Characteristics Of The Chang 8 Oil Formation In Xunyi Exploratory Are At Ordos Basin

This master thesis based on Sequence stratigraphy, sedimentary petrology,petroleum geology and other related disciplines theory and research methods as guides.By the data of 78 longing in Xunyi region.Using each element From point to line,line to plane(single well-conneted wells-plan) to compilantion,and constantly modify. Mainly in Xunyi Chang 8 oil exploration division and stratigraphic correlation, sedimentary facies and sedimentary microfacies distribution studies.Analysts believe that Xunyi exploration area located in the south of the Ordos Basin Weibei uplift due at the edge of the basin structure and Chang 8 basin west-dipping gently monoclinic significantly different by the larger Indo movement and Himalayan movement affected.Study area KT mark layer(Zhangjiatan shale), KB flag layer(colored clay layer) and KT0 flag layer(Li River shale) sign three layers developed well in favor of the formation. Through various stratigraphic correlation method, dividing Xunyi Chang 8 oil exploration group into four segments. In addition to the development of the study area long 81 deep lake, the rest are developmental delta front. Provenance direction along the river from southwest developed two main rivers, mainly underwater distributary channel and diversion bay for Micro phase.River along the direction of the source material stable development did not change much over the entire length of 8 times the strength of the river with the hydrodynamic conditions in the latter part of the lake into a slightly shortened.