页岩气层有效厚度下限探讨
——以涪陵页岩气田五峰组—龙马溪组为例

Lower limit of effective thickness of shale gas: a case from Wufeng and Longmaxi Formations in Fuling shale gas field

 高红贤 王雪玲 严伟 王建波

 （中国石化勘探分公司，四川 成都 610041）

 (SINOPEC Exploration Company, Chengdu 610041, China)

 储层有效厚度是储量计算的重要参数之一，国内对页岩气储层有效厚度下限标准的研究尚处于探索完善阶段，为了评价国内首个页岩气田的探明储量，有必要深入研究页岩的有效厚度下限。文中以涪陵页岩气田五峰组—龙马溪组页岩气藏为例，首先对商业开发的页岩储层厚度开展研究，然后通过分析页岩气储层岩性、脆性矿物体积分数、总含气量、有机碳质量分数、镜质体反射率等，优选出适合研究区的页岩气层有效厚度下限表征参数，最后提出适合研究区储层特征的有效储层下限标准。该标准在四川盆地涪陵页岩气田页岩气储量计算中取得较好的应用效果。

 Effective reservoir thickness is an important parameter in reserves calculation. The research on the minimum net pay thickness of shale gas reservoir is still at the starting stage in China. It is necessary to deeply study minimum net pay thickness of shale gas reservoirs in order to estimate the reserves of Fuling shale gas field. Taking Fuling shale gas field for example, this paper firstly studies shale reservoir thickness in shale gas field which has been commercially developed. Secondly, by analyzing parameters such as reservoir lithology, brittle mineral content, total gas content, total organic carbon content, and vitrinite reflectance, etc., representational parameters of the minimum net pay thickness suitable for research field are optimized. Finally, the standards of minimum net pay thickness of shale gas reservoir are established. This standard has good application results in reserves calculation of the Fuling shale gas field in Sichuan Basin.

10.6056/dkyqt201604006