In oil and gas production, a throttle manifold is used to reduce wellhead pressure. It consists of a set of high-pressure valves and at least two throttling valves.
The choke manifold is a piping and valve arrangement with adjustable throttle valves. The assembly is primarily responsible for controlling flow and pressure in various industrial applications such as onshore and offshore oil well testing and production operations.
1. The choke manifold is the necessary device to implement well pressure control technology. It works on controlling the pressure, maintaining pressure balance inside the well and avoiding overflow and blowout;
2. To get too soft shut-in by choke valve pressure release, and to protect well mouth by open flow;
3. The choke line manufactured by our company conforms to the API 16C, NACE MR0175 Standards;
4. Special choke lines can be designed and made according to users' needs.
5. In case of malfunction of one chock valve, it is needed to close the upper and down valves and put the down valve of another chock valve into work;
6. When it needs open flow, it is necessary to open the flow valve and close the inlet valve of the drilling liquid-gas separator;
7. By means of the chocking effect of the check valve, the chock manifold can work on good control, replace the polluted drilling liquid, control the casing pressure and standpipe pressure of good mouth and recover the pressure on the well bottom caused by drilling liquid and curb overflow;
8. Pressure relief function of the check valve can be used to reduce the pressure of a good mouth and realize "soft shut in";
9. Releasing liquid (gas) largely by a straight flow valve can reduce the casing pressure of a good mouth and protect the well mouth blowout preventer unit.
| Specification | Cold working press | Main diameter, side diameter mm(in) | ||||
| 52(2-1/16") | 65(2-9/16") | 79(3-1/8") | 78(3-1/16") | 103(4-1/16") | ||
| JG-21 | 21Mpa(3000psi) | √ | √ | √ | √ | |
| JG-35 | 35Mpa(5000psi) | √ | √ | √ | √ | |
| JG-70 | 70Mpa(10000psi) | √ | √ | √ | √ | |
| JG-105 | 105Mpa(15000psi) | √ | √ | √ | √ | |
| Working temperature: -29~121ºC; Product specification level: no less than PSL3; material grade (valve, joint): EE-FF; Working medium: mud, petroleum, natural gas |
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In oil and gas production, the choke manifold is used to reduce wellhead pressure. It consists of a set of high-pressure valves and at least two throttle valves. These chokes can be fixed or adjustable or both.
A choke manifold is an arrangement of pipes and valves with adjustable throttle valves. This component is primarily responsible for controlling flow and pressure in various industrial applications such as onshore and offshore well testing and production operations.
| Choke Manifold | Throttle Manifold | Choke and Kill Manifold | |
| Function | Control the flow of fluids in the well during drilling operations to maintain pressure control and prevent blowouts. | Control the flow of fluids in the well during production operations to regulate the flow of oil or gas. | Used during well control operations to control the flow of fluids and gases in the event of a blowout. |
| Components | Choke valves, manifolds, and gauges. | Throttle valves, manifolds, and gauges. | Choke and kill lines, chokes, valves, and gauges. |
| Operating Pressure | High pressure (up to 15,000 psi) | Lower pressure (typically up to 5,000 psi) | High pressure (up to 15,000 psi) |
| Purpose | To control the flow of fluids and prevent blowouts during drilling. | To regulate the flow of oil or gas during production. | To control the flow of fluids and gases in the event of a blowout. |
| Location | Located on the rig floor or nearby. | Located on the wellhead or nearby. | Located on the rig floor or nearby. |
| Usage | Used during drilling operations. | Used during production operations. | Used during well control operations. |
