Media Summary: sentry 160 pumping unit with a c-96 arrow engine. 64" stroke @ 10 spm this well was recently swabbed and had the stroke shortened to reduce the drawdown on the formation. Lanzhou Petroleum & Chemical Machinery Works This is a 640 model
Sentry Chinese Pumping Unit - Detailed Analysis & Overview
sentry 160 pumping unit with a c-96 arrow engine. 64" stroke @ 10 spm this well was recently swabbed and had the stroke shortened to reduce the drawdown on the formation. Lanzhou Petroleum & Chemical Machinery Works This is a 640 model
