CN220504996U

CN220504996U - Monitoring device for a well bore

Info

Publication number: CN220504996U
Application number: CN202321996442.7U
Authority: CN
Inventors: 陈超; 董小虎; 韩军伟; 杨红满; 王逸; 杨伟彪
Original assignee: China Petroleum and Chemical Corp; Sinopec Northwest Oil Field Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Northwest Oil Field Co
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-02-20
Anticipated expiration: 2033-07-27

Abstract

The utility model provides a monitoring device for a well bore, which comprises a valve body with a three-way structure, a second channel, a third channel, a control valve and a measurer, wherein the valve body comprises a first channel, the second channel and the third channel are transversely arranged and connected with the well bore, liquid in the well bore flows from the second channel to the third channel of the valve body, the control valve is arranged at the first channel, and the measurer is arranged at one end of the control valve away from the valve body. The utility model can accurately measure the liquid level in the well bore on the basis of not affecting the normal installation of the well bore. In addition, the utility model can ensure that the signal sent by the signal transmitting part can be transmitted into the shaft at the fastest speed, and can accurately and real-timely acquire the liquid level data in the shaft.

Description

Monitoring device for a well bore

Technical Field

The utility model relates to the field of oil and gas field exploration, in particular to a monitoring device for a shaft.

Background

In the process of oil field exploration and development, if a formation pressure system has prediction deviation, well leakage and return can occur when the pressure of a shaft liquid column and the pressure of stratum leakage are greatly different in the drilling or completion stage of carbonate stratum. Currently, the real-time condition of the liquid level is obtained by installing a signal transmitting and receiving device at a choke manifold or a kill manifold. However, this approach requires that the well bore fluid level be calculated by signal transmission with the blowout preventer closed.

Because the oil field is more than 40 wells per year, the complex situation of well leakage and return exists in the well completion construction. Therefore, if the liquid level is monitored every 30 minutes after the occurrence of the lost circulation according to the well control management system, the blowout preventer needs to be frequently opened and closed, and thus the following problems occur. Firstly, the mode can seriously increase the operation time, thereby affecting the timeliness of construction. Secondly, because of frequent switching, the damage or failure of the internal parts of the blowout preventer is very easy to cause, and serious well control safety accidents are further caused.

It is therefore desirable in the art to provide a monitoring device for a wellbore that addresses the above-described technical problems.

Disclosure of Invention

The object of the utility model is to provide a monitoring device for a shaft which can accurately measure the liquid level in the shaft by means of a valve body constructed in the form of a three-way without affecting the normal installation of the shaft.

According to the present utility model there is provided a monitoring device for a well bore comprising a valve body configured to have a three-way construction comprising a first passage, and second and third passages arranged laterally and connected to the well bore, wherein liquid in the well bore flows from the second passage to the third passage of the valve body,

a control valve disposed at the first passage, and

and a measurer arranged at one end of the control valve away from the valve body.

In one embodiment, the second passage and the third passage of the valve body are on the same centerline.

In one embodiment, the first channel is disposed above the second channel, and a center line of the first channel forms an included angle of 30 ° to 45 ° with a center line of the second channel.

In one embodiment, the first channel has an inner diameter that is larger than the inner diameters of the second and third channels.

In one embodiment, the monitoring device further comprises a first flange disposed at the second passageway for fixed connection with the wellbore.

In one embodiment, the measurer includes a signal transmitting part configured in a tubular form, and a signal receiving part configured in a block form provided on a side wall of the signal transmitting part.

In one embodiment, a spill pipe extending radially outward is formed at the junction of the signal emitting portion and the control valve.

In one embodiment, the monitoring device further comprises a pressure sensor arranged on the signal transmitting part and a gas cylinder connected with one end of the signal transmitting part far away from the control valve.

In one embodiment, the control valve comprises a control body, a control joint arranged on the control body along the longitudinal direction, and second flanges arranged on two sides of the control body along the transverse direction, wherein the second flanges are respectively connected with the first channel and the signal transmitting part.

In one embodiment, the first flange and the second flange are both configured in a disc shape, and a plurality of through holes are provided along the circumferential directions of the first flange and the second flange.

Compared with the prior art, the utility model has the advantages that:

firstly, the utility model can accurately measure the liquid level in the shaft on the basis of not affecting the normal installation of the shaft by constructing the valve body in a three-way form. And moreover, the anti-overflow pipe is arranged at the joint of the signal transmitting part and the control valve, so that a sealed environment can be ensured between the signal transmitting part and the control valve, and the accuracy of liquid level data in the well bore measured by the monitoring device for the well bore is ensured.

The second, the first channel of the utility model has larger signal emission channel, thus has played the purpose of reducing the energy attenuation of the signal. Thus, the signal emitted by the signal emitting part can move into the valve body through the first channel more easily, and the liquid level in the shaft can be accurately monitored. In addition, the first channel has enough space, so that the signal sent by the signal transmitting part can be transmitted into the shaft at the fastest speed, and the liquid level data in the shaft can be accurately and real-timely acquired.

Thirdly, the utility model controls the communication relation between the measurer and the valve body through the control valve. When the measurement is needed, the control valve is opened, so that the measurer is communicated with the valve body to measure the liquid level in the shaft; when the measurement is not needed, the control valve is closed, so that the communication relation between the measurer and the valve body is interrupted, and the measurer is effectively protected.

Drawings

The utility model will be described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 schematically shows the construction of a monitoring device for a wellbore according to the present utility model;

FIG. 2 is a cross-sectional view of a valve body in a monitoring device for a wellbore according to the present disclosure;

fig. 3 schematically shows the structure of a control valve in a monitoring device for a wellbore according to the utility model.

In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Detailed Description

In order to make the technical solution and advantages of the present utility model more apparent, exemplary embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some of the embodiments of the present utility model and are not exhaustive of all embodiments. And embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

The utility model will be further described with reference to the accompanying drawings.

Fig. 1 schematically shows the structure of a monitoring device for a wellbore according to the utility model.

Fig. 2 is a cross-sectional view of a valve body 1 in a monitoring device for a wellbore according to the utility model.

As shown in fig. 1 and 2, a monitoring device for a wellbore according to the present utility model comprises a valve body 1. Preferably, the valve body 1 is constructed in a three-way structure and includes a first passage 11, a second passage 12, and a third passage 13.

In one embodiment, the second channel 12 and the third channel 13 are both arranged in a lateral direction on the valve body 1 and both are connected to a wellbore (not shown in the drawings). Preferably, liquid in the wellbore can flow from the second passage 12 to the third passage 13 of the valve body 1.

In a specific embodiment, as shown in fig. 2, the second channel 12 is on the same centerline as the third channel 13. In this way, the liquid in the well bore can pass through the second channel 12 and the third channel 13 of the valve body 1 quickly, so that the influence of the valve body 1 on the liquid flow in the well bore is effectively reduced, and the accuracy of measuring the liquid level in the well bore is ensured.

In one embodiment, as shown in fig. 2, the first passage 11 is disposed above the second passage 12, in other words, the first passage 11 is at the same side position as the second passage 12. By the arrangement mode, the success rate of signal transmission and signal receiving and the accuracy of measuring the liquid level in the shaft can be improved. Under the condition of the layout mode, the liquid level echo is obvious, the accuracy of measured data is high and the repeatability is good when the well bore is opened or closed to measure the liquid level through multiple field experiments.

In one particular embodiment, as shown in FIG. 2, the centerline of the first channel 11 forms an angle of 30-45 with the centerline of the second channel 12. Preferably, the measuring device 2 (described below) can have an optimal working condition when the center line of the first channel 11 forms an angle of 45 ° with the center line of the second channel 12, so as to improve the monitoring capability of the liquid level in the well bore, thereby facilitating the subsequent construction operation.

According to the utility model, as shown in fig. 3, the monitoring device for a wellbore further comprises a control valve 3. Preferably, the control valve 3 is arranged at the first passage 11 of the valve body 1, and the control valve 3 is between the valve body 1 and the measurer 2. By this means, it is ensured by the control valve 3 that the measuring device 2 can selectively perform a measuring operation, in order to increase the flexibility and reliability of the monitoring device for the well bore.

According to the utility model, as shown in fig. 1, the monitoring device for a wellbore further comprises a measurer 2. Preferably, the measurer 2 is arranged at the end of the control valve 3 remote from the valve body 1. The device is mainly used for detecting the liquid level in the shaft, thereby being beneficial to the work of oil field exploration and development.

In one embodiment, as shown in fig. 1, the measurer 2 includes a signal transmitting part 21. Preferably, the signal emitting portion 21 is configured in a tubular form and is capable of emitting a signal to the valve body 1. It will be readily appreciated that the signal can be directed via the control valve 3 to the fluid level in the well bore to detect the fluid level in the well bore in combination with a signal receiving portion 22 (described below).

In one embodiment, as shown in fig. 1, the measurer 2 further includes a signal receiving section 22. The signal receiving portion 22 is configured in a block-like form and is provided on a side wall of the signal transmitting portion 21 so as to be able to be used in cooperation with the signal transmitting portion 21.

It is readily understood that the monitoring process has two phases in the present utility model. One of them, the signal emitting portion 21 can emit a signal, and the signal can act with the liquid surface in the well bore to generate a reflected signal (acoustic wave). The second signal receiving unit 22 can receive the reflected signal and perform the recognition processing to obtain the liquid level value.

Compared with the prior art, the method and the device can accurately measure the liquid level in the well bore on the basis of not affecting the normal installation of the well bore. In addition, the blowout preventer does not need to be frequently opened and closed, so that the service life of the monitoring device for the shaft and the shaft is prolonged, and the safety in the pit is further improved. In addition, the utility model also effectively reduces the consumption of manpower and material resources, thereby ensuring that the underground construction has good timeliness.

In one embodiment, as shown in fig. 1, a spill pipe 201 extending radially outward is formed at the junction of the signal emitting portion 21 and the control valve 3. Preferably, the anti-overflow pipe 201 can ensure a sealed environment between the signal transmitting part 21 and the control valve 3, so that the signal sent by the signal transmitting part 21 can accurately reach the position to be measured, and the accuracy of data measured by the monitoring device for the well bore is further improved.

According to the utility model, as shown in fig. 1, the monitoring device for a wellbore further comprises a pressure sensor (not shown in the drawing). Preferably, a pressure sensor is provided on the signal emitting portion 21 so that the pressure inside the valve body 1 can be detected in real time to ensure that the measurer 2 can perform the liquid level monitoring operation smoothly.

In one embodiment, the monitoring device for a wellbore further comprises a gas cylinder (not shown in the drawings). The gas cylinder is connected to the end of the signal transmitting part 21 remote from the control valve 3.

In a preferred embodiment, the internal diameter of each of the first, second and third passages 11, 12 and 13 is not less than 2 inches.

In one embodiment, the inner diameter of the first channel 11 is larger than the inner diameters of the second channel 12 and the third channel 13. In this way, the channel for signal transmission is effectively increased, thereby achieving the purpose of reducing energy attenuation. Thus, the signal emitted from the signal emitting portion 21 can be moved into the valve body 1 through the first passage 11 more easily, and the liquid level in the well bore can be accurately monitored.

Further, since there is enough space in the first passage 11, it is ensured that the signal emitted from the signal emitting portion 21 can be transmitted into the well bore at the fastest speed, and that the liquid level data in the well bore can be accurately acquired in real time.

In one embodiment, as shown in fig. 3, the control valve 3 includes a control body 31 and a control joint 32. Preferably, the control body 31 is configured as a hollow sleeve. The control section 32 is provided on the control body 31 in the longitudinal direction, so that the communication between the measuring instrument 2 and the valve body 1 can be controlled.

In a preferred embodiment, as shown in fig. 1, a disk-shaped handle 321 is provided on the control section 32, so that the communication relationship between the measuring instrument 2 and the valve body 1 can be controlled more easily to ensure the safety of the use of the measuring instrument 2.

In one embodiment, as shown in fig. 2, the monitoring device further comprises a first flange 101. Preferably, the first flange 101 is provided at the second channel 12 and is capable of connecting the wellbore with the second channel 12, thereby improving the tightness between the wellbore and the valve body 1.

In a specific embodiment, the first flange 101 is configured in a disk shape, and a plurality of through holes 103 are provided along the circumferential direction of the first flange 101. Therefore, the shaft and the second channel 12 can be firmly connected together through the bolts and the through holes 103, so that stable connection relation between the second channel 12 and the shaft can be ensured all the time, and the accuracy of measuring the liquid level in the shaft is improved.

In one embodiment, as shown in fig. 3, the control valve 3 further comprises a second flange 102. The second flanges 102 are provided in two, and are provided on both sides of the control body 31 in the lateral direction, respectively. Preferably, the control valve 3 is able to form a firm connection with the first channel 11 of the valve body 1 and the signal transmitting portion 21 of the gauge 2, respectively, by means of the second flange 102, so as to ensure stability and tightness of the monitoring device for the well bore during the measurement of the fluid level in the well bore.

In a specific embodiment, the second flange 102 is configured in a disk shape, and a plurality of through holes 103 are provided along the circumferential direction of the second flange 102. Therefore, the control valve 3 can be firmly connected with the first channel 11 of the valve body 1 and the signal transmitting part 21 of the measurer 2 through the bolt and the through hole 103, so that stable connection relation between the control valve 3 and the first channel 11 and the signal transmitting part 21 can be ensured all the time, and the accuracy of measuring the liquid level in a shaft is improved.

Compared with the prior art, the utility model has the following advantages.

Firstly, the utility model can accurately measure the liquid level in the shaft on the basis of not affecting the normal installation of the shaft by constructing the valve body 1 in a three-way form. Further, by providing the overflow prevention pipe 201 at the joint between the signal transmitting portion 21 and the control valve 3, a sealed environment can be ensured between the signal transmitting portion 21 and the control valve 3, and accuracy of the in-well fluid level data measured by the monitoring device for the well bore can be ensured.

The second, the first channel 11 of the present utility model has a larger signal transmitting channel, thereby achieving the purpose of reducing the attenuation of signal energy. Thus, the signal emitted from the signal emitting portion 21 can be moved into the valve body 1 through the first passage 11 more easily, and the liquid level in the well bore can be accurately monitored. Further, since there is enough space in the first passage 11, it is ensured that the signal emitted from the signal emitting portion 21 can be transmitted into the well bore at the fastest speed, and that the liquid level data in the well bore can be accurately acquired in real time.

Thirdly, the utility model controls the communication relationship between the measurer 2 and the valve body 1 through the control valve 3. When the measurement is needed, the control valve 3 is opened, so that the measurer 2 is communicated with the valve body 1 to measure the liquid level in the shaft; when the measurement is not needed, the control valve 3 is closed, so that the communication relationship between the measuring instrument 2 and the valve body 1 is interrupted, and the measuring instrument 2 is effectively protected.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The above is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto. Modifications and variations may readily be made by those skilled in the art within the scope of the present disclosure, and such modifications and variations are intended to be included within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A monitoring device for a wellbore, comprising:

a valve body (1) configured to have a three-way structure, comprising a first passage (11), and a second passage (12) and a third passage (13) arranged in a lateral direction and connected to a well bore, wherein liquid in the well bore flows from the second passage (12) to the third passage (13) of the valve body (1),

a control valve (3) arranged at the first channel (11), and

and a measurer (2) arranged at one end of the control valve (3) far away from the valve body (1).

2. A monitoring device for a wellbore according to claim 1, characterized in that the second channel (12) and the third channel (13) of the valve body (1) are on the same centre line.

3. A monitoring device for a wellbore according to claim 2, characterized in that the first channel (11) is arranged above the second channel (12) and that the centre line of the first channel (11) forms an angle of 30-45 ° with the centre line of the second channel (12).

4. A monitoring device for a wellbore according to claim 3, characterized in that the internal diameter of the first channel (11) is larger than the internal diameters of the second channel (12) and the third channel (13).

5. The monitoring device for a wellbore according to claim 4, further comprising a first flange (101) arranged at the second channel (12) for fixed connection with the wellbore.

6. The monitoring device for a well bore according to claim 5, characterized in that the measurer (2) comprises a signal transmitting part (21) configured in a tubular form, and a signal receiving part (22) configured in a block form provided on a side wall of the signal transmitting part (21).

7. A monitoring device for a wellbore according to claim 6, characterized in that a radially outwardly extending anti-overflow pipe (201) is formed at the junction of the signal emitting part (21) and the control valve (3).

8. The monitoring device for a well bore according to claim 7, further comprising a pressure sensor arranged on the signal transmitting part (21), and a gas cylinder connected to an end of the signal transmitting part (21) remote from the control valve (3).

9. The monitoring device for a wellbore according to claim 8, characterized in that the control valve (3) comprises a control body (31), a control joint (32) arranged longitudinally on the control body (31), and second flanges (102) arranged laterally on both sides of the control body (31), wherein the second flanges (102) are connected with the first channel (11) and the signal transmitting portion (21), respectively.

10. The monitoring device for a wellbore according to claim 9, characterized in that the first flange (101) and the second flange (102) are each configured as a disk and that several through holes (103) are provided along the circumference of the first flange (101) and the second flange (102).