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鄯善油田属于“低孔、低渗、低粘”油田,经过近十年的注水开发,油田已进入中含水开发期, 接替潜力层逐渐转向Ⅱ、Ⅲ差油层,压裂挖潜对象也转变为Ⅱ、Ⅲ差油层和水淹层,地应力也发生了变 化,人工裂缝方位的不确定性增大。适时引进微地震裂缝监测系统,监测评价裂缝产状,充分利用监测 结果评价研究裂缝规律性,及时进行注水调控,为控制压裂井含水上升、提高改善开发效果起到了积极 作用,为水淹层压裂拓宽了思路。
The Shanshan Oilfield is a “low-porosity, low-permeability, low-viscosity” oilfield. After nearly a decade of waterflood development, the oilfield has entered the middle water-cut development period. Ⅱ, Ⅲ poor oil and water flooded layer, the ground stress also changed, the uncertainty of artificial fractures increased. The timely introduction of micro-seismic fracture monitoring system to monitor the assessment of fracture occurrence, make full use of monitoring results to evaluate the study of fracture regularity, and timely water injection control, in order to control the fracturing well water rise, improve the development effect has played a positive role for the flooded layer Fracturing broadens thinking.