API Stainless Steel Wellhead equipment

API Stainless Steel Wellhead Equipment

The KQ series wellhead equipment consists of bottom flange, upper flange,tubing head, gate valve,needle valve, small cross,stop valve,and meter,etc.

Principal Features for Stainless Steel Wellhead:

1,Design and manufacture are carried out in accordance with Standard SY5156 and API Spec.6A;
2,Non-rising stem gate valve with switch indicator;
3,To ensure wellhead safety, all Pressurized parts and flanges on the wellhead equipment are made of high grade alloy steel by press forging which are also subjest to non-destructive tets and heat treatment, achieving excellent sulfide-resistant performance;
4,Special lubricated device used to ensure smooth lubrication between ram and valve seat, and also prevent sealant from losing;
5,Reliable in performance and durable in usage in usage due to its small on-offtorque

The Christmas tree is an assembly of valves, spools and fittings for an oil well, and to design to direct and control formation fluids from the well. It can provide inlet for production tubing strings, including all components above the tubing head adapter. Christmas tree assemblies can constitute many different kinds of combinations in order to meet any special requirement. Based on their different functions, Christmas trees can be classified into such special Christmas trees as oil production (flowing and artificial lift) Christmas trees, gas (natural gas and various sour gas) production Christmas trees, water injection Christmas trees, thermal recovery Christmas trees, fracturing Christmas trees and acidizing Christmas trees. Different pressure ratings serialize Christmas trees.

The gas production Christmas tree and tubing head are mainly used to produce gas and inject gas. The relative density of natural gas is low and gas column pressure is low, while well head pressure is high and liable to leakage regardless of gas production and gas injection. Sometimes natural gas contains corrosive media such as H2S and CO2. Therefore, the gas production Christmas tree calls for rigid requirements on both its materials and its sealing characteristics. For the sake ofsafety, two gate valves are used on the tubing and casing respectively. Some gate valves to be used on high pressure and ultra-high pressure gas wells are integrated valves manufactured from high quality forged steel.