摘要
大庆喇萨杏油田为大型陆相多层砂岩油藏,目前已进入特高含水开发阶段,各类储层渗流特征发生明显变化,剩余油分布高度零散,液/油比急剧上升,控含水、控递减难度日益加大。通过室内水驱油实验、精细油藏数值模拟、小井距密闭取心井及生产动态监测资料分析研究,系统剖析了特高含水期平面、层间及层内三大矛盾的变化特征,分析了影响三大矛盾加剧的主要因素。通过典型区块和近年检查井逐井逐层剩余油精细剖析,总结了平面、层间及层内剩余油分布特征,建立了平面、层间、层内3个层次的精细结构调整模式,并在大庆喇萨杏油田6个水驱精细挖潜示范区得到成功应用,在含水率为93%的条件下,取得4年产油量不下降、含水率不上升的良好效果,探索出了一种特高含水期老油田水驱精细、深度开发的新模式,为多层砂岩油藏水驱开发提供了可借鉴的经验。
Daqing Lasaxing oil field has large continental facies multi layered sandstone reservoirs,which are at ultra-high water cut stage.There exist significant changes in percdation characteristics of various reservoirs; residual oil is highly scattered,and liquid/oil ratio rise sharply; and the difficulty in controlling water cut and production reduction is gradually increased.Based on the indoor water displacing oil experiment,fine reservoir numerical simulation,and analysis of sealed coring well with small spacing and dynamic production monitoring data,the variable characteristics of the three major contradictions of planar layer,interlayer and inner layer in high water cut stage,as well as the dominant factors influencing above contradictions were systemically analyzed.Through detailed analysis of the layer-by-layer residual oil of each well in typical block and investigated in recent years,the distribution characteristics of residual oil in planar layer,interlayer and inner layer were summarized; the fine structural adjustment model in these three levels was also established,and then successfully applied in 6 fine potential-tapping demonstration areas of water-flooding Daqing Lasaxing oil field.The water cut is 93％ and not risen,based on which the oil production has not dropped for 4 years.Moreover,a new model of fine and deep development is explored for water-flooding maturing oil fields at ultra-high water cut stage,providing a reference for the development of multi-layered sandstone reservoirs using water flooding technique.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2015年第2期210-216,共7页
Acta Petrolei Sinica
基金
国家重大科技专项(2011ZX05010-002
2011ZX05052)
中国石油天然气股份有限公司重大科技项目(2011E-1205)资助
关键词
陆相
多层砂岩油藏
特高含水期
三大矛盾
机理
精细结构调整
continental facies
multi-layer sandstone reservoir
ultra-high water cut stage
three major contradictions
mechanism
fine structural adjustment
作者简介
朱丽红,女,1969年5月生,1991年获大庆石油学院学士学位,2006年获吉林大学计算数学专业硕士学位,现为大庆油田有限责任公司勘探开发研究院高级工程师、中国科学院地质与地球物理研究所博士研究生,主要从事油田开发技术和剩余油研究.Email：zhulih@petrochina.com.cn
