页岩气有效储层三维地质建模
——以威远地区威202H2平台区为例

3D geological modeling of effective shale-gas reservoirs: taking Wei 202H2 platform
of Weiyuan Area as an example

 马成龙¹ 张新新² 李少龙³

中国石油辽河油田分公司勘探开发研究院，辽宁 盘锦 124010 中国石油长城钻探工程公司录井公司，辽宁 盘锦 124010 中国石油长城钻探工程公司四川页岩气项目部，辽宁 盘锦 124010）

Research Institute of Exploration and Development, Liaohe Oilfield Company, PetroChina, Panjin 124010, China Logging Service Company, Great Wall Drilling Company Ltd., CNPC, Panjin 124010, China Sichuan Shale-gas Project Department, Greatwall Drilling Company, CNPC, Panjin 124010, China)

 国内页岩气资源开发正处于起步发展阶段，实际开发中缺少有效的技术指导，尤其是三维地质建模技术方面。在综合钻测井、地震及分析测试资料的基础上，提出了一套页岩气有效储层三维地质建模技术。通过井震约束，建立有效储层段的构造模型，以GR（自然伽马测井值）、TOC（总有机碳质量分数）、Si质量分数、Ca质量分数与沉积微相的对应关系构建沉积小层相的划分标准；应用序贯指示和序贯高斯模拟方法分别建立起相模型和各重要参数的属性模型；最后通过单位体积含气量累计求和的方法计算页岩气藏地质储量。实例应用表明，构建的三维地质模型有效刻画出了有效储层空间的非均质性变化特征，并指出了各属性参数对应的有利分布区域。该类页岩气藏模型的构建方法和实际应用，对类似气藏的开发部署具有指导意义。

 Domestic shale gas resources development is in the initial stage of development, and a series of matching technologies for the actual development level, especially the 3D geological modeling technology, needs to be enriched and perfected. Based on comprehensive geology, logging and seismic data, a 3D geological model of effective shale-gas reservoir was built, taking Wei 202H2 platform of Weiyuan Area as an example. The structural model of effective reservoir was established by comprehensive constrain of logging and seismic data. The classification standard of sedimentary facies was constructed by the correspondence of GR, TOC, contents of Si and Ca. The sequential indicator method and the sequential Gaussian simulation method were used to establish the facies model and the important attribute parameter model respectively. Finally, the calculation method of shale gas reservoir reserves was carried out by the method of cumulative sum of gas volume per unit volume. The 3D geological model effectively depicts the non-homogeneous characteristics of effective reservoir in space, and points out the favorable distribution area of each attribute parameter. The construction method and practical application of the shale gas model provide important practical guidance to the next step development of shale-gas.

10.6056/dkyqt201704013