CN215804446U - Well head device convenient to oily cable of diving plays down - Google Patents
Well head device convenient to oily cable of diving plays down Download PDFInfo
- Publication number
- CN215804446U CN215804446U CN202121349787.4U CN202121349787U CN215804446U CN 215804446 U CN215804446 U CN 215804446U CN 202121349787 U CN202121349787 U CN 202121349787U CN 215804446 U CN215804446 U CN 215804446U
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- seat body
- submersible cable
- sealing
- conical
- vertical channel
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- 230000009189 diving Effects 0.000 title description 2
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 210000004907 gland Anatomy 0.000 claims abstract description 15
- 239000010779 crude oil Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a wellhead device convenient for an oil-submersible cable to be pulled out and pulled down, which relates to the technical field of oil extraction equipment and comprises the oil-submersible cable, a first seat body, a conical locking block, a second seat body, a sealing component and a gland, wherein a first vertical channel for the oil-submersible cable to pass through is arranged in the first seat body; the second seat body is detachably arranged at the upper end of the first seat body, and a second vertical channel is arranged in the second seat body; the second vertical channel and the first vertical channel are coaxially arranged, the upper part of the second vertical channel is a sealing cavity, the plurality of sealing parts are arranged in the sealing cavity side by side from top to bottom, and a cable through hole is formed in the center of each sealing part; the gland is detachably arranged at the upper end of the second seat body; the device is convenient and quick to mount and dismount, and the wellhead device is not required to be integrally dismounted in the process of pulling out the submersible cable, so that the workload is greatly reduced, and the operating efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of oil extraction equipment, in particular to a wellhead device convenient for pulling out and pulling down an oil-submersible cable.
Background
Along with the deep development of domestic oil fields, the proportions of horizontal wells, directional wells and the like are gradually increased so as to expand the development range and improve the recovery ratio. The technology that the traditional pumping unit drives the underground oil well pump through the sucker rod has hundred years of application history, the technology is mature and reliable, but in the development of horizontal wells and directional wells, the problems of eccentric wear of the sucker rod, wear-through of oil pipes and the like easily occur.
The drive motor of the submersible unit with the submersible screw pump, the submersible centrifugal pump and the submersible reciprocating pump is installed underground, the ground current is input into the drive motor through the submersible cable, and the ground does not have a mechanical transmission part to the submersible unit underground, so that the problems can not be caused, and the submersible unit can be put into a horizontal section, thereby being beneficial to exploitation of horizontal section stratum fluid and improving the recovery ratio.
The submersible cable penetrates through the oil pipe to be connected with the underground driving motor in a plugging manner, so that the submersible cable in the oil pipe can be directly lifted out from the ground during well repairing operation, the well repairing operation efficiency is improved, and the protection of the submersible cable is facilitated. However, the submersible cable is arranged in an oil pipe and cannot be fixed by a cable clamp, the suspended weight of the submersible cable is large and reaches 1-2 tons, the conventional common electric pump wellhead device adopts a 'claw head' structure, only plays a sealing role on the submersible cable and cannot bear such large load, and the conventional common electric pump wellhead device cannot play and put down the submersible cable under the condition of not integrally dismounting.
Therefore, it is urgently needed to develop a new electric pump wellhead device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a wellhead device convenient for pulling out an oil-submersible cable, aiming at the defects in the prior art.
The technical scheme of the utility model is as follows: a well head device convenient for the lifting of an oil-submersible cable comprises the oil-submersible cable, a first seat body, a conical locking block, a second seat body, a sealing component and a gland, wherein the lower end of the first seat body is provided with a connecting part for connecting well head equipment, and a first vertical channel for the oil-submersible cable to pass through is arranged in the first seat body; the upper end of the first vertical channel is provided with a conical cavity with a large upper part and a small lower part, the conical locking blocks are provided with a plurality of conical cavities which are uniformly distributed in the conical cavity in a circumferential manner, the outer wall of each conical locking block is matched with the conical cavity, and the inner wall of each conical locking block is matched with the submersible cable;
the second seat body is detachably arranged at the upper end of the first seat body, and a second vertical channel for the oil-submersible cable to pass through is arranged in the second seat body; the second vertical channel and the first vertical channel are coaxially arranged, the upper part of the second vertical channel is a sealing cavity, a plurality of sealing parts are arranged in the sealing cavity side by side up and down, and a cable through hole is formed in the center of each sealing part; the gland is detachably arranged at the upper end of the second seat body.
Preferably, the lower end of the second seat body is provided with a convex part extending into the conical cavity and used for applying downward pressure to the conical locking block.
Preferably, the tapered locking block is an elastic rubber piece, and a plurality of transverse arc grooves are formed in the inner wall of the tapered locking block.
Preferably, longitudinal guide rails are arranged on the inner wall of the conical cavity in a circumferential array manner, and a guide part in sliding fit with the guide rails is arranged on the outer wall of the conical locking block.
Preferably, a bypass pipe for conveying the produced crude oil is arranged on the first seat body, and a stop valve is arranged above the bypass pipe on the first seat body.
Preferably, the sealing component is a rubber sealing ring with a crack.
Compared with the prior art, the utility model has the following advantages:
the device is provided with a first seat body, a second seat body and a gland which are detachably connected, wherein the first seat body realizes axial locking on the submersible cable through a conical locking block in a conical cavity to play a role in bearing; the second seat body realizes annular sealing of the submersible cable through the sealing component in the sealing cavity, and isolates the contact between a wellhead and the external environment; the first pedestal, the second pedestal and the gland in the device are convenient and quick to mount and dismount, and the wellhead device is not required to be integrally dismounted in the process of pulling out the submersible cable, so that the workload is greatly reduced, and the operating efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded cross-sectional view of the components of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic structural diagram of a taper lock block according to an embodiment;
FIG. 5 is a schematic structural view of a taper lock block in the third embodiment;
fig. 6 is a schematic structural diagram of the present invention according to a second embodiment.
In the figure: 1. submersible cable, 2, first pedestal, 201, connecting portion, 202, first vertical passageway, 203, circular cone type chamber, 204, bypass pipe, 205, stop valve, 3, toper locking piece, 301, circular arc recess, 302, guide part, 4, second pedestal, 401, second vertical passageway, 402, sealed chamber, 403, bellying, 5, sealing member, 501, cable through-hole, 6, gland.
Detailed Description
The utility model is further illustrated below with reference to the figures and examples.
Example one
Referring to fig. 1-3, a wellhead device convenient for the lifting of an oil-submersible cable comprises an oil-submersible cable 1, a first seat body 2, a conical locking block 3, a second seat body 4, a sealing component 5 and a gland 6, wherein the lower end of the first seat body 2 is provided with a connecting part 201 for connecting wellhead equipment, and a first vertical channel 202 for the oil-submersible cable 1 to pass through is arranged in the first seat body 2; first vertical passageway 202 upper end is equipped with big-end-up's circular cone die cavity 203, and toper locking piece 3 is equipped with a plurality ofly and be the circumference equipartition in circular cone die cavity 203, the outer wall and the circular cone die cavity 203 adaptation of toper locking piece 3, inner wall and the adaptation of submersible cable 1.
In more detail, referring to fig. 4, in order to increase the friction between the inner wall of the tapered locking piece 3 and the surface of the submersible cable 1, the tapered locking piece 3 of the embodiment is an elastic rubber piece, and the inner wall is provided with a plurality of transverse arc grooves 301.
The second seat body 4 is installed at the upper end of the first seat body 2 through a bolt, and a second vertical channel 401 for the submersible cable 1 to pass through is arranged in the second seat body 4; the second vertical channel 401 and the first vertical channel 202 are coaxially arranged, the upper part of the second vertical channel 401 is a sealing cavity 402, four groups of sealing components 5 are arranged in the sealing cavity 402 in parallel up and down for sealing an annular space between the submersible cable 1 and the sealing cavity 402, and a cable through hole 501 is arranged in the center of each sealing component 5; the sealing member 5 of the present embodiment is a split rubber seal ring that can be inserted from one side of the submersible cable 1; the pressing cover 6 is mounted on the upper end of the second seat 4 by bolts for compacting the sealing member 5.
When in use, the first seat body 2 is fixedly arranged on an oil well mouth, and then the second seat body 4, the sealing component 5 and the gland 6 are assembled into a whole; the submersible cable 1 sequentially passes through the gland 6, the second seat body 4 and the first seat body 2, extends in the oil pipe and is connected with the submersible motor; after the submersible cable 1 is in place, fixing the second seat body 4 on the first seat body 2 to compact the conical locking block 3 by the second seat body 4; a plurality of conical locking blocks 3 are uniformly distributed in a ring shape and are arranged between the conical cavity 203 and the submersible cable 1, and the submersible cable 1 is axially locked and suspended; the sealing component 5 is pressed into the sealing cavity 402 of the second base 4 through the gland 6 to seal the outer annular surface of the submersible cable 1.
When the submersible cable 1 needs to be lowered, the hard connection between the second seat body 4 and the first seat body 2 is loosened, and at the moment, the locking force of the conical locking block 3 on the submersible cable 1 is weakened and the submersible cable can be slowly lowered; when the submersible cable 1 needs to be lifted, the submersible cable can be directly lifted without disassembling the device.
The device is provided with a first seat body 2, a second seat body 4 and a gland 6 which are detachably connected, wherein the first seat body 2 realizes axial locking on the submersible cable 1 through a conical locking block 3 in a conical cavity 203, and plays a role of bearing; the second seat body 4 realizes annular sealing of the submersible cable 1 through the sealing component 5 in the sealing cavity 402, and isolates the contact of a wellhead and the external environment; the first seat body 2, the second seat body 4 and the gland 6 in the device are convenient and quick to install and detach, and the wellhead device is not required to be integrally detached in the process of pulling up the submersible cable 1, so that the workload is greatly reduced, and the operation efficiency is improved.
Example two
As a preferred embodiment of the present invention, the present embodiment optimizes the structure of the first seat 2 on the basis of the first embodiment, specifically:
referring to fig. 6, a bypass pipe 204 for transporting produced crude oil is provided on the first seat 2 of the present embodiment, and a stop valve 205 is provided above the bypass pipe 204 on the first seat 2, and the submersible cable 1 is passed through by the stop valve 205; when the underground electric pump unit is used, the bypass pipe 204 serves as a crude oil output channel and conveys crude oil produced by the underground electric pump unit to a ground manifold; after the submersible cable 1 is pulled out, the stop valve 205 is closed to separate the outside from the shaft below the wellhead, and the arrangement can prevent oil and gas in the shaft from overflowing and prevent falling objects from entering the shaft.
EXAMPLE III
As a preferred embodiment of the present invention, in this embodiment, the structures of the second seat 4 and the taper lock block 3 are optimized on the basis of the second embodiment, specifically:
referring to fig. 3, the lower end of the second seat 4 of this embodiment is provided with a protrusion 403 extending into the conical cavity 203 for applying a downward force to the conical locking piece 3; due to the structure that the conical cavity 203 is large at the top and small at the bottom, the locking force of the conical locking block 3 on the submersible cable 1 is increased, and the submersible cable 1 is effectively prevented from sinking.
Referring to fig. 5, longitudinal guide rails are circumferentially arranged on the inner wall of the conical cavity 203 of the present embodiment, and a guide portion 302 slidably engaged with the guide rails is disposed on the outer wall of the conical locking block 3, so that the problem of uneven distribution caused by dislocation when the conical locking block 3 moves down can be effectively prevented.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention, and the contents of the changes still fall within the scope of the present invention.
Claims (6)
1. The utility model provides a well head device convenient to latent oily cable plays down which characterized in that: the oil-submersible cable sealing device comprises an oil-submersible cable, a first seat body, a conical locking block, a second seat body, a sealing component and a gland, wherein the lower end of the first seat body is provided with a connecting part for connecting wellhead equipment, and a first vertical channel for the oil-submersible cable to pass through is arranged in the first seat body; the upper end of the first vertical channel is provided with a conical cavity with a large upper part and a small lower part, the conical locking blocks are provided with a plurality of conical cavities which are uniformly distributed in the conical cavity in a circumferential manner, the outer wall of each conical locking block is matched with the conical cavity, and the inner wall of each conical locking block is matched with the submersible cable;
the second seat body is detachably arranged at the upper end of the first seat body, and a second vertical channel for the oil-submersible cable to pass through is arranged in the second seat body; the second vertical channel and the first vertical channel are coaxially arranged, the upper part of the second vertical channel is a sealing cavity, a plurality of sealing parts are arranged in the sealing cavity side by side up and down, and a cable through hole is formed in the center of each sealing part; the gland is detachably arranged at the upper end of the second seat body.
2. The wellhead device for facilitating the tripping of a submersible cable according to claim 1, wherein: and the lower end of the second seat body is provided with a convex part which extends into the conical cavity and is used for applying downward pressure to the conical locking block.
3. The wellhead device for facilitating the tripping of a submersible cable according to claim 1, wherein: the tapered locking block is an elastic rubber piece, and a plurality of transverse arc grooves are formed in the inner wall of the tapered locking block.
4. A wellhead device for facilitating the tripping of a submersible cable according to claim 1 or 3, characterized in that: the conical cavity inner wall is provided with longitudinal guide rails in a circumferential array mode, and the outer wall of the conical locking block is provided with a guide part in sliding fit with the guide rails.
5. The wellhead device for facilitating the tripping of a submersible cable according to claim 1, wherein: the first base body is provided with a bypass pipe used for conveying the produced crude oil, and a stop valve is arranged above the bypass pipe on the first base body.
6. The wellhead device for facilitating the tripping of a submersible cable according to claim 1, wherein: the sealing component is a rubber sealing ring with a crack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121349787.4U CN215804446U (en) | 2021-06-17 | 2021-06-17 | Well head device convenient to oily cable of diving plays down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121349787.4U CN215804446U (en) | 2021-06-17 | 2021-06-17 | Well head device convenient to oily cable of diving plays down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215804446U true CN215804446U (en) | 2022-02-11 |
Family
ID=80177021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121349787.4U Active CN215804446U (en) | 2021-06-17 | 2021-06-17 | Well head device convenient to oily cable of diving plays down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215804446U (en) |
-
2021
- 2021-06-17 CN CN202121349787.4U patent/CN215804446U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20231211 Granted publication date: 20220211 |
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| PP01 | Preservation of patent right |