摘要
为进一步提高页岩气水平井分段压裂的有效性,对水平井综合分段布缝及射孔分簇方法进行了优化。基于数值模拟和压裂模拟,兼顾实际裂缝形态和多裂缝参数的彼此影响,提出了分段参数优化正交设计方法;在确定分段数的基础上,从产能最大化角度提出了"W"型分段压裂布缝模式;根据多簇裂缝之间应力干扰及诱导应力分布特征,建立了较为合理的分簇优化方法;考虑页岩气水平井实际穿行轨迹的地质属性和工程特征,形成了地质分大段、工程分小段的分段分簇综合优化设计方法。
To further improve the effectiveness of staged fracturing design for shale gas horizontal well, a comprehensive fracturing stageand cluster optimization method was studied. Based on the results of numerical simulation and fracturing simulation, considering the effectof actual fracture geometry and multi-fracture parameters, this paper presents an orthogonal design method for sectional parameters optimi-zation; after that, it proposes a W-type staged fracturing model for obtaining maximum productivity; according to multiple cluster-fracturestress interference and induced stress distribution, it establishes a more reasonable clustering optimization method; considering the geolog-ic attributes and engineering features in real trajectory of shale gas horizontal well, it provides a comprehensive optimization method of frac-turing stage and cluster in terms of geologic long segment and engineering short segment.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2016年第2期218-221,共4页
Xinjiang Petroleum Geology
基金
中国石化科技攻关项目(P14091)
关键词
页岩气
水平井
压裂
分段
分簇
优化
shale gas
horizontal well
fracturing
stage division
cluster division
optimization
