A new nonlinear predictive approach allows natural gas pipeline reciprocating compressors to respond rapidly to changing processes by omitting undesired or dangerous operating steps, preventing costly compressor shutdowns or component failure.During an investigation of interstage pressures, a stepping algorithm allows examination of volumetric efficiency, rod loading, and other variables, thus predicting appropriate load-unload steps. Applying the algorithm results in effective process loading and unloading and safe compressor operation.Maximizing compressor throughput, bounded by equipment and pipeline protection parameters, involves establishing an automated unloading-loading sequence t...