1. There are many gas wells in the gas field, and the workload of gas well switching operations is enormous.
2. There are many low yield wells, production wells, and intermittent wells, making on-site management difficult.
3. The existing valves (wellhead block valves and wellhead solenoid valves) that have achieved remote control of well opening and closing are in the form of instant opening and closing, without adjustment function; Only low-pressure gas wells (with a casing pressure of 6MPa) can be operated on and off immediately, and the valve opening cannot be controlled. For gas wells with a casing pressure greater than 6MPa, manual on-site opening and closing are still relied upon. However, there is a shortage of actual on-site operators, especially for large-scale gas well opening operations, which require a huge workload and low efficiency, and to some extent cannot meet the needs of gas well production management.

Improve the needle valve into an electric needle valve, which is linked with the emergency shut-off valve. Through an intelligent controller, the existing signals of oil pressure, pipe pressure, flow meter, block valve, etc. are collected and processed as the basis for remote intelligent well opening and closing. With the support of a wireless transmission system, simulate manual well opening and closing, and ultimately achieve remote intelligent well opening and closing function.

The remote intelligent switch well system equipment mainly consists of electrically controlled balanced control valves, electrically controlled emergency shut-off valves, intelligent wellhead controllers, valve opening control sensors, solar and wind power supply systems, as well as oil sleeve pressure transmitters, pipe pressure transmitters, flow meters and other equipment.

performance parameter
1. The basic parameters of the electrically balanced control valve are as follows:
Rated pressure: 70MPa;
Nominal diameter: 65mm (2 9/16 ');
Connection form: API SPEC 6A flange connection;
Flange specification: 2 9/16 '~10000psi (BX153);
Working medium: petroleum, natural gas;
Rated temperature:- 29 ℃~121 ℃ (P • U level);
Product specification level: PSL3；
Performance requirement level: PR1；
Rated material grade: DD；
Manufacturing standards: AP1Spec.6A；
Maximum power: 40W.
2. The power consumption parameters of the system are as follows:
1) Power of straight channel cut-off valve: 110W 20W;
Valve opening time: 100W for 6 seconds and 20W for 2 seconds;
Valve closing time: 20W2 seconds;
Maximum power working pressure: 22Mpa.
2) Electric balanced control valve rate: 40W;
Open the valve once for 170 seconds at 40W;
Valve closing time: 170 seconds for 40W operation;
Maximum power working pressure: 22Mpa.
3. The parameters of the solar power supply system are as follows:
One 150Ah battery and one 150W solar energy.

1. Remote and local normal well opening - system issues well opening instructions - main control system - emergency shut-off valve - regulating valve - normal well opening;
2. Remote and local normal well closure - system issues well closure instructions - regulating valve - emergency shut-off valve - normal well closure;
3. Remote and on-site emergency well shutdown - system issues emergency well shutdown instructions - emergency shut-off valve - regulating valve - synchronous closure - emergency well shutdown;
4. Intelligent automatic well shutdown - system detects pressure abnormalities - automatically issues emergency well shutdown instructions - emergency shut-off valve - regulating valve - synchronous closure - automatic well shutdown.

1. Implement remote opening and closing control function for natural gas wellhead
2. The function of opening and closing the well can be automatically implemented without on-site participation
3. It has two opening and closing methods: remote and on-site
4. Retain the emergency shut-off function of the original emergency shut-off valve
5. Ensure the original needle valve throttling control function
6. The power supply adopts a solar power supply system
7. Remote transmission using existing radio stations or bridges
8. Working temperature:- 40~85℃
9. Explosion proof grade: Exd II BT4
10. It has waterproof function
11. It has sand prevention function