The manifold is a necessary equipment for controlling kick and implementing pressure control technology in oil and gas wells. Under the condition that the blowout preventer is closed, a switch to adjust the width is used to control a certain casing pressure, so that the bottom hole pressure is always slightly higher than the formation pressure, and the formation fluid will not flow into the well.
In addition, soft shut-in well can be completed by choke pipe to discharge pressure. When the pressure in the well rises to a certain level, the choke manifold ejects through it to protect the wellhead. The choke manifold is composed of throttle valve, pipe, pipeline, pressure gauge, etc.
The interior of the tube is designed with a shrinking hole. When the medium passes through this hole, the flow rate in the center of the hole will slow down, while the flow rate around it will speed up. Due to the change in flow rate, the pressure of the medium will also change. At the contraction channel, the velocity of the medium increases and the static pressure decreases. At the same time, the Karman vortex forms in the contraction channel, which converts the kinetic energy of the medium into internal energy and causes the temperature to rise. Therefore, the choke tube also has a certain cooling effect.
When the medium in the choke tube flows through the shrinking hole, the kinetic energy and pressure energy of the medium decrease due to the increase of the medium speed and the pressure, while the potential energy of the medium can be ignored. Then, the flow rate of the part close to the surface of the choke begins to decrease sharply. At this time, the vortex weakens, the medium energy dissipates, and the flow returns to the normal state. The eddy current controller is effectively used to eliminate the uneven flow and reduce the leakage and vibration. Finally, the flow rate after the medium flows through the throttle tube is determined by the size of the choke hole and the manufacturing process.
In short, the API 16 C choke manifolds adopt the design of shrinking aperture to control the flow of gas and liquid, and controls the flow of medium through the change of speed and pressure, which has the advantages of simple, reliable, corrosion resistance and compact structure. According to the points action principle, there are two different types of the choke manifolds in terms of hand choke manifolds and hydraulic choke manifolds.
Choke manifolds from Vigor are designed and manufactured in strict accordance with API 16 C standard. And before the delivery, we have many strict checks to ensure the high quality of the product. Vigor's team will provide customers the whole process records with manufacturing, packaging and delivery through photos and related reports. Customer satisfaction is the biggest driving force for the development of Vigor. If you interested in our products, please contact us to get more information and professional service.
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