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《Science Technology and Engineering》 2017-29
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The Comprehensive Evaluation of Tight Oil Reservoir in Sichuan Jurassic Da'anzhai Formation

ZHOU Guang-zhao;LIU Hong-qi;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University;  
Integrated according to the field geological section,thin section identification,X-ray diffraction,field emission scanning electron microscopy(SEM),reservoir property,pore structure,organic carbon(TOC),chloroform bitumen " A",hydrocarbon generation potential(S1 + S2) and rock mechanics analysis,the upper region siltstones taean village Duan Youli reservoir was determined for shell limestone and shale for thin layered combination.A freshman in Sanya for relatively high quality reservoir,brittleness mineral content is significantly higher than freshmen and big sanya,tend to produce more natural fracture and reservoir by fracturing in the late.organic carbon(TOC) average was 1.8%,the hydrocarbon generation potential(S1 + S2) for 1.1%,has the high potential of oil and gas.Through the rock thin section and the analysis of the casting thin sections no village paragraph was found to dense oil reservoir pore-fracture type reservoir.Using high pressure mercury injection data,reservoir physical property data and other technical analysis Dan'anzhai section of reservoir physical characteristics,the results show that the top walled section of the reservoir is a typical low porosity and low permeability reservoir.scanning electron microscopy(SEM) analysis has been clear about the reservoir micro-nanoscale pore development and distribution rules.Clay minerals content between the particles of intergranular hole in upper segment most freshmen sanya,organic matter associated with organic matter development between holes and hole in freshman sanya upper connectivity is better.Comprehensive analysis and judgment freshman Sanya for upper region siltstones Dan'an upper village section of reservoir exploration and development potential was presented.
【CateGory Index】: P618.13
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