What are the components of gas production wellhead equipment?
Gas production wellhead device is mainly composed of casing head, tubing head and oil production (gas) tree. The casing head is mainly used to connect the casing of each layer and the production casing, and seal the annulus between the two layers of casing. The tubing head is mainly used to suspend the running tubing and seal the annular space of tubing and casing. Christmas tree is mainly used for opening and closing wells, adjusting pressure and production during production, running pressure gauge test, wellhead pressure measurement, small fishing and other operations.
The wellhead equipment for gas production includes casing flange, tubing head and Christmas tree; its features are: on the left and right sides of the tubing head and the left, right and lower sides of the Christmas Tree Cross, a manual connecting valve is installed where two flat valves need to be installed in series; and the valve body of the manual flat valve above the Christmas Tree Cross is connected with the Christmas Tree Cross, Make it a four-way flat valve component.
The combined valve and four-way flat valve can choose the flat valve with Non rising stem and the flat valve with rising stem as the merging object; except for the valve body and valve stem, the other similar parts of the flat valve are common to each other. Therefore, on the basis of keeping the original functions of wellhead devices unchanged, the space size of gas production wellhead devices is greatly reduced, raw materials and installation time are saved, and the links that may cause high-pressure leakage are reduced, which is more conducive to the field control of oil workers, so as to achieve the purpose of reducing consumption and increasing benefits.