Patent ID: 8701772
Filing Date: 2014-04-22
Classification: E21B,F04B

Abstract:
1. A method for controlling a compressor-valve assembly in a downhole heated fluid generation system, comprising: determining an input indicative of a desired position of a valve in the compressor-valve assembly; determining a value indicative of an actual position of the valve; scaling the value indicative of the actual position of the valve through a filter, the filter comprising a frequency-weighted filter, and the scaled value indicative of the actual position of the valve comprising an average position of the valve; determining a difference between the input indicative of the desired position of the valve and the scaled value indicative of the actual position of the valve; determining a desired operating condition of a compressor in the compressor-valve assembly based, at least in part, on the input indicative of the desired position of the valve and the value indicative of an actual position of the valve; and adjusting an operating parameter of the compressor based on the desired operating condition to compress a fluid flowing through the compressor and the valve of the compressor-valve assembly.