在对薄的 (60ｆｔ)、均质油藏实施的多数传统压裂 /填砂作业中 ,整个油层厚度都实施压裂。但是 ,在对较厚的非均质油藏实施的压裂 /充填作业中 ,裂缝高度经常小于油层的厚度。可通过选择性地在低应力 (高渗透 )层中的压裂传播来控制裂缝的发育 ,但当较低应力层位于层段的顶部 In most conventional fracturing / sanding operations on thin (60 ft), homogeneous reservoirs, fracturing is performed throughout the reservoir thickness. However, in fracturing / filling operations performed on thicker heterogeneous reservoirs, the fracture height is often less than the thickness of the reservoir. Crack development can be controlled by selective fracture propagation in low stress (high permeability) layers, but when the lower stress layers are at the top of the interval