CN219101293U

CN219101293U - Temporary well sealing device with pressure during construction of cabled measure

Info

Publication number: CN219101293U
Application number: CN202223244239.2U
Authority: CN
Inventors: 王滇东; 徐亮; 王广辉; 刘佳庆; 袁敏; 胡军; 高小雅; 李雪梅; 张斌; 孙玉璋
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-05-30
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to a temporary well sealing device with pressure during cable measure construction, which comprises a traversing well sealing oil pipe nipple, wherein a transmission pipeline is axially formed inside the traversing well sealing oil pipe nipple, screw threads are arranged on the outer walls of two ends of the traversing well sealing oil pipe nipple, a concave U-shaped groove is axially formed on the outer wall of the traversing well sealing oil pipe nipple, and rubber paint with the thickness of 0.5mm is uniformly coated on the inner wall of the U-shaped groove; when the wellhead is temporarily closed, the wellhead is provided with a blowout preventer, the nipple of the traversing type well-sealing oil pipe is vertically arranged at the wellhead, one end of the nipple is connected with an oil pipe in the well through a screw thread, and the other end of the nipple is connected with an oil pipe plug valve through the blowout preventer; the device does not cut off the cable of the monitoring equipment any more, can collect the target stratum data at any time, is safe and environment-friendly, and can shorten the well occupation time.

Description

Temporary well sealing device with pressure during construction of cabled measure

Technical Field

The utility model belongs to the technical field of petroleum equipment, and particularly relates to a temporary well sealing device with pressure during cable measure construction.

Background

When the oil-water well overhauls, the detection equipment is required to be put into the well for testing, and underground stratum data is acquired. After the operation construction is completed every day, the well is required to be sealed, and the cable of the monitoring equipment is required to be cut off during well sealing, so that the wellhead can be completely sealed by the blowout preventer.

In the operation process, if the well is not closed after construction, a large amount of overflow is generated; the monitoring cable cut off during well sealing is connected again during the operation again. Therefore, data of the measure target stratum cannot be obtained in the well sealing period, so that continuity of stratum data acquisition is lacked, and a great deal of time is required for preparation before re-operation, so that the method is high in cost and unfavorable for safety and environmental protection.

Disclosure of Invention

The utility model solves the technical problems by adopting the following technical scheme:

the under-pressure temporary well sealing device comprises a traversing well sealing oil pipe nipple, wherein a transmission pipeline is axially formed inside the traversing well sealing oil pipe nipple, screw threads are arranged on the outer walls of two ends of the traversing well sealing oil pipe nipple, a sunken U-shaped groove is axially formed on the outer wall of the traversing well sealing oil pipe nipple, and rubber paint with the thickness of 0.5mm is uniformly coated on the inner wall of the U-shaped groove;

when the wellhead is temporarily closed, the wellhead is provided with a blowout preventer, the traversing type well-sealing oil pipe nipple is vertically arranged at the wellhead, one end of the traversing type well-sealing oil pipe nipple is connected with an oil pipe in the well through a screw thread, and the other end of the traversing type well-sealing oil pipe nipple penetrates through the blowout preventer to be connected with an oil pipe plug valve.

Further, the cable in the oil well is fixedly installed in the U-shaped groove when passing through the blowout preventer.

Further, the cable is wrapped by high-pressure self-adhesive glue and pressed into the U-shaped groove.

Furthermore, the connecting buckles at the two ends of the short section of the traversing well-sealing oil pipe are UPTBG, one end of the UPTBG is connected with the oil pipe in the well, and the other end of the UPTBG can be connected with

And the tubing coupling is thickened, so that the hanging lifting and releasing functions are realized.

Further, the cable is a high-voltage cable with the diameter of 8-10mm.

Further, the U-shaped groove is positioned at the middle part of the side surface of the short section of the traversing well sealing oil pipe, the width of the groove is 10-12mm, the depth is 11-13mm, and the length is 800-1000mm.

Further, when the wellhead is temporarily closed, the traversing well-sealing oil pipe nipple is blocked by the blowout preventer.

Furthermore, the short section length of the traversing well sealing oil pipe is 1-1.5m, and the traversing well sealing oil pipe can be matched with the oil pipe of the used model.

Further, when there are fewer than 100 tubing in the well and it is necessary to temporarily close the wellhead, it is necessary to install an anti-topper device.

The utility model has the advantages and positive effects that:

the temporary well sealing device can enable the blowout preventer to be used for sealing the well directly after daily operation, does not cut off a cable of monitoring equipment, can collect target stratum data at any time, is safe and environment-friendly, and can shorten the well occupation time.

Drawings

The technical solution of the present utility model will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for the purpose of illustration only and thus are not limiting the scope of the present utility model. Moreover, unless specifically indicated otherwise, the drawings are intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of a traversing well-sealing tubing nipple provided in an embodiment of the present utility model;

fig. 2 is a view from A-A of fig. 1.

Detailed Description

First, it should be noted that the following detailed description of the specific structure, characteristics, advantages, and the like of the present utility model will be given by way of example, however, all descriptions are merely illustrative, and should not be construed as limiting the present utility model in any way. Furthermore, any single feature described or implied in the embodiments mentioned herein, or any single feature shown or implied in the figures, may nevertheless be continued in any combination or pruning between these features (or equivalents thereof) to obtain still further embodiments of the utility model that may not be directly mentioned herein. In addition, for the sake of simplicity of the drawing, identical or similar features may be indicated at one point in the same drawing.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

As shown in fig. 1 to 2, the temporary well sealing device with pressure during construction of a cabled measure provided by the embodiment comprises a traversing well sealing oil pipe nipple, wherein a transmission pipeline 1 is axially formed inside the traversing well sealing oil pipe nipple, screw threads 2 are respectively arranged on the outer walls of two ends of the traversing well sealing oil pipe nipple, a concave U-shaped groove 3 is axially formed on the outer wall of the traversing well sealing oil pipe nipple, and rubber paint with the thickness of 0.5mm is uniformly coated on the inner wall of the U-shaped groove;

The cable in the oil well is fixedly installed in the U-shaped groove when passing through the blowout preventer.

The cable is wrapped by high-pressure self-adhesive glue and pressed into the U-shaped groove.

The connecting buckles at the two ends of the short section of the traversing well sealing oil pipe are UPTBG, one end of the UPTBG is connected with the oil pipe in the well, and the other end of the UPTBG can be connected with

The cable is a high-voltage cable with the diameter of 8-10mm.

The U-shaped groove is positioned at the middle part of the side surface of the short section of the traversing well sealing oil pipe, and has the width of 10-12mm, the depth of 11-13mm and the length of 800-1000mm.

When the wellhead is temporarily closed, the traversing well-sealing oil pipe nipple is blocked by the blowout preventer.

The short section length of the traversing well sealing oil pipe is 1-1.5m, and the traversing well sealing oil pipe can be matched with the oil pipe of the used model.

When the number of oil pipes in the well is less than 100 and the wellhead is required to be temporarily closed, an anti-jacking device is required to be installed; when the well is sealed, the blowout preventer can be used for directly clamping the short section of the oil pipe, and the cable is buried in the U-shaped blind groove, so that the cable is not affected, the underground condition can be observed even if the well is sealed, meanwhile, the repeated cable connection is not needed during the secondary construction, the operation time is saved, the number of times of cable joints is reduced, the integrity rate of the cable is improved, and the construction quality is improved.

When the oil-water well is in a well sealing state, acquiring target stratum data, and transmitting the target stratum data to a ground data acquisition device through a signal cable; when the signal cable passes through the blowout preventer, the signal cable is matched with the target oil pipe nipple, acts on the blowout preventer, continuously transmits target stratum data to the ground, and the target oil pipe nipple is used for connecting a downhole tubular column, protecting a data cable and sealing a wellhead.

The foregoing examples illustrate the utility model in detail, but are merely preferred embodiments of the utility model and are not to be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. The utility model provides a have cable measure to press interim well sealing device in area when construction which characterized in that: the device comprises a traversing well-sealing oil pipe nipple, wherein a transmission pipeline is axially formed inside the traversing well-sealing oil pipe nipple, screw threads are arranged on the outer walls of two ends of the transmission pipeline, a sunken U-shaped groove is axially formed on the outer wall of the traversing well-sealing oil pipe nipple, and rubber paint with the thickness of 0.5mm is uniformly coated on the inner wall of the U-shaped groove;

2. The temporary well closing device with pressure during cabled measure construction according to claim 1, characterized in that: the cable in the oil well is fixedly installed in the U-shaped groove when passing through the blowout preventer.

3. The temporary well closing device with pressure during cabled measure construction according to claim 2, characterized in that: the cable is wrapped by high-pressure self-adhesive glue and pressed into the U-shaped groove.

4. The temporary well closing device with pressure during cabled measure construction according to claim 1, characterized in that: the connecting buckles at the two ends of the nipple of the traversing well sealing oil pipe are UPTBG, one end of each UPTBG is connected with the oil pipe in the well, and the other end of each UPTBG can be connected with a thickened oil pipe coupling to realize the hanging lifting function.

5. The temporary well closing device with pressure during cabled measure construction according to claim 2, characterized in that: the cable is a high-voltage cable with the diameter of 8-10mm.

6. The temporary well closing device with pressure during cabled measure construction according to claim 1, characterized in that: the U-shaped groove is positioned at the middle part of the side surface of the short section of the traversing well sealing oil pipe, and has the width of 10-12mm, the depth of 11-13mm and the length of 800-1000mm.

7. The temporary well closing device with pressure during cabled measure construction according to claim 1, characterized in that: when the wellhead is temporarily closed, the traversing well-sealing oil pipe nipple is blocked by the blowout preventer.

8. The temporary well closing device with pressure during cabled measure construction according to claim 1, characterized in that: the short section length of the traversing well sealing oil pipe is 1-1.5m, and the traversing well sealing oil pipe can be matched with the oil pipe of the used model.

9. The temporary well closing device with pressure during cabled measure construction according to claim 1, characterized in that: when there are fewer than 100 tubing in a well and a temporary closure of the wellhead is required, an anti-top device is installed.