渤中19-6太古界潜山复杂岩性储层矿物组分反演

doi:10.12108/yxyqc.20200411

岩性油气藏 ›› 2020, Vol. 32 ›› Issue (4): 107–114.doi: 10.12108/yxyqc.20200411

渤中19-6太古界潜山复杂岩性储层矿物组分反演

朱博远¹, 张超谟^1,2, 张占松^1,2, 朱林奇¹, 周雪晴¹

1. 长江大学地球物理与石油资源学院, 武汉 430100;
2. 长江大学油气资源与勘探技术教育部重点实验室, 武汉 430100

收稿日期:2019-10-12 修回日期:2019-12-22 出版日期:2020-08-01 发布日期:2020-06-16
第一作者:朱博远(1995-),男,长江大学在读硕士研究生,研究方向为地球物理测井解释。地址:(430100)湖北省武汉市蔡甸区长江大学(武汉)。Email:874425309@qq.com
通信作者: 张超谟(1962-),男,博士,教授,主要从事测井地层评价与油藏描述方面的教学和科研工作。Email:zhang7801@263.net。

Mineral component inversion of complex lithologic reservoirs in Bozhong 19-6 Archean buried hill

ZHU Boyuan¹, ZHANG Chaomo^1,2, ZHANG Zhansong^1,2, ZHU Linqi¹, ZHOU Xueqing¹

1. College of Geophysics and Petroleum Resources, Yangtze University, Wuhan 430100, China;
2. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan 430100, China

Received:2019-10-12 Revised:2019-12-22 Online:2020-08-01 Published:2020-06-16

摘要/Abstract

摘要： 渤中19-6潜山构造带岩性十分复杂，导致孔隙度参数难以直接利用测井曲线准确计算。综合运用测井和实验岩心资料，从蚀变作用、测井响应特征、孔隙度、矿物含量及裂缝分布方面分析了太古界潜山储层的岩性；建立重矿物识别模型，利用双指示曲线对重矿物进行识别；建立了一套适用于渤中19-6太古界潜山复杂岩性储层矿物组分反演模型。结果表明：研究区变质岩、火成岩及其他岩石岩性复杂，使岩石骨架用测井曲线难以准确计算；重矿物在潜山地层中的质量分数约为8%，常见黄铁矿、菱铁矿和铁白云石，双指示曲线应用在反演模型中，提高了反演精度，该反演模型计算的有效孔隙度与岩心吻合较好。利用改进的多矿物组分反演的方法较好地降低了渤中19-6潜山地层由于矿物成分复杂对物性造成的影响，其反演的矿物组分、孔隙度与实验分析基本一致，为该地区勘探开发提供了技术支撑。

关键词: 变质岩, 双指示曲线, 重矿物, 多矿物组分反演, 太古界, 渤中19-6潜山构造带

Abstract: Lithology of Bozhong 19-6 buried hill structural belt is very complicated.As a result,it is difficult to accurately calculate the porosity parameters directly from the log curve. The data of logging and experimental cores were used to analyze the lithology of buried hill reservoirs of Archean from the aspects of alteration, logging response characteristics,porosity,mineral content and fractures. A heavy mineral identification model was established and double indicator curves were used to identify heavy minerals. A set of mineral composition inversion models suitable for the complex lithologic reservoirs of buried hills of Archean in Bozhong19-6 was established. The results show that the metamorphic rocks,igneous rocks,and other rocks in the study area are complex in lithology,making it difficult to calculate accurate log curves for rock skeletons. The mass fraction of heavy minerals in buried hill formations is about 8%, and pyrite,siderite and iron dolomite are common. The effective porosity calculated by this inversion model agrees well with the core. The improved multi-mineral component inversion method can reduce the impact of complex mineral component on the physical properties of Bozhong 19-6 buried hill formation. The inversion mineral component and porosity are basically consistent with the experimental analysis. This study can provide some technical support for exploration and development in the area.

Key words: metamorphic rock, double indicator curves, heavy minerals, multi-mineral component inversion, Archean, Bozhong19-6 buried hill structural belt

中图分类号:

P618.13

朱博远, 张超谟, 张占松, 朱林奇, 周雪晴. 渤中19-6太古界潜山复杂岩性储层矿物组分反演[J]. 岩性油气藏, 2020, 32(4): 107–114.

ZHU Boyuan, ZHANG Chaomo, ZHANG Zhansong, ZHU Linqi, ZHOU Xueqing. Mineral component inversion of complex lithologic reservoirs in Bozhong 19-6 Archean buried hill[J]. Lithologic Reservoirs, 2020, 32(4): 107–114.

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渤中19-6太古界潜山复杂岩性储层矿物组分反演

Mineral component inversion of complex lithologic reservoirs in Bozhong 19-6 Archean buried hill

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