Influences of Hydraulic Fracturing on Fluid Flow and Mineralization at the Vein-Type Tungsten Deposits in Southern China
Joint Authors
Xing, Huilin
Liu, Xiangchong
Zhang, Dehui
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-07-24
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Wolframite is the main ore mineral at the vein-type tungsten deposits in the Nanling Range, which is a world-class tungsten province.
It is disputed how wolframite is precipitated at these deposits and no one has yet studied the links of the mechanical processes to fluid flow and mineralization.
Finite element-based numerical experiments are used to investigate the influences of a hydraulic fracturing process on fluid flow and solubility of CO2 and quartz.
The fluids are aqueous NaCl solutions and fluid pressure is the only variable controlling solubility of CO2 and quartz in the numerical experiments.
Significant fluctuations of fluid pressure and high-velocity hydrothermal pulse are found once rock is fractured by high-pressure fluids.
The fluid pressure drop induced by hydraulic fracturing could cause a 9% decrease of quartz solubility.
This amount of quartz deposition may not cause a significant decrease in rock permeability.
The fluid pressure decrease after hydraulic fracturing also reduces solubility of CO2 by 36% and increases pH.
Because an increase in pH would cause a major decrease in solubility of tungsten, the fluid pressure drop accompanying a hydraulic fracturing process facilitates wolframite precipitation.
Our numerical experiments provide insight into the mechanisms precipitating wolframite at the tungsten deposits in the Nanling Range as well as other metals whose solubility is strongly dependent on pH.
American Psychological Association (APA)
Liu, Xiangchong& Xing, Huilin& Zhang, Dehui. 2017. Influences of Hydraulic Fracturing on Fluid Flow and Mineralization at the Vein-Type Tungsten Deposits in Southern China. Geofluids،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1155597
Modern Language Association (MLA)
Liu, Xiangchong…[et al.]. Influences of Hydraulic Fracturing on Fluid Flow and Mineralization at the Vein-Type Tungsten Deposits in Southern China. Geofluids No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1155597
American Medical Association (AMA)
Liu, Xiangchong& Xing, Huilin& Zhang, Dehui. Influences of Hydraulic Fracturing on Fluid Flow and Mineralization at the Vein-Type Tungsten Deposits in Southern China. Geofluids. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1155597
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1155597