直井短宽缝压裂产能计算

Fracturing productivity calculation of vertical well with short and wide fractures

刘晓强 郭天魁 李小龙 周丽萍 许华儒 李建雄

中国石油大学（华东）石油工程学院，山东 青岛 266580

College of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China

三次加密井压裂改造采用直井短宽缝压裂技术，可以取得较理想的经济效益。文中为了准确预测油藏压裂后的产能，基于水电模拟实验和渗流理论，建立了低渗透油藏压裂后形成垂直短宽缝的渗流模型，并推导了垂直短宽缝的压裂产能公式；开展了水电模拟实验，分析了裂缝长度、渗透率、流体黏度对产能的影响。实验结果表明，该产能公式具有较高的准确性，对实际生产具有一定的指导意义。

In the process of fracturing for tertiary infill wells, the technology of vertical wells with short and wide fractures is used to obtain the ideal economic efficiency. In order to predict the reservoir productivity after fracturing, the percolation model of vertical wells with short and wide fractures is established and the productivity formula is deduced based on electrical simulation experiment and percolation theory. The influence of fracture length, permeability and fluid viscosity on productivity is analyzed by electrical simulation experiment. The results show that this productivity formula has high accuracy, which has certain guiding signification for field production.

10.6056/dkyqt201502018