|本期目录/Table of Contents|

[1]王乔,李虎,刘廷,等.页岩脆性的表征方法及主控因素[J].断块油气田,2020,27(04):458-463.[doi:10.6056/dkyqt202004010]
 WANG Qiao,LI Hu,LIU Ting,et al.Characterization method and main controlling factors of shale brittleness[J].Fault-Block Oil and Gas Field,2020,27(04):458-463.[doi:10.6056/dkyqt202004010]
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《断块油气田》[ISSN:1005-8907/CN:41-1219/TE]

卷:
27
期数:
2020年04
页码:
458-463
栏目:
默认栏目
出版日期:
2020-07-25

文章信息/Info

Title:
Characterization method and main controlling factors of shale brittleness
作者:
王乔1李虎2刘廷2李志刚2董玉洁3蒋炳坤2
1.吉林大学博物馆,吉林 长春 130000;2.中国石油塔里木油田分公司,新疆 库尔勒 841000;3.中国石油新疆油田分公司油气储运公司,新疆 昌吉 831100
Author(s):
WANG Qiao1 LI Hu2 LIU Ting2 LI Zhigang2 DONG Yujie3 JIANG Bingkun2
1.Jilin University Museum, Changchun 130000, China; 2.Tarim Oilfield Company, PetroChina, Korla 841000, China; 3.Oil and Gas Storage and Transportation Branch, Xinjiang Oilfield Company, PetroChina, Changji 831100, China
关键词:
页岩脆性矿物岩石应力 ̄应变关系裂缝地应力岩石力学
Keywords:
shale brittle mineral rock stress-strain relationship fracture in-situ stress rock mechanics
分类号:
-
DOI:
10.6056/dkyqt202004010
文献标志码:
A
摘要:
页岩脆性的表征在工程“甜点”优选以及勘探风险评估等方面具有重要的指导意义,文中对国内外近年来的页岩脆性表征方法和主要控制因素进行了综合分析和探讨。研究表明:页岩脆性评价方法主要基于岩石的应力 ̄应变关系和脆性矿物。脆性主控因素分为内在因素和外在因素,内在因素包括脆性矿物、有机质的成熟度、天然裂缝、层理、孔隙度、吸附作用,外部因素包括埋深以及水平地应力差,这些因素控制着岩石的应力 ̄应变关系,以及强度、能量、弹性模量等力学性质。文中提出未来应开发裂缝演化的动态可视化技术,搭建多种地质因素的数学评价模型,确定脆 ̄延性转换带的埋深界限,采用新型环保的无水压裂介质等建议。
Abstract:
The characterization of shale brittleness is of great significance to the optimization of engineering "sweet spot" and the risk assessment of exploration. In this paper, shale brittleness characterization methods and main control factors in China and abroad in recent years were comprehensively analyzed and discussed. The results show that the evaluation method of shale brittleness is mainly based on the stress-strain relationship of rock and brittle minerals. The main controlling factors of brittleness are internal factors and external factors. The internal factors include brittle minerals, organic matter and maturity, natural fractures, bedding, porosity and adsorption, while the external factors include burial depth and horizontal stress difference. These factors control the stress-strain relationship, as well as mechanical properties such as strength, energy, and elastic modulus. Some suggestions were put forward, such as developing dynamic visualization technology of fracture evolution, building mathematical evaluation model of various geological factors, defining the lower limit of burial depth of brittle-ductile transition zone, and adopting new environmental protection anhydrous fracturing media.

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备注/Memo

备注/Memo:
更新日期/Last Update: 2020-07-24