OIL-WELL PUMP ENTRY DEVICE Russian patent published in 2003 - IPC

FIELD: oil producing industry. SUBSTANCE: invention can be used for alternate delivery of oil and water to oil well pump inlet. Proposed device contains U-shaped delivery branch pipe, sub of oil-well pump receiving section and settling chamber with inlet channel in its lower part. Device is furnished additionally with settling chamber arranged in place if change of direction of liquid flow in U- shaped delivery branch pipe. Sections of channels of U-shaped delivery branch pipe are ring-shaped are formed by pipes eccentrically nested one in the other. Invention is aimed at improved reliability and increasing overhaul period owing to complete separation of hard particles from liquids and enlarging sphere of its application to possibility of handling oils of higher viscosity by increasing through put flow capacity of device channels. EFFECT: enlarged operating capabilities. 3 dwg