CN-121995784-A - Simulation testing device and method for gas production single well hydraulic control system

CN121995784ACN 121995784 ACN121995784 ACN 121995784ACN-121995784-A

Abstract

The invention discloses a simulation test device and a simulation test method for a gas production single well hydraulic control system, which are characterized in that a first controller receives a field simulation signal given by a second controller, and sending an interlocking action instruction to the field valve according to the configuration logic of the first controller, and receiving the interlocking action instruction sent by the first controller by the second controller. The data processing module is interacted with the first controller and the second controller, acquires all instrument signals, control instructions and on-site valve state changes, records and archives the instrument signals, the control instructions and the on-site valve state changes, and automatically generates a test report. The output port of the first controller is connected with the energy storage structure, and the output end of the energy storage structure and the second controller are interacted to realize energy storage control. The simulated gas production single well platform is adopted to provide comprehensive simulation for single well instruments and executing mechanisms. The functions and the performances of the hydraulic control system are comprehensively tested through an off-line simulation mode, the system problems are found and solved before installation, and safety risks cannot be caused by logic errors or controller hardware problems.

Inventors

ZHAO XIAODONG
WU DONGHUI
ZHANG LONG
CHANG YOUQING
QU LI
LU QINGQING
LI ZHIGANG
Yang Fuxiao

Assignees

中国石油天然气股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241104

Claims (10)

1. The simulation testing device of the gas production single well hydraulic control system is characterized by comprising a first controller (1), a second controller (2), a first secondary digital display meter (5-1), a second secondary digital display meter (5-2) and a data processing module; The output signals of the second controller (2) are converted and isolated through a first secondary digital display meter (5-1) and then are sent to an input channel of the first controller (1) to simulate a field instrument signal, the output signals of the first controller (1) are converted and isolated through the second secondary digital display meter (5-2) and then are sent to an input channel of the second controller (2) to be received as instruction signals, the first controller (1) and the second controller (2) are connected with the data processing module to achieve data processing, an output port of the first controller (1) is connected with an energy storage structure, and an output end of the energy storage structure interacts with the second controller (2).
2. The simulation test device of a single well hydraulic control system for gas production according to claim 1, wherein the data processing module comprises a processor (3); The processor (3) is communicated with the second controller (2) through the network switch (4) and is used for setting test parameters, sending test instructions to the second controller (2) and collecting feedback signals received by the second controller (2), and the first controller (1) receives instructions of the processor (3) through the network switch (4) and sends interlocking action instructions to the on-site valve.
3. The simulation test device of the gas production single well hydraulic control system according to claim 2, wherein the processor (3), the second controller (2) and the first controller (1) are all connected with the network switch (4) through communication cables.
4. The simulation test device of the gas production single well hydraulic control system according to claim 1, wherein an output port of the first controller (1) is connected with a first safety valve (7-1), a second safety valve (7-2) and a third safety valve (7-3), one end of the first safety valve (7-1), one end of the second safety valve (7-2) and one end of the third safety valve (7-3) are connected with a hydraulic system (6), and the other end of the first safety valve (7-1), the other end of the second safety valve (7-2) and the other end of the third safety valve (7-3) are connected with the energy storage structure.
5. The simulation test device of a single well hydraulic control system for gas production according to claim 4, wherein the first safety valve (7-1), the second safety valve (7-2) and the third safety valve (7-3) are all connected with a hydraulic system (6) through a hydraulic pipeline (12), and the first safety valve (7-1), the second safety valve (7-2) and the third safety valve (7-3) are all connected with the energy storage structure through the hydraulic pipeline (12).
6. The simulation test device of a single well hydraulic control system for gas production according to claim 4, wherein the first safety valve (7-1), the second safety valve (7-2) and the third safety valve (7-3) are all connected with the first controller (1) through a signal cable (11).
7. The simulation test device of a single well hydraulic control system for gas production according to claim 4, wherein the energy storage structure comprises a first energy storage (9-1), a second energy storage (9-2) and a third energy storage (9-3); The first energy accumulator (9-1) is connected with the first safety valve (7-1), the second energy accumulator (9-2) is connected with the second safety valve (7-2), and the third energy accumulator (9-3) is connected with the third safety valve (7-3).
8. The simulation test device of a single well hydraulic control system for gas production according to claim 7, wherein a first pressure transmitter (8-1), a second pressure transmitter (8-2) and a third pressure transmitter (8-3) are respectively arranged between the second controller (2) and the first energy accumulator (9-1), between the second energy accumulator (9-2) and the third energy accumulator (9-3).
9. The gas production single well hydraulic control system simulation test device according to claim 8, wherein the first pressure transmitter (8-1), the second pressure transmitter (8-2) and the third pressure transmitter (8-3) are all in communication with the second controller (2) through a signal cable (11).
10. A test method of a simulation test device for a single-well hydraulic control system for gas production, which is characterized in that the simulation test device for the single-well hydraulic control system for gas production according to any one of claims 1 to 9 is adopted, and comprises the following steps: The second controller (2) sends an output signal, and the output signal is transmitted to an input channel of the first controller (1) after being converted and isolated by the first secondary digital display meter (5-1); After receiving the signal from the first secondary digital display meter (5-1), the first controller (1) outputs the signal to the input channel of the second controller (2) after the signal is converted and isolated by the second secondary digital display meter (5-2), and the second controller (2) responds after receiving the instruction signal from the second secondary digital display meter (5-2); in the process of signal transmission and reception, a data processing module is adopted to record all instrument signals and control instructions interacted by the first controller (1) and the second controller (2), and the energy storage condition of the energy storage structure is monitored.

Description

Simulation testing device and method for gas production single well hydraulic control system Technical Field The invention belongs to the technical field of natural gas exploitation, and relates to a simulation test device and a simulation test method for a single-well hydraulic control system for gas production. Background The hydraulic device is characterized in that a three-level hydraulic safety valve is arranged in a gas production single well, wherein the three-level hydraulic safety valve comprises an underground safety valve, a main safety valve and a wing safety valve, the hydraulic mechanism of a hydraulic control cabinet is used for providing high-pressure hydraulic oil to drive the valve to open, the spring is used for resetting the valve to close when the hydraulic pressure is lost, and the three-level hydraulic safety valve is provided with oil pressure, all layers of jacket pressure, primary throttling pressure, secondary throttling pressure, wellhead temperature, primary throttling temperature, secondary throttling temperature, a single well metering flowmeter, a combustible gas detector and other instruments. The gas production single well hydraulic control system is commonly called a hydraulic control cabinet on site and consists of a set of PLC system and a hydraulic mechanism. The PLC collects all instrument parameters and the state of the automatic control valve of the gas production well head, and automatically controls the automatic control valve of the well head. The interlocking shut-in logic comprises 1) alarming for high pressure after wellhead secondary throttling, and interlocking closing a main safety valve and a wing safety valve (commonly called shut-in), 2) alarming for low pressure and high pressure drop rate after wellhead secondary throttling, judging that a pipeline bursts by a system, triggering the interlocking shut-in, and 3) melting a gas production tree fusible plug (fire disaster, high-temperature melting fusible plug), and interlocking closing the main safety valve, the wing safety valve and the underground safety valve. The method belongs to mechanical linkage, and does not need a PLC to collect signals and send well closing signals, and comprises the steps of 4) carrying out on-site ESD button linkage well closing on a hydraulic control cabinet, 5) carrying out on-site combustible gas alarm interlocking well closing, and 6) carrying out remote well closing on a main control room. At present, the testing work of wellhead hydraulic control systems of various factories is divided into two processes, namely testing before delivery and system joint debugging testing after field installation. The first test before delivery adopts single signal channels to test one by one, so that the input and output signal channels of the controller are ensured to be normal, and the wiring in the cabinet is ensured to be correct. Secondly, the on-site system joint debugging test comprises the steps of firstly calibrating wires to ensure the wiring of each control loop to be correct, secondly, opening a channel, sending AI signals (4-20 mA) or DI signals to the on-site instrument end one by one loop, checking whether the received signals are consistent with the on-site signals at the controller end, sending AO and DO signals at the controller end, and checking whether the signals are consistent with the signals sent by the controller at the on-site end. And thirdly, carrying the instrument and the executing mechanism, and testing each interlocking logic to ensure that each interlocking logic can act correctly according to the design. The existing single-well hydraulic control system joint debugging test has the limitations that (1) the test can be carried out after the construction of the process facilities of a gas production well field is completed, the hydraulic control system is installed on site, the problem occurs in the test process, the time is wasted in the on-site solution, and the single-well production time is influenced, (2) the new hydraulic control system is tested by the on-site instrument and the executing mechanism, so that the safety risk exists, and if the control logic or the hardware of the hydraulic control system is in a problem, the instrument and the automatic executing mechanism can be damaged, or the process safety accident can be caused. Disclosure of Invention The invention aims to solve the problem that the instrument and the automatic executing mechanism are possibly damaged due to the limitation of joint debugging test of the existing single-well hydraulic control system in the prior art, and provides a simulation test device and a simulation test method for a gas production single-well hydraulic control system. In order to achieve the purpose, the invention is realized by adopting the following technical scheme: The invention provides a simulation test device for a gas production single well hydraulic control system, which comprises a first controller