压裂缝参数对页岩气藏水平井累产影响分析

Effect of Fracture Parameter in Horizontal Well on the Cumulative Production of Shale Gas Reservoirs

张骞 黄冬梅 李正健 唐慧敏 唐宇

ZHANG Qian HUANG Dongmei LI Zhengjian TANG Huimin TANG Yu

中国石油杭州地质研究院, 浙江杭州 310023

The Institute of Zhanjiang Branch of CNOOC, Zhanjiang 524057, China

我国页岩气藏开发还处于起步阶段，开展页岩气藏压裂水平井产量影响因素分析对于页岩气藏的高效开发具有重要的指导意义。此文根据涪陵页岩气区的地质油藏资料，用页岩气双孔双渗模型分析了压裂缝导流能力、压裂缝间距、压裂缝长度、压裂缝高度等参数对水平井累积产量的影响，并用偏相关方法进行影响因素大小分析，影响因素从大到小依次为压裂缝长度、压裂缝间距、压裂缝导流能力、压裂缝高度，最后提出“多分段，造长缝”的压裂原则。

The development of shale gas reservoirs is still in the early stage in China.The analysis of the effect of fracture parameter in the horizontal well on the production of shale gas reservoirs will be of guiding significance to the highly efficient development of shale gas reservoirs.Based on the geology and reservoir data from Fuling gas field,the authors analyzed the effect of some fracture parameters such as fracture conductivity,fracture spacing,fracture length,fracture height etc.on the cumulative production of horizontal wells by using the dual porosity and dual permeability model.The partial correlation analysis of these parameters shows that the influence can be ordered from large to small as fracture length,fracture spacing,fracture conductivity and fracture height.In conclusion,the authors put forward the fracturing principle of “multi stages,long fracture length”.

https://doi.org/10.3969/j.issn.1008-2336.2016.02.038