摘要
对梁家楼远岸浊积油藏沉积特征进行了综合研究 ,并对其沉积模型进行了重建。在此基础上 ,结合渗流理论 ,建立了该浊积油藏的渗流模型 ,由此总结出了该油藏剩余油的分布形式及特征。结果表明 ,该油藏特高含水期同样蕴藏着可观的可动剩余油潜力 ,其剩余油控制因素为静态遮挡与动态水势 ,富集区主要分布于正韵律油层的顶部、正向微构造区、物性相变带及井间势平衡滞流区等 ;据剩余油分布形式、富集程度及现实开发技术等 ,以水平井、不稳定注水、化堵调剖等为技术手段而形成的富有特色的提高高含水油藏采收率的系列技术 ,取得了显著的增油降水效果 ,提高了油田的采收率与可采储量。对梁家楼油田浊积油藏开发后期剩余油的研究拓展了特高含水期油田的挖潜方向 ,并对进一步改善同类油藏的开发效果。
The sedimentary features of infralittoral turbidite oil reservoir were studied,and the sedimentary models were reconstructed.In combination with flow seepage theory,a vadose model for the turbidite oil reservoir was established.The distribution patterns of residual oil were summarized.The study results show that there is a considerable potential of movable residual oil in the reservoir during the period of extremely high water_cut.The factors dominating the distribution of the residual oil include static barrier and dynamic potential of water.The residual oil is mainly concentrated in the top of normal_cycled sedimentary layer,normal microstructure,variation zone of facies,and regions of force balance and flow stagnation.According to the distribution features of residual oil,the oil concentration degree and actual oil development technology,a series of distinguishing technologies for enhancing oil recovery of reservoir with a high water_cut,including the technologies of horizontal well,unsteady water flooding and profile control,were developed.The notable results in increasing oil production and lowering water percentage have been gained,and the high recovery and recoverable reserve have been obtained by applying these technologies.The study and practice of turbidite oil reservoir during the later period of development of Liangjialou reservoir can provide the important bases for development of such oilfield in high water_cut stage.It also provides references for obtaining a good development effect,high recovery and large economic gain for the similar oil reservoir.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2003年第2期69-75,共7页
Acta Petrolei Sinica
关键词
梁家楼地区
浊积油藏
沉积模型
渗流模型
剩余油分布
水平井
不稳定注水
堵水
Liangjialou area
turbidite oil reservoir
sedimentary model
vadose model
residual oil distribution
horizontal well
unsteady water flooding
water shutoff
