Oilfield High Pressure Manifold, Alloy Steel , For Safe Drilling Operations

Product Specification

Structural Composition and Introduction of Each Component of High Pressure Manifold

The entire discharge high-pressure manifold of the drilling pump is a modular assembly structure. Its main components are: high-pressure seamless straight pipes, high-pressure cast elbows, high-pressure tees, reducing nipples, high-pressure unions, flange assemblies, high-pressure gate valves, air chamber mounting base, safety valve mounting base, pressure gauge seat, and vibration-damping support base.

1. High-Pressure Straight Pipe: Made of high-strength alloy seamless steel pipe, integrally quenched and tempered, with thick wall, resisting internal pressure and fatigue. The inner wall is wear-treated to resist the scouring wear of barite and cuttings particles in the drilling fluid. It is the main body of the manifold.

2. High-Pressure Elbow: Forged or cast-steel high-pressure elbow, used to change the direction of fluid flow. The corner area is the most severely eroded region; the inner wall is thickened and wear-resistant, with a large-radius arc transition to reduce vortex scouring of the drilling fluid and prevent long-term erosion-induced washouts.

3. High-Pressure Tee: Used for line branching to realize the converging of multiple drilling pumps. In parallel multi-pump operation, the high-pressure mud discharged by several drilling pumps is merged into one main line, while branch ports are reserved for the safety valve and air chamber installation.

4. High-Pressure Union (Hammer Union): The most commonly used quick-connecting component in oilfield high-pressure manifolds. The union achieves high-pressure sealing by pressing metal sealing faces together. It is easy to assemble and disassemble; compared with ordinary flanges, on-site disassembly and maintenance is faster, adapting to the quick connect/disconnect needs of oilfield field operations.

5. High-Pressure Gate Valve: Serves as the on/off control component of the line, withstanding the highest working pressure of the entire system. It operates reliably and has strong sealing performance, capable of isolating a single drilling pump to enable maintenance of one pump without stopping drilling.

6. Air Chamber Mounting Base: Fixes the pulsation dampener (air chamber), which absorbs the pressure pulsation generated by the reciprocating drilling pump, reducing alternating impacts on the line and decreasing fatigue damage to the manifold and its fittings.

7. Safety Valve Mounting Base: Used to install the high-pressure safety valve of the drilling system. It is a safety protection point and the last line of defense of the entire manifold.

8. Vibration-Damping Support Base: The manifold is provided with steel structural supports and damping pads, fixing the high-pressure manifold onto the rig substructure, absorbing pipeline vibration, and preventing looseness of connections and weld cracking caused by suspended high-pressure lines vibrating.

Features

• Adopted high strength alloy steel/carbon steel appropriate to specific pressure rating, strict heat treatment technique, rigid quality control as per APl Spec 16C ;
• Equivalent to FMC WECO style Hammer Union with identical size to ensure easy replacement;
• APl Standard LP/NPT, Tubing threaded, and butt-weld end connection available;
• Complete line of standard service and sour gas wing unions in size from 1"-12" with working pressure up to 20000psi, Sour service conform to NACE specification;
• Quality and full style of hammer union seals can be provided in Buna-N, Viton, and Buna-N/Viton with a brass ring, Buna-N/Viton with a stainless steel ring, and Teflon. There are 80 Nitrile, 80 Viton, 90 Viton or upon request.
• The same figure number, size, and pressure rating are interchangeable, making it easy to match male and female subs that are frequently made-up and broken-out.