Reservoir Description Of CAP Oilfield

CAP oilfield is tectonically located at OM basin. Surface is the jungle, and area is 299km2. The producing formation is Tertiary sandstone, Cretaceous conglomerate and fractured bedrock. 33 wells were drilled till Apr 2013. Target beds of 32 wells are M and C, And one well is Basamento. 28 oilwells(15 horizontal wells) go to production. Cumulative oil output is 969.994 Mbbl. Cumulative oil output is 91.474 Mbbl. Cumulative recovery is 0.23%.In CAP oilfield, Cenozoic, Cesozoic and Precambrian are deveoped. Conglomerate in Mesozoic Cretaceous C and sandstone in Cenozoic Paleogene M are main oil-bearing series,and metamorphous basement are minor oil-bearing ones. Mesozoic Cretaceous C is unconformably overlain by Paleogene and underlain by Jurassic, and Paleogene M is conformably overlain by Arr.Based on the data of geological model, logging, seismic, drilling, well completion and development provided by party client, reference to technology requirements of SY/T6191-1996 heavy oil reservoir description, according to the characteristics of steam injection exploitation of heavy oil reservoir, complement report for oil field development plan on reservoir description. Include the stratigraphic classification and correlation, structure, sedimentary environment, reservoir evaluation and oil and gas distribution characteristics, fluid properties, water seepage physical characteristics, reservoir pressure and temperature system, heat reservoir and fluid physical properties, reserves calculation and evaluation, 3d geological model correction and improvement.