POST OF CONTROL OF CHRISTMAS TREE AND UNDERGROUND CUTOFF VALVE OF GAS PRODUCING WELLS Russian patent published in 2002 - IPC

FIELD: gas producing industry. SUBSTANCE: post has control cabinet, membrane pneumohydraulic media separators installed, both, on control line of Christmas tree and underground cutoff valve and also on control line only of side gate valve. Installed on line of control of side gate valve are normally closed three-line two-position air distributor and normally open three-line two-position air distributor. Installed on line of control of Christmas tree and underground cutoff valve is normally closed three-line two-position air distributor. Mounted in control cabinet are pneumatic and hydraulic system of control of Christmas tree and underground cutoff valve. On post with additional normally open three-line two-position air distributor, its inlet cavity is communicated by means of pipeline with control line of cabinet pneumatic system and outlet cavity is connected with cavity of air distributor inlet. Cavities of drives of air distributors are communicated by means of channels with hydraulic cavities of media separator. Gas cavity of media separator installed on control line of side gate valve is connected by means of pipeline with well flow line. Gas cavity of media separator installed on control line of Christmas tree and underground cutoff valve is connected with Christmas tree by means of pipeline. EFFECT: improved design. 2 cl, 2 dwg