水平井分段压裂多段裂缝产能影响因素分析

国内外水平井应用情况表明,低渗透油藏的水平井,不经过压裂酸化改造很难达到工业开采价值,而水平井水平段分段压裂改造是提高水平井在低渗储层应用效果的技术瓶颈.水平井多段裂缝如何优化设置,将决定压裂工艺和工具的选择,最终关系到压后效果.以压后产量为目标函数.以数值模拟为技术手段,研究了影响水平井多段裂缝压后产量的8种因素,为下步水平井分段压裂多段裂缝优化研究提供了参考.

Factors affecting the productivity of multi-section fractures in subsection fracturing of horizontal wells

Application at home and abroad shows that horizontal wells in low permeability reservoirs are often difficult to produce commercial value output if there is no fracturing and acidizing treatment. Subsection fracturing is the bottleneck of improving application effect of horizontal wells in low permeability reservoirs. Optimization of the multi-section fracture will determine the selection of fracturing technology and tools, and the ultimate fracturing effect. With the production rate after fracturing as objective function and numerical simulation as technical means, this paper studies 8 factors affecting the production of horizontal wells after subsection fracturing. This gives a reference basis to the optimization study of multi-section fractures in subsection fracturing of horizontal wells.