Rationale for the Degree of Pressure Reduction in the Oil Well Annular Space during Forced Pumping of Gas by a Double Piston Supercharger into the Reservoir
The decrease in gas pressure in the annular space to stabilize modes of operation and increase production of artificial lift wells is a considerable reserve to increase oil extraction. Suspended compressors widely used in practice and currently applied to the pumping unit for forced exhaust of gas from the annular space of oil wells into the collector have demonstrated the efficiency of their application as a whole. But the compressors have a considerable disadvantage, namely, there is no possibility of using them for other artificial lift methods of well operation by means of installations fitted out with screw pumps and electric centrifugal pumps. A technical solution is known that excludes this drawback with the help of a two-piston gas blower from the annular space of oil wells to the collector, based on the principle of using the pressure developed by the pump. However, the selection of the standard size of a two-piston gas supercharger depending on the pressure in the manifold and the degree of pressure reduction in the annular space requires its solution. Unresolved is also the issue of forcing gas from the annulus into the reservoir of an oil well group. The paper presents the calculated dependence of the degree of reduction of the annular gas pressure on the pressure in the reservoir and the geometric parameters of the two-piston gas supercharger, as well as the proposed installation for pumping gas from the annular space into the reservoir of oil wells in the cluster drilling fields.