method and apparatus for separating gas and liquid from gas well head

摘要

A system for processing natural gas wellhead effluent comprising a three phase low pressure separator connected to the wellhead, a compressor connected to the low pressure separator and a two phase high pressure separator connected to the compressor and the sales gas pipe line. The compressor receives relatively low pressure gases from the low pressure separator and compresses the gases to a relatively high pressure and temperature. The high pressure and temperature gases pass from the compressor to the high pressure separator through a heat exchanger in the low pressure separator to provide heat for operation of the low pressure separator and then through a cooler to reduce the temperature of the gases prior to entry into the high pressure separator at a pressure and temperature approximately equal to gas pipe line pressure and temperature. Residual liquid hydrocarbons in the compressed gases are removed in the high pressure separator and returned to the low pressure separator and sales gas is delivered to the sales gas pipe line from the high pressure separator.