Impacts of Gas Compressive Effects of Rod Pumps on System Efficiency

Beginning with the relationship between the power and efficiency of rod pumps, this paper analyzes the causes of low system efficiency of wells installed rod pumps. It is believed that the compressive effects of gases in the chambers of rod pumps are the main causes and corresponding formula are derived. The impacts of gas compressive effects in chambers of rod pumps on pump efficiency are exemplified through real calculation.