石油化工高等学校学报2017，Vol.30Issue(2)：44-49,6.DOI:10.3969/j.issn.1006-396X.2017.02.009
低渗气藏水平井分段压裂间距优化设计方法
The Optimal Design Method of Stage Interval for Horizontal Well Fracturing in Low-Permeability Gas Reservoirs
摘要
Abstract
Staged fracturing of horizontal wells is an essential development technology for low-permeability gas reservoirs, and the stage interval will affect fracturing treatment and production rate greatly.Different from the previous reservoir simulation method, the optimal design method in this paper is based on the production of frac-tured vertical well and experience to determine the stage spacing, and considers both production and stress distur-bance.As a prerequisite, the productivity of horizontal well should be equal to the open well's at the least, at the meaning while, assuming that gas flows linearly from formation into fractures, and enters the wellbore radially, the calculation equation is derived to determine the max stage interval.The minimum stage interval can be calculated by stress disturbance theory around fractures.At last, the two calculation methods are combined to define the maximum and minimum scope of stage interval.A computation case shows that the optimal method is optional for on-site rapid fracturing design.关键词
低渗透/油藏/水平井/分段压裂/间距优化Key words
Low permeability/Gas reservoirs/Horizontal well/Staged fracturing/Optimal interval分类
能源科技引用本文复制引用
赵俊..低渗气藏水平井分段压裂间距优化设计方法[J].石油化工高等学校学报,2017,30(2):44-49,6.基金项目
国家级重大专项:临兴-神府地区煤系地层煤层气、致密气、页岩合采示范工程(2016ZX05066). （2016ZX05066）
