Research On Reservoir Forming Regularity And Trap Evaluation Of Shahai Formation In Southern Zhangqiang Sag Of Liaohe Oilfield

The study area is located in the northeast Qijiazi depression, Zhangqiang Pit,Zhangwu Basin in structure?Because of the lower exploration,level and lack of deep understanding of structural, reservoir characteristics and hydrocarbon reservoir characteristics,the progress for the oil-gas exploration and development-in this area goes slowly?In order to solve the key problem,the reservior prediction and hydrocarbon reservoir and some new technology related theory and Geophysics of coherence? impedance inversion were done in this study.By analysing the basic material of drilling, formation testing and pilot production, well logging-mug logging,and 3D seismic data,the formation characteristics,structural characteristics,reservoir characteristics and reservoir characteristics of oil and gas were systematically studied,and the following results and understanding were obtained:1.Based on 3D seismic data, well and seismic, the area stratum fine contrast with the division, the target layer Shahai Formation in the study area can be divided the lower and upper sections.2.On the basis of the fine stratigraphic correlation on the use of coherent body, time slicing in the area was constructed fine interpretation?The results show that the overall performance of structural features in the area from north to south, east to the west, the slow double-break type Kei-shaped depression, was nearly north-south strip distribution,the discovery and implementation of structural traps 6, trap area 5.36km2 were gotton.3.Applications of the Jason reservoir prediction technology Sahai were constrained by seismic inversion and reservoir prediction, and the results chow that Zhang Qiang depression southern reservoir development area, in a favorable sedimentary facies.4.Through the area of hydrocarbon source rocks characteristics, reservoir and cap combination and reservoir depth study of the road conditions, the results show that the area has good reservoir conditions. Finally, the study area were evaluated favorably traps, deploying two exploration wells.