大庆石油地质与开发2012，Vol.31Issue(6)：109-113,5.DOI:10.3969/J.ISSN.1000-3754.2012.06.022
压裂水平井增产因素分析与裂缝参数优化
ANALYSIS OF THE PRODUCTION-INCREASING FACTORS AND OPTIMIZATION OF THE FRACTURE PARAMETERS FOR HORIZONTAL WELL FRACTURING
摘要
Abstract
Horizontal well fracturing is an important way to improve the individual well' s productivity in low-permeability oil reservoir, but the fracture length, numbers, the included angles between the fractures and horizontal boreholes and other parameters all affect the fractured horizontal well's productivity. Focused on the pressure field distribution and interference characteristics among fractures of the fractured wells, the stimulating and damaging factors for the productivity are analyzed, the orders and principles of the optimization of fracture parameters of horizontal well fracturing. On the basis of the above, taking the productivity as the target, all the parameters above are studied optimally. The results show that in the course of the reservoir stimulation the much larger scale fracturing should be selected as possible as we can; when the fracture half-length is rather shorter, 5-6 fractures should be adopted to produce; on the contrary ,3-4 fractures should be used; the direction of horizontal well should be considered as far as possible to integrate the strike of the main stress and ensure the included angle between the fractures and the horizontal well not less than 75 ? and furthermore the influences of the fracture distribution should be fully taken into account and the "dumbbell" distribution of fractures is better than the "spindle-type" one.关键词
压裂水平井/裂缝/优化/产能Key words
horizontal well fracturing/ fractures/ optimization/ productivity分类
能源科技引用本文复制引用
安永生,鲁玲,刘姝..压裂水平井增产因素分析与裂缝参数优化[J].大庆石油地质与开发,2012,31(6):109-113,5.基金项目
国家重大专项"复杂结构井优化设计与控制关键技术"(2011ZX05009-005)部分研究成果资助. （2011ZX05009-005）
