中文摘要：

基于致密油藏储层特征和体积压裂微地震监测资料，通过水电模拟实验研究了不同井型的渗流场特征，利用油藏数值模拟方法从井间压力梯度分布、单井产能及采出程度等方面对不同井型的开发效果进行了评价，论证了体积压裂水平井开发致密油藏的可行性，并首次分析了压裂改造体积大小和储层综合改造因子对体积压裂水平井产能的影响，在此基础上开展了合理井网形式优选。研究表明：体积压裂可以大幅度减小近井区域渗流阻力，体积压裂水平井产能明显高于水平井及常规压裂水平井，动用范围大、采出程度高；水平井井网油水井间驱替压力梯度大，开发效果优于直井一水平井联合井网，但含水上升相对较快；储层压裂改造体积大小和储层综合改造因子与体积压裂水平井产能呈正相关关系，储层压裂改造体积越大，储层综合改造因子越大，产能越高。

英文摘要：

Based on the characteristics of the tight oil reservoirs and micro-seismic monitoring data of the volumet- ric fracturing, the features of the seepage fields for different types of well are studied through the water-electricity simulating experiment. With the help of reservoir numerical simulating method, the development effects of the a- bove wells are evaluated from the viewpoints of inter-well pressure gradient distribution, individual well productivi- ty, recovery percent and so on. And moreover the development feasibility of the volumetric fracturing of the horizon- tal well in the tight oil reservoirs is discussed and demonstrated. At the same time, the influences of the size of the stimulated volume and comprehensive simulating factor on the well productivity are first analyzed. On the basis of the above, the rational well pattern is optimized. The studies show that the volumetric fracture can greatly reduce the percolating resistance near the wellbore, and moreover comparing with the horizontal and conventional fracturing horizontal wells, the productivity of the volumetric fracturing horizontal is pretty higher, and furthermore the devel- oped scope is more larger and the recovery percent is a bit higher; the flooding pressure gradient between the oil and water wells in the horizontal well pattern is bigger, the development effects are better than those of the mixed well pattern, but the water cut rises relatively quickly; there are positive correlations between the stimulated volume and the comprehensive factor with the productivity of the volumetric fracturing horizontal well i. e. the larger the the stimulated volume is, the bigger the comprehensive factor is, the higher the productivity will be.