DOI: 10.1306/09121313044
Scopus记录号: 2-s2.0-84902366943
论文题名: Predicting the depth of viscous stress peaks in moving salt sheets: Conceptual framework and implications for drilling
作者: Weijermars R. ; Jackson M.P.A.
刊名: AAPG Bulletin
ISSN: 0149-1618
EISSN: 1558-9348
出版年: 2014
发表日期: 2014
卷: 98, 期: 5 起始页码: 911
结束页码: 945
语种: 英语
Scopus关键词: Models
; Oil field equipment
; Shear stress
; Viscous flow
; Analytical formulas
; Analytical method
; Analytical results
; Conceptual frameworks
; Drilling operation
; Stress trajectories
; Velocity gradients
; Wellbore stability
; Trajectories
; allochthon
; autochthon
; conceptual framework
; creep
; drilling
; salt tectonics
; velocity profile
; viscosity
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Peak-stress zones and pressure anomalies around wellbores through moving salt bodies threaten well integrity. Our study provides a conceptual framework to identify the depth of peak zones of shear stress in moving salt sheets, whether autochthonous or allochthonous. We use analytical methods to determine the principal stress magnitudes and stress-trajectory orientations caused by ductile creep in crystalline salt. The four basic flow types analyzed are Couette, Poiseuille, no-slip squeezing, and free-slip squeezing flow. The analytical formulae specify velocity gradients, shear-stress profiles, and principal stress trajectories. The analytical results are compared with detailed flow visualizations in numerical and physical models of salt tectonics to test our generic conclusions. We offer guidelines to optimize drilling operations in moving salt bodies. The study suggests that stress trajectories and zones of viscous stress peaks in salt layers should be mapped routinely during well planning, in addition to the traditional analysis of elastic stresses and safe mud-pressure windows for controlling wellbore stability. Copyright © 2014. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902366943&doi=10.1306%2f09121313044&partnerID=40&md5=2e38eb39c3abe530111d348497631b6f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13188
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
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Recommended Citation:
Weijermars R.,Jackson M.P.A.. Predicting the depth of viscous stress peaks in moving salt sheets: Conceptual framework and implications for drilling[J]. AAPG Bulletin,2014-01-01,98(5)