Paper: PUMP-OFF CONTROL FOR GAS ENGINE DRIVEN PUMPING UNITS

Through cooperation of Amoco E & P Sector's Hackberry Field, D-Jax Corporation, Amoco Argentina, and Amoco's Tulsa Research Center, a new type of pump-off controller for a gas engine driven pumping unit has been developed. The processes of reducing well pump off and fluid pound for a gas engine driven beam pumping unit has been to reduce shieving, engine speed, and stroke length. The problems occurring with these types of solutions are numerous. There is still the possibility of well bore pump down or a gradual increase in well bore fluid level. Both of these results are tedious and time consuming. The stroke per minute timing will have need be changed whenever the fluid level changes high or low. Or, the high fluid above pump (FAP) will begin to reduce inflow from the formation due to hydrostatic pressure buildup in the casing.