The Coupling Relationship between Hydrothermal Fluids and the Hydrocarbon Gas Accumulation in Ordovician of Shunnan Gentle Slope, Northern Slope of Tazhong Uplift
Lu Ziye
Chen Honghan
Yun Lu
Cao Zicheng
Han Jun
Shang Pei
Abstract：Natural gas allumulation has become one of the hot spots in the current research.In this paper,44 samples of the Ordovician in Shunnan area have been employed to make diagenetic observation,fluid inclusions measurement,carbon and oxy-gen isotope measurement and Raman spectrum,aiming to recognize the hydrothermal fluid flows and speculate the time of the hydrothermal fluid flows and the accumulation of the oil and gas.The silicified limestone and the calcite,quartz cement in the cracks and caves are the products of hydrothermal fluids,accompanied with the first stage of gas accumulation during late Her-cynian-Indosinian.The second stage of gas accumulation produced during Himalayan.Hydrothermal activities not only promote the gas accumulation during Hercynian,but also play a positive role in improve and preserve the reservoir spaces.
Keywords：northern slope of Tazhong upliftShunnan areahydrothermal mineralFluid inclusionsstable carbon and oxygen isotope ratioshydrocarbon
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 487-498 )