Abstract: Gas well flow instrumentation includes a computation unit and an interrogation unit. The computation unit measures parameters of gas flow at the well head and accumulates gas flow information over a plurality of different independent time intervals. The interrogation unit selectively accesses the stored information and makes a permanent record of the information. The interrogation unit also is used to calibrate the computation unit and to perform a number of other different functions. The interrogation unit includes an integral printer which documents the flow information for subsequent proof of acutal gas flow.

Abstract: A natural gas separation and dehydration system includes a separation stage wherein the gas is expanded to effect removal of liquid water and liquid hydrocarbons. The flow of raw gas to the separation stage may be directly from the well or via a heat exchanger in which the gas is heated by heat exchange with hot glycol, the flow being controlled in response to the temperature in the separation stage so as to maintain a desired temperature range in the latter. The gas flows from the separation stage to a dehydrator stage of special construction wherein the gas flows in both co-current and counter-current relationship with glycol.