Well shut-in module in emergency

Abstract

The invention discloses an emergency well shut-in module which comprises a host, a liquid level sensor, a drilling pump rotating speed sensor, a communication device and an alarm. The liquid level sensor, the drilling pump rotating speed sensor and the alarm are all in communication connection with the host through the communication device. The liquid level sensor is used for monitoring the liquid level in the circulating tank in real time; the drilling pump rotating speed sensor is used for monitoring the liquid level of drilling fluid in the drilling construction process in real time; the host is used for acquiring monitoring data of the liquid level sensor and the drilling pump rotating speed sensor, processing the monitoring data and sending alarm information to the alarm; and the alarm receives the alarm information sent by the host and sends an alarm signal. The liquid level in the tank is monitored in real time, overflow and well leakage are accurately judged, and precious time is gained for early treatment of abnormal conditions in the well, prevention of blowout accidents, protection of life and property safety in a working area and environment protection.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling construction monitoring, and more specifically relates to an emergency well shut-in module. Background Art

[0002] During the oil drilling process, the drilling fluid level needs to be monitored. Currently, most drilling fluid level monitoring alarms are used, which generally adopt pneumatic connection and sound alarm, and require manual operation at close range. The connection process of such instruments is complicated, and due to noise interference during the drilling process, the timeliness of alarm discovery is poor, the risk of overflow loss of control is high, and the cost of manual operation is high. Summary of the invention

[0003] In view of this, the present invention aims to solve at least one problem in the above-mentioned background technology and provides an emergency well shut-in module, which can realize accurate judgment of overflow and well leakage through real-time monitoring of the liquid level in the tank, so as to win precious time for early treatment of abnormalities in the well, prevent blowout accidents, protect life and property safety in the working area, protect the environment.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] An emergency well shut-in module comprises: a host, a liquid level sensor, a drilling pump speed sensor, a communication device and an alarm; the liquid level sensor, the drilling pump speed sensor and the alarm are all connected to the host through the communication device;

[0006] The liquid level sensor is used to monitor the liquid level in the circulation tank in real time;

[0007] The drilling pump speed sensor is used to monitor the drilling fluid level in real time during the drilling operation;

[0008] The host is used to obtain monitoring data from the liquid level sensor and the drilling pump speed sensor, process the data, and send alarm information to the alarm;

[0009] The alarm receives the alarm information sent by the host and sends out an alarm signal.

[0010] Furthermore, it also includes a display unit, which is electrically connected to the host and is used to display relevant information according to the command sent by the host.

[0011] Furthermore, it also includes a storage unit for storing data information sent by the host.

[0012] Furthermore, the host computer processes the monitoring data of the liquid level sensor and the drilling pump speed sensor including:

[0013] (1) The monitoring data of the liquid level sensor and the drilling pump speed sensor are processed using the relative calculation benchmark principle to improve the data measurement accuracy;

[0014] (2) The liquid level sensor is processed by using the translation mean difference calculation method to reduce the measurement error caused by the fluctuation of the drilling fluid level being measured, and a complete database of drilling fluid changes during the drilling process is formed;

[0015] (3) A numerical model for predicting the trend of drilling fluid changes is created to form a trend line of drilling fluid changes. Overflow or well leakage is predicted based on the shape of the trend line.

[0016] Furthermore, the communication device adopts a wired communication method or a wireless communication method.

[0017] The beneficial effects of the present invention are:

[0018] During drilling construction, the present invention can realize timely alarm by online monitoring of the change amount and change trend of drilling fluid in the circulation tank, and can also timely predict the change situation of the well according to the trend, and the use cost is low. The device can accurately and reliably judge the well overflow and leakage and automatically alarm, centrally and intuitively display the main data monitoring, realize the storage and printing of all data, and facilitate on-site analysis, so as to deal with the abnormality in the well at an early stage, prevent the occurrence of blowout accidents, protect the life and property safety in the working area, protect the environment, and win precious time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 The structural frame of the present invention Figure 1 ;

[0021] Figure 2 The structural frame of the present invention Figure 2 ;

[0022] Figure 3 A display diagram for parameter settings of the present invention;

[0023] Figure 4 A display diagram of real-time data of the present invention;

[0024] Figure 5 A display diagram of the history of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] refer to Figure 1-2 The present invention provides an emergency well shut-in module, comprising: a host, a liquid level sensor, a drilling pump speed sensor, a communication device and an alarm; the liquid level sensor, the drilling pump speed sensor and the alarm are all connected to the host through the communication device;

[0027] The liquid level sensor is used to monitor the liquid level in the circulation tank in real time;

[0028] The drilling pump speed sensor is used to monitor the drilling fluid level in real time during the drilling operation;

[0029] The host is used to obtain monitoring data from the liquid level sensor and the drilling pump speed sensor, process the data, and send alarm information to the alarm;

[0030] The alarm receives the alarm information sent by the host and sends out an alarm signal.

[0031] The present invention also includes a display unit, which is electrically connected to the host and is used to display relevant information according to the command sent by the host.

[0032] The present invention also includes a storage unit for storing data information sent by the host.

[0033] The invention has the functions of setting various parameters, collecting and displaying the volume of drilling fluid in the circulation tank, collecting and displaying the liquid level of the drilling fluid processor, collecting the rotation speed of the drilling pump, historical data and historical alarm record display, etc.

[0034] To further optimize the technical solution, the host computer processes the monitoring data of the liquid level sensor and the drilling pump speed sensor including:

[0035] (1) The monitoring data of the liquid level sensor and the drilling pump speed sensor are processed using the relative calculation benchmark principle to improve the data measurement accuracy, thereby greatly improving the reliability of the alarm and filling the gap in the relative change benchmark calculation method at home and abroad.

[0036] (2) The liquid level sensor is processed by calculating the translation mean difference, which reduces the measurement error caused by the fluctuation of the drilling fluid level, greatly improves the accuracy of data processing, and forms a complete database of drilling fluid changes during the drilling process.

[0037] (3) A numerical model for predicting the change trend of drilling fluid was created, forming a trend line of drilling fluid change. Overflow or well leakage was predicted based on the shape of the trend line to prevent it before it happens. This fills the gap in predicting overflow and well leakage through the relative change trend of drilling fluid at home and abroad.

[0038] To further optimize the technical solution, the communication device adopts a wired communication method or a wireless communication method.

[0039] Each drilling pump in the present invention is equipped with a pump stroke sensor, which effectively solves the false alarm caused by starting and stopping the pump on site. Each tank (or bin) in the drilling fluid circulation system can be independently set to "activate or deactivate", and can be automatically included in the total circulating liquid volume after activation; the entire set of devices is integrated with modular design, can be displayed on multiple screens (optional), has a small size, and is easy to load, unload, and maintain. The monitoring results are automatically stored, can be exported, printed, and adjusted at any time, which is convenient for analysis and judgment. The liquid level in the drilling fluid processor (liquid-gas separator) and the abnormal liquid level warning can be displayed in real time.

[0040] Parameters are set through the host. The display of parameter settings is as follows Figure 3 As shown, the parameter setting operation includes: ① Select the level sensor number. ② Set the tank name according to the number of the tank (warehouse) on site. ③ Enter the A, B and F values ​​of the tank (warehouse) corresponding to the selected level sensor number. ④ Turn on the "Enable" switch.

[0041] ⑤Click the [OK] button to save the information.

[0042] The real-time data display is as follows: Figure 4 As shown:

[0043] ① On the upper right side of the display unit page is the "Animation Alarm" area

[0044] When the alarm condition is reached, the host and the external sound and light alarm will sound at the same time; the alarm sound will automatically become silent after 30 seconds.

[0045] ②The middle of the display unit page is the "monitoring results display" area

[0046] The current liquid volume Vt and liquid volume change △Vt in the tested single tank (warehouse) are displayed in real time.

[0047] The current total liquid volume and total liquid volume change in each tested tank (silo) are displayed in real time.

[0048] When the volume change of the liquid in a tank (warehouse) is abnormal, the tank number button turns red to indicate the abnormality.

[0049] ③ The lower part of the display unit page is the "trend graph display" area

[0050] It is mainly used to display and view the change of the amount of liquid in the tank (silo) over time, also known as the "△Vt-t or ∑△Vt-t" trend chart.

[0051] When the mouse is placed on the trend line or any position of the touch-click curve is displayed, the "time corresponding to the click position and the value of △Vt (or Σ△Vt)" can be displayed.

[0052] The "∑△Vt-t" trend line is displayed by default. When you click the tank name button, the trend line of the corresponding tank (silo) will be displayed.

[0053] The area between the two red lines is the safety zone, and the area outside the safety zone is the warning zone.

[0054] The trend line is green when it is within the safe zone and red when it is outside the safe zone.

[0055] ④At the bottom of the display unit page is the “icon” area.

[0056] The display of historical records is as follows: Figure 5 As shown: Click the [History] button on the "Main Menu" page to enter the "History" page. You can query the "Liquid Volume Record", "Alarm Record" and "Trend Chart" of the selected well number.

[0057] During drilling construction, the present invention can realize timely alarm by online monitoring of the change amount and change trend of the drilling fluid in the circulation tank, and can also timely predict the change situation downhole according to the trend, and the use cost is low. The device can accurately and reliably judge the downhole overflow and leakage and automatically alarm, centrally and intuitively display the main data monitoring, realize the storage and printing of all data, and facilitate on-site analysis, so as to save precious time for early processing of abnormalities in the well, prevent blowout accidents, protect the safety of life and property in the working area, protect the environment. The present invention is not only suitable for drilling fluid level (amount) monitoring and abnormal situation pre-alarm in various oil and gas fields during drilling construction, but also suitable for various liquid level (amount) monitoring and abnormal situation pre-alarm in other industries.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An emergency shut-in module, characterized in that: include: A host, a liquid level sensor, a drilling pump speed sensor, a communication device and an alarm; the liquid level sensor, the drilling pump speed sensor and the alarm are all connected to the host through the communication device; The liquid level sensor is used to monitor the liquid level in the circulation tank in real time; The drilling pump speed sensor is used to monitor the drilling fluid level in real time during the drilling operation; The host is used to obtain monitoring data from the liquid level sensor and the drilling pump speed sensor, process the data, and send alarm information to the alarm; The alarm receives the alarm information sent by the host and sends out an alarm signal.

2. An emergency shut-in module according to claim 1, characterized in that: It also includes a display unit, which is electrically connected to the host and is used to display relevant information according to the command sent by the host.

3. An emergency shut-in module according to claim 2, characterized in that: It also includes a storage unit for storing data information sent by the host.

4. An emergency shut-in module according to claim 1, 2 or 3, characterized in that: The host computer processes the monitoring data of the liquid level sensor and the drilling pump speed sensor including: (1) The monitoring data of the liquid level sensor and the drilling pump speed sensor are processed using the relative calculation benchmark principle, and the data measurement accuracy is improved based on the relative change amount; (2) The liquid level sensor is processed by using the translation mean difference calculation method to reduce the measurement error caused by the fluctuation of the drilling fluid level being measured, and a complete database of drilling fluid changes during the drilling process is formed; (3) A numerical model for predicting the trend of drilling fluid changes is created to form a trend line of drilling fluid changes. Overflow or well leakage is predicted based on the shape of the trend line.

5. The emergency shut-in module according to claim 1, characterized in that: The communication device adopts a wired communication method or a wireless communication method.

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