[1]褚春波,郭 权,黄小云,等.有限元分析径向水力压裂裂缝扩展影响因素[J].油气井测试,2018,27(02):59-66.[doi:10.19680/j.cnki.1004-4388.2018.02.010]
　CHU Chunbo,GUO Quan,HUANG Xiaoyun,et al.Finiteelement analysis on influencing factors for propagation of fractures induced in radial jet hydraulic fracturing[J].Well Testing,2018,27(02):59-66.[doi:10.19680/j.cnki.1004-4388.2018.02.010]
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有限元分析径向水力压裂裂缝扩展影响因素()
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《油气井测试》[ISSN:1006-6977/CN:61-1281/TN]

卷:
27
期数:
2018年02期
页码:
59-66
栏目:
出版日期:
2018-04-25

文章信息/Info

Title:
Finiteelement analysis on influencing factors for propagation of fractures induced in radial jet hydraulic fracturing
文章编号:
1004-4388(2018)02-0059-08
作者:
褚春波1;  郭  权1;  黄小云1;  黄振萍1;  何  宇2;  王亚辉2
1.中国石油大庆油田试油试采分公司  黑龙江大庆  163412
2.中国石油集团渤海钻探工程有限公司油气井测试分公司  河北廊坊  065007
Author(s):
 CHU Chunbo1;  GUO Quan1;  HUANG Xiaoyun1;  HUANG Zhenping1;  HE Yu2;  WANG Yahui2
1. Well Testing Company of PetroChina Daqing Oilfield Company Limited, Daqing, Heilongjiang 163412, China
2. Well Testing Branch of CNPC Bohai Drilling Engineering Co., Ltd., Langfang, Hebei 065007, China
关键词:
 ; 压裂; 水力压裂; 径向井; 裂缝; 有限元; ABAQUS; 引导能力; 影响因素
Keywords:
 ; fracturing;  hydraulic fracturing;  radial jet;  fracture;  finite element;  ABAQUS;  conductivity;  influencing factors
分类号:
TE353
DOI:
10.19680/j.cnki.1004-4388.2018.02.010
文献标志码:
B
摘要:
 径向水射流辅助压裂的裂缝起裂和扩展机理尚不明确，基于ABAQUS平台，采用扩展有限元法对径向井水力压裂过程中裂缝的扩展过程进行数值模拟，探索径向井方位角、井径、井长、水平地应力差、岩石杨氏模量、岩石泊松比、储层渗透率、压裂液黏度、排量等9个因素对径向井引导裂缝扩展效果的影响规律，并利用灰色关联分析法研究各因素对径向井引导效果的影响能力大小。结果表明，随井径、井长、岩石泊松比等参数增大，径向井对裂缝引导效果增强；随径向井方位角、水平地应力差值等参数增大，径向井对裂缝引导效果减弱。各因素影响径向井对裂缝引导效果的程度由大至小顺序为：水平地应力差值、径向井方位角、井径、岩石泊松比、压裂液排量、储层渗透率、井长、压裂液黏度、岩石杨氏模量。该分析为径向井辅助压裂技术在低渗油藏的应用具有指导意义。
Abstract:
 The initiation and propagation mechanism of fractures induced in radial jet fracturing (RJF) is unknown. In this paper, numerical simulation was performed for propagation of RJF fractures by using the extended finite element method on the ABAQUS platform to highlight the impacts of 9 factors, i.e. radial well azimuth, borehole diameter, well length, horizontal differential geostress, Young modulus, Poisson’s ratio, reservoir permeability, fracturing fluid viscosity and flow rate, on the propagation of the hydraulic fractures. Moreover, the grey relational analysis was conducted to diagnose how the factors affect the propagation of RJF fractures. The study results show that the propagation capacity of RJF fractures enhances with the increase in borehole diameter, well length, and Poisson’s ratio, but reduces with the increase in radial well azimuth, horizontal differential geostress and other factors. In view of the impacts, these factors present a descending order of horizontal differential geostress, radial well azimuth, borehole diameter, Poisson’s ratio, fracturing fluid flow rate, reservoir permeability, well length, fracturing fluid viscosity, and Young modulus. The results provide necessary guidance for application of radial jet fracturing in lowpermeability oil reservoirs.

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更新日期/Last Update: 2018-06-21