Study On Comprehensive Control Countermeasures Of Chang 4+5 Reservoir In Jiayuan

In recent years,with the increasingly serious contradiction of Reservoir Resources in Jiayuan area,most of the reservoirs are of poor grade,some of the regional layers are not developed deeply,and affected by the task of increasing reservoir and stable production,only the previous understanding of the block has been far behind the needs of oilfield development.In order to deepen the understanding of the Chang4+5 oil layer in Jiayuan area,this paper selects the Chang4+5 oil layer as the research object,and analyzes the Chang4+5 reservoir The comprehensive control measures of oil reservoir are studied.?1?Research background,ideas and technical route.This paper describes and analyzes the exploration and development process of Chang4+5 reservoir in Jiayuan.The area has experienced two development stages,namely,integrated scale development stage and rolling development stage.The development features are high production and fast production reduction.?2?In this paper,the geological oil reserves of Chang 4+5 reservoir in this area are recalculated,and a lot of detailed statistical analysis work is done to determine the parameters.Finally,the superimposed oil-bearing area of the area is 34.2km2,and the proved geological reserves are 594.7×10⁴t.At the same time,the recoverable reserves of Chang 4+5^2-2,Chang4+5^1-1and Chang 4+5^1-2are 18.60%,17.08%,17.26%and 144.95×10⁴t respectively.?3?Analysis and Research on the development status and existing problems.The development status of Jiayuan area and Chang 4+5 reservoir are analyzed respectively.High water cut wells and burst water flooded wells are increasing in the study area,which makes it difficult to control.The overall production capacity of the study area is low,and there are many shut-down wells.The low production strength of oil wells in the study area leads to high water storage rate and other indicators.Therefore,it is necessary to strengthen the liquid production intensity.?4?Measures taken in Jiayuan area and their effects.This paper mainly analyzes and studies the technical transformation of oil wells,the recovery of shutdown and the adjustment of injection allocation.The effect of technical transformation in this area is not obvious,and it is difficult to stop well and recover.?5?The development adjustment and comprehensive treatment scheme of Chang 4+5reservoir in Jiayuan project area are put forward.Through the research,we can improve and adjust the injection production system,well pattern,recovery of shut-down wells and follow-up of supporting measures.The main measures taken to improve the injection production system are injection production layer system I,plugging the advanced water injection layer,and the comprehensive treatment measures are mainly hole filling,fracturing,deepening pump setting and injection volume adjustment of water injection well group As the general idea of adjustment and treatment of Chang 4+5 reservoir in Jiayuan project area.And focus on the matching and improvement of injection production well pattern and the recovery of low efficiency well and shut down well recovery,and finally determine the development adjustment and comprehensive treatment scheme of Chang 4+5 reservoir in Jiayuan project area.