High Pressure Manifold With Air Chamber And Safety Valve For Drilling Rigs

Working Principle

The reciprocating motion of the drilling pump pistons pressurizes the drilling fluid. The high-pressure drilling fluid is discharged from the fluid end of the drilling pump and first enters the branch lines of the high-pressure manifold; the fluid from multiple pumps is merged into the main line through tees. The air chamber on the manifold buffers the periodic pressure pulsation generated by the drilling pump, making the output pressure stable. The high-pressure drilling fluid then flows along the high-pressure elbows and straight pipes, through the kelly hose, to the swivel, into the interior of the drill string, and down to the bottom hole. The returning drilling fluid from downhole flows back through the annulus to the surface solid control system.

When the downhole becomes plugged and the pump pressure rises abnormally above the preset safety pressure, the safety valve installed on the manifold automatically opens to release the high-pressure drilling fluid, reducing the system pressure and protecting the entire equipment. Through the pressure sensor on the manifold, the driller's console reads the pressure in the line in real time, keeping abreast of downhole conditions at all times.

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.