A Study On Reservoir Distribution Of The Numbered 0 Sandbody In Linbei-Tianjia Area,Huimin Sag

Linpan oil field is located in the south-west of huimin sag,the oil and gas resources are rich,there are many source-reservoir-seal associations.Recently;Lin pan oilfield discovered thin oil-bearing sand bodies in oil shale sand,And early,In the process of drilling and development,more research focus is on the three sand of the reservoir and the two sand of the reservoir,but the study on the sand one,only in the study of mudstone cap rock,and the thin sand body weight of this section is not high.Mainly is the lack of understanding of the spatial distribution characteristics of sand body,the size of sand body,the type of deposition,the distribution of oil and its influencing factors.First of all,through core and thin section observation,petrology features of sand bodies have been analyzed,and on the basis of this,the granular features were analyzed and the depositional environment of the sandbodies belongs to typical lacustrine turbidite;and next,by analyzing the features of single well,joint well,and planar for the sandbodies,the numbered 0 sand body in the first member of Sha he jie Formation was subdivided into 1,2,and 3 secondary sand bodies,of which both the lower numbered 1 and the upper numbered 1 sand body represent constrained distribution,poor lateral connectivity,and small thickness,demonstrating low values for oil layer exploration and development;however,the numbered 2 sand body shows more extensive distribution,stable lateral development and better lateral connectivity,but universally thin thickness of sand bodies,in the central and northern part of the work zone,it represented good development of sand bodies,comparatively large thickness,averaging 4-5m,the sand body shows small thickness in other areas,averaging about 1m;meanwhile establish four interpretation analysis of oil distribution characteristics and influencing factors,and based on this evaluation oil potential in the reservoir and calculating reservoir reserves,selection of favorable development goals.researches show that,the enrichment of oil and gas was majorly controlled by structural location,reservoir quality,and the faults which connects the first member and the third member of the Sha he jie Formation.