Fixed-point multi-stage fracturing method for improving longitudinal transformation degree of dense thick layer

The invention discloses a fixed-point multi-stage fracturing method for improving the longitudinal transformation degree of a dense thick layer. According to the development condition of a reservoir interlayer, temporary plugging fracturing is adopted to realize fixed-point multi-stage fracturing for longitudinal full use of the dense thick layer, and in combination with a fracturing construction curve and dipole acoustic wave tests before and after fracturing, transformation of the dense thick layer and independent cracking and extension of each section of crack are realized. Compared with a conventional volume fracturing technology, the transformation cost can be effectively reduced, and the method has important significance for efficient development of the dense thick layer and is expected to be developed into a main body transformation technology of an ultra-low-permeability III-type dense thick layer. 本发明公开了一种提高致密厚层纵向改造程度的定点多级压裂方法，根据储层隔夹层发育情况，采用暂堵压裂实现致密厚层纵向充分动用的定点多级压裂，结合压裂施工曲线及压裂前后偶极声波测试，实现致密厚层的改造以及各段裂缝独