摘要
页岩气储层矿物类型多样,常规的测井解释方法难以建立储层参数体积模型。最优化测井可以有效地评价多矿物组成的复杂岩性油气藏,但该方法的关键是优化算法的选择。利用最新提出的海鸥优化算法对四川盆地渝西区块H井区页岩气储层进行了矿物、物性参数等最优化测井解释,并与遗传算法和遗传—复合形混合算法进行了对比。结果显示,海鸥优化算法的最优化测井解释与岩心分析资料吻合较高、误差小、计算速度较快,弥补了遗传算法过早收敛、容易陷入局部最优以及遗传—复合形混合算法需要二次优化、搜索速度较慢等不足。这为海鸥优化算法在其他地区页岩气储层评价中的应用提供了借鉴。
Due to the diversity of mineral types in shale gas reservoirs,it is difficult to establish reservoir parameter volume model by conventional log interpretation methods. The optimization log interpretation method can evaluate complex lithology reservoirs effectively,and the key is optimization algorithm. With the newly proposed seagull optimization algorithm method,we calculate the mineral and physical parameters of shale gas reservoir in Well H of Yuxi block,Sichuan Basin,and compare with the genetic algorithm and the genetic algorithm-complex hybrid algorithm. It shows that calculation results of seagull optimization algorithm optimization log interpretation match well with core analysis data,and calculation error is small,calculation speed is fast. Seagull optimization algorithm also makes up for the shortcomings of premature convergence and easy to fall into local optimization of genetic algorithm,the need for secondary optimization and slow search speed of genetic-complex hybrid algorithm. It provides a reference for the application of seagull optimization algorithm in other shale gas reservoirs regions.
作者
陈愿愿
杨晓
邓小江
王小兰
何奇
程莉莉
陈科贵
Chen Yuanyuan;Yang Xiao;Deng Xiaojiang;Wang Xiaolan;He Qi;Cheng Lili;Chen Kegui(Southwest Geophysical Research Institute of BGP CNPC,Chengdu 610213,China;School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China)
出处
《地球科学进展》
CAS
CSCD
北大核心
2020年第7期761-768,共8页
Advances in Earth Science
基金
国家自然科学基金项目“四川盆地油钾兼探的地球物理评价方法研究”(编号:41372103)
四川省科技计划项目“四川盆地深层钾盐勘探开发评价研究”(编号:2019YJ0312)资助
关键词
页岩气
最优化测井解释
海鸥优化算法
搜索能力
岩心资料
Shale gas
Optimization log interpretation
Seagull optimization algorithm
Search ability
Core data
