3D Seismic Data Interpretation And Reservoir Prediction In Middle And Shallow Layers In Longhupao Area

The area of Longhu bubble is located on the loess nose structure belt,and the sediment source is mainly controlled by the southern Huaide source,and the main source direction is south and southeast.Because during the oil and gas exploration,the edge faults and structural features of the reservoir are not very clear,and the thickness of the sandstone in the region is thin and the continuity is poor,which makes it difficult to predict reservoirs in the region.This study was conducted to address the above issues..Based on sequence,stratigraphy,and seismic data,this paper establishes the sequence stratigraphic framework of the Sacuoporic oil reservoir in the Longhupao area.Based on this,it conducts 3D seismic data interpretation of the Gaotaizi oil reservoir group,establishment of a space velocity field,drawing of a structural map,and study of structural features.Comprehensive drilling data shows that the central and southern areas of the Putaohua oil layer are the main oil production blocks.Therefore,seismic attribute analysis and geostatistical inversion studies were carried out on the southern central area of the Putaohua oil layer.These results were combined to complete the Putaohua oil layer.Reservoir prediction research.Based on the above research results,the following understandings have been drawn: Overall,the study area presents a pattern of “lower in the west and high in the east,and high in the middle and low in the middle”;the middle and west form a monoclinic structure with a high slope from the west to the southeast;T1,T11 reflective layer structure Characteristics The obvious long axis near the north-south-east anticline appears in the central part of the study area,which is the main oil production site in the study area.The development of faults within the study area has a strong regularity.In the vertical direction of the seismic reflection layer,the number of faults gradually increases from top to bottom.The faults in the horizontal direction are mainly NW-direction and NNE-direction.Occasionally there is a WE trending fault;the sand body is generally distributed with the sand body in the In the south,the continuity is higher and the thickness of the sand body is thinner;in the north,the thickness of the sand body on the slope belt is smaller and the continuity is weaker;the study destination layer is dominated by the distributary channel microfacies within the delta front and the two in the distributary channel.The laterally and scatteredly developed main sand microfacies,the sedimentary sand bodies are mostly discontinuous strips or flaky distribution;the study area mainly develops two types of lithologic traps: lithologic traps and fault-lithologic traps;The research results put forward two favorable goals.