Wellhead cable quick-matching device

Abstract

The utility model discloses a wellhead cable quick-matching device, which belongs to the technical field of cable connection and comprises a fixing mechanism, a cable quick-matching mechanism, a cable quick-matching mechanism and a cable quick-matching mechanism. The first connecting mechanism is connected with an underground cable; the second connecting mechanism is connected with a ground cable; the first connecting mechanism is connected with the second connecting mechanism through the fixing mechanism; the fixing mechanism comprises a fixing piece, a first connecting channel and a second connecting channel, wherein the first connecting channel and the second connecting channel are arranged in the fixing piece. Wherein the first connecting channel is connected with the first connecting mechanism, the second connecting channel is connected with the second connecting mechanism, and the first connecting mechanism and the second connecting mechanism are connected at the joint of the first connecting channel and the second connecting channel. 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, and particularly relates to a quick cable matching device for a wellhead. Background Art

[0002] During the oil extraction process, various sensors and devices, such as sensors, pumps, valves, etc., are usually installed at the wellhead for monitoring the bottom hole conditions, collecting data or controlling operations. These devices need to be connected to the ground control system to monitor and control the bottom hole conditions in real time, and the wellhead cable connection device is an important component for connecting 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 on-well cable and the down-well cable, the operation is relatively complex, and it is impossible to quickly connect the on-well cable and the down-well cable at the wellhead, which will not only increase the operation intensity of the operators, but also increase the working cycle. Content of the Utility Model

[0004] To solve the above problems, the utility model provides a quick cable matching device for a wellhead, including:

[0005] A fixing mechanism, which is connected to the wellhead;

[0006] A first connection mechanism, which is connected to the down-well cable;

[0007] A second connection mechanism, which is connected to the on-well cable; the first connection mechanism and the second connection mechanism are connected through the fixing mechanism;

[0008] The fixing mechanism includes: a fixing piece, and a first connection channel and a second connection channel arranged in the fixing piece;

[0009] Wherein, the first connection channel is connected to the first connection mechanism, the second connection channel is connected to the second connection mechanism, and the first connection mechanism and the second connection mechanism are connected at the connection part of the first connection channel and the second connection channel.

[0010] Optionally, the first connection mechanism includes:

[0011] A first connection head, a third connection channel arranged in the first connection head and a cable fixing piece;

[0012] Wherein, the first connection head is connected to the fixing piece;

[0013] A guiding slideway adapted to the fixing piece is arranged on the outer periphery of the first connection head, and a guiding piece is arranged on the inner wall of the fixing piece, and the guiding piece cooperates with the guiding slideway to turn the first connection head to a preset orientation.

[0014] Optionally, the guiding slideway includes an inclined guiding section and a downward moving section connected to the guiding section and arranged vertically; wherein, after the guiding section abuts against the guiding member, it is used to guide the first connector to turn to a preset direction, and after the downward moving section abuts against the guiding member, it is used to guide the first connector to slide down to a preset position.

[0015] Optionally, the guiding slideway is an inverted Y-shaped structure arranged vertically.

[0016] Optionally, the guiding section is spiral.

[0017] Optionally, the third connection channel is an L-shaped structure, and a plurality of electrode heads are arranged in the third connection channel. The electrode heads are L-shaped structures adapted to the third connection channel;

[0018] A connecting ring is arranged at one end of the electrode head connected to the second connecting mechanism.

[0019] Optionally, a fan-shaped reverse twist groove is formed in the third connection channel;

[0020] The second connecting mechanism is a cylindrical structure, and a reverse twist key adapted to the reverse twist groove is arranged on the outer periphery of the second connecting mechanism. The reverse twist key and the reverse twist groove cooperate with each other to radially lock the second connecting mechanism in the second connection channel;

[0021] A plurality of fourth connection channels adapted to the electrode heads are formed in the second connecting mechanism.

[0022] Optionally, an elastic contact piece adapted to the electrode head is arranged in the fourth connection channel. The elastic contact piece is used to axially lock the second connecting mechanism in the second connection channel.

[0023] Optionally, the first connecting mechanism further includes: a first telescopic cylinder and a second telescopic cylinder; wherein, both the first telescopic cylinder and the second telescopic cylinder are hollow structures;

[0024] One end of the first telescopic cylinder is fixed in the fixing member;

[0025] One end of the first telescopic cylinder and the second telescopic cylinder that are connected to each other is a buckling structure.

[0026] Optionally, a connecting hole is formed in the first telescopic cylinder, and a fixing pin adapted to the connecting hole is arranged on the second telescopic cylinder. The fixing pin is connected to the connecting hole to lock the first telescopic cylinder and the second telescopic cylinder to each other.

[0027] By adopting the above technical solutions, the utility model mainly has the following technical effects:

[0028] The second connecting mechanism is radially locked in the second connecting channel through the cooperation of the anti-twist key and the anti-twist groove; after the elastic contact piece recovers its deformation, the connecting ring is limited, and the second connecting mechanism is axially locked in the second connecting channel, solving the technical problem of slow matching between the wellhead cable and the downhole cable, and achieving the technical effect of quickly matching and locking the wellhead cable and the downhole cable. Brief Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of a wellhead cable quick matching device of the present utility model;

[0030] Figure 2 It is a schematic partial structural diagram of a wellhead cable quick matching device of the present utility model;

[0031] Figure 3 It is a schematic structural diagram of the third connecting channel in a wellhead cable quick matching device of the present utility model;

[0032] Figure 4 It is a schematic structural diagram of the guiding slideway in a wellhead cable quick matching device of the present utility model;

[0033] Figure 5 It is a schematic structural diagram of the guiding slideway (another perspective) in a wellhead cable quick matching device of the present utility model;

[0034] Figure 6 It is a schematic structural diagram of the second connecting mechanism in a wellhead cable quick matching device of the present utility model;

[0035] Figure 7 It is a schematic structural diagram of the second connecting mechanism (another perspective) in a wellhead cable quick matching device of the present utility model;

[0036] Figure 8 is Figure 6 an enlarged view of part A in

[0037] Among them, the meanings of the reference numerals are as follows:

[0038] 1. Fixing mechanism; 11. Fixing piece; 12. First connecting channel; 13. Second connecting channel;

[0039] 2. First connecting mechanism; 21. First connecting head; 211. Fishing part; 212. Guiding slideway; 2121. Guiding section; 2122. Downward moving section; 22. Third connecting channel; 221. Electrode head; 2211. Connecting ring; 222. Anti-twist groove; 23. Cable fixing piece; 24. First telescopic cylinder; 241. Connecting hole; 25. Second telescopic cylinder; 251. Fixed pin;

[0040] 3. Second connecting mechanism; 31. Anti-twist key; 32. Fourth connecting channel; 321. Elastic contact piece. Detailed implementation manners

[0041] In order to enable those skilled in the art of this technology to better understand the solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the specification drawings in this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of this utility model.

[0042] Referring to "embodiments" herein means that the specific features, structures or characteristics described in conjunction with the embodiments can be included in at least one embodiment of this utility model. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0043] Please refer to Figures 1-8 , this utility model provides a wellhead cable quick matching device. When the wellhead cable quick matching device is actually applied, it is used to connect the downhole cable and the surface cable to realize the communication process between the surface equipment and the downhole equipment. It includes: a fixing mechanism 1, which is connected to the wellhead; a first connection mechanism 2, which is connected to the downhole cable; a second connection mechanism 3, which is connected to the surface cable; the first connection mechanism 2 and the second connection mechanism 3 are connected through the fixing mechanism 1. It should be noted here that in this utility model, the "axial direction" refers to the direction where the rotation center axis of the second connection mechanism 3 is located, that is, the direction common with the central axis, and the "radial direction" is perpendicular to the axial direction.

[0044] Furthermore, the fixing mechanism 1 is a part for detachably connecting the surface cable and the downhole cable, and it includes: a fixing member 11, and a first connection channel 12 and a second connection channel 13 arranged in the fixing member 11. In one embodiment, the fixing member 11 can be connected to the equipment at the wellhead, so as to arrange the fixing mechanism 1 at the wellhead.

[0045] In some embodiments, the first connection channel 12 is vertically arranged in the fixing member 11, the second connection channel 13 is horizontally arranged in the fixing member 11 and is connected to the first connection channel 12; wherein, the first connection channel 12 is connected to the first connection mechanism 2, and the second connection channel 12 is connected to the second connection mechanism 3, so as to connect the first connection mechanism 2 and the second connection mechanism 3 at the connection of the first connection channel 12 and the second connection channel 13, so as to realize the connection process of the surface cable and the downhole cable.

[0046] Further, the first connection mechanism 2 is the part for connecting the downhole cable to the wellhead, and it includes: a first connector 21, a third connection channel 22 provided in the first connector 21, and a cable fixing member 23; wherein, the first connector 21 is connected to the fixing member 11, and the cable fixing member 23 is connected to the downhole cable, thereby connecting the downhole cable to the wellhead.

[0047] In one embodiment, the top of the first connector 21 is a fishing part 211 that is wider at the top and narrower at the bottom. By designing the fishing part 211 as a funnel shape that is wider at the top and narrower at the bottom, on the one hand, the fishing part 211 is fixed to the top of the fixing member 11; on the other hand, the operator can also use fishing equipment to take out the first connection mechanism 2 from the fixing mechanism 1, repair and maintain the first connection mechanism 2, or install the first connection mechanism 2 in the fixing mechanism 1.

[0048] Further, the first connector 21 is a cylindrical structure, and a guiding slideway 212 adapted to the fixing member 11 is provided on its outer periphery. In one embodiment, a guiding member 111 is provided on the inner wall of the fixing member 11, and the guiding member 111 cooperates with the guiding slideway 212 to turn the first connector 11 to a preset orientation, so as to facilitate the subsequent docking of the first connection mechanism 2 and the second connection mechanism 3. The specific docking process will be further described below.

[0049] Further, the guiding slideway 212 includes an inclined guiding section 2121 and a downward moving section 2122 connected to the guiding section 2121 and arranged vertically; wherein, after the guiding section 2121 abuts against the guiding member 111, it is used to guide the first connector 11 to turn to a preset direction, and after the downward moving section 2122 abuts against the guiding member 111, it is used to guide the first connector 21 to slide down to a preset position. In one embodiment, the guiding member 111 is a guiding pin. After the guiding pin abuts against the guiding section 2121, under the action of the self - gravity of the first connector 21, the first connector 21 will turn along the setting direction of the guiding section 2121 until the guiding pin slides into the downward moving section 2122, so that the first connector 21 slides into the fixing member 11 along a preset direction; by presetting the length of the downward moving section 2122, the first connector 21 is slid down to a preset position in the fixing member 11.

[0050] In one embodiment, the guiding slideway 212 is a vertically arranged inverted Y - shaped structure. It can be understood that by setting the tops of the two guiding sections 2121 to be close to each other, after any section of the guiding slideway 212 abuts against the guiding pin, the guiding pin can finally slide into the downward moving section 2122, thereby ensuring that the first connector 21 can always slide into the fixing member 11 in a preset direction, and thus ensuring the accuracy when the first connection mechanism 2 and the second connection mechanism 3 are docked with each other.

[0051] In one embodiment, the guiding section 2121 is helical. By setting the guiding section 2121 to be helical, the first connector 21 can turn more smoothly.

[0052] Further, the third connection channel 22 is an L-shaped structure for accommodating downhole cables and pulling the downhole cables to the wellhead. In one embodiment, a plurality of electrode heads 221 are provided in the third connection channel 22. The electrode heads 221 are L-shaped structures adapted to the third connection channel 221. The vertically arranged part thereof is connected to the downhole cable, and the horizontally arranged part thereof is connected to the second connection mechanism 3, thereby realizing the detachable connection process between the first connection mechanism 2 and the second connection mechanism 3.

[0053] In one embodiment, the cable fixing member 23 is connected to one end of the downhole cable, thereby connecting the downhole cable to the wellhead and fixing it in the third connection channel 22.

[0054] Further, the first connection mechanism 2 further includes: a first telescopic cylinder 24 and a second telescopic cylinder 25; wherein, both the first telescopic cylinder 24 and the second telescopic cylinder 25 are hollow structures. The downhole cable sequentially passes through the hollow parts of the first telescopic cylinder 24 and the second telescopic cylinder 25 and then is connected to downhole equipment. Moreover, the first telescopic cylinder 24 and the second telescopic cylinder 25 have certain stiffness and hardness, which can effectively avoid mechanical collision damage to the downhole cable, thereby playing a certain protective role.

[0055] In one embodiment, one end of the first telescopic cylinder 24 is connected to the fixing member 11 through a fixing pin, thereby fixing the first telescopic cylinder 24 in the fixing mechanism 1. In one embodiment, the end of the first telescopic cylinder 24 far from the cable fixing member 22 is connected to the second telescopic cylinder 25. By movably connecting the first telescopic cylinder 24 and the second telescopic cylinder 25, by adjusting the position of the second telescopic cylinder 25, an operating space is reserved for connecting the downhole cable, thereby enhancing the practicability.

[0056] Further, the mutually connected ends of the first telescopic cylinder 24 and the second telescopic cylinder 25 are snap-fit structures, enabling the second telescopic cylinder 25 to slide along the first telescopic cylinder 24, thereby realizing the telescopic process after the first telescopic cylinder 24 and the second telescopic cylinder 25 are connected. In one embodiment, by making the mutually connected ends of the first telescopic cylinder 24 and the second telescopic cylinder 25 be snap-fit structures, the first telescopic cylinder 24 and the second telescopic cylinder 25 can realize the telescopic process after being connected, but will not separate.

[0057] In one embodiment, a connection hole 241 is formed in the first telescopic cylinder 24, and a fixing pin 251 adapted to the connection hole 241 is formed in the second telescopic cylinder 25. An operator can lock the first telescopic cylinder 24 and the second telescopic cylinder 25 to each other by connecting the fixing pin 251 with the connection hole 241.

[0058] Further, the second connecting mechanism 3 is a part for connecting an on-well cable to the wellhead. By connecting the second connecting mechanism 3 to the second connecting mechanism 3 in the fixing mechanism 1, the communication process between the on-well equipment and the down-hole equipment is realized. Among them, the second connecting mechanism 3 is of a cylindrical structure, and the second connecting mechanism 3 can be connected to the first connecting mechanism 2 in the fixing member 11 by inserting the second connecting mechanism 3 into the second connecting channel 13.

[0059] In some embodiments, a sector-shaped anti-twist groove 222 is formed in the third connecting channel 22, and an anti-twist key 31 adapted to the anti-twist groove 222 is formed on the outer periphery of the second connecting mechanism 3. The anti-twist key 31 and the anti-twist groove 222 cooperate with each other to radially lock the second connecting mechanism 3 in the second connecting channel 13. On the one hand, it prevents the second connecting mechanism 3 from freely rotating in the second connecting channel 13, and on the other hand, it can also realize the positioning of the second connecting mechanism 3 in the second connecting channel 13.

[0060] In some embodiments, a plurality of fourth connecting channels 32 adapted to the electrode heads 221 are formed in the second connecting mechanism 3. A connecting ring 2211 is provided at one end of the electrode head 221 connected to the second connecting mechanism 3. An elastic contact piece 321 adapted to the electrode head 221 is provided in the fourth connecting channel 32. By providing the elastic contact piece 321 in the connecting channel 32, when the second connecting mechanism 3 is inserted into the electrode head 221, the connecting ring 2211 first enters the fourth connecting channel 32, and then contacts the elastic contact piece 321 to cause the elastic contact piece 321 to be compressed and deformed and then continue to move forward. Finally, after the connecting ring 2211 passes through the elastic contact piece 321, the elastic contact piece 321 will limit the connecting ring 2211 after restoring the deformation, so as to axially lock the second connecting mechanism 3 in the second connecting channel 13 by using the electrode head 221, thereby realizing the automatic and rapid locking function after the first connecting mechanism 2 and the second connecting mechanism 3 are connected.

[0061] Finally, it should be noted that: What is disclosed in the embodiments of the present utility model is only the preferred embodiments of the present utility model, which are only used to illustrate the technical solutions of the present utility model, rather than limiting it; Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A wellhead cable quick matching device, characterized in that, Comprising: A fixing mechanism, which is connected to the wellhead; A first connecting mechanism, which is connected to the downhole cable; A second connecting mechanism, which is connected to the surface cable; The first connecting mechanism and the second connecting mechanism are connected through the fixing mechanism; The fixing mechanism includes: a fixing member, and a first connecting channel and a second connecting channel provided in the fixing member; Wherein, the first connecting channel is connected to the first connecting mechanism, the second connecting channel is connected to the second connecting mechanism, and the first connecting mechanism and the second connecting mechanism are connected at the connection of the first connecting channel and the second connecting channel.

2. The quick cable matching device for wellhead according to claim 1, characterized in that, The first connecting mechanism includes: A first connecting head, a third connecting channel and a cable fixing member provided in the first connecting head; Wherein, the first connecting head is connected to the fixing member; A guiding slideway adapted to the fixing member is provided on the outer periphery of the first connecting head, and a guiding member is provided on the inner wall of the fixing member. The guiding member and the guiding slideway cooperate to turn the first connecting head to a preset orientation.

3. The quick-matching device for wellhead cables according to claim 2, characterized in that, The guiding slideway includes an inclined guiding section and a downward moving section connected to the guiding section and arranged vertically; wherein, after the guiding section abuts against the guiding member, it is used to guide the first connecting head to turn to a preset direction, and after the downward moving section abuts against the guiding member, it is used to guide the first connecting head to slide down to a preset position.

4. The wellhead cable quick matching device according to claim 3, characterized in that, The guiding slideway is a vertically arranged inverted Y-shaped structure.

5. The quick cable matching device for wellhead according to claim 3, characterized in that, The guiding section is spiral.

6. The quick cable matching device for wellhead according to claim 2, characterized in that, The third connecting channel is an L-shaped structure, and multiple groups of electrode heads are provided in the third connecting channel. The electrode heads are L-shaped structures adapted to the third connecting channel; A connecting ring is provided at one end of the electrode head connected to the second connecting mechanism.

7. The quick cable matching device for wellhead according to claim 6, characterized in that, A fan-shaped anti-twist groove is opened in the third connecting channel; The second connecting mechanism is a cylindrical structure, and an anti-twist key adapted to the anti-twist groove is opened on the outer periphery of the second connecting mechanism. The anti-twist key and the anti-twist groove cooperate with each other to radially lock the second connecting mechanism in the second connecting channel; Multiple fourth connecting channels adapted to the electrode heads are opened in the second connecting mechanism.

8. The quick cable matching device for wellhead according to claim 7, characterized in that, Elastic contact pieces adapted to the electrode heads are provided in the fourth connecting channels. The elastic contact pieces are used to axially lock the second connecting mechanism in the second connecting channel.

9. The quick cable matching device for wellhead according to claim 1, characterized in that, The first connecting mechanism further includes: a first telescopic cylinder and a second telescopic cylinder; wherein, both the first telescopic cylinder and the second telescopic cylinder are hollow structures; One end of the first telescopic cylinder is fixed in the fixing member; The ends of the first telescopic cylinder and the second telescopic cylinder connected to each other are in a buckling structure.

10. The wellhead cable quick-matching device according to claim 9, characterized in that, A connecting hole is opened on the first telescopic cylinder, and a fixing pin adapted to the connecting hole is opened on the second telescopic cylinder. The fixing pin is connected to the connecting hole to lock the first telescopic cylinder and the second telescopic cylinder to each other.

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