页岩储层非均质性分析——以四川长宁地区下志留统龙马溪组为例

发布时间：2018-02-17 05:39

本文关键词： 非均质特征矿物组分龙马溪组页岩储层四川盆地　出处：《断块油气田》2016年02期 　论文类型：期刊论文

【摘要】：页岩储层有别于常规储层,低孔低渗的特性决定了其储层非均质的复杂性。国内针对页岩储层非均质特征评价工作开展的还相对较少,目前没有完善的评价标准。在详细调研国内外储层非均质性研究的基础上,文中分别从平面、层内、微观3个方面对有机质体积分数、成熟度、孔隙度、矿物组分的非均质性特征进行对比研究,并根据研究结果做出相应分析。分析结果表明:四川盆地长宁区块下志留统龙马溪组页岩储层纵、横向上非均质特征均明显,夹层发育,热成熟度高,镜质体反射率(Ro)达3.8%;石英等脆性矿物体积分数高,孔隙、微裂隙发育且配置好,页岩储层物性好,勘探开发潜力大。
[Abstract]:Shale reservoir is different from conventional reservoir. The characteristics of low porosity and low permeability determine the complexity of reservoir heterogeneity. At present, there is no perfect evaluation standard. On the basis of detailed investigation of reservoir heterogeneity both at home and abroad, the volume fraction, maturity, porosity of organic matter in plane, layer and micro are respectively studied in this paper. The heterogeneity characteristics of mineral components are compared and analyzed according to the results. The results show that the shale reservoirs of Lower Silurian Longmaxi formation in Changning block, Sichuan Basin, have obvious heterogeneity in both vertical and lateral. Intercalation is developed, thermal maturity is high, vitrinite reflectance is up to 3.8.The volume fraction of brittle minerals such as quartz is high, pores and microfractures are developed and well configured, shale reservoir physical properties are good, exploration and development potential is great.
【作者单位】：长江大学地球科学学院;长江大学油气资源与勘查技术教育部重点实验室;
【基金】：国家自然科学基金项目“页岩油、气甜点地质构成要素研究”(41472123)
【分类号】：P618.13

【相似文献】