深层海相碳酸盐岩储层非均质性研究进展
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尚墨翰(1993—),男,山东蒙阴人,博士,从事油气田开发地质方面的研究。E-mail:shangmohan126@126.com。

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国家“ 万人计划”科学家工作室,中国科学院战略性先导科技专项( A类)子课题“ 深层碳酸盐岩油气储层地质建模”(XDA14010204),中国石化科技部项目“礁滩相高含硫气藏储层精细表征及剩余气分布规律研究”(P20077kxjgz)。


Research progress on heterogeneity of deep marine carbonate reservoirs
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    摘要:

    近年来,中国在深层海相碳酸盐岩油气领域取得了丰硕的勘探开发成果,但随着部分深层油气藏逐渐进入开发中后期,强烈的储层非均质性对开发效果的影响逐渐显现,亟需对储层非均质性开展研究,以指导油气藏的调整挖潜。深层海相碳酸盐岩储层中孔、缝、洞等多重介质普遍发育,其形成演化受多期次、多种地质因素作用综合控制,具有耦合发育的特点,使储层呈现出多尺度的强非均质性特征。目前,针对深层海相碳酸盐岩储层非均质性的研究尚处于起步阶段,参考碎屑岩储层非均质性相关理论和研究方法开展碳酸盐岩储层非均质性研究存在针对性和适用性不足的问题。如碎屑岩储层非均质性的层次分类方案并不完全适用于深层海相碳酸盐岩储层,至今还没有建立一套公认的适用于碳酸盐岩储层的非均质性层次分类方案。深层海相碳酸盐岩储层非均质性更加复杂,缺乏对不同介质耦合发育下多尺度非均质性形成机制和分布规律的系统认识。此外,利用传统方法开展深层海相碳酸盐岩储层非均质性空间分布预测和表征精度仍难于满足实际生产需要。下一步研究方向包括:一是开展多重介质系统耦合控制下的多尺度非均质性形成机理研究,建立多尺度非均质性发育模式;二是建立具有适用性的深层海相碳酸盐岩层次(类型)划分方案,结合新技术手段不断提高多尺度非均质性空间分布预测及表征精度;三是开展多尺度非均质性渗流机理研究,阐明非均质性对开发的影响。

    Abstract:

    In recent years,China has made continuous breakthroughs in the field of deep marine carbonate petroleum reservoirs and reaped substantial achievements in exploration and development. However,the influence of strong reservoir heterogeneity on development effect appeared gradually as some deep reservoirs entered into the middle or final stage of the development. It is urgent to research reservoir heterogeneity to guide the adjustment and potential tapping of oil and gas reservoirs. Multiple media such as pores,fractures,and caves are widely developed in deep marine carbonate reservoirs. Their formation and evolution are controlled by multiple stages and geological factors and present coupling development,which brings strong multi-scale heterogeneous reservoirs. At the moment,the research on the heterogeneity of deep marine car? bonate reservoirs is still in its infancy. There are poor pertinence and applicability in the research on the heterogeneity of carbonate reservoirs,which refers to the relevant theories and research methods of clastic reservoir heterogeneity. For example,the hierarchical classification scheme of clastic reservoir heterogeneity is not completely suitable for deep marine carbonate reservoirs,and a recognized hierarchical classification scheme for carbonate reservoir heterogeneity has not been established so far. The heterogeneity of deep marine carbonate reservoirs is more complex,and there is a lack of systematic understanding of the formation mechanism and distribution law of multi-scale heterogeneity under the coupling development of different media. In addition,based on traditional methods,the prediction and characterization accuracy for the spatial distribution of deep carbonate reservoir heterogeneity is still difficult to meet the actual production needs. Therefore,this paper proposes the following three research directions:study the formation mechanism of multi-scale heterogeneity under the coupling control of a multi-media system and build the development model of multi-scale heterogeneity;establish an applicable classification scheme of deep marine carbonate strata(types)and continuously improve the prediction and characterization accuracy for the spatial distribution of multi-scale heterogeneity with new technical means;and investigate the mechanism of multi-scale heterogeneous seepage and clarify the influence of heterogeneity on development.

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尚墨翰,赵向原,曾大乾,游瑜春.深层海相碳酸盐岩储层非均质性研究进展[J].油气地质与采收率,2021,28(5):32~49

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  • 在线发布日期: 2021-12-20