The Research On Interior Characteristics Of Shuguang Buried Hill Of Liaohe Depression

There are rich oil and gas resources in Shuguang buried hill of Liaohe eastern sag,and good exploration and development results have been achieved.But the degree of exploration in the weathered crust reservoir of it is high,and the exploration is becoming more and more difficult.In recent years,with the continuous improvement of the theory and technology of buried hill's interior exploration,the exploration potential has been rediscovered in the Shuguang buried hill.The Shuguang buried hill has the characteristics of interior accumulation,which is very complicated from the stratigraphic sequence,the structural features,the lithology of reservoir stratum,the property of reservoir stratum and the attitude of stratum.The interior accumulation theory has been put forward at the beginning of the discovery of the Shuguang buried hill,and they point out that the attitude of stratum has an important effect on the interior oil reservoir.However,it has not been effectively solved because of the complex geological structure and the limitation of seismic and geological data.In this paper,according to seismic,drilling,logging and testing data,the stratum in this area was resurched,and a new framework of the stratigraphic sequencehas been establishished,.It is pointed out that Shuguang buried hill can be divided into three layers in the longitudinal direction,they are Archean,Proterozoic and Paleozoic from bottom to top;The study on stratigraphic correlation,seismic interpretation and structure research has been carried out,the attitude of stratumhas been reasurched with a variety of methods of dip logging data,seismic data and comprehensive geological analysis.The stratum distribution of Shuguang buried hill in both vertical and horizontal has been understanded deeply,in addition,the anatomy of the reservoir which has been found detailedly,the characteristics of oil and gas reservoir in buried hill has been studied,and a three-dimensional reservoir model whitn multi-zone and multi-layer has been established,and the exploration direction and the favorable target has been pointed out on this basis.Through the study of this paper,the exploration field and scale of the Shuguang buried hill have been expanded,and further breakthrough progress has been made in western slope exploration in the western depression.