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针对油田人工裂缝为水平缝的重复压裂井,以油田为研究对象,初步界定了重复压裂选井选层工艺方法;应用试井分析和流动指数方法判断重复压裂时机;经过研究找出了重复压裂井裂缝失效的主要原因。根据裂缝失效的原因,确定了增大施工规模、酸洗裂缝以及多裂缝、开新缝压裂等项改造措施。结合理论研究在油田现场试验,取得较好效果。
Aiming at the fracturing wells with horizontal fractures in the oilfield, taking the oilfield as the research object, the method of fracturing well selection and fracturing is preliminarily defined; the well test and flow index method are used to judge the timing of repeated fracturing; The main reason for the failure of fractures in fracturing wells. According to the reason of the failure of the crack, the reconstruction measures such as increasing the scale of the construction, pickling cracks and multiple cracks and breaking fractures were determined. In combination with theoretical research in the field test field, and achieved good results.