Choke Manifold

1. Application Purpose

The Choke Manifold is an essential equipment to control well kick and implement the oil and gas well pressure control technology. Under the BOP closed conditions, the use of the throttle valve’s opening and closing to control a certain casing pressure in order to maintain that the downhole pressure is always slightly larger than the formation pressure, so as to prevent the formation fluid further flow into the well. In addition, during the implementation of well shutdown, it is available to achieve a soft shutdown by virtue of pressure relief via the choke manifold. When the well pressure rises to a certain limit, it is able to protect the wellhead through blowout prevention.

2. Composition and Structure

The Choke Manifold is constituted by the throttle valve, gate Valve, pipes, pipe fittings, pressure gauge and other components.

3. Working Principle

When the well pressure increases, it is able to release the well fluids to control the casing pressure through opening and closing the throttle valve on the choke manifold (including manual adjustable type, hydraulic type and fixed type). In addition, it is available to directly open the well for gushing through the gate valve when the casing pressure is quite high.

4. Choke Manifold Specification

The pressure level of the choke manifold manufactured by Our Company is divided into five levels, namely 14Mpa, 21Mpa, 35Mpa, 70Mpa and 105Mpa. Moreover, it can also be designed according to customer requirements.

5. Application Requirements

(1) The working pressure of all parts in the choke manifold should be in compliance with the working pressure of the adopted BOP combination;

(2) The choke manifold should be installed in a place accessible to operator and it must carry out pressure test in installation, while the sealing test pressure shall be equal to the rated working pressure;

(3)The pipes should be as straight as possible, and the pipe turnings should be used 120 degrees of cast steel elbows. In addition, the pipes should have sufficiently large diameter;

(4) must be installed the working pressure gauge;

(5) During winter construction, the choke manifold should have the capability to work under low temperature conditions.

Technical Parameters Working Pressure: 2,000 Psi ~ 15, 000Psi Nominal Diameter: 21/16” ~ 41/16”