CHOKE MANIFOLDS
Choke manifold is an assembly of high-pressure valves and fittings used in oil and gas industry. Primary purpose of choke manifold is controlling (opening and closing) of well stream, as well as lowering or adjusting its pressure during oilfield operation. The main components of choke manifold are adjustable or/and positive chokes, high-pressure valves, and fittings that are mounted on the skid. Choke manifold is designed considering oilfield conditions, such as production rate, ambient and working temperatures, well pressure, and composition of flow. Design standard for choke manifold varies from country to country. However, the most referred standard is API 6A and API 16C. If choke manifold is used in areas with high presence of sour gases, sour service or stainless-steel materials are used during choke manifold manufacturing. Materials class of choke manifold are regulated by existing standards. NACE MR0175 or ISO 15156 are two commonly used requirements for materials that used in equipment with high exposure to H2S. Skid that accommodates all necessary components of choke manifold is either proposed by supplier or custom-made based on the requirements of the client. Some areas with space and weight limits, like offshore platforms, have very strict requirements to the skid of choke manifold. In oilfield, the commonly used choke manifolds are either 4-valve manifold or 5-valve manifold. Choke manifold has dual path that allows operator perform changes in one choke, while not interfering with normal operation.
In oil and gas production a choke manifold is used to lower the pressured from the well head. It consist of a set of high pressure valves and at least two chokes. These chokes can be fixed or adjustable or a mix of both. The redundancy is needed so that if one choke has to be taken out of service, the flow can be directed through another one.
deenpu can manufacture a choke manifold to meet your specific requirements, from simple low pressure to extreme sour gas service. The manifold can be designed with any number of fixed chokes, manually adjustable chokes and hydraulic chokes with a working pressure of 3,000, 5,000, 10,000 or 15,000psi. In addition, all components are manufactured in accordance with API 6A and the choke manifold assembly is constructed in accordance with API 16C specifications. Assemblies can be designed to meet API standard 53 and can be API 16C monogrammed.
| Working Pressure |
2,000 psi- 15,000 psi |
| Working Medium |
Crude oil (gas), mud, drilling fluid, gas (H2S) |
| Nominal Bore |
2 9/16" ~ 4 1/16" |
| Temperature Level |
L, P, U |
| Material Grade |
DD, EE, FF, HH |
| Manufacturing Level |
PSL2, PSL3, PSL3G, PSL4 |
| Standards |
API SPEC 6A , API SPEC 16C, NACE MR-0175 |
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