3D Numerical Model for Hydraulic Fracture Propagation in Tight Ductile Reservoirs, Considering Multiple Influencing Factors via the Entropy Weight Method

脆性 延展性(地球科学) 岩土工程 水力压裂 软化 材料科学 断裂力学 断裂(地质) 地质学 有限元法 结构工程 工程类 复合材料 蠕动
作者
Yang Ju,Guangjie Wu,Yongliang Wang,Peng Liu,Yongming Yang
出处
期刊:Spe Journal [Society of Petroleum Engineers]
卷期号:26 (05): 2685-2702 被引量:5
标识
DOI:10.2118/205385-pa
摘要

Summary In this paper, we introduce the entropy weight method (EWM) to establish a comprehensive evaluation model able to quantify the brittleness of reservoir rocks. Based on the evaluation model and using the adaptive finite element-discrete element (FE-DE) method, a 3D model is established to simulate and compare the propagation behavior of hydraulic fractures in different brittle and ductile reservoirs. A failure criterion combining the Mohr-Coulomb strength criterion and the Rankine tensile criterion is used to characterize the softening and yielding behavior of the fracture tip and the shear plastic failure behavior away from the crack tip during the propagation of a fracture. To understand the effects of rock brittleness and ductility on hydraulic fracture propagation more intuitively, two groups of ideal cases with a single failure mode are designed, and the fracture propagation characteristics are compared and analyzed. By combining natural rock core scenarios with single failure mode cases, a comprehensive evaluation index BIf for reservoir brittleness and ductility is constructed. The simulation experiment results indicate that fractures in brittle reservoirs tended to form a complex network. With enhanced ductility, the yielding and softening of reservoirs hamper fracture propagation, leading to the formation of a simple network, smaller fracture area (FA), larger fracture volume, and the need for higher initiation pressure. The comprehensive index BIf can be used to define brittleness or ductility as the dominant factor of fracturing behavior. That is, 0 < BIf ≤ 0.46 indicates that the reservoir has enhanced ductility and ductile fracturing prevails; 0.72 < BIf < 1 indicates that the reservoir has enhanced brittleness and brittle fracturing prevails; and 0.46 < BIf ≤ 0.72 means a transition from brittle to ductile fracturing. Based on fitting analysis results, the relationship between the calculated FAr and BIf is constructed to quantify the influence of reservoir brittleness and ductility on fracturing. The study provides new perspectives for designing, predicting, and optimizing the fracturing stimulation of tight reservoirs with various brittleness and ductility.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
4秒前
称心嵩发布了新的文献求助10
4秒前
zsy完成签到,获得积分10
5秒前
7秒前
7秒前
Bamboo完成签到 ,获得积分10
7秒前
8秒前
Bill完成签到 ,获得积分10
8秒前
laowuzheng发布了新的文献求助50
9秒前
妙脆角完成签到,获得积分10
9秒前
10秒前
YJL发布了新的文献求助10
10秒前
kelly发布了新的文献求助10
12秒前
橘子汽水完成签到 ,获得积分10
12秒前
Hello应助自信的宝贝采纳,获得10
13秒前
祖金杰发布了新的文献求助10
13秒前
14秒前
14秒前
16秒前
16秒前
辜陈乐应助毓凡采纳,获得10
16秒前
科研小趴菜完成签到 ,获得积分10
17秒前
17秒前
jay发布了新的文献求助10
18秒前
Parotodus完成签到,获得积分10
18秒前
19秒前
星辰大海应助TiAmo采纳,获得10
20秒前
yao发布了新的文献求助30
20秒前
CHEN完成签到,获得积分10
20秒前
烟花应助xiaoshu采纳,获得10
21秒前
朴素勒完成签到 ,获得积分10
21秒前
ltft发布了新的文献求助10
22秒前
单薄俊驰发布了新的文献求助10
22秒前
Demon发布了新的文献求助10
22秒前
帅哥完成签到,获得积分10
24秒前
慕青应助Fengliguantou采纳,获得10
29秒前
Demon完成签到,获得积分10
29秒前
Bluebulu完成签到 ,获得积分10
29秒前
今后应助科研通管家采纳,获得10
31秒前
orixero应助科研通管家采纳,获得10
31秒前
高分求助中
Kinetics of the Esterification Between 2-[(4-hydroxybutoxy)carbonyl] Benzoic Acid with 1,4-Butanediol: Tetrabutyl Orthotitanate as Catalyst 1000
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
Rechtsphilosophie 1000
Bayesian Models of Cognition:Reverse Engineering the Mind 888
Very-high-order BVD Schemes Using β-variable THINC Method 568
Chen Hansheng: China’s Last Romantic Revolutionary 500
XAFS for Everyone 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3137994
求助须知:如何正确求助?哪些是违规求助? 2788986
关于积分的说明 7789404
捐赠科研通 2445432
什么是DOI,文献DOI怎么找? 1300328
科研通“疑难数据库(出版商)”最低求助积分说明 625900
版权声明 601046