Microprocessor Control of Offshore Enhanced Oil Recovery Project

The proportioning of natural gas liquids among six injection wells while controlling the corresponding gas necessary to maintain a specified liquid to gas ratio for each individual well is discussed. To accomplish this proportioning, the system selects a master well, controls both liquid and gas header pressure, and calculates corrected flow rates. In addition to these functions the microprocessor also prints on demand both instantaneous flow rates and cumulative volume injected for each well.