CN221530823U - Wellhead cable quick connecting tool - Google Patents

Abstract

The utility model provides a well head cable quick connect tool, belong to cable connect tool field, including the body, taper sleeve and pressure cap, the cable fastening groove that has interior conical surface has been seted up respectively at body both ends, be provided with the central shaft hole of intercommunication each other between the cable fastening groove, the taper sleeve outside has the outer conical surface that corresponds with cable fastening groove inner conical surface structure, can cooperate to inlay in the cable fastening groove, cable shaft hole and elasticity stop slot have been seted up simultaneously on the taper sleeve, the cable leading-in hole has been seted up on the pressure cap, and can screw in the both ends of connection at the body, fully precession can support to push against the taper sleeve that pushes up and inlay in the cable fastening groove and inwards remove, make taper sleeve elasticity closure grip chucking target cable, operating method is simple, the process consuming time is shorter, can reduce well accuse risk, improve work efficiency, simultaneously, use the fastening bolt to implement the second grade extrusion to the target cable is fixed, further improve the joint strength of target cable, guarantee the reliability of connection, can improve cable butt joint connection speed by a wide margin in practical application.

Description

Wellhead cable quick connecting tool

Technical Field

The utility model relates to the field of cable connection tools, in particular to a wellhead cable quick connection tool.

Background

In the perforation operation process is pressed to the cable conveyer belt, can appear carrying the unexpected damage phenomenon of cable often, for example cable bending deformation on cable fishing head upper portion, cable skin steel wire fracture, cable steel armor is cut by accident etc. this kind of damage defect of carrying the cable can probably lead to carrying the cable to receive blocking or even meet the card at blowout preventer control head choke tube department, can't normally play well head with well logging tool string, forms the unable complex condition of closing the well. When the complex situation occurs in the pressurized perforating operation process, firstly, the blowout preventer at the lower end of the lubricator needs to be closed, the conveying cable and the tool string are temporarily hung and sealed on the blowout preventer, wellhead leakage and falling of the conveying cable and the tool string are prevented, then the blowout preventer and the lubricator are opened, the lubricator is disconnected, the conveying cable is cut off, and the conveying cable is connected again after damaged parts are removed. At present, a butt joint method of rope punching cards and outer layer steel wire winding is mainly adopted for connection of conveying cables, wherein the connection strength of the rope punching cards is low, the lower conveying cables and tool strings are at risk of falling off a well, the lower conveying cables and the tool strings cannot be used when the allowance of the conveying cables at the wellhead end is small, and the whole undamaged conveying cables can only be pulled out for cleaning and then are in butt joint, so that the time consumption is long, the efficiency is low, and the well control risk is increased. In addition, patent numbers 2013103801454 and 2010202711575 respectively disclose a connecting piece for low-voltage large-wire-diameter cables and a quick connecting structure for breaking high-voltage cables or high-voltage transmission lines, patent number 2019110912092 also discloses a multifunctional well completion cable butt joint device, but the connecting pieces or the connecting structures have the defects of complex structure, inconvenient use and long operation time, and the excessively complex structure is obviously not beneficial to ensuring the reliability of cable connection. Therefore, the well head cable quick connection tool with simple structure and convenient use is necessary to be researched and developed, and the problem of the prior art is solved.

Disclosure of utility model

The utility model aims to provide a wellhead cable quick connecting tool, which improves cable connection efficiency and ensures connection firmness and reliability.

A wellhead cable quick connect tool comprising: the taper sleeve comprises a body, a taper sleeve and a press cap; the whole body is of a columnar structure, two ends of the body are respectively provided with connecting external threads, and mutually symmetrical cable fastening grooves are formed, each cable fastening groove is provided with an inner conical surface with the inner diameter gradually increasing from inside to outside, and the cable fastening grooves formed at the two ends of the body are mutually communicated through a central shaft hole between the two; the outer side of the taper sleeve is provided with an outer conical surface, the outer conical surface corresponds to the inner conical surface of the cable fastening groove in a structure, the taper sleeve can be embedded in the cable fastening groove in a matched mode, the taper sleeve is provided with a cable shaft hole which is axially penetrated, the aperture of the cable shaft hole corresponds to the diameter of a target cable to be connected in a matched mode, meanwhile, the large-diameter end of the taper sleeve is provided with an elastic stop groove which is axially arranged, and the elastic stop grooves are uniformly distributed on the circumference of the section of the taper sleeve; the nut is provided with a connecting internal thread and is provided with a cable leading-in hole, the connecting internal thread and the connecting external thread structure on the body are mutually corresponding, the connecting internal thread and the connecting external thread structure on the body can be respectively connected and installed at two ends of the body in a threaded fit way, after connection and installation, the cable leading-in hole can be correspondingly communicated with a cable shaft hole embedded in the cable fastening groove, the nut is fully screwed in, the front end surface of the nut can be abutted against and embedded on the end surface of the large diameter end of the taper sleeve to push the taper sleeve to move inwards relative to the body, and through the interaction between the inner conical surface in the cable fastening groove and the outer conical surface on the taper sleeve, the elastic stop groove formed in the taper sleeve is elastically closed, and the whole taper sleeve generates adaptive deformation, and the cable shaft hole is radially contracted, so that a target cable embedded in the cable shaft hole is held.

In order to improve the coordination performance of the overall adaptive deformation of the taper sleeve, the elastic stop groove is preferably formed by a through stop groove penetrating through the radial side wall of the taper sleeve and a non-through stop groove which is formed in the outer circumferential surface of the taper sleeve and does not penetrate through the radial side wall of the taper sleeve, and the through stop groove and the non-through stop groove are uniformly distributed and formed in the section of the taper sleeve along the circumference according to an alternate arrangement rule.

In order to further improve the coordination performance of the overall adaptive deformation of the taper sleeve, the wellhead cable quick connecting tool is preferably provided with annular deformation grooves which are perpendicular to the elastic stop grooves and are distributed along the circumference of the outer circumference of the taper sleeve on the large-diameter end of the taper sleeve and the outer circumference of the taper sleeve.

The utility model provides a well head cable quick connect tool, is preferrably offered the fastening screw on the lateral surface of body, the fastening screw with the center shaft hole communicates perpendicularly the supporting device has fastening bolt in the fastening screw, fastening bolt screw thread fit is installed in the middle of the fastening screw, but precession is supported the top and is extruded the cooperation and inlay target cable in the center shaft hole, is right target cable carries out the secondary extrusion fixedly, improves the stability and the reliability of connecting the target cable.

The wellhead cable quick connection tool is characterized in that a wrenching stress surface is preferably arranged on the outer side face of the body, torque can be applied by utilizing wrenching tools such as a wrench, the body is controlled to rotate relative to the pressing cap, and the wellhead cable quick connection tool is convenient to detach or install.

The quick connecting tool for the wellhead cable has the advantages that the taper sleeve is abutted by the pressing cap, so that the taper sleeve is used for holding the target cable to realize the interconnection between two ends, the operation process can be completed only by screwing the pressing caps on the body respectively, the method is simple, the time consumption is short, the operation time of constructors at the wellhead can be greatly shortened, the well control risk is reduced, and the working efficiency is improved; meanwhile, the fastening bolt is matched with the body to laterally extrude the target cable, the target cable is subjected to secondary extrusion fixation, and the firmness and reliability of connection of the target cable are improved; the cable conveying belt perforating device is applied to the cable conveying belt perforating operation, the butt joint connection speed of cables can be greatly improved, a satisfactory solution is provided for complex engineering conditions in the belt perforating operation, smooth unfolding of subsequent work is guaranteed, and production efficiency is improved.

Drawings

Fig. 1 is a cross-sectional view of a wellhead cable quick connect tool configuration.

FIG. 2 is a cross-sectional view taken along section A-A in FIG. 1.

Fig. 3 is a top view of the wellhead cable quick connect tool.

Detailed Description

Further, the technical scheme of the utility model is specifically described with reference to specific embodiments and attached drawings.

The quick connecting tool for the wellhead cable is composed of a body 1, a taper sleeve 2, a press cap 3 and a fastening bolt 4 as shown in figures 1, 2 and 3; the body 1 is a cylindrical structure, two ends of the body are respectively provided with connecting external threads, the connecting external threads are respectively provided with a horn-shaped cable fastening groove 17 which is coaxial with the body 1 and faces outwards in a wide opening manner, 2 cable fastening grooves 17 are mutually communicated through a central shaft hole 11 of the body 1, an inner conical surface is arranged in the cable fastening groove 17,2 fastening screw holes are correspondingly provided on the outer side surface of the body 1, 2 fastening screw holes are respectively vertically communicated with the central shaft hole 11, and a spanner stress surface 16 capable of transmitting torque is also provided; the taper sleeve 2 is a taper structure body with an outer taper surface, the outer taper surface corresponds to an inner taper surface forming structure of the cable fastening groove 17, a cable shaft hole 12 penetrating through the taper sleeve 2 is formed along a central axis, an elastic stop groove 15 and an annular deformation groove 14 are formed along the axial direction and are formed along the circumference at the large-diameter end of the taper sleeve 2, the elastic stop groove 15 comprises 8 through stop grooves and 8 non-through stop grooves, the through stop grooves and the non-through stop grooves are formed on the section of the taper sleeve 2 along the circumference alternately and uniformly distributed, and the annular deformation grooves 14 and the elastic stop grooves 15 are vertically crossed; the press cap 3 is provided with a connecting internal thread and is provided with a cable leading-in hole 13, the two ends of the body 1 are respectively connected in a threaded fit manner, and the taper sleeve 2 which is embedded in the cable fastening groove 17 can be screwed in and propped against.

When the cable is blocked or blocked at a choke tube of a blowout preventer control head and a tool string cannot be normally pulled out of a wellhead, firstly closing a blowout preventer at the lower end of the blowout preventer, temporarily hanging and sealing the cable and the tool string on the blowout preventer, opening the blowout preventer and blowout preventer oil, disengaging the blowout preventer, cutting off a target cable 10 and removing damaged parts; then, the cable guide hole 13 formed on the press cap 3 and the cable shaft hole 12 formed on the taper sleeve 2 are respectively utilized, the press cap 3 and the taper sleeve 2 are correspondingly sleeved on the target cable 10 from 1 cutting heads, the cutting heads are inserted into the central shaft hole 11 of the body 1 and conveyed into the central shaft hole 11 until the cutting heads are conveyed to the axial central area of the body 1, then, the taper sleeve 2 is sequentially matched and embedded in a cable fastening groove 17 formed on the body 1, the press cap 3 is in threaded fit connection with the corresponding end of the body 1, the taper sleeve 2 is fully screwed into and abutted against the taper sleeve 2, the taper sleeve 2 is enabled to move towards the inner side of the body 1, adaptive deformation is simultaneously generated through the interaction of an outer conical surface and the conical surface in the cable fastening groove 17, the cable shaft hole 12 is contracted until the target cable 10 of the taper sleeve 2 is conveyed to the axial central area of the body 1, then, the corresponding fastening end 4 is correspondingly screwed into the corresponding end of the body 1, the corresponding fastening device 4 is screwed into the screw hole 4, the second-stage bolt is pressed and the target cable is fixedly pressed against the target cable 10; according to the same operation method as the above, the other 1 cutting head of the target cable 10 is fixed in two stages by using the taper sleeve 2 and the fastening screw 4 and is connected and installed at the other end of the body 1, so that the wellhead quick connection of the target cable 10 is completed, the operation method is simple, the connection strength is high, the performance is reliable, and the high efficiency and the safety of oilfield production operation can be ensured.

When the connection line of the target cable 10 needs to be conducted while the target cable 10 is connected, the press cap 3, the taper sleeve 2, the body 1, the taper sleeve 2 and the press cap 3 which are correspondingly arranged are sleeved on the target cable 10 from 1 cutting heads of the target cable 10 in sequence, then the other 1 cutting head of the target cable 10 is conducted and connected with the cutting heads, then the target cable 10 is returned relative to the body 1, the connection point of the target connector 10 is placed back on the axial center area of the body 1, then 2 taper sleeves 2 are correspondingly matched and embedded in cable fastening grooves 17 formed in two ends of the body 1 in sequence, the 2 press caps are respectively and in threaded fit connection with two ends of the body 1 in sequence, the two ends of the body 1 are respectively and rapidly connected and fastened with the target cable 10, finally the fastening screws 4 are respectively installed in fastening screw holes formed in the body 1 in a two-stage extrusion manner, the target cable 10 is fixed in a two-stage manner, and the target cable is rapidly connected, and the physical connection is achieved.

Claims (5)

1. A wellhead cable quick connect tool, comprising: the device comprises a body (1), a taper sleeve (2) and a press cap (3); the whole body (1) is of a columnar structure, two ends of the body are respectively provided with a connecting external thread, and mutually symmetrical cable fastening grooves (17) are formed, each cable fastening groove (17) is provided with an inner conical surface with the inner diameter gradually increasing from inside to outside, and the cable fastening grooves (17) at two ends are mutually communicated through a central shaft hole (11) between the two; the outer side of the taper sleeve (2) is provided with an outer conical surface, the outer conical surface corresponds to the inner conical surface of the cable fastening groove (17) in a structure, the taper sleeve (2) can be embedded in the cable fastening groove (17) in a matched mode, the taper sleeve (2) is provided with a cable shaft hole (12) which is axially penetrated, meanwhile, the large-diameter end of the taper sleeve (2) is also provided with an elastic stop groove (15) which is axially arranged, and the elastic stop grooves (15) are uniformly distributed on the circumference of the section of the taper sleeve (2); the nut (3) is provided with a connecting internal thread and a cable leading-in hole (13), the connecting internal thread and the connecting external thread structure on the body (1) are mutually corresponding, the nut can be respectively connected and installed at two ends of the body (1) in a threaded fit mode, after connection and installation, the cable leading-in hole (13) can be correspondingly communicated with a cable shaft hole (12) embedded in the cable fastening groove (17) on the taper sleeve (2), the nut (3) is fully screwed in, the front end face of the nut (3) can be abutted against and embedded on the end face of the large diameter end of the taper sleeve (2), the taper sleeve (2) is pushed to move inwards relative to the body (1), and through interaction between an inner conical surface in the cable fastening groove (17) and an outer conical surface on the taper sleeve (2), the elastic stop groove (15) formed in the taper sleeve (2) can be elastically closed, the whole taper sleeve (2) is enabled to generate adaptability, and the cable shaft hole (12) is contracted.

2. A wellhead cable quick connect tool as defined in claim 1 wherein: the elastic stop groove (15) is formed by a through stop groove penetrating through the radial side wall of the taper sleeve (2) and a non-through stop groove which is formed in the outer circumferential surface of the taper sleeve (2) and does not penetrate through the radial side wall of the taper sleeve (2), and the through stop groove and the non-through stop groove are uniformly distributed and formed in the section of the taper sleeve (2) along the circumference according to an alternate arrangement rule.

3. A wellhead cable quick connect tool as claimed in claim 2 wherein: the large-diameter end of the taper sleeve (2) and the outer circumferential surface of the taper sleeve (2) are provided with annular deformation grooves (14) which are perpendicularly crossed with the elastic stop grooves (15) and are circumferentially distributed along the outer circumferential surface of the taper sleeve (2).

4. A wellhead cable quick connect tool as claimed in any one of claims 1 to 3 wherein: the outer side surface of the body (1) is provided with a fastening screw hole which is vertically communicated with the central shaft hole (11), a fastening bolt (4) is arranged in the fastening screw hole in a matched mode, and the fastening bolt (4) is installed in the fastening screw hole in a threaded fit mode.

5. A wellhead cable quick connect tool as defined in claim 4 wherein: a wrenching stress surface (16) is arranged on the outer side surface of the body (1).