A Systematic Study Of The Fan Sedimentary System Es₃ And Es₄ In The Slope Of Binxian Bugle

The development area of sand-gravel fan within raised southern slope in Binxian lies in the north rim of Dongying depression. It shares a border to the north with Binxian bugle and is also bordered by Lijin source sub-sag in the west. The structure of this area belongs to the west of Binnan-Lijin fault zone. The systematic study has not been made all the time to stratigraphic sedimentary system of Es3 and Es4 sections in the slope of Binxian bugle due to the complex fan sedimentary system in this area along with vague understanding to the rule. The recognition in plane distribution rules and vertical evolution characteristics is lacking. Meanwhile, there is no fine division to this type of oil reservoir stages being restricted by the seismic data quality and description techniques. Thus we need to make a further accurate analysis to distribution characteristics of the sedimentary facies, especially the flat sedimentary microfacies distribution rules calls for being confirmed as soon as possible. Make a finer characterization to fan stages and set up an effective reservoir evaluation standard. In this way, the above-mentioned problems will be solved and the progressive exploration and development in this kind of oil reservoir will also be guided to be accomplished in scientific and effective ways.This thesis aims at studying stratigraphic and structural characteristics of the research area as well as constructing high-resolution sequence stratigraphic stratum framework through comprehensive analysis in terms of seismic, core, logging and development data. Clarify the sedimentary system and sand body distribution by means of single well facies analysis, sedimentary microfacies study and sedimentary model analysis. Carry out the research specific to fine division of sand-conglomerate body phases within Es3 and Es4 sections in the slope of Binxian Bugle along with description methods of effective reservoir geophysics, and also construct partition rules and recognition patterns of sand-conglomerate. Explore predictive technologies suitable for sand-conglomerate reservoirs and physical properties of the local area by combining petrologic characteristics of reservoirs and provenance analysis results. Make a comprehensive evaluation on oil reservoirs of sand-conglomerate fans in terms of the studies of sedimentation and reservoir forming rules, and simultaneously select favorable areas in priority for use of target argumentation.