Petroleum Accumulation Condition And Hydrocarbon Reservoir Mode Of Fuyang Oil Layer Shang12 Block In Yushulin Field

Shang12 block lay in Shangjia nosing structure of Sanzhao sag northeast in Songliao basin northern ,nosing structure axial is east north. The west is adjacent to Yushulin monocline and have enrich oil and gas. On the base of coring report,log date and seismic date ,comprehensive utilization theory and approach of the sedimentology,geology,geophysics and organic geochemistry .By means of research of hydrocarbon accumulation condition and model, obtain main several recognize and outcome :1.Comprehensive utilization core,log and seismic date, analyze tri-sequence in Fuyang layer and built up different oil layer identification ,complete six compare profile in Shang12 block.2.By means of LANDMARK, quantitative predict sandstone effective thickness and obtain bore effective thickness and main layer in each well field in Shang12 block.4.Used blockage coefficient of fault and shale's daubing coefficient to evaluate blockage of faulting.In structural activity static zone,for example,T2 and T1-1 faulting,if faulting space exceeds 10m,then it has blockage property;if fault space exceeds 20m,then it has good blockage property.5. Analyze oil and gas seal feature and proto-establish fault seal model ,think principle stress seal and lithology distribution seal are main model of oil and gas seal.6. There are different thickness bind between oil source rock in Q1 zone and sandstone in Fuyang layer, fault is unique pathway of oil and gas migration .Owing to hydrosyalite dehydration earlier than oil-forming fastigium, primary migration depended water is affected. Some crude oil detent oil source rock and form surpressure, it is vertical migration power.7. Built up profit identification sign of object,GC NMRS and fluorescent image, it is extensive used in Shang12 block.8.Oil distribute top and water distribute under, oil layer complex,no unite oil/water boundary. Total , oil/water boundary north higher than south ,east higher than west .Different block is different ,even if same block is incomplete identity. Oil main distribute higher reservoir physical property and nosing structure high focus.9. Though analyzing reservoir ,built up hydrocarbon accumulation model that characterize structural-lithological reservoir and fault-lithological reservoir.