PETROLEUM PREPARATION PLANT Russian patent published in 1998 - IPC

FIELD: petroleum preparation plants in oil fields, also applicable in petroleum refining industry. SUBSTANCE: the plant provides for three stages of petroleum preparation. In the first stage, including a block separator and a preliminarily discharge reservoir, petroleum is separated from the main mass of stratal water. In the second stage, containing an additional process reservoir and a pipe-line of slightly mineralized underlying water, a high dewatering and partial demineralization of petroleum are carried. In the third stage, including a crude pump, heat exchanger, heater, settling tank, electric dehydrator, terminal separator, a high demineralization of petroleum is provided. The content of salts in prepared petroleum does not exceed 40 mg/l. EFFECT: reduced consumption of fresh water, reduced consumption of electric power for petroleum heating. 1 dwg