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Volume 13
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10.3390/min13081043
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Article

Genesis and Geological Significance of Permian Oilfield Water in the Western Periphery of the Mahu Sag, Junggar Basin, China

by
Jiasi Li
1,
Shuncun Zhang
2,
Jun Jin
3,
Aimin Jin
1,*,
Zhanghua Lou
1 and
Rong Zhu
1,*
1
Ocean College, Zhejiang University, Zhoushan 316021, China
2
Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
3
Research Institute of Experiment and Detection, PetroChina Xinjiang Oilfield Company, Karamay 834000, China
*
Authors to whom correspondence should be addressed.
Minerals 2023, 13(8), 1043; https://doi.org/10.3390/min13081043
Submission received: 21 June 2023 / Revised: 28 July 2023 / Accepted: 2 August 2023 / Published: 6 August 2023
(This article belongs to the Special Issue Advances in Fluid Inclusions and Geofluids)
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Abstract

Oilfield water contains valuable geological information and plays an important role in petroliferous basins, being closely related to diagenesis, reservoir physical properties, and hydrocarbon preservation conditions. Here we present a case study of oilfield water in Permian formations in the western periphery of the Mahu Sag, Junggar Basin, China. The genesis of oilfield water and its application in oil exploration were investigated through the coupling of tectonic activity, paleoclimate, and water–rock interaction. Volcanic activity provided a rich source of ions, and a hot paleoclimate intensifies the evaporation and concentration of sedimentary water. Tectonic fractures offered channels for water exchange among formations. Water–rock reactions, marked by sodic feldspathization and calcium feldspar dissolution, had profound effects on the oilfield water type and reservoir properties. We established a link between oilfield water and favorable targets for oil exploration. In terms of vertical trends, the Jiamuhe and Upper and Lower Urho formations have strong sealing abilities for hydrocarbon preservation. In the horizontal dimension, areas with high total-dissolved-solid and CaCl2 concentrations, low rNa/rCl, rSO4 × 100/rCl, (rHCO3+CO3)/rCa, and rMg/rCa ratios are favorable for oil exploration.
Keywords: oilfield water; genesis; geological significance; Permian; Mahu Sag oilfield water; genesis; geological significance; Permian; Mahu Sag

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MDPI and ACS Style

Li, J.; Zhang, S.; Jin, J.; Jin, A.; Lou, Z.; Zhu, R. Genesis and Geological Significance of Permian Oilfield Water in the Western Periphery of the Mahu Sag, Junggar Basin, China. Minerals 2023, 13, 1043. https://doi.org/10.3390/min13081043

AMA Style

Li J, Zhang S, Jin J, Jin A, Lou Z, Zhu R. Genesis and Geological Significance of Permian Oilfield Water in the Western Periphery of the Mahu Sag, Junggar Basin, China. Minerals. 2023; 13(8):1043. https://doi.org/10.3390/min13081043

Chicago/Turabian Style

Li, Jiasi, Shuncun Zhang, Jun Jin, Aimin Jin, Zhanghua Lou, and Rong Zhu. 2023. "Genesis and Geological Significance of Permian Oilfield Water in the Western Periphery of the Mahu Sag, Junggar Basin, China" Minerals 13, no. 8: 1043. https://doi.org/10.3390/min13081043

APA Style

Li, J., Zhang, S., Jin, J., Jin, A., Lou, Z., & Zhu, R. (2023). Genesis and Geological Significance of Permian Oilfield Water in the Western Periphery of the Mahu Sag, Junggar Basin, China. Minerals, 13(8), 1043. https://doi.org/10.3390/min13081043

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