id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-25655	Wang, Shaonan; Qiao, Yang; Fan, Jianjian; Zhou, Qingfeng	Research on Production Operation System of Sucker Rod Pumping Units	2024	5	.pdf	application/pdf	4078	204	49	From the perspective of sucker rod pumping unit production operation, a literature review is conducted on the flow patterns in the wellbore, pump efficiency analysis, and intermittent oil extraction systems, clarifying the optimization objectives of liquid production and system efficiency, and sorting out from the aspects of dynamic liquid level, pump efficiency, reasonable submergence depth, and intermittent operation systems. Key factors affecting pump efficiency [8][9]: First, the sucker rod and tubing undergo elastic deformation under cyclic loading, which affects the effective stroke of the plunger and reduces the volume of discharged liquid; second, if the pump chamber intakes a mixture of gas and liquid or the reservoir supply is insufficient, it will affect the flow of liquid into the pump chamber; in addition, gaps within the pump and wear of components may lead to a decrease in flow, and the pump body may be damaged by corrosion and sand particles during long-term operation, affecting the stability and efficiency of the pump; finally, due to the action of reservoir pressure, gas is compressed into the fluid during the pumping process, and crude oil will shrink in volume after being lifted to the ground due to degassing, which also affects the calculation of pump efficiency.	cache/ajst-25655.pdf	txt/ajst-25655.txt