压裂水平井井网优化理论与方法

OPTIMIZATION THEORY AND METHOD FOR WELL PATTERNS OF FRACTURED HORIZONTAL WELLS

针对压裂水平井井网在进行缝网优化过程中遇到的问题，从宏观角度、微观角度两方面分析了影响压裂水平井井网开发效果的主要因素，提出了首先优化井网排距与裂缝半长、其次优化井网井距与裂缝间距（水平井长度），最后对其他裂缝参数进行优化的压裂水平井井网参数优化方法。结合我国低渗透油藏实际，以采出程度为目标对线性水驱压裂水平井井网单元进行了裂缝参数与井网参数优化研究，并得出了一系列优化结论。，

Aiming at the problem encountered in the optimization process of fractures and well patterns of fractured horizontal wells, this paper analyzes the main factors that affect the development effectiveness of well patterns of fractured horizontal wells from both macroscopic and microscopic respects and proposes the optimization method of well pattern parameters for fractured horizontal wells by optimizing the array-spacing of well patterns and the fracture half-length firstly, the well spacing of well patterns and the fracture interval （ the length of horizontal well） secondly, and other fracture parameters finally. Combined with the actual situation of low-permeability reservoirs in our country, the parameters for well pattern unit of fi＇actured horizontal wells in a liner water-flooding well pattern are optimized taking aim at recovery percentage of reserves, and a series of optimization conclusions are drawn.