为最优地开发储油层而设计并实施液压压裂计划时,了解裂缝的几何形态和发育情况是极为重要的。压裂的成本一般随裂缝半长度呈指数增加。此处定义裂缝半长为假想的垂向平面裂缝距井壁的横向距离。 生产速度同样也随裂缝半长而增加,但随着该半长值的增加(图(?)b),递增的产量则逐步下降。这就表明,为使储层的出油气量达到最大,非常有必要在储层与裂缝特征之间做出某种平衡。液压裂缝压裂的现有价值曲线呈下凹形,也就是说,在某一个裂缝长度处能达到最佳压 When designing and implementing a hydraulic fracturing plan to optimally develop a reservoir, understanding the geometry and development of the fracture is of paramount importance. The cost of fracturing generally increases exponentially with half the length of the fracture. Here, we define the horizontal distance of fissure half-length to imaginary vertical plane crack from the well wall. The production rate also increased with the half-length of the crack, but with the increase of the half-length value (Fig. (B)), the incremental output decreased gradually. This shows that in order to maximize the amount of oil and gas produced in the reservoir, it is necessary to strike some balance between reservoir and fracture characteristics. The existing value curve of hydraulic fracture fracturing is concave, that is to say, the optimum pressure can be achieved at a certain crack length