Lithofacies distribution characteristics and main development controlling factors of shale in Wufeng Formation-Member 1 of Longmaxi Formation in Jiaoshiba area

doi:10.7623/syxb201806003

Acta Petrolei Sinica ›› 2018, Vol. 39 ›› Issue (6): 631-644.DOI: 10.7623/syxb201806003

• Petroleum Exploration • Previous Articles Next Articles

Lithofacies distribution characteristics and main development controlling factors of shale in Wufeng Formation-Member 1 of Longmaxi Formation in Jiaoshiba area

Wang Chao¹, Zhang Baiqiao¹, Lu Yongchao², Shu Zhiguo¹, Lu Yaqiu¹, Bao Hanyong¹, Meng Zhiyong¹, Chen Lei³

1. Exploration and Development Research Institute, Sinopec Jianghan Oilfield Company, Hubei Wuhan 430223, China;
2. College of Marine Science and Technology, China University of Geosciences, Hubei Wuhan 430074, China;
3. School of Geoscience and Technology, Southwest Petroleum University, Sichuan Chengdu 610500, China

Received:2017-07-31 Revised:2018-03-20 Online:2018-06-25 Published:2018-07-03

焦石坝地区五峰组—龙马溪组一段页岩岩相展布特征及发育主控因素

王超¹, 张柏桥¹, 陆永潮², 舒志国¹, 陆亚秋¹, 包汉勇¹, 孟志勇¹, 陈雷³

1. 中国石油化工股份有限公司江汉油田分公司勘探开发研究院湖北武汉 430223;
2. 中国地质大学海洋学院湖北武汉 430074;
3. 西南石油大学地球科学与技术学院四川成都 610500

通讯作者: 王超,男,1987年1月生,2015年获中国地质大学(武汉)矿产普查与勘探专业博士学位,现为中国石油化工股份有限公司江汉油田分公司博士后,主要从事非常规油气资源评价及储层地球物理精细表征研究。Email:wangchao0502@163.com
作者简介:王超,男,1987年1月生,2015年获中国地质大学(武汉)矿产普查与勘探专业博士学位,现为中国石油化工股份有限公司江汉油田分公司博士后,主要从事非常规油气资源评价及储层地球物理精细表征研究。Email:wangchao0502@163.com
基金资助:
国家科技重大专项"涪陵页岩气开发示范工程"（2016ZX05060），国家自然科学基金青年科学基金项目（No.41602147，No.41702149）和中国博士后科学基金面上项目（2017M622559）资助。

Abstract

Abstract:

The study of shale lithofacies distribution and the main development controlling factor is essential for the geological evaluation of shale gas exploration and development. Based on the comprehensive analyses of cores, thin sections, cathode luminescence, whole-rock X-ray diffraction, ECS logging, major/trace element and other data, the three-end-member method and shale lithofacies classification nomenclature are applied to identify the three major classifications and eight sub-type shale lithofacies in the shale of Wufeng Formation-Member 1 of Longmaxi Formation, Jiaoshiba area, and reveal the spatiotemporal distribution laws and main development controlling factors of shale lithofacies. In the study area, the vertical evolution of marine shale has a tripartite feature, and the siliceous shale, mixed shale and argillaceous shale are developed from bottom to top. Besides, the shale lateral distribution is characterized by north-south difference; the shale lithofacies of the north area changes rapidly. The thickness of hybrid shale in the north area is significantly larger than that of the south area, while that of siliceous shale in the south area is relatively thicker. The difference in shale lithofacies is controlled by special sedimentary geologic events; the development of siliceous shale is controlled by the Ordovician-Silurian global volcanic event in a certain degree, while hybrid shale is affected by the effect of bottom current, and argillaceous shale is mainly influenced by the supply of terrestrial clastic material.

Key words: shale, lithofacies, spatiotemporal distribution, sedimentary environment, main controlling factors, Longmaxi Formation, Jiaoshiba area

摘要：

页岩岩相展布及发育主控因素研究是页岩气勘探开发地质评价的基础性工作。基于岩心、岩石薄片、阴极发光、全岩X射线衍射、ECS元素测井、主量/微量元素等资料，运用岩矿三端元法和页岩岩性分级命名方法，识别出了焦石坝地区五峰组—龙马溪组一段海相页岩发育的3大类、8亚类页岩岩相，并揭示了页岩岩相的时空展布规律及发育主控因素。研究区海相页岩垂向演化具有三分性特征，自下至上依次发育有硅质类页岩、混合类页岩和黏土类页岩；页岩横向展布具有南北差异性特征，北部页岩岩相变化较快，其中混合类页岩发育厚度显著大于南部，而南部硅质类页岩岩相厚度相对较大。页岩岩相差异性特征受控于特殊沉积地质事件，其中硅质类页岩发育在一定程度上受控于奥陶纪—志留纪全球性火山事件，混合类页岩受底流作用影响显著，而黏土类页岩主要受陆源碎屑物质供给作用影响。

关键词: 页岩, 岩相, 时空展布, 沉积环境, 主控因素, 龙马溪组, 焦石坝地区

CLC Number:

TE123

Wang Chao, Zhang Baiqiao, Lu Yongchao, Shu Zhiguo, Lu Yaqiu, Bao Hanyong, Meng Zhiyong, Chen Lei. Lithofacies distribution characteristics and main development controlling factors of shale in Wufeng Formation-Member 1 of Longmaxi Formation in Jiaoshiba area[J]. Acta Petrolei Sinica, 2018, 39(6): 631-644.

王超, 张柏桥, 陆永潮, 舒志国, 陆亚秋, 包汉勇, 孟志勇, 陈雷. 焦石坝地区五峰组—龙马溪组一段页岩岩相展布特征及发育主控因素[J]. 石油学报, 2018, 39(6): 631-644.

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Lithofacies distribution characteristics and main development controlling factors of shale in Wufeng Formation-Member 1 of Longmaxi Formation in Jiaoshiba area

焦石坝地区五峰组—龙马溪组一段页岩岩相展布特征及发育主控因素

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