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Sedimentary Systems of the Third Member of Shahejie Formation at Banqiao-Binhai Zone of Huanghua Depression

Author: DuGuiZuo
Tutor: LaiShengHua
School: Xi'an University of Petroleum
Course: Mineral prospecting and exploration
Keywords: The third member of Shahejie Formation Paleogeomorphic reconstruction Depositional system
CLC: P618.130.21
Type: Master's thesis
Year: 2010
Downloads: 166
Quote: 2
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Abstract


Banqiao-Binhai area is located in the central part of Huanghua DePression of Bohai Bay Basin,closing to Cangxian Uplift.The third member of Shahejie Formation area is studied in this thesis based on the theory and the method of sedimentology, Geological Logging, Seismic stratigraphy, Seismic sedimentology, Paleogeomorphic reconstruction and depositional regime.The purpose of this study is to reveal the distribution of depositional systemsThe lake depositional system in this area and five type of facies,including fan delta, Braided river delta,Nearshore Subaqueous Fans,farshore Subaqueous Fans,lake,and analyses sedimentary facies,subfacies are identified combining the drilling core,well log,seismic and interior testing analysis.The microfacies and pressure phase are also studied in detail.Seven types logging facies is identified by combining drilling core and well log in this thesis.The channel deposition is mainly reflected by theTeeth of box log,bell log and Teeth of bell log;The sand sheet is reflected by the Teeth of Funnel-shaped log and finger log reflect bar, Spiking log.The response mode of deposition and seismic of the third member of Shahejie Formation is constructed by combining the information of drilling core and seismic. The paper considered that mounded facies and lensing facies reflect bar;There is preferable relationship between filling facies and channel;foreset facies reflect fan delta;paralleling facies reflect characteristic of interbed of lake mud and sandstone in lake;chaotic facies reflect basin floor fan complex.Paleogeomorphic reconstruction indicates that fault system decides paleogeomorphic characteristic.Fault depression is not only the channel of transportation, but also the sandstone deposition site.Based on paleogeomorphic characteristics,Single well facies analysis,connecting well facies analysis,spatial distribution of sand characteristics and seismic attributes dates.The research considers that during the sedimentation of ES3,Fan delta and Braided river delta are developed in ES33,while Complex fan of Nearshore Subaqueous Fans and Farshore Subaqueous Fans,Fan delta and Braided river delta are developed during ES32 and ES31.

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CLC: > Astronomy,Earth Sciences > Geology > Of ore deposits > Deposit classification > Fuel deposits > Oil, natural gas > Geological formations,oil and gas reservoirs (fields ). > Reservoir bed
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