关键词: 层状断块油藏, 精细油藏描述, 高含水, 剩余油分布, 开发

Abstract: Xin 47 block is a stratified and faulted reservoirs with high reserve abundance, in which the technology of zonal injection development was applied.Due to the influence of the heterogencity,the situation of water driving is non-equilibrium in the interlayer at the same well pattern.Since 1999,the composite water cut of Xin 47 block was higher than 90% and the conflict of the interlayer became aggravated.The original stratum of production and well pattern would not adjust to the demand of tapping potential production.Since 2000,the work of the fine reservoir description and the subdivision development had been done in Xin 47 faulted reservoir and achieved a very good result.After the work,the composite water cut was decreased by 3% and the rate of oil production was increased by 0.38% and oil recovery was increased by 5%.It is clear that the application of the technology of fine reservoir description and subdivision is feasible for a layered and faulted reservoir to increase the water injection recovery factor.

Key words: stratified and faulted reservoirs, detailed reservoir description, fine reservoir description, study of residual oil distribution, subdivision developing