Boundary Determining and Type Dividing of Tectonics Hinge Zone for Oil & Gas Significance
Yun Jinbiao
Jin Zhijun
Ning Fei
Liu Shilin
Luo Ji
Abstract：Superposed basins are well developed in West China.There are uplift(or ancient uplift)and depression,positive su-perposition,negative superposition or sag,and seesaw styles.Different superposed styles have different roles for enrichment and preservation of oil and gas.Seesaw type is the most common in edge of basin superimposed style.Analysis shows that in the process of basin vertical adjustment,the transformation of tectonic hub is the inevitable product and part of the adjusting range,it includes area which is a new structure trap area.There are adj usted to basin region area,stratigraphic trend slow,but the direction has not changed.Behind the hinge zone structure,the lower strata trend change polarity.The position of the tec-tonics hinge zone is variational with basin history.The tectonics hinge zone constantly advanced within the basin evolution, three types of structure were formed that were inheritance tectonics hinge zone,the new tectonics hinge zone,and inversion (abandoned)tectonics hinge zone.Late inherit tectonics hinge zone is the most favorable for oil and gas enrichment;Late tec-tonic new tectonics hinge zone is favorable for oil and gas accumulation;Reverse tectonics hinge zone(abandoned tectonics hinge zone)is unfavorable for oil and gas preservation.
Keywords：superimposed basinseesaw moveadjusttectonics hinge zonepetroleum geology
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 827-834 )