Dominating factors on well productivity and development strategies optimization in Weiyuan shale gas play, Sichuan Basin, SW China

MA Xinhua,LI Xizhe,LIANG Feng,WAN Yujin,SHI Qiang,WANG Yonghui,ZHANG Xiaowei,CHE Mingguang,GUO Wei,GUO Wei

Table 1 Geostress parameter statistics of typical well Wufeng- Longyi 1 sub section in Weiyuan.

Well Maximum horizontal principal stress/MPa Minimum horizontal principal stress/MPa Horizontal stress difference/MPa W202 70.0 54.0 16.0 W204 88.3 69.6 18.7 Z201 84.0 76.3 7.7