CN214660057U - Connecting device for power cable and crossing device - Google Patents
Connecting device for power cable and crossing device Download PDFInfo
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- CN214660057U CN214660057U CN202121108227.XU CN202121108227U CN214660057U CN 214660057 U CN214660057 U CN 214660057U CN 202121108227 U CN202121108227 U CN 202121108227U CN 214660057 U CN214660057 U CN 214660057U
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Abstract
The utility model provides a connecting device of a power cable and a penetrator, which comprises a cable bridle and a supporting structure; the cable bridle is used for clamping a power cable, the upper end of the cable bridle is communicated with a wellhead crossing pipe, the outer side of the wellhead crossing pipe is hermetically sleeved with the supporting structure, the supporting structure is used for being hermetically connected with the top end of an oil production tree cap, and a core wire of the power cable can be connected with the crossing device through the wellhead crossing pipe. The electric power connection between a power cable in the well and a penetrator on the ground can be realized; the weight of the underground power cable and the electric submersible pump unit can be borne; the sealing of the pressure in the well can be realized, and the leakage caused by adopting the underground electric submersible pump unit during working is avoided; the electric submersible pump unit can be matched with a power cable to throw and drag the electric submersible pump unit, so that the operation of the electric submersible pump unit can be more convenient and quicker.
Description
Technical Field
The utility model relates to a power cable and the connection technical field who passes through the ware, especially a power cable and the connecting device who passes through the ware.
Background
In the use process of a conventional electric submersible pump system, an electric submersible pump unit is usually lowered to a target position in a well through an oil pipe, the oil pipe provides tension for the electric submersible pump unit after the electric submersible pump unit is lowered to the target position in the well, meanwhile, a cable is arranged along the outer side of the oil pipe through a cable clamp and connected with the electric submersible pump unit, the cable provides power for the electric submersible pump unit and does not provide tension, and the gravity of the cable is mainly supported by the oil pipe; when the electric submersible pump unit needs to be taken out, the oil pipe is taken out through the workover rig to take out the electric submersible pump unit. The conventional electric submersible pump system has the following defects in a mode of throwing and fishing the electric submersible pump unit through an oil pipe: high cost, long period, high operation risk and low efficiency.
In view of the above-mentioned disadvantages of the conventional electric submersible pump system, a cable-dropping and fishing electric submersible pump system has been proposed in the prior art, in which a cable winch is used to lower a cable from an oil pipe to a downhole suspension position for lowering an electric submersible pump unit; when the electric submersible pump unit is taken out, the cable winch is adopted to upwards withdraw the cable so as to pull out the electric submersible pump unit. The cable throwing and fishing electric submersible pump system can be used for lowering and taking out the electric submersible pump unit without depending on an oil pipe, and the operation is more convenient and quicker.
But above-mentioned cable is thrown and is dragged for electric submersible pump system and need the cable to carry out the atress when providing power to electric submersible pump unit, in order to satisfy the cable and provide power and atress to electric submersible pump unit, the cable needs to adopt the power cable that intensity is bigger, and this kind of power cable is compared in traditional cable weight bigger, like armoured cable etc.. The cable throwing and fishing electric submersible pump system is characterized in that a power cable is lowered through a cable winch to lower an electric submersible pump unit to a downhole suspension position, then the cable slips are used for temporarily suspending the weight of the power cable and the electric submersible pump unit under the well, then the power cable is cut off at the position between the cable winch and the well head according to the preset length above the well head, then the power cable of the well head is connected with the penetrator, however, the existing traversing device is only used for connecting a power cable in a well to realize electric power transmission, cannot bear the gravity of the power cable in the well and an electric submersible pump unit, the cable throwing and fishing electric submersible pump system needs a power cable to bear the weight of an electric submersible pump unit and throw and fish the electric submersible pump unit, so that a connecting device which can bear the weight of the underground power cable and the electric submersible pump unit, can transmit the power of the cable and can seal the pressure in a well is urgently needed to connect the penetrator on the ground and the underground power cable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the technical problems that the penetrator in the prior art is only used for connecting an underground power cable to realize electric power transmission and cannot bear the weight of the underground power cable and an electric submersible pump unit, the connection device of the power cable and the penetrator is provided, can bear the weight of the underground power cable and the electric submersible pump unit, can transmit the power of the cable, can seal the pressure in a well, and realizes the connection between the penetrator on the ground and the underground power cable.
In order to realize the purpose, the utility model discloses a technical scheme be:
a connecting device of a power cable and a penetrator comprises a cable bridle and a supporting structure;
the cable bridle is used for clamping a power cable, the upper end of the cable bridle is communicated with a wellhead crossing pipe, the outer side of the wellhead crossing pipe is hermetically sleeved with the supporting structure, the supporting structure is used for being hermetically connected with the top end of an oil production tree cap, and a core wire of the power cable can pass through the wellhead crossing pipe to be connected with the crossing device.
The cable bridle is provided with a channel, so that a core wire of a power cable can penetrate from the lower end of the cable bridle and is connected to the penetrator through a wellhead penetration pipe; the wellhead crossing pipe can be an independent tubular structure, a core wire of a power cable can be penetrated in the wellhead crossing pipe, and the lower connecting end of the crossing device can also be directly adopted. The cable bridle can adopt the conventional technology in the prior art, and can clamp the power cable passing through the internal channel of the cable bridle, so that the power cable is prevented from slipping downwards; the cable bridle is communicated with the lower end of the wellhead crossing pipe, and the wellhead crossing pipe can provide stress for the cable bridle; the wellhead crossing pipe provides upward supporting force through a supporting structure; the supporting structure is fixedly connected with the top end of the oil production tree cap, the oil production tree cap provides upward supporting force for the supporting structure, and the connecting device of the power cable and the penetrator can realize the function of bearing the weight of the underground power cable and the electric submersible pump unit connected with the power cable by means of the oil production tree cap through the stress structure. The supporting structure can be sealed with the top end of the oil production tree cap, the wellhead penetrating pipe and the supporting structure, so that the pressure in the well can be sealed through the power cable and the penetrating device, and leakage caused when an underground electric submersible pump unit is adopted to work is avoided. The sealing mode can adopt the existing sealing technology, such as sealing by adopting a sealing element, or sealing by adopting sealant and the like.
The utility model discloses a connecting device of power cable and penetrator, it can realize the connection of the penetrator of power cable and ground in the pit, realizes the electric power transmission; the function of bearing the weight of the underground power cable and the electric submersible pump unit connected with the power cable can be realized; the sealing of the pressure in the well can be realized, and the leakage caused by adopting the underground electric submersible pump unit during working is avoided; by adopting the connecting device of the power cable and the penetrator, the electric submersible pump unit can be thrown and fished by matching with the power cable, so that the operation of the electric submersible pump unit can be more convenient and quicker.
Preferably, the support structure comprises a wellhead suspension member and a wellhead pressing member, the wellhead suspension member is sleeved on the outer wall of the wellhead crossing pipe, and the wellhead suspension member is in sealing connection with the wellhead crossing pipe;
the wellhead suspension piece is used for being arranged on the inner side of the top of the oil production tree cap in an adaptive mode, the wellhead suspension piece can be sealed with the inner wall of the top of the oil production tree cap, the wellhead pressing piece can be fixedly connected with the oil production tree cap, and the wellhead pressing piece presses the wellhead suspension piece.
The wellhead suspension piece is used for being placed on the inner side of the top of the oil production tree cap and forming sealing with the inner wall of the top of the oil production tree cap, so that sealing is more convenient, and the sealing effect can be improved; and the wellhead suspension piece can better provide supporting force for the wellhead crossing pipe by virtue of the oil production tree cap. And when the underground electric submersible pump unit works, the pressure in the wellhead is increased, so that the wellhead suspension part is easily sprayed out of the wellhead, the condition is very dangerous, the connecting device of the power cable and the penetrator can be caused to temporarily lose the sealing on the pressure in the wellhead, the bearing function on the underground power cable and the electric submersible pump unit can be temporarily lost, the wellhead suspension part is pressed by the wellhead pressing part, the problem can be avoided, and further the construction danger is reduced. By adopting the supporting structure, the bearing capacity and the sealing effect can be improved; the well head flying piece realizes sealed function and bears the weight of the function, and the well head compresses tightly the fixed function that the piece realized and the production tree cap and to the well head flying piece spacing function downwards, separately sets up well head flying piece and well head through the function and compresses tightly the piece, be convenient for processing, installation and maintenance bearing structure.
Preferably, the wellhead compresses tightly the piece and contains the wellhead nut, the wellhead nut is the bottle lid form, the inside top surface of wellhead nut is the ring form, the inside top surface of wellhead nut compresses tightly the wellhead flying piece, the inboard threaded connection of wellhead nut in the outside of oil production tree cap.
The inner top surface of the wellhead nut is provided with a hole, so that a wellhead penetration pipe can penetrate through the hole, and if the inner top surface of the wellhead nut is annular. The wellhead pressing piece with the structure is convenient for pressing the wellhead suspension piece inside the oil production tree cap and is convenient for being stably connected with the oil production tree cap.
Preferably, at least one first sealing member is arranged at the side of the wellhead suspension member, and the first sealing member is used for sealing between the wellhead suspension member and the top inner wall of the oil production tree cap.
The number of the first sealing elements is determined according to actual conditions, and the first sealing elements can adopt structural members such as O-shaped sealing rings and the like.
Preferably, a bearing nut is connected to the outer side of the wellhead crossing pipe in a threaded manner and is fixed to the wellhead suspension piece.
The wellhead crossing pipe is hung on the wellhead hanging piece through the bearing nut, so that the mounting is convenient, and the bearing capacity can be improved.
Preferably, at least one second sealing element is arranged between the outer wall of the wellhead crossing pipe and the inner wall of the wellhead suspension member.
The second sealing elements can adopt structural components such as O-shaped sealing rings and the like, and the number of the second sealing elements is determined according to actual conditions. The sealing treatment is carried out between the outer wall of the wellhead traversing pipe and the inner wall of the wellhead suspension piece through at least one second sealing element, so that the sealing effect on the pressure in the well can be better ensured.
Preferably, the cable bridle is in threaded connection with the wellhead penetration pipe, so that the connection strength is guaranteed, and the installation is convenient.
Preferably, a sealing cylinder is connected between the wellhead traversing pipe and the traversing device, a core wire of the power cable can penetrate through the sealing cylinder, and at least one third sealing element is respectively arranged at the joint between the sealing cylinder and the wellhead traversing pipe and the joint between the sealing cylinder and the traversing device.
The wellhead crossing pipe is of a tubular structure, a core wire of a power cable can penetrate through the wellhead crossing pipe, the sealing cylinder is used for connecting the crossing device and the wellhead crossing pipe, so that the crossing device and the wellhead crossing pipe are more conveniently connected, meanwhile, the sealing is realized by arranging at least one third sealing element at the connecting part of the two ends of the sealing cylinder, and the pressure transmitted upwards from the wellhead crossing pipe can be better sealed. The third sealing element can adopt structural components such as an O-shaped sealing ring and the like, and the number of the third sealing elements is determined according to actual conditions.
Preferably, the wellhead traversing pipe is a lower connecting end of the traversing device.
The cable bridle is used for connecting the lower end of the lower connecting end, the supporting structure is used for being in sealing sleeve connection with the outer side of the lower connecting end, and the lower end of the lower connecting end can be connected with a core wire of the power cable.
The well head of this scheme passes through the lower link that the pipe directly adopted the ware for the lower link that passes through the ware directly passes the bearing structure and the cable bridle of well head and is connected. The core wire of the power cable passes through the cable bridle and is directly connected with the lower connecting end of the traversing device, and the core wire passes through the wellhead by means of the lower connecting end of the traversing device and is connected with the cable on the ground by the traversing device, so that electric power transmission is realized. The bearing structure of well head is used for the top of sealing connection oil production tree cap, and be used for sealed cup jointing the outside of lower link, by the bearing structure of oil production tree cap support well head department, bearing structure can support the lower link of penetrator, the lower link can support cable bridle, cable bridle suspends power cable in the pit, the realization bears the function of the weight of the electric submersible pump unit of power cable and power cable connection in the pit, and pass through bearing structure and oil production tree cap, seal between the lower link, make and to realize the sealing of pressure in the well, avoid causing when adopting the electric submersible pump unit in the pit to reveal.
By adopting the scheme, compared with a mode of independently additionally arranging the wellhead penetrating pipe, the height of the penetrating device above the wellhead can be reduced, and the device is convenient to install and use on the ground; the connecting position of the power cable and the penetrator is positioned below the wellhead, so that the connecting position of the power cable and the penetrator is not required to be sealed; it can reduce the structure, and the processing of being convenient for can practice thrift the cost.
Preferably, an adapter is sleeved between the lower end of the lower connecting end and the cable bridle, and a core wire of the power cable can penetrate through the adapter.
The inner part of the adapter can penetrate through a core wire of the power cable, so that the core wire of the power cable penetrating through the cable headstall can penetrate through the inner part of the adapter and then is connected to the lower connecting end of the penetrating device, and the adapter is used for connecting the lower connecting end with the cable headstall. When because of the length of lower link is not enough, be difficult to with under the condition of cable bridle lug connection, through crossover sub, be convenient for lower link and cable bridle's connection.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses a connecting device of power cable and penetrator, it can realize the connection of the penetrator of power cable and ground in the pit, realizes the electric power transmission; the function of bearing the weight of the underground power cable and the electric submersible pump unit connected with the power cable can be realized; the sealing of the pressure in the well can be realized, and the leakage caused by adopting the underground electric submersible pump unit during working is avoided; by adopting the connecting device of the power cable and the penetrator, the electric submersible pump unit can be thrown and fished by matching with the power cable, so that the operation of the electric submersible pump unit can be more convenient and quicker.
Drawings
FIG. 1 is a schematic view, partly in section, of a connection arrangement of a power cable and a penetrator as described in example 1;
figure 2 is a schematic view in partial section of the connection device of the power cable and the penetrator described in example 2.
Icon: 1-cable bridle; 2-a wellhead suspension part; 3-a wellhead crossing pipe; 4-a carrier nut; 5-a traversing device; 51-a lower connection end; 6-a third seal; 7-wellhead nut; 8-a first seal; 9-a second seal; 10-oil tree cap; 11-a power cable; 12-a crossover joint; 13-sealing the cartridge.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
The embodiment provides a connecting device of a power cable and a penetrator, and the connecting device is shown in figure 1 and comprises a cable horse head 1 and a supporting structure;
the cable bridle 1 is used for clamping a power cable 11, the upper end of the cable bridle 1 is communicated with a wellhead traversing pipe 3, the outer side of the wellhead traversing pipe 3 is hermetically sleeved with the supporting structure, the supporting structure is used for being hermetically connected with the top end of the oil production tree cap 10, and a core wire of the power cable 11 can be connected with a traversing device 5 through the wellhead traversing pipe 3.
In this embodiment, the wellhead traversing pipe 3 may be a single tubular structure, the upper end of the wellhead traversing pipe 3 is used for being hermetically connected with the traversing device 5, and the wellhead traversing pipe 3 is used for being penetrated by the core wire of the power cable 11.
The cable bridle 1 and the wellhead traversing pipe 3 are provided with channels and communicated, so that a core wire of the power cable 11 can penetrate into the lower end of the cable bridle 1 and penetrate out of the upper end of the wellhead traversing pipe 3, the core wire of the power cable 11 can be connected to the traversing device 5 by means of the upper end of the wellhead traversing pipe 3, the connection between the underground power cable 11 and the traversing device 5 on the ground is realized, the high-voltage electric power transmission is realized, and the traversing device 5 can be in the structure in the prior art. The power cable 11 can adopt an armored cable, has high strength and can bear the weight of the electric submersible pump unit during fishing.
The cable bridle 1 can adopt the conventional technology in the prior art, and can clamp the power cable 11 passing through the internal channel thereof to avoid the power cable 11 sliding downwards in the well; the upper end of the cable bridle 1 is connected with the lower end of a wellhead traversing pipe 3, and the wellhead traversing pipe 3 provides stress for the cable bridle 1 in a threaded connection or pin connection mode; the wellhead crossing pipe 3 provides upward supporting force through a supporting structure; in this embodiment, the cable bridle 1 is in threaded connection with the wellhead penetration pipe 3, so that the connection strength is ensured, and the installation is convenient. The supporting structure is fixedly connected with the top end of the oil production tree cap 10, the oil production tree cap 10 is the upward supporting force of the supporting structure, and the power cable and the penetrator connecting device can bear the weight of the underground power cable 11 and the electric submersible pump unit connected with the power cable 11 by means of the oil production tree cap 10 in the stress mode.
The supporting structure can be sealed with the top end of the oil production tree cap 10, the wellhead traversing pipe 3 and the supporting structure, and the wellhead traversing pipe 3 is sealed with the traversing device 5, so that the pressure in the well can be sealed through the connecting device of the power cable and the traversing device, and leakage caused by the adoption of an underground electric submersible pump unit during working is avoided. The sealing mode can adopt the existing sealing technology, such as sealing by adopting a sealing element, or sealing by adopting sealant and the like.
In the embodiment, the supporting structure comprises a wellhead suspension member 2 and a wellhead pressing member, the wellhead suspension member 2 is sleeved on the outer wall of the wellhead crossing pipe 3, and the wellhead suspension member 2 is connected with the wellhead crossing pipe 3 in a sealing manner; the wellhead suspension piece 2 is used for being fittingly arranged on the inner side of the top of the oil production tree cap 10, the wellhead suspension piece 2 can be sealed with the inner wall of the top of the oil production tree cap 10, the wellhead pressing piece can be fixedly connected with the oil production tree cap 10, and the wellhead pressing piece is used for pressing the wellhead suspension piece 2.
In the embodiment, the wellhead suspension member 2 is used for being placed on the inner side of the top of the production tree cap 10 and forming sealing with the inner wall of the top of the production tree cap 10, so that the sealing is more convenient, and the sealing effect can be improved; and the wellhead suspension member 2 can better provide supporting force for the wellhead crossing pipe 3 by means of the oil production tree cap 10. And when the underground electric submersible pump unit works, the pressure in the wellhead is increased, so that the wellhead suspension part 2 is easily sprayed out of the wellhead, the condition is very dangerous, the connecting device of the power cable and the penetrator can be caused to temporarily lose the sealing on the pressure in the wellhead, the bearing function on the underground power cable 11 and the electric submersible pump unit can be temporarily lost, the wellhead suspension part 2 is pressed by the wellhead pressing part, the problem can be avoided, and further the construction danger is reduced. By adopting the supporting structure, the bearing capacity and the sealing effect can be improved; well head flying piece 2 realizes sealed function and bears the weight of the function, and the well head compresses tightly the fixed function that the piece realized and the production tree cap 10 and to well head flying piece 2 spacing function down, compresses tightly the piece through separately setting up well head flying piece 2 and well head, is convenient for process, installation and maintenance bearing structure.
As shown in fig. 1, the wellhead pressing member includes a wellhead nut 7, the wellhead nut 7 is in a bottle cap shape, the internal top surface of the wellhead nut 7 is in a circular ring shape, the internal top surface of the wellhead nut 7 is used for pressing the wellhead suspension member 2, and the internal side surface of the wellhead nut 7 is in threaded connection with the outer side of the oil production tree cap 10.
The inner top surface of the wellhead nut 7 is circular, so that the wellhead penetration pipe 3 can penetrate through the wellhead penetration pipe. The wellhead pressing piece with the structure is convenient for pressing the wellhead suspension piece 2 inside the oil production tree cap 10 and is convenient for being stably connected with the oil production tree cap 10. Of course the inner top surface of the wellhead nut 7 may take other shapes, but it is necessary to leave a hole through which the wellhead straddle pipe 3 can pass.
In this embodiment, the cross section of well head flying piece 2 is the ring form, with the inner wall adaptation of oil production tree cap 10, the installation of being convenient for, is convenient for simultaneously set up first sealing member 8 in the side of well head flying piece 2, is favorable to improving sealed effect. At least one first sealing member 8 is arranged at the side of the wellhead suspension member 2, and the first sealing member 8 is used for sealing between the wellhead suspension member 2 and the top inner wall of the oil production tree cap 10. The number of the first sealing elements 8 is determined according to actual conditions, and the first sealing elements 8 can adopt structural members such as O-shaped sealing rings and the like. As shown in fig. 1, a total of two O-rings are provided between the wellhead suspension member 2 and the top inner wall of the production tree cap 10, so as to ensure that the position between the wellhead suspension member 2 and the top inner wall of the production tree cap 10 does not leak the pressure in the well.
As shown in fig. 1, a bearing nut 4 is fixedly connected above the wellhead suspension member 2, the bearing nut 4 is sleeved outside the wellhead penetration pipe 3, and an internal thread of the bearing nut 4 is connected with an external thread in the middle of the wellhead penetration pipe 3. Come the well head to pass through pipe 3 to articulate on well head flying piece 2 through bearing nut 4, the installation of being convenient for, and can improve bearing capacity, adopt threaded connection's mode, convenient operation, and can improve the joint strength who bears nut 4 and well head and pass through pipe 3.
In this embodiment, at least one second sealing element 9 is arranged between the outer wall of the wellhead traversing pipe 3 and the inner wall of the wellhead suspension member 2. The second sealing element 9 can adopt a structural member such as an O-shaped sealing ring, and the number of the second sealing elements 9 is determined according to actual conditions. The sealing treatment between the outer wall of the wellhead traversing pipe 3 and the inner wall of the wellhead suspension member 2 is carried out through at least one second sealing member 9, so that the sealing effect on the pressure in the well can be better ensured. As shown in fig. 1, two O-rings are arranged between the outer wall of the wellhead crossing pipe 3 and the inner wall of the wellhead suspension member 2.
In this embodiment, a sealing cylinder 13 is connected between the wellhead penetration pipe 3 and the penetration device 5, a core wire of the power cable 11 can be penetrated in the sealing cylinder 13, and at least one third sealing element 6 is respectively arranged at a joint between the sealing cylinder 13 and the wellhead penetration pipe 3 and a joint between the sealing cylinder 13 and the penetration device 5. As shown in fig. 1, the lower end of the sealing cylinder 13 is in threaded sleeve connection with the upper end of the wellhead penetrating pipe 3, and the sealing is enhanced through at least one third sealing element 6; the upper end of the sealing cylinder 13 is screwed on the lower connecting end 51 of the penetrator 5 and the sealing is enhanced by at least one third sealing element 6, and the joint between the upper end of the sealing cylinder 13 and the lower connecting end 51 of the penetrator 5 is not shown in fig. 1. The sealing cylinder 13 is used for connecting the penetrator 5 and the wellhead penetration pipe 3, so that the penetrator 5 and the wellhead penetration pipe 3 are more conveniently connected, meanwhile, the connection parts at the two ends of the sealing cylinder 13 are respectively provided with at least one third sealing element 6 to realize sealing, and the pressure transmitted upwards from the wellhead penetration pipe 3 can be better sealed. The third sealing element 6 can adopt structural members such as O-shaped sealing rings and the like, and the number of the third sealing elements 6 is determined according to actual conditions.
When in use, the steel wire sheath of the power cable 11 is pulled open, and the cable bridle 1 is used for clamping the sheath steel wire of the power cable 11; as shown in figure 1, the lower end of the cable bridle 1 clamps a power cable 11 with a stripping sheath steel wire, and a core wire without the sheath steel wire of the power cable 11 passes through the upper end of the cable bridle 1. The cable bridle 1 is sleeved at the lower end of the wellhead penetration pipe 3 and is connected through threads; after the wellhead crossing pipe 3 passes through the wellhead suspension part 2, the wellhead crossing pipe is fixed on the wellhead suspension part 2 by a bearing nut 4; the wellhead hanger 2 sits on the tree cap 10 and is compressed and fixed by the wellhead nut 7. Therefore, the weight of the underground power cable 11 and the underground electric submersible pump unit and the like are sequentially transmitted to the oil production tree cap 10 through the power cable 11, the cable bridle 1, the wellhead penetration pipe 3, the bearing nut 4 and the wellhead hanging piece 2, and the function of bearing the weight of the power cable 11 and the underground electric submersible pump unit and the like is achieved. After passing through a channel at the center of the cable bridle 1, a core wire of the power cable 11 passes through a channel at the center of the wellhead traversing pipe 3 and then is connected with an electric connector of the wellhead traversing device 5; the electrical connector at the other end of the penetrator 5 is connected with a ground cable. Thereby achieving the transmission of the electromotive force. The first seal 8, the second seal 9 at the wellhead, the third seal 6 at the junction of the wellhead penetrator 5 and the wellhead penetrator 3 can realize pressure sealing in the well. The penetrator 5 has a multilayer seal inside and can also seal the pressure in the well.
The utility model discloses a connecting device of power cable and penetrator, it can realize the connection of power cable 11 in the pit and penetrator 5 on ground, realizes the electric power transmission; the function of bearing the weight of the underground power cable 11 and the electric submersible pump unit connected with the power cable 11 can be realized; the sealing of the pressure in the well can be realized, and the leakage caused by adopting the underground electric submersible pump unit during working is avoided; by adopting the connecting device of the power cable 11 and the penetrator 5, the electric submersible pump unit can be thrown and fished by matching the power cable 11, so that the operation of the electric submersible pump unit can be more convenient and quicker.
Example 2
The present embodiment provides a connection arrangement of a power cable and a penetrator, see fig. 2, which differs from the connection arrangement of a power cable and a penetrator in the embodiments in that the wellhead traversing pipe 3 is a lower connection end 51 of the penetrator 5;
the cable bridle 1 is used for connecting the lower end of the lower connecting end 51, the supporting structure is used for being in sealing sleeve connection with the outer side of the lower connecting end 51, and the lower end of the lower connecting end 51 can be connected with a core wire of the power cable 11.
The wellhead traversing pipe 3 of the scheme directly adopts the lower connecting end 51 of the traversing device 5, and the lower connecting end 51 refers to one end of the traversing device 5 used for connecting a core wire of a downhole cable, so that the lower connecting end 51 of the traversing device 5 directly penetrates through a supporting structure of a wellhead to be connected with the cable headstall 1. The core wire of the power cable 11 passes through the cable bridle 1 to be directly connected with the lower connecting end 51 of the traversing device 5, passes through the wellhead by means of the lower connecting end 51 of the traversing device 5 and is connected with the cable on the ground by the traversing device 5, and then electric power transmission is realized. The supporting structure of well head is used for the top of sealing connection oil production tree cap 10, and be used for the sealed outside that cup joints lower connecting end 51, the bearing structure of well head is supported by oil production tree cap 10, bearing structure supports lower connecting end 51 of penetrator 5, lower connecting end 51 supports cable bridle 1, cable bridle 1 hangs power cable 11 in the pit, the function of the weight of the electric submersible pump unit that realizes bearing power cable 11 in the pit and power cable 11 and connect, and through bearing structure respectively with oil production tree cap 10, the lower connecting end 51 between sealed, make can realize the sealing of pressure in the well, avoid causing when adopting the electric submersible pump unit work in the pit to reveal.
Preferably, an adapter 12 is sleeved between the lower end of the lower connecting end 51 and the cable harness 1, and a core wire of the power cable 11 can be inserted into the adapter 12.
The inside of the adapter 12 can be penetrated by a core wire of the power cable 11, so that the core wire of the power cable 11 penetrating through the cable headstall 1 can penetrate through the inside and then be connected to the lower connecting end 51 of the penetrator 5, and the adapter is used for connecting the lower connecting end 51 with the cable headstall 1. When the lower connection end 51 is not long enough and is difficult to be directly connected with the cable headstall 1, the lower connection end 51 and the cable headstall 1 can be conveniently connected through the conversion joint 12.
Specifically, as shown in fig. 2, a wellhead suspension member 2 is seated inside the top end of the tree cap 10, and the wellhead suspension member 2 and the inner wall of the tree cap 10 are sealed by two first sealing members 8. The top of the top end of the oil production tree cap 10 is provided with a wellhead nut 7, the wellhead nut 7 is in threaded connection with the outer wall of the oil production tree cap 10, the top surface inside the wellhead nut 7 is in a circular ring shape, the top surface inside the wellhead nut 7 is used for compressing the wellhead suspension part 2, and the wellhead suspension part 2 is limited inside the top end of the oil production tree cap 10.
The lower end of the lower connecting end 51 of the traversing device 5 passes through the inside of the wellhead suspension member 2 and enters the oil production tree cap 10, and the outer wall of the lower connecting end 51 is sealed with the inner wall of the wellhead suspension member 2 through a second sealing member 9. The outer wall cover that is located well head flying piece 2 top, lower link 51 is equipped with bears nut 4, bears nut 4 and lower link 51 fixed connection, like threaded connection etc for link 51 can be fixed in the top of well head flying piece 2 with the help of bearing nut 4 down, and well head flying piece 2 supports link 51 down.
The lower end of the lower connecting end 51 is sleeved with the upper end of the adapter 12 in the production tree cap 10, the lower end of the adapter 12 is sleeved with the cable bridle 1, the cable bridle 1 clamps the power cable 11, and the mode that the cable bridle 1 clamps the power cable 11 can be the same as that described in embodiment 1.
By adopting the scheme, compared with a mode of independently adding the wellhead penetration pipe 3, the underground and overground electric power transmission can be realized, the weight of the underground power cable 11 and the electric submersible pump unit connected with the power cable 11 can be borne, and the pressure in the well can be sealed; the height of the penetrator 5 above the wellhead can be reduced, and the installation and the use on the ground are facilitated; and the connecting position of the power cable 11 and the penetrator 5 is positioned below the wellhead, so that sealing at the connecting position of the power cable 11 and the penetrator 5 is not needed; it can reduce the structure, and the processing of being convenient for can practice thrift the cost.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A connecting device of a power cable and a penetrator is characterized by comprising a cable bridle (1) and a supporting structure;
the cable bridle (1) is used for clamping a power cable (11), the upper end of the cable bridle (1) is communicated with a wellhead penetration pipe (3), the outer side of the wellhead penetration pipe (3) is hermetically sleeved with the supporting structure, the supporting structure is used for being hermetically connected with the top end of a production tree cap (10), and a core wire of the power cable (11) can be connected with a penetration device (5) through the wellhead penetration pipe (3).
2. The connection device of a power cable and a penetrator according to claim 1, wherein the support structure comprises a wellhead suspension member (2) and a wellhead pressing member, the wellhead suspension member (2) is sleeved on the outer wall of the wellhead crossing pipe (3), and the wellhead suspension member (2) is hermetically connected with the wellhead crossing pipe (3);
the wellhead suspension piece (2) is used for being fittingly arranged on the inner side of the top of the oil production tree cap (10), the wellhead suspension piece (2) can be sealed with the inner wall of the top of the oil production tree cap (10), the wellhead pressing piece can be fixedly connected with the oil production tree cap (10), and the wellhead pressing piece presses the wellhead suspension piece (2).
3. A connection arrangement of a power cable and a penetrator according to claim 2, characterized in that the wellhead pressing member comprises a wellhead nut (7), the wellhead nut (7) is in the form of a bottle cap, the wellhead hanger (2) is pressed by the inner top surface of the wellhead nut (7), and the inner side of the wellhead nut (7) is screwed to the outer side of the cap (10).
4. A power cable and penetrator connection according to claim 2, characterized in that at least one first seal (8) is arranged at a side of said wellhead suspension member (2), said first seal (8) being adapted to seal between said wellhead suspension member (2) and a top inner wall of said tree cap (10).
5. A connection arrangement of a power cable and a penetrator according to claim 2, characterized in that a bearing nut (4) is screwed on the outside of the wellhead traversing pipe (3), and the bearing nut (4) is fixed on the wellhead hanger (2).
6. A connection arrangement of a power cable and a penetrator according to claim 5, characterized in that at least one second seal (9) is arranged between an outer wall of the wellhead penetrator (3) and an inner wall of a wellhead hanger (2).
7. A connection arrangement of a power cable and a penetrator according to claim 1, characterized in that the cable bridle (1) is threadedly connected with the wellhead penetration pipe (3).
8. The connecting device of the power cable and the penetrator according to any one of claims 1 to 7, characterized in that a sealing cylinder (13) is connected between the wellhead penetrator (5) and the wellhead penetrator (3), a core wire of the power cable (11) can be arranged in the sealing cylinder (13), and at least one third sealing element (6) is respectively arranged at the joint between the sealing cylinder (13) and the wellhead penetrator (3) and the joint between the sealing cylinder (13) and the penetrator (5).
9. A connection arrangement of a power cable and a penetrator according to any one of claims 1-7, characterized in that the wellhead penetrator tubing (3) is a lower connection end (51) of the penetrator (5).
10. The connecting device of the power cable and the crossing device according to claim 9, wherein an adapter (12) is sleeved between the lower end of the lower connecting end (51) and the cable bridle (1), and a core wire of the power cable (11) can be arranged in the adapter (12) in a penetrating way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121108227.XU CN214660057U (en) | 2021-05-21 | 2021-05-21 | Connecting device for power cable and crossing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121108227.XU CN214660057U (en) | 2021-05-21 | 2021-05-21 | Connecting device for power cable and crossing device |
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|---|---|
| CN214660057U true CN214660057U (en) | 2021-11-09 |
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| CN202121108227.XU Active CN214660057U (en) | 2021-05-21 | 2021-05-21 | Connecting device for power cable and crossing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320860A (en) * | 2021-12-31 | 2022-04-12 | 百斯迈奇能源技术服务（深圳）有限公司 | Canning system and two electric submersible pump equipment |
| CN114837624A (en) * | 2022-05-12 | 2022-08-02 | 北京佰文恒新能源服务有限公司 | Electric submersible pump system without workover rig |
-
2021
- 2021-05-21 CN CN202121108227.XU patent/CN214660057U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320860A (en) * | 2021-12-31 | 2022-04-12 | 百斯迈奇能源技术服务（深圳）有限公司 | Canning system and two electric submersible pump equipment |
| CN114837624A (en) * | 2022-05-12 | 2022-08-02 | 北京佰文恒新能源服务有限公司 | Electric submersible pump system without workover rig |
| CN114837624B (en) * | 2022-05-12 | 2022-11-22 | 北京佰文恒新能源服务有限公司 | Electric submersible pump system without workover rig |
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