Wellhead cable quick-matching device and cable connecting structure thereof

Abstract

The utility model discloses a wellhead cable quick-matching device and a cable connecting structure thereof, which belong to the technical field of cable connection and comprise a first connecting assembly and a second connecting assembly movably connected with the first connecting assembly. Wherein the first connecting assembly is connected with an underground cable, and the second connecting assembly is connected with a ground cable; the first connecting assembly comprises a first connector and a first connecting channel arranged in the first connector. A reverse twisting groove is formed in the first connecting channel, a reverse twisting key matched with the reverse twisting groove is arranged on the periphery of the second connecting assembly, and the reverse twisting key is matched with the reverse twisting groove and used for locking the second connecting assembly in the first connecting channel in the radial direction. According to the utility model, the technical problem of slow pairing of the above-well cable and the underground cable is solved, and the technical effect of fast pairing and locking of the above-well cable and the underground cable is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of cable joints, in particular to a wellhead cable quick-matching device and a cable connection structure thereof. Background Art

[0002] In the process of oil extraction, various sensors and equipment are usually installed at the wellhead, such as sensors, pumps, valves, etc., to monitor the bottom of the well, collect data or control operations. These devices need to be connected to the ground control system to monitor the bottom of the well in real time and control it. The wellhead cable connection device is an important component used to connect the wellhead equipment and the ground control system to ensure that signal transmission, data collection and control can be carried out normally and effectively in the oil wellhead.

[0003] In the prior art, when connecting the uphole cable with the downhole cable, the operation is relatively complicated, and the uphole cable and the downhole cable cannot be quickly connected at the wellhead, which not only increases the operating intensity of the operator, but also increases the work cycle. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a cable connection structure in a first aspect, comprising:

[0005] A first connecting component, and a second connecting component movably connected to the first connecting component;

[0006] Wherein, the first connection component is connected to the downhole cable, and the second connection component is connected to the uphole cable;

[0007] The first connection assembly includes: a first connection head, a first connection channel provided in the first connection head;

[0008] A detwist groove is provided in the first connecting channel, and a detwist key matching the detwist groove is provided on the outer periphery of the second connecting component. The detwist key and the detwist groove cooperate with each other to radially lock the second connecting component in the first connecting channel.

[0009] In some embodiments, a plurality of groups of electrode heads are disposed in the first connecting channel, and the electrode heads are L-shaped structures adapted to the first connecting channel.

[0010] In some embodiments, the second connecting component is provided with a plurality of second connecting channels adapted to the electrode head, a connecting ring is provided on one end of the electrode head connected to the second connecting component, and an elastic contact piece adapted to the electrode head is provided in the second connecting channel, and the elastic contact piece is used to axially lock the second connecting component in the second connecting channel.

[0011] In some embodiments, the anti-twist groove is fan-shaped.

[0012] In some embodiments, the first connection assembly further comprises: a cable fixing member disposed in the first connection channel,

[0013] The cable fixing piece is connected to one end of the downhole cable and is used to connect the downhole cable to the wellhead and fix it in the first connecting channel.

[0014] A second aspect of the utility model provides a wellhead cable quick-matching device, comprising the cable connection structure described in any one of the above solutions.

[0015] By adopting the above technical solution, the utility model mainly has the following technical effects:

[0016] The second connecting component is radially locked in the first connecting channel by the cooperation between the anti-twist key and the anti-twist groove; the connecting ring is limited by the elastic contact piece after the deformation is restored, and the first connecting component is axially locked in the second connecting channel, which solves the technical problem of slow pairing of the surface cable and the downhole cable and achieves the technical effect of quickly pairing and locking the surface cable and the downhole cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a cable connection structure of the utility model;

[0018] Figure 2 This is a structural schematic diagram of a first connecting component in a cable connecting structure of the utility model;

[0019] Figure 3 This is a structural schematic diagram of a second connecting component in a cable connecting structure of the utility model;

[0020] Figure 4 for Figure 3 Sectional view in the middle BB direction;

[0021] Figure 5 for Figure 3 Enlarged view of part A.

[0022] The meanings of the reference numerals are as follows:

[0023] 1. first connecting assembly; 11. first connecting head; 12. first connecting channel; 121. electrode head; 1211. connecting ring; 122. anti-twist groove; 13. cable fixing piece;

[0024] 2. Second connecting component; 21. Anti-twist key; 22. Second connecting channel; 221. Elastic contact piece. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the specification of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] Embodiment 1

[0028] See also Figure 1-Figure 5 The first aspect of the utility model provides a cable connection structure. In practical application, the cable connection mechanism is used to connect an uphole cable with a downhole cable, and includes: a first connection component 1, and a second connection component 2 movably connected to the first connection component 1, wherein the first connection component 1 is connected to the downhole cable, and the second connection component 2 is connected to the uphole cable. It should be noted that in the utility model, the axial direction refers to the direction of the rotation center axis of the second connection component 2, that is, the direction common to the center axis, and the radial direction is perpendicular to the axial direction.

[0029] In some embodiments, the first connecting component 1 includes: a first connecting head 11, a first connecting channel 12 provided in the first connecting head 11, and a cable fixing part 13 provided in the first connecting channel 12, wherein the first connecting channel 12 is an L-shaped structure for accommodating downhole cables and pulling the downhole cables to the wellhead. In one embodiment, a plurality of groups of electrode heads 121 are provided in the first connecting channel 12, and the electrode heads 121 are L-shaped structures adapted to the first connecting channel 12, wherein the vertically arranged part thereof is connected to the downhole cable, and the horizontally arranged part thereof is connected to the second connecting component 2, thereby realizing the detachable connection process between the first connecting component 1 and the second connecting component 2.

[0030] In one embodiment, the cable fixing member 13 is connected to one end of the downhole cable, so as to connect the downhole cable to the wellhead and fix it in the first connecting channel 12 .

[0031] Furthermore, the second connecting component 2 is a part that connects the well cable to the wellhead, and the communication process between the well equipment and the downhole equipment is realized by connecting the second connecting component 2 to the first connecting component 1. The second connecting component 2 is a cylindrical structure, and the second connecting component 2 can be connected to the first connecting component 1 by plugging the second connecting component 2 into the first connecting component 1.

[0032] In some embodiments, a fan-shaped anti-twist groove 122 is provided in the first connecting channel 12, and an anti-twist key 21 adapted to the anti-twist groove 122 is provided on the outer periphery of the second connecting component 2. The anti-twist key 21 and the anti-twist groove 122 cooperate with each other to radially lock the second connecting component 2 in the first connecting channel 12. On the one hand, it prevents the second connecting component 2 from rotating freely in the first connecting channel 12, and on the other hand, it can also realize the positioning of the second connecting component 2 in the first connecting channel 12.

[0033] In some embodiments, a plurality of second connecting channels 22 compatible with the electrode head 121 are provided in the second connecting component 2, and a connecting ring 1211 is provided on one end of the electrode head 121 connected to the second connecting component 2, and an elastic contact piece 221 compatible with the electrode head 121 is provided in the second connecting channel 22. By providing the elastic contact piece 221 in the second connecting channel 22, when the second connecting component 2 is plugged into the electrode head 121, the connecting ring 1211 first enters the second connecting channel 22, and then contacts the elastic contact piece 221 to compress and deform the elastic contact piece 221 and then continues to move forward. Finally, after the connecting ring 1211 passes through the elastic contact piece 221, the elastic contact piece 221 will limit the connecting ring 1211 after recovering the deformation, so that the second connecting component 2 is axially locked in the second connecting channel 22 by using the electrode head 121, thereby realizing the automatic quick locking function after the first connecting component 1 is connected to the second connecting component 2.

[0034] Embodiment 2

[0035] A second aspect of the utility model provides a wellhead cable quick-matching device, comprising the cable connection structure described in the first embodiment.

[0036] Finally, it should be noted that the embodiments of the present invention disclose only preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A cable connection structure, characterized in that: include: A first connecting component, and a second connecting component movably connected to the first connecting component; Wherein, the first connection component is connected to the downhole cable, and the second connection component is connected to the uphole cable; The first connection assembly includes: a first connection head, a first connection channel provided in the first connection head; A detwist groove is provided in the first connecting channel, and a detwist key matching the detwist groove is provided on the outer periphery of the second connecting component. The detwist key and the detwist groove cooperate with each other to radially lock the second connecting component in the first connecting channel.

2. A cable connection structure according to claim 1, characterized in that: A plurality of groups of electrode heads are arranged in the first connecting channel, and the electrode heads are L-shaped structures adapted to the first connecting channel.

3. A cable connection structure according to claim 2, characterized in that: The second connecting component is provided with a plurality of second connecting channels adapted to the electrode head, a connecting ring is provided on one end of the electrode head connected to the second connecting component, and an elastic contact piece adapted to the electrode head is provided in the second connecting channel, and the elastic contact piece is used to axially lock the second connecting component in the second connecting channel.

4. A cable connection structure according to claim 1, characterized in that: The anti-twist groove is fan-shaped.

5. The cable connection structure according to claim 1, characterized in that: The first connection assembly further comprises: a cable fixing member arranged in the first connection channel, The cable fixing piece is connected to one end of the downhole cable and is used to connect the downhole cable to the wellhead and fix it in the first connecting channel.

6. A wellhead cable quick-matching device, characterized in that: The invention comprises the cable connection structure according to any one of claims 1 to 5.

Images