Title

Well Test Theory and Productivity Evaluation of Multilevel Fractured Horizontal Wells

作者

李月纪大伟王杰

Authors

Li Yue Ji Dawei Wang Jie

单位

（东北石油大学石油工程学院，黑龙江大庆 163318）

Organization

In order to realize the efficient development of the oilfield,it is needed to evaluate the productivity of the reservoir. According to the structure of horizontal well, the form of fracture and the distance of fracture, combined with the theory of seepage mechanics, a well test analysis model for multistage fractured horizontal wells considering wellbore storage and skin factor is established. A typical curve fitting chart of pressure and derivative is obtained, and a well testing interpretation software system based on the theoretical plate is developed. Based on the well test interpretation software system compiled by the theoretical plate, the IPR curve and the production decline curve are plotted by using multistage fracturing horizontal well test interpretation software.The results show that under the same production conditions, the influence of fracture distance and crack skin factor on productivity is less than the effect of crack half length on productivity. According to the curve of production flow rate with bottomhole flow at different production stages and the curve of output with production time at different bottomhole flow pressures, and the production capacity is predicted and evaluated at different stages of fracturing horizontal wells. It provides a strong guarantee for the efficient development of multistage fracturing horizontal wells.

摘要

关键词: 水平井, 裂缝, 试井, 产能评价, IPR曲线, 产量递减曲线

关键词：

水平井; 裂缝; 试井; 产能评价; IPR曲线; 产量递减曲线;

基金项目

国家自然科学基金面上项目（51574085）

DOI

10.3969/j.issn.1006-396X.2018.05.006

多级压裂水平井试井理论及产能评价