Research On Characteristics Of Chang 6 Reservoir In Suijing Oil Feild

Ordos Basin is the second-largest sedimentary basin on land in China which possesses abundant oil&gas resource and has bright prospect in oil & gas exploration. Suijing oilfield is situated at the middlenorth of North Shaanxi. It is in Slope,suijing oil field. Chang 6 of the Triassic period formation is the main oil bearing series.On the basis of previous researches,we take fine strata classification and correlation theory as instruction divided and compared to strata in entire area and make a deep division to chang6 formation and get five oil bearing series.The article is theoretically based on reservoir geology,reservoir sedimentology,reservoir well logging geology,exploration geology etc. Comprehensively analyses all kinds of the sedimentary facies marker.Used core,well logging and abundant of static state and dynamic data to determine.Chang 6 formation is the meandering river delta deposition system.That’s main developed distributary channel and distributary bay. Using research results such as source direction and sedimentary facies,the characteristics of the sandbodies distribution and sedimentary microfacies have been discussed.Using porosity and permeability data,the controlling factors have been analyzed.On the basis of the systematic description and evaluation of various properties,the forming rules of reservoir are concluded and the data range of profitability are anticipated combined with well test data by Suijing region.