塔里木盆地哈拉哈塘地区碳酸盐岩缝洞型储层量化雕刻技术

摘要/Abstract

摘要： 塔里木盆地哈拉哈塘地区碳酸盐岩埋藏最深已超过7200m，储层非均质性强，缝洞体识别预测与定量评价难度大，是油气勘探开发面临的主要难题。通过井震结合建立了串珠地震相、片状地震相、杂乱地震相及相应的几何空间结构模型，在测井电相储层类型及地震波阻抗约束下得到储层孔隙度模型，最终完成缝洞空间量化雕刻、缝洞连通性预测及缝洞体空间描述。该技术实现了缝洞体由原来的属性体轮廓刻画向量化雕刻的转变，能够比较准确预测碳酸盐岩非均质储层的发育特征，储层预测精度明显提高，放空漏失率由原来的42%提高到52.8%，储层钻遇率由原来的82%提高到91%，有效推动了勘探开发生产工作。

关键词: 塔里木盆地, 哈拉哈塘地区, 超深碳酸盐岩, 地质建模, 缝洞量化雕刻

Abstract: In Halahatang area of the Tarim Basin, the carbonate reservoirs, with maximum burial depth of over 7200 meters, are characterized by strong heterogeneity. Accordingly, it is difficult to identify and evaluate quantitatively the fractures and cavities. In this regard, a quantitative description technology for fracture-cavity carbonate reservoirs is adopted. Based on well-seismic data, beaded, flaky and chaotic seismic facies are established and their corresponding geometric structure models are built. Then, reservoir porosity model is built up with the constraint of well logging electrofacies reservoir model and seismic wave impedance. Finally, fracture-cavity space quantitative description, connectivity prediction and space description are completed. In virtue of this technology, fracture-cavity is described by quantification instead of the original attribute properties, so that prediction accuracy of heterogeneous carbonate reservoirs is obviously improved. The void leakage rate increases to 52.8% from 42%, and reservoir encountering rate increases to 91% from 82%. Obviously, this technology promotes effectively the exploration, development and production.

李国会, 袁敬一, 罗浩渝, 杨鹏飞, 李　阳. 塔里木盆地哈拉哈塘地区碳酸盐岩缝洞型储层量化雕刻技术[J]. 中国石油勘探, 2015, 20(4): 24-29.

Li Guohui, Yuan Jingyi, Luo Haoyu, Yang Pengfei, Li Yang. Quantitative Description Technology for Fracture-Cavity Carbonate Reservoirs in Halahatang Area, Tarim Basin[J]. China Petroleum Exploration, 2015, 20(4): 24-29.

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