Fine pressure control well cementation dynamic decision control method and device

Abstract

The invention relates to the technical field of pressure control well cementation methods and devices, in particular to a fine pressure control well cementation dynamic decision control method and device, and the fine pressure control well cementation dynamic decision control device comprises a data acquisition module, a data sending module, a data transmission module, a data integration module, a decision analysis module, an automatic control module and an execution mechanism. The fine pressure control well cementation data real-time acquisition, monitoring and control method is formed, real-time acquisition, transmission and integration of flow, density, pressure and other data at the inlet and the outlet of a shaft are achieved, monitoring and control of the whole process of pressure control well cementation are achieved, and compared with an existing manual control pressure control well cementation mode, the method has the advantages that the cost is low; and the fine pressure control well cementation data acquisition, monitoring and control method is more accurate and more scientific.

Description

Technical Field

[0001] The invention relates to the technical field of controlled pressure cementing methods and devices, and is a fine controlled pressure cementing dynamic decision control method, and also comprises a fine controlled pressure cementing dynamic decision control device. Background Art

[0002] Controlled pressure cementing is an important process in the field of cementing in petroleum engineering. It effectively prevents adverse effects such as wellbore wall rupture and environmental pollution caused by wellbore overflow and leakage by controlling the pressure during cementing construction. In actual operation, controlled pressure cementing involves the adjustment and control of many parameters, among which the basis of dynamic control of wellbore pressure is real-time data collection. During the controlled pressure cementing construction process, through real-time data collection and transmission, integrated decision-making analysis and control can help engineers optimize construction parameters and prevent complex situations such as overflow and leakage during construction.

[0003] At present, controlled pressure cementing is mainly based on simulation analysis before construction, and the construction parameters of controlled pressure cementing are obtained through theoretical model calculation. However, the theoretical model itself has errors in considering influencing factors, boundary conditions and numerical calculation conversion, resulting in the lack of accuracy in the design of controlled pressure cementing schemes, field implementation plans and data. In addition, the current fine controlled pressure cementing system does not have the functions of dynamic data acquisition and integrated decision-making, and cannot accurately control the wellbore pressure in real time. The data collection of on-site personnel is relatively lagging, which in turn prolongs the response time of wellbore pressure control, resulting in poor cementing quality and other adverse consequences. Therefore, the traditional controlled pressure cementing system is not suitable for safe and stable wellbore cementing operations in extremely narrow pressure window formations. Summary of the invention

[0004] The present invention provides a dynamic decision-making control method and device for fine pressure controlled cementing, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem that the existing fine pressure controlled cementing system does not have dynamic data acquisition and integrated decision-making functions and cannot accurately control the wellbore pressure in real time.

[0005] One of the technical solutions of the present invention is achieved by the following measures: a fine pressure controlled cementing dynamic decision control device, including a data acquisition module, a data transmission module, a data transmission module, a data integration module, a decision analysis module, an automatic control module and an actuator; Acquisition module: used to collect the wellbore inlet flow rate, wellbore outlet flow rate, density, pump pressure and casing pressure parameter data collected at various acquisition points; Data transmission module: extracts the wellbore inlet flow rate, wellbore outlet flow rate, density, pump pressure and casing pressure parameter data to be sent from each collection point, then encrypts and compresses the data, and sends the data in real time; Data transmission module: using the data transmission module to transmit the parameter data to the database of the data acquisition system server, the database of the data acquisition system server provides data storage, management, query and synchronization functions; Data integration module: used to integrate the wellbore inlet flow, wellbore outlet flow, density, pump pressure, and casing pressure data stored in the database of the data acquisition system server; Decision analysis module: used to analyze and calculate the wellbore inlet flow, wellbore outlet flow, density, pump pressure, and casing pressure data integrated by the data integration module; Automatic control module: used to receive the parameter calculation results of the decision analysis module, and then send a control signal to the actuator according to the parameter calculation results. The actuator performs corresponding operations according to the control signal to automatically control the entire cementing process dynamically.

[0006] The following is a further optimization and / or improvement of one of the above-mentioned technical solutions: The acquisition module includes an inlet acoustic flowmeter for collecting wellbore inlet flow, a pump pressure sensor for collecting pump pressure, a density sensor for collecting density, an outlet mass flowmeter for collecting wellbore outlet flow, and a casing pressure sensor for collecting casing pressure.

[0007] The above-mentioned actuators include gate valve actuators, throttle valves and gate valves.

[0008] The above data integration module is also used for automatic storage and data playback.

[0009] The second technical solution of the present invention is achieved through the following measures: a fine pressure controlled cementing dynamic decision control method using the fine pressure controlled cementing dynamic decision control device described in one of the technical solutions, including a data acquisition module that collects the required important parameters at the pressure controlled cementing site through an inlet acoustic flowmeter, a pump pressure sensor, a density sensor, an outlet mass flowmeter, and a casing pressure sensor, and sends the collected data to a data integration module through a data sending module and a data transmission module, and then sends the integrated data packet to a decision analysis module. After decision, calculation and analysis, an instruction is sent to an automatic control module. The automatic control module controls the working state of the actuator according to the received real-time dynamic calculation parameters to achieve dynamic and efficient control of the wellbore pressure.

[0010] Compared with the prior art, the beneficial effects of the present invention are: forming a method for real-time collection, monitoring and control of fine pressure-controlled cementing data, realizing real-time collection, transmission and integration of data such as flow, density, pressure at the wellbore inlet and outlet, and realizing monitoring and control of the entire process of pressure-controlled cementing. Compared with the existing manually controlled pressure-controlled cementing method, the method for collecting, monitoring and controlling fine pressure-controlled cementing data is more accurate and more scientific.

[0011] The present invention realizes real-time data collection, real-time transmission and real-time decision-making control of the whole process of dynamic pressure-controlled cementing, improves the performance of the fine pressure-controlled cementing system, and provides technical support for improving the cementing quality in complex deep wells with narrow pressure window formations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 This is the dynamic decision-making control method for fine pressure controlled cementing of the present invention.

[0013] Attached Figure 2 It is a dynamic decision-making control device for fine pressure-controlled cementing of the present invention.

[0014] The codes in the attached drawings are: 1 is a data acquisition module, 2 is an inlet acoustic flowmeter, 3 is a pump pressure sensor, 4 is a density sensor, 5 is an outlet mass flowmeter, 6 is a casing pressure sensor, 7 is a data integration module, 8 is a decision analysis module, 9 is an electric control module, 10 is a gate valve actuator, 11 is a throttle valve, and 12 is a gate valve. DETAILED DESCRIPTION

[0015] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0016] The present invention will be further described below in conjunction with embodiments: Embodiment 1: As attached Figure 1 As shown, the fine pressure controlled cementing dynamic decision control device includes a data acquisition module 1, a data transmission module, a data transmission module, a data integration module 7, a decision analysis module 8, an automatic control module and an actuator; Acquisition module: used to collect the wellbore inlet flow rate, wellbore outlet flow rate, density, pump pressure and casing pressure parameter data collected at various acquisition points; Data transmission module: extracts the wellbore inlet flow rate, wellbore outlet flow rate, density, pump pressure and casing pressure parameter data to be sent from each collection point, then encrypts and compresses the data, and sends the data in real time; Data transmission module: using the data transmission module to transmit the parameter data to the database of the data acquisition system server, the database of the data acquisition system server provides data storage, management, query and synchronization functions; Data integration module 7: used to integrate the wellbore inlet flow rate, wellbore outlet flow rate, density, pump pressure, and casing pressure data stored in the database of the data acquisition system server; Decision analysis module 8: used to analyze and calculate the wellbore inlet flow rate, wellbore outlet flow rate, density, pump pressure, and casing pressure data integrated by the data integration module 7; Automatic control module: used to receive the parameter calculation results of the decision analysis module 8, and then send a control signal to the actuator according to the parameter calculation results. The actuator performs corresponding operations according to the control signal to automatically control the entire cementing process dynamically.

[0017] In the embodiment, the acquisition module includes an inlet acoustic flowmeter 2 for collecting wellbore inlet flow, a pump pressure sensor 3 for collecting pump pressure, a density sensor 4 for collecting density, an outlet mass flowmeter 5 for collecting wellbore outlet flow, and a casing pressure sensor 6 for collecting casing pressure.

[0018] In the embodiment, the actuator includes a gate valve actuator 10 , a throttle valve 11 and a gate valve 12 .

[0019] In the embodiment, the data integration module 7 is also used for automatic storage and data playback.

[0020] Embodiment 2: The dynamic decision-making control method for fine pressure-controlled cementing comprises a data acquisition module 1 which collects the required important parameters at the pressure-controlled cementing site through an inlet acoustic flowmeter 2, a pump pressure sensor 3, a density sensor 4, an outlet mass flowmeter 5, and a casing pressure sensor 6, and sends the collected data to a data integration module 7 through a data sending module and a data transmission module, and then sends the integrated data packet to a decision analysis module 8. After decision-making, calculation and analysis, an instruction is sent to an automatic control module. The automatic control module controls the working state of the actuator according to the received real-time dynamic calculation parameters to realize dynamic and efficient control of the wellbore pressure.

[0021] Embodiment 3: As attached Figure 2 As shown, the dynamic decision-making control method for fine pressure-controlled cementing includes a data acquisition module 1 that collects parameters collected by an inlet acoustic flowmeter 2, a pump pressure sensor 3, a density sensor 4, an outlet mass flowmeter 5, and a casing pressure sensor 6 at the pressure-controlled cementing site, and sends the parameters to a data integration module 7 through a data sending module and a data transmission module, and then sends the integrated data packet to a decision analysis module 8. After the decision analysis module 8 makes a decision and performs calculation and analysis after verification of the database big data, it sends a command to an electric control module 9. After receiving the command, the electric control module 9 responds quickly within 2 seconds to control the gate valve actuator 10, and realizes dynamic and efficient control of the wellbore pressure by real-time dynamic adjustment of the throttle valve 11, and can also realize rapid closure of the passage by controlling the gate valve 12.

[0022] In this embodiment, the automatic control module can adopt the electric control module 9. The electric control module 9 can adopt the electric valve control module PT-3D-J (provided by Shanghai Qianyi Automatic Valve Co., Ltd.); the decision analysis module 8 can be implemented by a conventional industrial PLC controller; the data transmission module can adopt a conventional signal transmission medium, such as optical fiber, network communication module (such as wireless communication, wired communication), etc.

[0023] In this embodiment, the gate valve actuator 10 may be an electric actuator (such as DKJ series electric actuator, Tianjin Benard Automatic Instrument Technology Development Co., Ltd.).

[0024] The present invention solves the problem of difficulty in smoothly controlling the wellbore pressure due to the inability to compare and check the inlet and outlet flow rates during fine pressure-controlled cementing. Through data integration, decision analysis and automatic control, the wellbore pressure can be smoothly connected when the pump is turned on and off, and the whole process of pressure-controlled cementing can be digitized, automated and intelligent. Efficient control of dynamic wellbore pressure can be achieved, which can maximize the cementing quality. It provides technical support for solving the problem of pressure stabilization and leakage prevention of dynamic pressure-controlled cementing in complex deep wells with narrow density window formations.

[0025] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A dynamic decision-making control device for fine pressure controlled cementing, characterized in that It includes data acquisition module, data transmission module, data integration module, decision analysis module, automatic control module and actuator; Acquisition module: used to collect the wellbore inlet flow rate, wellbore outlet flow rate, density, pump pressure and casing pressure parameter data collected at various acquisition points; Data transmission module: extracts the wellbore inlet flow rate, wellbore outlet flow rate, density, pump pressure and casing pressure parameter data to be sent from each collection point, then encrypts and compresses the data, and sends the data in real time; Data transmission module: using the data transmission module to transmit the parameter data to the database of the data acquisition system server, the database of the data acquisition system server provides data storage, management, query and synchronization functions; Data integration module: used to integrate the wellbore inlet flow, wellbore outlet flow, density, pump pressure, and casing pressure data stored in the database of the data acquisition system server; Decision analysis module: used to analyze and calculate the wellbore inlet flow, wellbore outlet flow, density, pump pressure, and casing pressure data integrated by the data integration module; Automatic control module: used to receive the parameter calculation results of the decision analysis module, and then send a control signal to the actuator according to the parameter calculation results. The actuator performs corresponding operations according to the control signal to automatically control the entire cementing process dynamically.

2. The precise pressure controlled cementing dynamic decision control device according to claim 1 is characterized in that The acquisition module includes an inlet acoustic flowmeter for collecting wellbore inlet flow, a pump pressure sensor for collecting pump pressure, a density sensor for collecting density, an outlet mass flowmeter for collecting wellbore outlet flow, and a casing pressure sensor for collecting casing pressure.

3. The precise pressure controlled cementing dynamic decision control device according to claim 1 or 2, characterized in that The actuators include gate valve actuators, throttle valves and gate valves.

4. The precise pressure controlled cementing dynamic decision control device according to claim 3 is characterized in that The gate valve actuator adopts an electric actuator.

5. The precise pressure controlled cementing dynamic decision control device according to claim 1, 2 or 4, characterized in that The data integration module is also used for automatic storage and data playback.

6. The precise pressure controlled cementing dynamic decision control device according to claim 3 is characterized in that The data integration module is also used for automatic storage and data playback.

7. The precise pressure controlled cementing dynamic decision control device according to claim 1, 2, 4 or 6, characterized in that The automatic control module adopts the electric control module.

8. The precise pressure controlled cementing dynamic decision control device according to claim 3 is characterized in that The automatic control module adopts the electric control module.

9. The precise pressure controlled cementing dynamic decision control device according to claim 5 is characterized in that The automatic control module adopts the electric control module.

10. A fine pressure controlled cementing dynamic decision control method using the fine pressure controlled cementing dynamic decision control device according to any one of claims 1 to 9, characterized in that It includes a data acquisition module that collects the required important parameters at the pressure-controlled cementing site through the inlet acoustic flowmeter, pump pressure sensor, density sensor, outlet mass flowmeter, and casing pressure sensor, and sends the collected parameters to the data integration module through the data sending module and the data transmission module, and then sends the integrated data packet to the decision analysis module. After decision-making, calculation and analysis, the instruction is sent to the automatic control module. The automatic control module controls the working state of the actuator according to the received real-time dynamic calculation parameters to achieve dynamic and efficient control of the wellbore pressure.

Images