of the utility model embodiment;

[0016] Figure 6 It is a top view schematic view of the left clamping plate and the right clamping plate of the utility model embodiment. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the present invention.

[0018] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "rear end," "front end," "head," and "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] like Figures 1-6 As shown, a reverse-core retrieval cable quick connector of this embodiment includes a male connector 1 and a female connector 2. Both ends of the male connector 1 and the female connector 2 are provided with a fixing mechanism for fixing the cable. The fixing mechanism includes a body 3. The body 3 is provided with a left clamping plate 4 and a right clamping plate 5 that can clamp the two sides of the cable. The body 3 is provided with a conical surface. The outer sides of the left clamping plate 4 and the right clamping plate 5 are provided with a conical surface to match the body 3. A connecting part 6 is provided at one end of the body 3 near the large diameter opening of the conical surface. One end of the male connector 1 is provided with a male mating part 7 that connects to the connecting part 6. The male mating part 7 presses on the left clamping plate 4 and the right clamping plate 5. The other end of the male connector 1 is provided with a male quick-connect part that connects to the female connector 2. One end of the female connector 2 is provided with a female mating part 8 that connects to the connecting part 6. The female mating part 8 presses on the left clamping plate 4 and the right clamping plate 5. The other end of the female connector 2 is provided with a female quick-connect part that connects to the male connector 1.

[0020] The salvage process involves lifting the cable and drill together, then removing the drill, securing the bottom of the cable, cutting off a section of the cable in the middle, connecting the upper and lower cable connectors with a connector, and then lifting the cable and drill together again. This process of lifting, removing the drill, and cutting the cable is repeated.

[0021] The method for using the connector is as follows: the two cable joints are respectively inserted into the two bodies 3, the cable joints are clamped by the left clamping plate 4 and the right clamping plate 5, then the left clamping plate 4 and the right clamping plate 5 are inserted into the body 3, the left clamping plate 4 and the right clamping plate 5 are matched with the body 3 through the conical surface, so that the left clamping plate 4 and the right clamping plate 5 gradually clamp the cable, then the male joint 1 and the female joint 2 are respectively connected at the connecting part 6 of the two bodies 3, the male joint 1 and the female joint 2 press the corresponding left clamping plate 4 and right clamping plate 5, so that the left clamping plate 4 and the right clamping plate 5 maintain the clamping state of the cable, then the male quick connecting part and the female quick connecting part are connected, so that the cable can be quickly connected, and the next cable lifting action can be performed;

[0022] Preferably, the male quick connecting part comprises a connecting column 9 and a clamping ball 10, the female quick connecting part comprises a vertical clamping cavity 11 matched with the clamping ball 10, the bottom side of the clamping cavity 11 is provided with a horizontal cavity 12 for the clamping ball 10 to enter, the top of the clamping cavity 11 is provided with a through cavity 13 matched with the connecting column 9, the diameter of the through cavity 13 is smaller than that of the clamping ball 10, and a swing cavity 14 is arranged between the through cavity 13 and the horizontal cavity 12, the width of the swing cavity 14 is smaller than the diameter of the clamping ball 10, when connecting, the clamping ball 10 of the male joint 1 enters the clamping cavity 11 from the horizontal cavity 12, at this time, the connecting column 9 enters the through cavity 13 from the through cavity 13, then the male joint 1 is lifted, the clamping ball 10 enters the upper side of the clamping cavity 11, and the position of the clamping ball 10 from the horizontal cavity 12 can avoid the clamping ball 10 from being horizontally separated from the clamping cavity 11, so that the stability is improved;

[0023] Preferably, the end of the body 3 away from the connecting part 6 is provided with an ejection mechanism for ejecting the left clamping plate 4 and the right clamping plate 5, the ejection mechanism comprises a rotating head 15 rotatably arranged on the body 3, a top pipe 16 is screwed in the rotating head 15, the side wall of the top pipe 16 is provided with a vertical first limiting groove 17, and the body 3 is provided with a first limiting rod 18 extending to the first limiting groove 17; the first limiting rod 18 is inserted outside the body 3, the rotating head 15 and the top pipe 16 form a lead screw structure, the top pipe 16 is threadedly matched with the rotating head 15, the body 3 is matched with the first limiting rod 18 and the first limiting groove 17, the rotation of the top pipe 16 is limited, so that the vertical movement of the top pipe 16 can be realized, and when the left clamping plate 4 and the right clamping plate 5 need to be disassembled, the top pipe 16 can be vertically moved to eject the left clamping plate 4 and the right clamping plate 5;

[0024] Preferably, the outer periphery of the rotating head 15 is provided with a horizontal second limiting groove 19, the body 3 is provided with a second limiting rod 20 extending to the second limiting groove 19, and the second limiting rod 20 is inserted outside the body 3, and the axial movement of the rotating head 15 is limited through the cooperation of the second limiting rod 20 and the second limiting groove 19;

[0025] Preferably, the male connector 1 and the female connector 2 are provided with a middle groove 21 for the cable to extend into, the middle groove 21 is provided with a through groove 22 penetrating to the outside of the male connector 1 / female connector 2, the cable can extend into from the middle groove 21 and extend out from the through groove 22, when the cable connector enters the body 3 less, the middle groove 21 and the through groove 22 can also play a role in exhaust, avoiding the internal pressure being too large during the process of the male connector 1 / female connector 2 being installed in the body 3, thereby affecting the installation firmness;

[0026] Preferably, the left clamping plate 4 is provided with a positioning convex 23, and the right clamping plate 5 is provided with a positioning groove 24 matched with the positioning convex 23, so that the accuracy of cooperation between the left clamping plate 4 and the right clamping plate 5 is improved.

[0027] The embodiments of the present application are given for the purpose of example and description, and are not exhaustive or limit the present application to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present application and practical application, and to enable those of ordinary skill in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A back- through-the-heart fishing cable quick connector, characterized by: The utility model provides a cable fixing device, which comprises a male connector and a female connector, both ends of the male connector and the female connector are provided with fixing mechanisms for fixing cables, the fixing mechanisms comprise a body, the inside of the body is provided with left and right clamping plates capable of clamping on both sides of the cables, the inside of the body is provided with a tapered surface, the outside of the left and right clamping plates is matched with the tapered surface of the body, one end of the body near the large-diameter opening of the tapered surface is provided with a connecting part, one end of the male connector is provided with a male counter-connection part connected with the connecting part, the male counter-connection part is pressed on the left and right clamping plates, the other end of the male connector is provided with a male quick connection part connected with the female connector, one end of the female connector is provided with a female counter-connection part connected with the connecting part, the female counter-connection part is pressed on the left and right clamping plates, the other end of the female connector is provided with a female quick connection part connected with the male connector.

2. A back-pinch overshot running cable quick connector according to claim 1, characterized in that: The male quick connection part comprises a connecting column and a ball, the female quick connection part comprises a vertical ball cavity matched with the ball, the bottom side of the ball cavity is provided with a horizontal cavity for the ball to enter, the top of the ball cavity is provided with a through cavity matched with the connecting column, the diameter of the through cavity is smaller than that of the ball, a swing cavity is arranged between the through cavity and the horizontal cavity, and the width of the swing cavity is smaller than the diameter of the ball.

3. A back-pinch overshot cable quick connector according to claim 1, wherein: One end of the body away from the connecting part is provided with an ejection mechanism for ejecting the left and right clamping plates, the ejection mechanism comprises a rotating head rotatably arranged on the body, a top pipe is screwed in the inside of the rotating head, the side wall of the top pipe is provided with a vertical first limiting groove, and the body is provided with a first limiting rod extending to the first limiting groove.

4. A back-pinch overshot running cable quick connector according to claim 3, characterized in that: The outer periphery of the rotating head is provided with a horizontal second limiting groove, and the body is provided with a second limiting rod extending to the second limiting groove.

5. A back-pinch overshot cable quick connector according to claim 1, wherein: The male connector and the female connector are both provided with a middle groove for the cables to extend into, and the middle groove is provided with a through groove penetrating to the outside of the male connector / female connector.

6. A back-pinch overshot cable quick connector according to claim 1, wherein: The left clamping plate is provided with a positioning convex, and the right clamping plate is provided with a positioning groove matched with the positioning convex.

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