| On the theoretical basis of modern sedimentology and high resolution sequencestratigraphy, this thesis, including literature research, regional research and key areastudy in details, focused on the sedimentary characteristics and sequencestratigraphic evolution and the favorable reservoir development of the lacustrinecarbonate rocks in Upper 4th Member of Shahejie Formation, Zhanhua depression bycores, logging and seismic data analyzing.Tectonic Evolution of Jiyang Sub-basin and the development of Paleogenecarbonate rocks implys that the tectonic evolution of a basin is the main controlmechanism of the formation and development of the lacustrine carbonate rocks. Thelacustrine carbonate rocks in the rift basins are mainly developed in two tectonicsequences- the early faulted stages and the conversion periods from faulted todepressing, like the Upper 4th Member and the 1st Member of Shahejie Formation.By core observation, microscope description, logging analysis and secondarylogging interpretation, lithofacies of lucastrine carbonate rocks are classificated intothree main types: limestone rocks, dolomite rocks, and rocks mixed with silicate.Which limestone is divided into intraclastic limestone, biogenic limestone, thelimestone of the composite particles and micrite; the dolomite is divided intoallochemical dolomite, algal cell dolomite, fine - microcrystalline dolomite.By analyzing the depth, salinity and lithofacies cycles of carbonate fomation, thispaper used flooding surfaces and submerged surfaces as the interfaces forhigh-frequency cycle division, and established the high resolution sequencestratigraphic framework. The highstand systems tracts in which the carbonate rocksmainly developing are divided into two fourth-order cycles and five fifth-order cycles.The main controlling factor of the carbonate sequences development are episodictectonic movement, climate change, sources supply, salinity and lake level change.By studying the evolution and distribution of carbonate system and associatedsedimentary systems in non-marine rift basin in the high frequency sequencestratigraphic framework, we established different models in both gentle and steepslopes. Two models are built in gentle slope: carbonate mixed with terrigenousclastics model and small algal mounds deposited in shallow lake model. Also, webuild two models in steep slope which is characterized by carbonate platform:bioclastic limestone developing on the higher part of the tilted fault block mesa modeland lowstand systems tract accretionary wedge gentle dipping platform model.Reservoir lithology study reveals that most carbonate reservoirs in study area arelow porosity and permeability reservoirs, main reservoir space types includedissolution pores, framework hole and intergranular hole, and the penecontemporaneous dolomitization prevails. Thus, the lithofacies and sedimentaryenvironments are main factors affecting the performance of the reservoir. Thosereservoirs are classficated and evaluated by genetic types, spatial structure, diagenesisand porosity evolution characteristics.Palaeogeomorphology characters caused by rift activities obviously control on thescale of carbonate rocks and sedimentary types. This paper predicts favorablereservoirs in fourth-order cycles, by analyzing palaeotectonic, palaeogeomorphology,sedimentary facies and reservoir characteristics, and considering seismic attribute andinversion results. Tilted fault-block platforms in the steep slope of rift basin, lowstandsystems tract accretionary wedge gentle dipping platforms, and small scale platformin gentle slope are favorable development areas of lacustrine carbonate reservoirs...
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