富有机质页岩的岩石力学性质及其影响因素研究进展

doi:10.3969/j.issn.1672-9803.2023.04.017

录井工程 ›› 2023, Vol. 34 ›› Issue (4): 104-111.doi: 10.3969/j.issn.1672-9803.2023.04.017

富有机质页岩的岩石力学性质及其影响因素研究进展

张瑶珈^①,②, 陈志鹏^①,②, 于春勇^③, 董峰^④, 屈凯旋^⑤, 施宝海^③

①西安石油大学地球科学与工程学院;
②西安石油大学陕西省油气成藏地质学重点实验室;
③中国石油渤海钻探第一录井公司;
④中国石油渤海钻探第二录井公司;
⑤中国石油渤海钻探油气合作开发分公司

收稿日期:2023-10-07 出版日期:2023-12-25 发布日期:2024-01-04
通讯作者: 陈志鹏1987年生.西安石油大学地球科学与工程学院讲师,,主要从事碎屑岩和碳酸盐岩的沉积、成岩与油气成藏评价研究。通信地址:710065陕西省西安市雁塔区电子二路东段18号。电话:18658895629。E-mail: chenzhipeng305@163.com
作者简介:张瑶珈2001年生,西安石油大学地球科学与工程学院硕士研究生在读,主要从事沉积学及油气地质方面的研究。电话:137205076O7。通信地址:710065陕西省西安市雁塔区电子二路东段18号。E-mail: zhangyaojiami@163.com
基金资助:
陕西省自然科学基础研究计划“咸化湖盆中不同性质热流体作用下有机质差异富集的成因机理"(编号:20.1.1Q-592); 陕西省教育厅专项科研计划“热年代学约束下哈日凹陷中新生代构造热演化研究”(编号:21JK0840)

Geomechanical properties and influencing factors of organic-rich shale

ZHANG Yaojia^①,②, CHEN Zhipeng^①,②, YU Chunyong^③, DONG Feng^④, QU Kaixuan^⑤, SHI Baohai^③

①School of Earth Science and Engineering,Xi'an Shiyou University, Xi′an, Shaanxi 710065,China;;
②Key Laboratory of Shaanxi Province for Oil and Gas Accumulation Geology, Xi'an Shiyou University, Xi′an, Shaanxi 710065,China;;
③No.1 Mud Logging Company, BHDC,CNPC,Tianjin 300280,China;
④No.2 Mud Logging Company, BHDC,CNPC, Renqiu, Hebei 062552,China;
⑤Oil & Gas Corporation and Development Company, BHDC, CNPC, Tianjin 300457,China;

Received:2023-10-07 Online:2023-12-25 Published:2024-01-04

摘要/Abstract

摘要： 岩石力学性质是井筒稳定性评价和水力压裂设计的重要参数,富有机质页岩的岩石力学性质及其影响因素一直是页岩油气领域关注的焦点。岩石力学性质的表征方法多种多样且适应性各不相同,加之复杂的地质条件对页岩岩石力学性质存在不同程度的影响,因此正确评价页岩的岩石力学性质具有重要意义。在简述富有机质页岩力学评价中常用参数及其含义的基础上,综述了页岩岩石力学性质的主要影响因素,并讨论了不同影响因素的适用性和局限性,结果表明：（1）弹性、强度和脆性是页岩岩石力学评价的重要参数,不同应用场合对评价参数各有侧重;（2）富有机质页岩的岩石力学性质受岩石内在因素以及原位埋藏环境的影响,尤以受矿物组分、有机质、含水率、围压、温度、层理、天然裂缝、各向异性的影响最为显著,在优选页岩油气开发甜点时应首先明确影响岩石力学性质的主控因素。最后对岩石力学性质在富有机质页岩开发中的应用及未来发展进行了展望,认为解决页岩的力学问题是推动4 000 m以深页岩油气开发的关键,开展基于岩石力学性质的页岩分类研究有助于统一评价标准,数值模拟和机器学习等技术将为富有机质页岩的岩石力学性质表征发挥更重要的作用。

关键词: 页岩, 富有机质, 页岩油气, 水力压裂, 岩石力学, 矿物组分

Abstract: Geomechanical properties play a crucial role in both evaluating wellbore stability and stimulating hydraulic fracturing. The geomechanical properties of organic-rich shale and its influencing factors have always been a central focus in the field of shale oil and gas. There are multiple ways to characterize the properties of rocks with different indications. Furthermore, the complex geological conditions significantly influence the geomechanical properties of shale. Therefore, correctly evaluating the geomechanical properties of shale is of great practical significance. This paper reviews the main influencing factors of shale mechanical properties, and discusses the applicability and limitations of different influencing factors on the basis of briefly describing the common parameters and their indications in the geomechanical evaluation of organic-rich shale. The results indicate that：（1） Elasticity, strength, and brittleness are important parameters for the geomechanical evaluation of shale, and different evaluation parameters are applicable to different scenarios. （2） The geomechanical properties of organic-rich shale are affected by both internal factors of the rock and the in-situ burial environment. Among these factors, mineral components, organic matter abundance, water content, confining pressure, temperature, bedding, natural fractures, and anisotropy are the most significant. It is essential to identify the main controlling factors affecting geomechanical properties to select sweet spots for shale oil and gas development. （3） In terms of application and future development, solving the mechanical problems of shale is the key to promote the development of shale deeper than 4000 meters. Conducting shale classification research based on geomechanical properties will help unify the evaluation standards. Numerical simulation and machine learning will play increasingly important roles in characterizing the geomechanical properties of organic-rich shale.

Key words: shale, organic-rich, shale oil and gas development, hydraulic fracturing, rock mechanics, mineral components

中图分类号:

TE132.1

张瑶珈, 陈志鹏, 于春勇, 董峰, 屈凯旋, 施宝海. 富有机质页岩的岩石力学性质及其影响因素研究进展[J]. 录井工程, 2023, 34(4): 104-111.

ZHANG Yaojia, CHEN Zhipeng, YU Chunyong, DONG Feng, QU Kaixuan, SHI Baohai. Geomechanical properties and influencing factors of organic-rich shale[J]. Mud Logging Engineering, 2023, 34(4): 104-111.

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富有机质页岩的岩石力学性质及其影响因素研究进展

Geomechanical properties and influencing factors of organic-rich shale

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