Analyzing the gravitational stress field to forecast hydrothermal field—A case study of TAG hydrothemal field

According to drilling data,two layer’s model is established by corresponding physical properties.Based on topographic data,here we use ANSYS software to simulate the gravitational stress field of TAG hydrothermal field.The result shows that,the hydrothermal vent locations are corresponding to the lo...

Full description

Saved in:
Bibliographic Details
Published in:Acta oceanologica Sinica 2017-01, Vol.39 (1), p.46-51
Main Author: Chen, Qinzhu
Format: Article
Language:Chinese
Subjects:
Drilling
Freshwater
Marine
Physical properties
Topography
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:According to drilling data,two layer’s model is established by corresponding physical properties.Based on topographic data,here we use ANSYS software to simulate the gravitational stress field of TAG hydrothermal field.The result shows that,the hydrothermal vent locations are corresponding to the low stress area of the maximum horizontal stress.The stress of the active TAG doom area are characterized by local stress low surrounding by relative stress high,and the inactive MIR doom area without typical hydrothermal vent topography features located on unclosed area of the maximum horizontal stress low.Based on these conclusions,we predicted five places where the hydrothermal liquid probably flew out.According to drilling result,significant anhydrite was recovered in these areas,indicating that gravitational stress could be used for hydrothermal activity prediction.
ISSN:0253-505X
1869-1099