Open AccessRelationship Between Organic Geochemistry and Hydrocarbon Preservation in Longmen Mountain Structural Belts
Author(s) -
Min Liang,
Hui Wang,
Fan Yang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/804/2/022018
Subject(s) - geology , hydrocarbon , tectonics , nappe , organic geochemistry , geochemistry , hydrocarbon exploration , source rock , cretaceous , bearing (navigation) , mining engineering , geomorphology , paleontology , structural basin , chemistry , organic chemistry , cartography , geography
Based on the analysis data of biomarkers and group components of crude oil and asphalt, this paper analyzes the organic geochemical characteristics of hydrocarbon in this area and its relationship with hydrocarbon preservation, understands the preservation and damage of hydrocarbon reservoirs, and then evaluates the resource exploration prospects of main hydrocarbon-bearing structures. Comprehensive study shows that the Longmen Mountain thrust nappe belt experienced the influence of multistage tectonic movement, resulting in the destruction of hydrocarbon-bearing structures in different degrees in space. The northern part of the Longmen Mountain structural belts underwent strong deformation during Indosinian and Himalayan periods, and the organic geochemical indicators showed that the hydrocarbon-bearing structures preservation conditions in the area were poor; the southern part of the Longmen Mountain structural belts and the Western Sichuan depression had moderate internal structural deformation, the Jurassic and Cretaceous systems were well preserved, with large stratigraphic thickness and good hydrocarbon preservation conditions.