The invention relates to a
lipopeptide-containing composite
oil displacement agent and a use method thereof. The use method comprises the steps that S1, a
weak base solution is injected into a stirring chamber through a first
injection port to be stirred, a first composition formed by
petroleum sulfonate and
lipopeptide is injected into the stirring chamber through a second
injection port to be stirred with the
weak base solution to form a second composition, a
polymer is injected into the stirring chamber through a third
injection port, and the
polymer is mixed and stirred with the second composition to form a
lipopeptide-containing composite
oil displacement agent; S2, a liquid conveying pump is started, the lipopeptide-containing composite
oil displacement agent is conveyed to a
liquid injection pipe through a detection
pipe, a regulating valve is opened by a central
control unit, and the lipopeptide-containing composite oil displacement agent is injected into the natural
rock core; and S3, the central
control unit controls an oil extraction device to extract oil. According to the use method, the central
control unit is arranged, the input amount of different materials is controlled by arranging different injection ports according to the real-time
viscosity of the formed lipopeptide-containing composite oil displacement agent, and the oil
recovery rate is increased by adjusting the conveying pressure of the input pump and the opening area of the
liquid injection pipeline adjusting valve.