Research On The Residual Oil Distributing Of Thin Interbed Sandstone Reservoir Of Shen67 Zone

Located in QianJin rupture anticline structure region of damingtun sag, Shen67 block reservoir's oilferious section is long(800-1000meters), sub-layer number is excessive(145 monolayers), which monolayer thickness is thin(1-3meters), the reservoir type is tructure lithology reservoir with the characteristics of middle porosity, high permeability, low density, viscosity and freezing. After historical adjustment of layers, such as well pattern and well spacing, the distributing regularity of remaining oil is unclear, so that there are some difficulties in potentical probing. Through fine contrast of reservior and liquid flow cell partition, the properties including reservoir framework, sand interspace distribute, sand continuity and connexity between sand have been studied clearly. On the basis of measure well data standardization, many relating reservoir parameters, such as lithology, petrophysical property, oilferious pattern, have been precisily confirmed. Through the analysis on samp testing and production developments data, the dynamic of the permeable channel and pore structure during long-term development has been studied in order to adjusting injection and production relation. With the help of GOCAD, the 3D model of heterogeneity of reservoir has been built. Through numerical simulation, the parameter diversification regularity between well and the remaining oil distributing pattern have been predicted. The comprehensive adjust scheme has been constituted, nine adjustment wells were already producted, and four wells initial daily oil production was more than 8t/d, the result was coincident with reservoir cognition, and preferable economy benefit and society benefit were also acquired.