FIELD: optimizing fluid recovery.
SUBSTANCE: method for optimizing fluid withdrawal from a well equipped with a sucker rod pump unit; includes operating a well equipped with a rod pump with an anti-sand anchor installed at the pump intake, identifying wells with production capabilities exceeding the plant capacity, measuring reservoir and bottomhole pressures. The productivity factor is determined; the study is carried out in modes that provide maximum pump performance, with the creation of drawdown on the reservoir and the removal of the bridging agent from the bottomhole zone. Downhole pumping equipment is being replaced with an increase in the standard size of the rod pump, fluid is withdrawn while ensuring the design bottomhole pressure. The anti-sand anchor is equipped with a container of branch pipes connected by adapters, which allows installing outer casings on each branch pipe through the coupling, having an expanding socket in the form of a truncated cone in the upper part, and a plug in the lower part of the container. Depression is created before the replacement of the pump for a larger size in cycles, forcing the withdrawal of fluid to remove mechanical impurities from the formation. Change the swing frequency of the rod pump drive balancer using a frequency-controlled electric drive from the maximum possible for the rod pump drive with a decrease in pump submergence under the dynamic level by 100 meters to the minimum possible at least 1 swing per minute until the pump subsidence under the dynamic level is restored at least 500 meters. Control changes in the dynamic level by an echo sounder and sample for the content of mechanical impurities in the liquid during the depression cycle. Replace the downhole pumping equipment and the rod pump with a larger standard size.
EFFECT: increased reliability of the rod pump during operation and increased overhaul period of the installation, increased efficiency of the pump.
1 cl, 1 dwg
