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Reasearch on the Sedimentary Facies and Oil-rich Rule of Fuyu Oil Layer of Chang 10 Area

Author: LiXiaoWei
Tutor: FuGuang
School: Daqing Petroleum Institute
Course: Mineral prospecting and exploration
Keywords: high resolution sequence stratigraphy isochronal strata framework sedimentary facies
CLC: P618.13
Type: Master's thesis
Year: 2010
Downloads: 56
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Abstract


The quantitative study of sequence stratigraphy and distribution of sandbody has been done on Fuyang reservoir in ChanglO area, using the data of core, laboratory analysis, well logging and seismic, realized by computer, under the direction of high resolution sequence stratigraphy theory and reservoir quantitative description theory. After comparing the advantages and disadvantages among different methods of stratigraphic classification and correlation, the method available to the study area is found on the base of the former researches by others. And then the high resolution sequence stratigraphic classification and correlation of bone sections is started, which are interregional and cross the densest well network, and the knowledge of the characteristics of strata and the general deposition of Fuyang reservoir in ChanglO area applies strong bases for this work.According to observing and describing of cores of 286 wells in study region, lithology type,depositional structure is recognized and lithoface is divided.At the same time, combining well logging withlogging, many kinds of log facies and the association are divided. By combining well with seism,depending on the division and correlation of high resolution sequence stratigraphy in Fuyang oil bed, theisochronous stratum framework was established. On the base of the division of sedimentary microfaciseand interpretation of seism, applying the thought of the multi-component analysis of seismic attributes andtransforming the attributes to sedimentary parameter, sand ratio and sand depth map is drawed. At lastcombining cores and well logging characters, applying the principle of facies sequence, the distribution ofdepositional microfacies of middle cycle stratum is ascertained.Finally, According to depositional microfacies and of independent sand body Fuyu oil layer, comparing the well testing of exploration well and evaluation well and the flow potentia of the exploration well, we can difinite the Hydrocarbon accumulation mode and find out distribution of oil and water,and optimizate the target areas of hydrocarbon accumulation.So we can understand the petroleum geology and reservoir characteristics of the formation and distribution in Chang 10 area of Chaoyanggou oil field and provide the geological assurance fo the further Oil and Gas Exploration and Development.

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