涠洲11-1油田角尾组可动水分布研究  

Study on Movable Water Distribution of Jiaowei Formation in Weizhou 11-1 Oilfield

作　　者：魏峰 WEI Feng(CNOOC Hainan Branch,Haikou Hainan 570312,China)

机构地区：[1]中海石油(中国)有限公司海南分公司,海南海口570312

出　　处：《辽宁化工》2021年第10期1541-1544,1547,共5页Liaoning Chemical Industry

摘　　要：涠洲11-1油田角尾组纵向上储层物性差异大,下部为物性较好、电阻率较高的高阻油层,上部为物性相对较差、电阻率较低的低阻层。低阻层含油饱和度低,含有可动水,生产井初期含水30%以上。为实现对油藏原始可动水精确表征,从而研究剩余油分布,为油藏下步挖潜指示方向,在文献调研基础上,利用J函数建立含水饱和度模型,同时利用岩心回归公式、经验公式和J函数三种方法计算油藏束缚水饱和度,在与岩心分析束缚水饱和度进行对比基础上,选取J函数计算束缚水模型,进而建立油藏可动水饱和度模型。利用可动水模型开展油藏数值模拟,实现了单井及油藏生产数据的高精度拟合,表明该方法计算的可动水饱和度具有较好的可靠性。The reservoir physical properties of Jiaowei formation in Weizhou 11-1 Oilfield are quite different vertically.The lower part is a high-resistance oil layer with good physical properties and high resistivity,and the upper part is a low-resistance layer with relatively poor physical properties and low resistivity.The oil saturation of the low resistivity reservoir is low,containing movable water,while the initial water cut of production well is more than 30%.In order to accurately characterize the original movable water of the reservoir to study the distribution of remaining oil and indicate the direction for further exploiting the potential of the reservoir,J function was used to establish the water saturation model,and the core regression formula,empirical formula and J function were used to compute the irreducible water saturation of the reservoir.Based on the comparison with the irreducible water saturation of the core analysis data,the J function method was selected to calculate the irreducible water model,and then movable water saturation model of the reservoir was established.Reservoir numerical simulation was carried out by established model,the high precision fitting of single well and reservoir production data was realized,which proved that the movable water saturation calculated by this method had high reliability.

关 键 词：角尾组油藏 可动水模型 束缚水饱和度 J函数 

分 类 号：TE357[石油与天然气工程—油气田开发工程]