Reaserch On Refined Evaluation Of Reservoir In Nanpu No.1 Structure Zone

The middle and shallow layers of Nanpu No 1 structure is rich of oil and gas,it's also the main oil production area of Naipu Oilfield which is provided with a larger rolling evaluation of the development potential.Nanpu No 1 structure develop faults and igneous rocks,and the reservoir is dominated by tectonic reservoirs.Difficulties exist in the process of the refined evaluation of reservoirs.Therefore.it is necessary to carry out refined reservoir evaluation study.This paper makes full use of the seismic,logging and reservoir information,conbings the space of the fracture system and implement the construction,carries out reservoir prediction,and analyzes reservoir,which regards geophysical comprehensive geological interpretation as the main lines.This article takes the middle and shallow layers of Nanpu No 1 structure as the research object,based on the study of basic structure and deposition characteristics,through the joint conparison,refined calibration,speed analysis,following the principle of the region to the local,the oil groups to the small layer,the rough to the fine,and control the principle of the interpretation step by step,conduct the refined division and comparison of the reservoirs.The characteristics of the seismic wave of each oil group were implemented,and a reasonable stratigraphic grid was established,the horizons were adjusted,and the fracture characteristics and structural feature were defined,achieving the refined evaluation of the middle and shallow layers of Nanpu No 1 structure.Aiming at the main oil layer in the middle and shallow layers,based on the analysis of lithology and electrical properties,we combined well datas and seismic datas.Based on attribute analysis to realize the qualitative prediction of regional deposition background,preferred sensitive logging curve,and unfold geostatistical inversion,the quantitative prediction of reservoir favorable distribution area and the oil-gas possibility is realized.According to the research results of structure,sedimentation and reservoir characteristics,we carried out the research on the law of reservoir.By identifying the tectonic zones and eliminating the development area of igneous rocks,we identified two target optimal blocks,evaluted the available reserves comprehensively and expanded the scale of the reservoir of Nanpu No 1 structure.