| In this paper,the tectonic evolution characteristics,fault distribution characteristics,sedimentary characteristics,reservoir characteristics,reservoir control factors and the reservoir types are determined in the lower part of Jiufutang Formation in Naiman Oilfield.Since the opening of the project,we have actively collected and sorted out the data,made clear the geological task,determined the research route and the key technology,carried out solid and effective work,and completed the task on schedule and satisfactorily.Based on the understanding and mastering of regional geological conditions and previous research results,this study has carried on the detailed explanation to the three-dimensional seismic data,uses the seismic inversion and the reservoir forecasting technology to forecast the favorable reservoir distribution,the comprehensive evaluation of traps,the choice Trail the favorable position.Completed the following research tasks:(1)Stratigraphic comparison and division: the work area of the various types of drilling and stratigraphic division and comparison,divided into sandstone group level;(2)Tectonic study: combined with drilling,logging,logging and test oil test data,comprehensive interpretation of three-dimensional seismic data,the implementation of Jiufutang group lower fault distribution characteristics and the top of the reservoir group structure evolution and traps;(3)Sedimentary facies study: study the main oil-bearing sand with the phase distribution;(4)Reservoir characteristics study and reservoir inversion: comprehensive evaluation of reservoirs,establishment of oil and water layer identification criteria,secondary interpretation of logging,and the use of wave impedance inversion technology,the favorable distribution of oil-bearing sand Forecast,carry out reservoir modeling research;(5)Reservoir characteristics study: study the reservoir control factors in the lower nine sections,determine the reservoir type,calculate the reserves. |
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