a vapor blow through avoidance method , process and system for oil producing wells developed based on an innovative theory of vapor blow through pump . the system consists of casing gas remover , dynamic fluid level detector and downhole pump . process includes adjusting casing gas remover and or pump rate based on result of comparison of the detected dynamic fluid level with the pre - set target dynamic fluid level ; therefore , it prevents vapor in annular space blowing through pump and optimizes the well production . the avoidance system applies to single or group and horizontal or vertical wells .