Research On The Oil-source Correlation In Luxiang Fault Depression

Hydrocarbon source rocks, which is the core of the oil and gas geochemical research,has a very important role in oil and gas exploration, its application is mainly manifested in two aspects, one is the hydrocarbon source rock evaluation, the second is oil source correlation. Luxiang fault depression basin for a second-order tectonic units, located in the central part of ytong graben, can be further divided into large south sag and two secondary tectonic units of the five-star tectonic belt. Luxiang fault depression classification of crude oil and oil source correlation work exploration of this area has very important significance.Through the basic principle of oil and gas geochemistry, this paper applied organic geochemistry analysis method, the system analyses the Luxiang fault depression hydrocarbon source rocks and geochemical characteristics of crude oil, and systematic evaluation of the hydrocarbon source rock, according to the geological characteristics of the Luxiang fault depression, made a more refined oil source correlation.Luxiang fault depression in the luxury ridge group a large fan body development and double two paragraphs, adjacent, south source sag, the fan body and structure of composite favorable area is the main target area for exploration in the near future;Southeast margin of double a basal conglomerate and southwest blank area is a lithologic trap reservoir favorable exploration target area Luxiang fault depression is not lack of dark mudstone, big south sag of shuangyang group type, maturity is higher, with oil and gas;The luxury of a also has a certain hydrocarbon-generating ability;Hydrocarbon generation younge group co., LTD.Lu Xiang fault depression are rich in oil and gas content, the resource of 124 million tons of oil, 65% of them from shuangyang group, 33% from excessive ridge group.Natural gas resources in 30.3 billion, mainly in shuangyang group.Oil source correlation shows that the Luxiang fault depression crude oil physical property distribution is relatively concentrated, you can see the Luxiang fault depression oil source with consistency. From the point of crude oil density distribution, large south sag of crude oil density is higher, far away from the well of oil density are smaller, and no. 2 well density distribution of crude oil near fault is complex, changing law must cross characteristics,explain the Luxiang Fault Depression crude oil are mainly deer township fault big xinan fort river south sag and different fault sag mixed sources, from crude oil and shale gas chromatography and mass spectrometry data can be seen that crude oil and the Luxiang fault depression double one, two and Luxiang fault depression xinan fort comparable younge group, Shuang 1 period of Xing 31 well of a crude oil monomer hydrocarbon isotope shows that probably from star 27 Wells near shuang 2 period of mudstone.