The Mid-late Comprehensive Adjustment To The Development Of S1612 Block Thickened Oil Deposit

Based on the previous geological understanding of S1612 steam huff and puff,in view of the unclear understanding of the relationship between oil and water in the current block,poor steam huff and puff,and unequal utilization of steam,the evaluation on the effect of steam huff and puff development was carried out.The throughput level,vertical utilization,Revealing the remaining oil distribution rules,implementing the remaining potential,further deploying and tapping the potential wells,enhancing the utilization of oil layers and improving the development results.The specific research contents include the following aspects:Analysis and Evaluation of Development Effectiveness: Analysis of development characteristics of steam stimulation in blocks and pilot zones;factors affecting development effectiveness;and major problems in current development.The main development indicators for evaluation;is the way,well and well spacing adaptability or not.Research on Residual Oil Distribution: Based on the study of the utilization status of vertical oil reservoirs and the study on the distribution characteristics of "three fields",the distribution of residual recoverable reserves and its influencing factors are determined by geophysical well logging,material balance and numerical simulation,and the potential directions are proposed.Reservoir engineering research: development methods,well patterns and well spacing studies;optimization of parameters under optimal conditions;development and deployment and forecasting of indicators.In view of the geological characteristics and development regularity of the Xing long tai reservoir in S1612 and the main problems in the process of development,based on the study of the fine geology of the reservoir,based on core observation,well logging and production dynamic data,The main controlling factors of heavy oil production and development and the remaining oil distribution are the targets.Based on the dynamic and static research methods,the remaining oil distribution characteristics are revealed comprehensively,and the remaining oil formation conditions,distribution rules and control factors are clarified in heavy oil reservoirs,The residual oil tapping target classification and description.