Research On The Fine Structural Interpretation And Reservoir Prediction In The Banbei Area

The geological background of Banqiao structural belt is an inner-sag uplift,and the research area is held by the Dazhangyuan and Changlu faults.The Banbei area is a combined reservoir,the lower Tertiary sands in the oil-bearing series are dominated by the middle and lower Sha 1.Oil and gas are controlled by the dual factors of structure and lithology.Shahe Jie area is a sedimentary of curved gravity flow channel,and the reservoir is permeable sandstone.Judging from the current status of drilling,the main body of the structural belt has been fully developed.It is necessary to follow the idea of hydrocarbon reservoir exploration and implement the rolling expansion along the periphery of the structure to find lithologic reservoir of channel sand bodies.We have found oil-rich structures such as ban65,ban3-2,banshen78-1,etc in the Dazhangyu rise plate.Wells in descending banshen35,banshen2,etc.have also shown oil and gas as well,and obtained industrial oil.The main oil layer is Sha3-3,Sha3-1,ban65,banshen78-1,bannan3-2,and bannan5-2 area.The sha2 section in the Banqiao area is a fan delta depositional system,The lithology has been revealed by drilling,which is a lithological combination of thin layers of sand and mudstone in the longitudinal direction.The sha3 section of the main reservoir development section of the three section of sand is fan delta sedimentary system.The drilling reveals that lithology belongs to the lithologic combination of thin sand mudstone in the longitudinal direction,and the well control degree is poor in the middle of the depression.The sha3-2 and sha3-3 sections of sand and sand are interbedded with thick layer sand and mud.In the middle of the depression,the well control degree is poor,and the characteristics of the seismic emission are low frequency and weak amplitude continuous differential reflection.It is difficult to identify and predict the reservoir.Through petrophysical analysis of rock,electricity and earthquake,this study optimizes the logging and seismic attributes of the sensitive response of the reservoir area to the reservoir,and optimizes the inversion software and parameters on the basis of the deep rock physical analysis.The prediction of the rolling reservoir in the sha2 and sha3 section of the Banqiao area is carried out,and the sand group in the main oil layer is clearly defined.The corresponding relationship and the range of development and distribution provide strong support for well location and reserves evaluation.