DOI: 10.1306/06011513195
Scopus记录号: 2-s2.0-84949450456
论文题名: Unreliable determination of in situ stress orientation by borehole breakouts in fractured tight reservoirs: A case study of the upper Eocene Hetaoyuan Formation in the Anpeng field, Nanxiang Basin, China
作者: Zeng L. ; Tang X. ; Jiang J. ; Peng Y. ; Yang Y. ; Lyu W.
刊名: AAPG Bulletin
ISSN: 0149-1447
EISSN: 1558-9177
出版年: 2015
发表日期: 2015
卷: 99, 期: 11 起始页码: 1991
结束页码: 2003
语种: 英语
Scopus关键词: Earthquakes
; Flow of fluids
; Fracture
; Hydraulic fracturing
; Stresses
; Well logging
; Borehole breakouts
; Borehole image logs
; Compression stress
; Earthquake focal mechanisms
; Natural fracture
; Production performance
; Sedimentary basin
; Tigh treservoirs
; Boreholes
; borehole breakout
; compression
; data interpretation
; Eocene
; fracture
; in situ stress
; reliability analysis
; reservoir
; stress analysis
; Anpeng Field
; China
; Henan
; Nanxiang Basin
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Elliptic borehole breakouts are usually used to determine the orientation of in situ stress in deep sedimentary basins. The long axes of borehole breakouts are generally perpendicular to the maximum horizontal principal compression stress (SHmax). However, the azimuth of borehole breakouts is found perpendicular to the chief strike (but not to SHmax) of natural fractures in tight reservoirs, Anpeng field of Nanxiang Basin, China. Based on the core data and acoustic and resistivity borehole image logs, the natural fractures are intensively striking at east-west orientation where borehole breakouts occurred in north-south. If the borehole breakouts are induced only by in situ stresses surrounding the well and the borehole breakouts are known at north-south, SHmax should be perpendicular at east-west, but according to analyses of the earthquake focal mechanism in circumjacent regions, hydraulic fracturing data, drilling-induced fracture data, and the production performance data, SHmax is in the northeast-southwest direction. This contradiction indicates that the influence of natural fractures may cause a serious deviation of the azimuth of borehole breakouts. Therefore, in this case, it is unreliable to determine the orientation of in situ stress only by borehole breakouts in fractured tight reservoirs. In addition, the main fluid flow direction is not parallel to the dominant natural fracture, which is controlled by in situ stress in tight reservoirs. Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949450456&doi=10.1306%2f06011513195&partnerID=40&md5=733f7dbe9c3cf8ecdf37e5dfcedb4fe3
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13018
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
There are no files associated with this item.
Recommended Citation:
Zeng L.,Tang X.,Jiang J.,et al. Unreliable determination of in situ stress orientation by borehole breakouts in fractured tight reservoirs: A case study of the upper Eocene Hetaoyuan Formation in the Anpeng field, Nanxiang Basin, China[J]. AAPG Bulletin,2015-01-01,99(11)