Assessing shale gas resources of Wufeng-Longmaxi shale (O-3w-S-1l) in Jiaoshiba area, SE Sichuan (China) using Petromod I: Burial and thermal histories
Assessing shale gas resources of Wufeng-Longmaxi shale (O-3w-S-1l) in Jiaoshiba area, SE Sichuan (China) using Petromod I: Burial and thermal histories
复制标题
使用 Petromod I 评估四川东南部焦石坝地区五峰-龙马溪页岩 (O-3w-S-1l) 的页岩气资源：埋藏史和热史
DOI：
10.1080/10916466.2016.1176041
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发表时间：
2016
影响因子：
1.5
通讯作者：
Wang Yunpeng
中科院分区：
文献类型：
--
作者：
Yao Xiulian;Wang Yunpeng
利用PetroMod软件对川东南重要页岩气勘探靶区焦石坝五峰组—龙马溪组（O3w-S1l）页岩埋藏史和热演化史进行了模拟。JY4井研究结果表明，页岩在志留纪埋藏至2000 m，后期因侵蚀作用抬升1000 m，在二叠纪再次下沉，在白垩纪末重新埋藏至6200 m左右的最大深度（K3）。最后，页岩抬升至目前深度2500 m。在实测约束下，根据埋藏演化重建页岩热史。晚志留世页岩进入油窗，早三叠世页岩过生气高峰。自三叠纪以来，热成熟速度明显加快，并在K3达到最大成熟（2.0 ~ 2.5% Ro）。
Burial and thermal histories of Wufeng-Longmaxi shale (O3w-S1l) in Jiaoshiba, an important shale gas exploration target in SE Sichuan, were modeled using PetroMod software. Results of Well JY4 show the shale was buried to 2000 m in Silurian, uplifted 1000 m due to a later erosion, subsided again at Permian, and reburied to maximum depth around 6200 m at the end of Cretaceous (K3). Finally, the shale uplifted to the current depth of 2500 m. Thermal history of the shale was reconstructed based on the burial evolution after constrained by measurements. The shale entered oil-window in later Silurian and passed gas generation peak at early Triassic. Thermal maturation accelerated significantly since the Triassic and finalized its maximum maturation (2.0–2.5% Ro) at K3.