CN113097796A - Wet interfacing apparatus of cable in pit - Google Patents
Wet interfacing apparatus of cable in pit Download PDFInfo
- Publication number
- CN113097796A CN113097796A CN202110476364.7A CN202110476364A CN113097796A CN 113097796 A CN113097796 A CN 113097796A CN 202110476364 A CN202110476364 A CN 202110476364A CN 113097796 A CN113097796 A CN 113097796A
- Authority
- CN
- China
- Prior art keywords
- plug
- main body
- cable
- channel
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
Abstract
The invention relates to the technical field of oil extraction equipment, in particular to a downhole cable wet butt joint device, which comprises a first plug assembly and a second plug assembly, wherein the first plug assembly is connected with the first plug assembly; the first plug assembly includes: a first body; the first plug end seat is arranged on the first main body; the first main body is provided with an inserting column; the plug column is internally provided with a contact; the first guide member is disposed on the first body; the first centralizer is arranged on the first main body; the second plug assembly includes: a second body; the second body is internally provided with a butt joint channel; the docking channel is capable of receiving the first body therethrough; one end of the second main body is provided with a protective cover; the second guide member is arranged on the second main body and can be matched with the first guide member; the second centralizer is arranged on the second main body; the second plug end socket sets up in the second main part, is equipped with the contact pin on the second plug end socket: the contact pin can be plugged on the plugging column. The invention can facilitate the butt joint of underground cables and improve the operation efficiency.
Description
Technical Field
The invention relates to the technical field of oil extraction equipment, in particular to a wet butt joint device for underground cables.
Background
At present, in the processes of oil field logging operation at home and abroad, oil extraction operation using an electric submersible pump lifting technology and the like, most of electromechanical equipment and electrical instruments enter a well by clamping and binding a cable on the outer wall of an outer protective pipe through a cable clamp, and the cable and the electromechanical equipment enter the well along with the outer protective pipe. During construction, the cable is firstly connected with the electric submersible pump or a pilot production and well logging instrument, then the cable is straightened and tightly attached to the wall of the outer protective pipe, the cable and the outer protective pipe are tightly bound together by the cable clamp, the cable is bound into a well along with the outer protective pipe one by one, the operation process is quite complex, and the efficiency is low. In the process of lifting and lowering the outer protective pipe, the clamp needs to be broken and the clamp needs to be detached, so that time and labor are wasted, the well section with a large azimuth angle change is encountered, or the cable is not in tight contact with the outer wall of the outer protective pipe, the cable is easy to rub, extrude and collide between the outer wall of the outer protective pipe and the inner wall of the sleeve, the cable is damaged, the equipment and the cable are required to be lifted out after the cable is damaged, the brand new cable is replaced and enters the well again, the cost is increased, and the operation efficiency is influenced.
Disclosure of Invention
In view of this, the present invention provides a wet butt joint device for underground cables, which is mainly aimed at facilitating the butt joint of underground cables and improving the operation efficiency.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
an embodiment of the invention provides a downhole wireline wet-docking device, comprising a first plug assembly and a second plug assembly;
the first plug assembly is capable of mating with the second plug assembly;
the first plug assembly includes: the plug comprises a first main body, a first plug end seat, a first guide member and a first centralizer;
the first plug end seat is arranged on the first main body; the first main body is provided with an inserting column; a contact is arranged in the plug column; one end of the first main body is provided with an inserting channel; one end of the inserting channel is provided with a sealing plug; the sealing plug can be pierced; the inserting channel is filled with a first insulating liquid;
the first plug end seat can be connected with a first cable to be connected;
the first guide member is disposed on the first body;
the first centralizer is disposed on the first body;
the second plug assembly includes: a second body, a second guide member, a second centralizer, and a second plug end socket;
the second body has a docking channel therein; the docking channel is capable of receiving the first body therethrough;
one end of the second main body is provided with a protective cover; the protective cover can seal one end of the butt joint channel; the shield being pierceable; insulating liquid II is filled in the butt joint channel;
the second guide member is arranged on the second main body and can be matched with the first guide member to guide the first main body to move along a preset direction;
the second centralizer is disposed on the second body;
the second plug end socket is arranged on the second main body, and a contact pin is arranged on the second plug end socket: the contact pin can be inserted on the insertion column; and the second plug end seat can be connected with a second cable to be connected.
Furthermore, the plug-in column is arranged corresponding to the plug-in channel;
the inserting end of the inserting column extends to the inserting channel;
the first insulating liquid is insulating oil.
Further, the first guide member is a guide projection; the guide protrusion is disposed at an outer side of the first body.
Further, the second guide member includes: a guide channel; the guide channel is capable of receiving the first body therethrough; a guide groove is formed in the guide channel; the guide groove is matched with the guide protrusion and can guide the guide protrusion to move along a preset direction.
Further, the second plug end seat is arranged at one end of the second main body and is positioned at the outer side of the butt joint channel; the contact pins extend into the mating channels.
Furthermore, a support flange is arranged on the second plug end seat; the supporting flange is provided with an oil passage through hole.
Further, the first centralizer is an elastic centralizer.
Further, the first centralizer includes: the centering device comprises a centering body, a limiting component and an elastic component;
the righting body is fixedly disposed on the first body;
the limiting component is sleeved on the centering main body and can slide relative to the centering main body;
the resilient member is disposed between the stop member and the righting body; the stop member is capable of being blocked by the second plug assembly to prevent passage of the stop member through the mating channel.
Further, still include: a third body;
the third main body is of a straight pipe structure; the third body is coaxially arranged with the first body;
the first cable to be connected sequentially penetrates through the third main body and the first main body to be connected to the first plug end seat;
the third main body is provided with a cone clamp, and the cone clamp is arranged between the first cable to be connected and the third main body;
a cable packer is arranged on the third main body; the cable packer is arranged between the first cable to be connected and the third main body.
Further, the lower end of the second main body is provided with an equipment connecting member for hanging and receiving equipment to be butted;
and the inserting column is provided with a self-locking contact.
By the technical scheme, the underground cable wet butt joint device at least has the following advantages:
the underground cable butt joint is convenient, and the operation efficiency is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a first plug assembly and a second plug assembly of a downhole wireline wet-docking device according to an embodiment of the present disclosure;
fig. 2 is a schematic view of the first body and the first guide member of the first plug assembly.
Shown in the figure:
the connector comprises a first main body 1, a first plug end seat 2, a contact 2-1, an inserting channel 2-2, a sealing plug 2-3, a first guide member 3, a first centralizer 4, a centering main body 4-1, a limiting member 4-2, an elastic member 4-3, a second main body 5, a second centralizer 6, a support port 6-1, a second guide member 7, a second plug end seat 8, a pin 8-1, a support flange 8-2, a protective cover 9, an outer protective pipe 10, a cable II to be connected 11, an end seat sealing member 12, an equipment connecting member 13, a third main body 14, a cable packer 15, a cone clamp 16, a cable I to be connected 17 and an inner chamber 18.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined object, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As shown in fig. 1 and 2, one embodiment of the present invention provides a downhole wireline wet-docking device, comprising a first plug assembly and a second plug assembly; the first plug assembly can be butted with the second plug assembly, the first plug assembly and the second plug assembly are conducted, and power and signal transmission is carried out;
the first plug assembly includes: a first body 1, a first plug end socket 2, a first guide member 3 and a first centralizer 4; the first plug end seat 2 is arranged on the first main body 1; the first plug end seat 2 is fixedly arranged on the first main body 1 through a threaded connection in the preferred embodiment; of course, the first plug end socket 2 may also be fixed to the first body 1 by welding; of course, the first plug end socket 2 may be limited to a predetermined position in the first body 1 by a limiting structure. The first main body 1 is provided with an inserting column; the plug column is internally provided with a contact; the contacts communicate with the first plug end socket 2 and are further capable of communicating with a first cable to be connected. One end of the first main body 1 is provided with an inserting channel 2-2; one end of the splicing passage 2-2 is provided with a sealing plug 2-3; the sealing plug 2-3 can be pierced; the plug-in channel 2-2 is filled with insulation liquid I; preferably an insulating oil.
The plug column is arranged at one end of the first plug end seat 2 and is used for being matched with the contact pin 8-1 so as to conduct power and signals; the number of the inserting columns is 1 or more; when the number of the inserting columns is 1, the body of each inserting column is a first main body 1; the first body 1 is preferably of tubular construction to facilitate insertion into the second body 5; of course, the first body 1 may also be a cavity structure with a polygonal outer wall; the cavity structure is used as a plug-in channel. When the number of the inserting columns is multiple, the multiple inserting columns are distributed on the first main body 1 and are fixedly arranged with the first main body 1; the present embodiment is preferably integrally provided. The number of the 1, 2, 3, 4 and the like can be selected and set according to needs. The plug columns are preferably made of high-temperature-resistant, high-pressure-resistant and corrosion-resistant insulating materials so as to ensure the isolation and insulation among the contact pins 8-1. The first plug end seat 2 can fix the first main body 1, and plays a role in sealing and isolating when a cable passes through the first plug end seat 2 to be connected with the contact 2-1 of the plug post, and plays a role in sealing and isolating inside and outside when an external cable enters the plug, so that external liquid is prevented from entering the inside of the plug.
The first plug end seat 2 can be connected with a first cable 17 to be connected; the first cable to be connected 17 may be an external cable or a cable capable of being connected to an external cable.
The first guide member 3 is provided on the first body 1; the first guide member 3 is fixedly connected with the first body 1; so as to ensure the accurate and orderly splicing of each splicing column by matching the first main body 1 with the second guide member 7 in the process of entering the well. In the present embodiment, the first guide member 3 is preferably a guide projection; the guide projection is provided on the outside of the first body 1. The guide bulge is fixedly arranged on the first main body 1; in the embodiment, the guide protrusion is preferably a guide key, and the guide key is welded on the first main body 1; the guide key may also be provided integrally with the first body 1. The number of the guide keys is at least 1; the preferred number of guide keys in this embodiment is 1 to facilitate mating the guide key with the second guide member 7. The first guide member 3 ensures the centering and ordering of the plurality of posts and the plurality of pins 8-1 when the electrical connection is made.
The first centralizer 4 is arranged on the first body 1; preferably, the first centralizer 4 is a resilient centralizer to cushion the pin 8-1 when inserted into the plug post. Further preferably, the first centralizer 4 includes: a righting main body 4-1, a limiting component 4-2 and an elastic component 4-3; the righting body 4-1 is fixedly arranged on the first body 1; the limiting component 4-2 is sleeved on the righting main body 4-1 and can slide relative to the righting main body 4-1; the limiting component 4-2 is annular; the lower end of the stop member 4-2 can be attached to the upper end of the second plug assembly to close the end of the mating channel. The stop member 4-2 forms a seal against the upper end of the mating passage after the first plug assembly and the second plug assembly are mated together with the stop member 4-2.
The elastic component 4-3 is arranged between the limiting component 4-2 and the righting main body 4-1; the elastic member 4-3 is a spring. The stop member 4-2 can be blocked by the second plug assembly to prevent the stop member 4-2 from passing through the mating channel.
The second plug assembly includes: a second body 5, a second guide member 7, a second centralizer 6 and a second plug end socket 8; the second body 5 is internally provided with a butt joint channel; the docking channel is able to accommodate the passage of the first body 1; one end of the second body 5 is provided with a protective cover 9; the protective cover 9 can seal one end of the butt joint channel, and insulating liquid II is filled in the butt joint channel; the second insulating liquid is preferably insulating oil. The second insulating liquid may be the same as or different from the first insulating liquid. The shield 9 is pierceable to pierce the shield 9 therethrough when the first body 1 is squeezed. The protective cover may also be a rubber or latex material.
After the butt-joint channel is closed by the protective cover 9, a closed inner chamber 18 is formed between the second centralizer 6 and the second plug end seat 8; the inner chamber 18 is filled with insulating oil.
As the first body 1 enters the second body 5, the shield 9 is pierced, the first body 1 passing through the shield 9, entering the second body 5; before the first body 1 is not entered, the protection cover 9 is arranged on the butt joint channel in a sealing mode, and the butt joint channel is sealed. The inner chamber 18 is protected from debris during entry of the first plug assembly and the second plug assembly into the well. Of course, the protective cover 9 can also be replaced by a protective plug. The preferred embodiment is that the shield 9 is of a resilient construction. It is further preferred that the shield 9 is of an elastic membrane construction at a location corresponding to the docking passage to facilitate piercing and sealing.
The second guide member 7 is provided on the second body 5, and is capable of cooperating with the first guide member 3 to guide the first body 1 to move in a predetermined direction; in the present embodiment, the second guide member 7 preferably includes: a guide channel; the guide channel is able to accommodate the first body 1 to pass through; a guide groove is arranged on the guide channel; the guide groove is matched with the guide protrusion and can guide the guide protrusion to move along a preset direction, so that the plugging columns on the first plug end seat 2 on the first main body 1 can be kept in a preset direction and correspond to the contact pins 8-1 on the second plug end seat 8.
A second centralizer 6 is provided on the second body 5 to centralize the second plug end socket 8 with the second cable 11 to be connected, avoiding excessive deflection. The main body of the second centralizer 6 is of a cylindrical structure; the upper end of the cylinder structure is provided with a supporting port 6-1; the support port 6-1 is flared and is capable of guiding the first body 1 through the second centralizer 6.
The second plug end seat 8 is arranged on the second main body 5, and the second plug end seat 8 is provided with a contact pin 8-1: the second plug end seat 8 fixes the contact pin 8-1; the contact pin 8-1 can be inserted on the insertion column; the second plug end socket 8 can be connected with a second cable 11 to be connected. And a second to-be-connected cable 11 is connected to the second plug end seat 8, and an end seat sealing part 12 is connected between the second to-be-connected cable 11 and the second plug end seat 8 and used for sealing and isolating the inner chamber 18 from the outside and preventing external liquid from entering the inner chamber 18 so as to ensure the sealing property of the second to-be-connected cable 11 and the second plug end seat 8. The inner chamber 18 is a butt joint chamber of the plug column and the contact pin 8-1, insulating oil is filled in the chamber, and the chamber plays an electric insulation role after butt joint is completed.
The pin 8-1 is conducted with the second cable 11 to be connected. An inner chamber 18 is formed between the second plug end socket 8 and the second centralizer 6 to accommodate insertion of the first body 1.
When in use, the first plug assembly is generally selected to be connected with a first cable 17 to be connected on the well; the second plug assembly is connected with a second underground cable 11 to be connected; the cable II to be connected can be an independent cable and is connected with underground equipment through the independent cable; the second cable 11 to be connected is also a self-contained cable of the downhole equipment. In use, the first plug assembly is preferably inserted into the second plug assembly from the top down. Of course, the embodiment may also select the first plug assembly to be located downhole and the second plug assembly to be located uphole, and plug the second plug assembly to the first plug assembly.
The underground cable wet butt joint device provided by one embodiment of the invention is convenient for underground cable butt joint and improves the operation efficiency.
As a preference of the above embodiment, one end of the first body 1 has a plug-in channel 2-2; the plug channel 2-2 can guide the plug column to be in butt joint with the contact pin 8-1; the contact 2-1 is arranged corresponding to the inserting channel 2-2; when the number of the contacts 2-1 is multiple, the number of the inserting channels 2-2 is multiple; the plug-in channels 2-2 are arranged corresponding to the contacts 2-1 one by one. The plug end of the contact 2-1 extends to the plug channel 2-2; one end of the splicing passage 2-2 is provided with a sealing plug 2-3; the plugging channel 2-2 is filled with insulating oil, and the electric isolation and insulation are kept before and after plugging. The sealing plug 2-3 can be pierced. The sealing plug 2-3 is used for sealing the plugging channel 2-2 and preventing insulating oil in the plugging channel 2-2 from leaking out and external liquid from entering the plugging channel 2-2.
The sealing plug 2-3 can seal one end of the plugging channel 2-2; when the contact pin 8-1 enters the plug-in channel 2-2, the sealing plug 2-3 is pierced, and the contact pin 8-1 penetrates through the sealing plug 2-3, enters the plug-in channel 2-2 and is further plugged on the plug-in column; before the contact pin 8-1 does not enter the plug-in channel 2-2, the sealing plug 2-3 is arranged on the plug-in channel 2-2 in a sealing mode, and the plug-in channel 2-2 is sealed. Of course, the sealing plug 2-3 may also be replaced by a sealing cover. The preferred embodiment is where the sealing plug 2-3 is of a resilient construction. It is further preferable that the sealing plug 2-3 is of an elastic membrane structure at a position corresponding to the insertion passage 2-2 so as to facilitate piercing and sealing.
The present embodiment preferably has the first plug end socket 2 fixedly provided on the inner wall of the first body 1. The first plug end socket 2 can be locked on the first body 1 by a screw connection; of course, it may be fixed by welding.
As a preference of the above embodiment, the second plug end socket 8 is provided at one end of the second body 5, outside the docking channel; the pin 8-1 extends into the mating passage to effect a seal against the pin 8-1. The second plug end socket 8 is fixed to the second body 5 by screwing or welding, although other means, such as gluing, are not excluded.
As a preference of the above embodiment, the second plug end socket 8 is provided with a support flange 8-2; the support flange 8-2 can be supported on the inner wall of the outer protective tube 10 to secure the position of the second body 5 within the outer protective tube 10. The support flange 8-2 has oil passage through holes to maintain the fluidity of oil in the outer jacket 10. The abutment of the first body 1 with the second body 5 is facilitated by the support flange 8-2 confining the second body 5 to the centre of the outer shroud 10.
As a preferable aspect of the above embodiment, an embodiment of the present invention provides a downhole cable wet docking apparatus, further including: a third body 14; the third body 14 is a straight tube structure; the third body 14 is arranged coaxially with the first body 1; the third body 14 may be provided integrally with the first body 1; the third body 14 and the first body 1 are the same pipeline, which is beneficial to processing and has reliable structure. Of course, the third body 14 and the first body 1 may be provided independently. The third body 14 and the first body 1 are each connected to the first centralizer 4. The third body 14 is preferably fixed to the upper part of the first centralizer 4 in this embodiment; the first body 1 is fixed to the lower portion of the first centralizer 4.
A first cable 17 to be connected sequentially passes through the third main body 14 and the first main body 1 to be connected to the first plug end seat 2; the first cable to be connected 17 can be an external total cable or an independent cable and is fixedly arranged on the first main body 1. The first cable to be connected 17 is preferably an armored load-bearing cable which can bear large longitudinal tension besides transmitting power and signals, and the tension is transmitted to the first plug assembly through the taper clamp 16 in the well lifting process; the armored load-bearing cable passes through the cable packer 15 after being fastened by the taper clamp 16 and is electrically connected with the contact 2-1 on the plug column through the first plug end seat 2.
The third main body 14 is provided with a cone clamp 16, the cone clamp 16 is arranged between a first cable 17 to be connected and the third main body 14 and used for fastening a steel armor of the cable, bearing the weight of the first plug assembly in a wet butt joint process and transmitting ground tension to the first plug assembly in a well lifting process.
A cable packer 15 is arranged on the third main body 14; a cable packer 15 is provided between the first cable 17 to be connected and the third body 14 to pack the cable.
As a preference of the above embodiment, the lower end of the second body 5 is provided with an equipment connecting member 13 for hooking the equipment to be docked so as to maintain the distance between the second body 5 and the equipment to be docked and prevent the occurrence of pulling. The inserting column is provided with a self-locking contact to lock the inserting needle 8-1, so that the connection reliability is improved. The self-locking contact is preferably a U-shaped self-locking contact for electrical connection of cables and plugs. The device connecting member 13 is preferably a hook structure or a loop structure.
As a preference of the above embodiment, the second header assembly further includes: an outer protective tube 10; the second plug end socket 8 and/or the second body 5 are fixedly arranged on the inner wall of the outer protective tube 10. Can be fixed by welding or through a locking piece. Preferably, the upper end of the outer protecting pipe 10 is provided with a connector for the outer protecting pipe 10, so as to be conveniently butted with other outer protecting pipes 10.
The shield 9 can be arranged at the end part of the inner cavity 18, the second centralizer 6 is arranged in the inner cavity 18, when the first plug assembly passes through the shield 9 and the first centralizer 4 reaches the shield 9, the first body can be ensured to be coaxial in the inner cavity by cooperating with the second centralizer 6 while the shield 9 is sealed, and when the pin 8-1 of the second body 5 is contacted with the self-locking contact of the first body 1, the spring 4-3 of the first centralizer 4 plays a buffering role.
The invention provides a wet butt joint device for underground cables, which solves the problems that the cables are easy to damage when being lifted and lowered and the lifting and lowering operations of the cables are complicated in the oil extraction, oil testing and well logging processes. The electric energy, signals and the like are transmitted to the underground electromechanical equipment through the wet butt joint plug, so that the normal operation and signal transmission of the electromechanical equipment are realized.
One embodiment of the present invention provides a downhole cable wet docking apparatus that changes the way a cable is run into a well with previous equipment, by first running electromechanical equipment, running the cable with a plugging assembly into the well following the outer casing 10 after the electromechanical equipment reaches a predetermined position and is fixed, and using the wet docking apparatus to link the cable downhole. On one hand, the construction difficulty of entering the well is reduced, the construction amount of field personnel is reduced, and well entering auxiliary materials are saved. On the other hand, the electromechanical equipment enters the well without a cable, so that the well entering speed is greatly improved, the time cost is saved, the damage caused by the scraping and colliding of the cable does not exist, and the problems that the expensive cable is hung outside and is easy to damage, the whole cable is scrapped after being damaged and cannot be reused are solved. Because the cable is put in the pipe and the plugging mode is used, the cable can be reused.
One embodiment of the invention provides a downhole cable wet docking device, wherein in the process that a first plug assembly is on a well and a second plug assembly is docked underground: firstly, pre-entering well electromechanical equipment is connected with an equipment connecting component 13 at the lower end of the second plug component, and the cable is electrically connected; and injecting insulating oil into the inner cavity 18 of the second plug assembly, and covering the upper end of the inner cavity 18 with a protective cover 9 after the insulating oil is injected. Then, connecting the second plug assembly with the outer protective pipe 10; the second plug assembly, electromechanical device and outer jacket 10 are run into the well and the device is lowered to a predetermined location. The first plug assembly which is filled with insulating oil and sealed by the sealing plug 2-3 and a cable connected on the first plug assembly are slowly thrown into a well from an outer protective pipe 10 through ground equipment, when the first plug assembly reaches the position of the second plug assembly, the plugging column of the first plug assembly firstly enters an inner chamber 18 through a protective cover 9, the first plug assembly and the second plug assembly in the well are sequenced and centered under the mutual matching of a first guide member 3 and a second guide member 7, when the first plug assembly passes through a second centralizer 6 of the second plug assembly, the second centralizer 6 ensures that the plugging column of the first plug assembly is extruded with a pin 8-1 of the second plug assembly in the well, the pin 8-1 of the second plug assembly passes through a sealing plug 2-3 to be butted with a contact 2-1 of the plugging column, and the electrical connection is realized, finally, underground 'blind plugging' is realized, and in the process, the inner chamber 18 of the second plug assembly and the plugging channel 2-2 of the first plug assembly are filled with insulating oil, so that after the first plug assembly is butted with the second plug assembly, the inner chamber 18 of the second plug assembly is still filled with the insulating oil, and the inner chamber 18 is ensured to be isolated and insulated from the outside and the contact pins 8-1 and 8-1. The well head cable is connected with the above-ground matched electromechanical equipment.
According to the underground cable wet butt joint device provided by one embodiment of the invention, auxiliary materials entering a well are saved, manual operation is reduced, underground butt joint is facilitated, and the operation efficiency is improved.
Further still, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with such terms being used only to distinguish one element from another. Without departing from the scope of the exemplary embodiments. Similarly, the terms first, second, etc. do not denote any order or order, but rather the terms first, second, etc. are used to distinguish one element from another. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. A downhole wireline wet-mate apparatus comprising a first plug assembly and a second plug assembly;
the first plug assembly is capable of mating with the second plug assembly;
the first plug assembly includes: the plug comprises a first main body, a first plug end seat, a first guide member and a first centralizer;
the first plug end seat is arranged on the first main body; the first main body is provided with an inserting column; a contact is arranged in the plug column; one end of the first main body is provided with an inserting channel; one end of the inserting channel is provided with a sealing plug; the sealing plug can be pierced; the inserting channel is filled with a first insulating liquid;
the first plug end seat can be connected with a first cable to be connected;
the first guide member is disposed on the first body;
the first centralizer is disposed on the first body;
the second plug assembly includes: a second body, a second guide member, a second centralizer, and a second plug end socket;
the second body has a docking channel therein; the docking channel is capable of receiving the first body therethrough;
one end of the second main body is provided with a protective cover; the protective cover can seal one end of the butt joint channel; the shield being pierceable; insulating liquid II is filled in the butt joint channel;
the second guide member is arranged on the second main body and can be matched with the first guide member to guide the first main body to move along a preset direction;
the second centralizer is disposed on the second body;
the second plug end socket is arranged on the second main body, and a contact pin is arranged on the second plug end socket: the contact pin can be inserted on the insertion column; and the second plug end seat can be connected with a second cable to be connected.
2. A downhole wireline wet-docking device according to claim 1,
the contact is arranged corresponding to the inserting channel;
the plug end of the contact extends to the plug channel;
the first insulating liquid is insulating oil.
3. A downhole wireline wet-docking device according to claim 1,
the first guide member is a guide projection; the guide protrusion is disposed at an outer side of the first body.
4. A downhole wireline wet-docking device according to claim 3,
the second guide member includes: a guide channel; the guide channel is capable of receiving the first body therethrough; a guide groove is formed in the guide channel; the guide groove is matched with the guide protrusion and can guide the guide protrusion to move along a preset direction.
5. A downhole wireline wet-docking device according to claim 1,
the second plug end seat is arranged at one end of the second main body and is positioned at the outer side of the butt joint channel; the contact pins extend into the mating channels.
6. A downhole wireline wet-docking device according to claim 1,
a supporting flange is arranged on the second plug end seat; the supporting flange is provided with an oil passage through hole.
7. A downhole wireline wet-docking device according to claim 1,
the first centralizer is an elastic centralizer.
8. A downhole wireline wet-mate device according to claim 7,
the first centralizer includes: the centering device comprises a centering body, a limiting component and an elastic component;
the righting body is fixedly disposed on the first body;
the limiting component is sleeved on the centering main body and can slide relative to the centering main body;
the resilient member is disposed between the stop member and the righting body; the stop member is capable of being blocked by the second plug assembly to prevent passage of the stop member through the mating channel.
9. A downhole wireline wet-mate device according to claim 1, further comprising: a third body;
the third main body is of a straight pipe structure; the third body is coaxially arranged with the first body;
the first cable to be connected sequentially penetrates through the third main body and the first main body to be connected to the first plug end seat;
the third main body is provided with a cone clamp, and the cone clamp is arranged between the first cable to be connected and the third main body;
a cable packer is arranged on the third main body; the cable packer is arranged between the first cable to be connected and the third main body.
10. A downhole wireline wet-docking device according to claim 1,
the lower end of the second main body is provided with an equipment connecting component for hanging equipment to be butted;
and the inserting column is provided with a self-locking contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476364.7A CN113097796A (en) | 2021-04-29 | 2021-04-29 | Wet interfacing apparatus of cable in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476364.7A CN113097796A (en) | 2021-04-29 | 2021-04-29 | Wet interfacing apparatus of cable in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113097796A true CN113097796A (en) | 2021-07-09 |
Family
ID=76680747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110476364.7A Pending CN113097796A (en) | 2021-04-29 | 2021-04-29 | Wet interfacing apparatus of cable in pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113097796A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431533A (en) * | 2021-08-09 | 2021-09-24 | 克拉玛依市尚正石油科技有限公司 | Underground cable wet butt joint oil-submersible pump layered oil extraction device |
-
2021
- 2021-04-29 CN CN202110476364.7A patent/CN113097796A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431533A (en) * | 2021-08-09 | 2021-09-24 | 克拉玛依市尚正石油科技有限公司 | Underground cable wet butt joint oil-submersible pump layered oil extraction device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9322245B2 (en) | Metal encased cable power delivery system for downhole pumping or heating systems | |
| US5389003A (en) | Wireline wet connection | |
| EP1255022B1 (en) | Apparatus and method for installing a monitoring line in a well | |
| US9598951B2 (en) | Coupled electronic and power supply frames for use with borehole conduit connections | |
| JPS6160233B2 (en) | ||
| US20130312996A1 (en) | Pressure balanced coiled tubing cable and connection | |
| JPS6073996A (en) | Pit interior measuring and/or work conducting method and apparatus | |
| EA028999B1 (en) | Electrical wiring for drill pipe, casing, and tubing | |
| US9915103B2 (en) | Transmission line for wired pipe | |
| US11131149B2 (en) | Transmission line for wired pipe | |
| CN113097796A (en) | Wet interfacing apparatus of cable in pit | |
| US20160060967A1 (en) | Methods and Systems for Deploying Cable into a Well | |
| CN214478191U (en) | Wet interfacing apparatus of cable in pit | |
| US9644433B2 (en) | Electronic frame having conductive and bypass paths for electrical inputs for use with coupled conduit segments | |
| US11286725B2 (en) | Drill pipe segments for logging operations | |
| JPH01157077A (en) | Connector connected to sonde which makes multicore cable descend into boring hole mechanically and electrically | |
| CN114263454B (en) | Current linear injection device and injection method | |
| CN116241196A (en) | Cable throwing and fishing wet joint, cable intelligent separate injection system and construction method thereof | |
| CN212626291U (en) | Special piston cable butt joint ware of well | |
| CN105089622B (en) | Horizontal well bar conveying well measuring technique rod tube column | |
| CN201953370U (en) | Hand-held detector for upright column cable terminal | |
| CN111734337A (en) | High-temperature electric pump oil production testing wellhead device | |
| CN111720098A (en) | Novel oil of diving directly drives lifting device | |
| CN212508191U (en) | High-temperature electric pump oil production testing wellhead device | |
| CN205135597U (en) | Logging technology pole tubular column is carried to horizontal well pole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |