普图马约盆地Neme段特稠油储层含油饱和度评价方法  

OIL SATURATION EVALUATION METHOD OF NEME EXTREMELY VISCOUS CRUDE RESERVOIR IN PUTUMAYO BASIN

作　　者：任怀建[1] 杨振武[1] 卢小新[1] 马莎[1] 

机构地区：[1]中化石油勘探开发有限公司,北京100031

出　　处：《新疆石油天然气》2017年第2期6-9,共4页Xinjiang Oil & Gas

摘　　要：结合岩心分析、测试和测井曲线特征开展岩石物理研究,确定Neme段特稠油储层地层水包括高矿化度束缚水和低矿化度自由水的格局。选取油藏低部位的典型水层,在岩电实验分析确定的岩电参数的基础上,应用Pickett交会图法确定地层水矿化度。应用核磁共振测井、常规中子和密度测井资料计算水层的束缚水饱和度和残余油饱和度,采用地层测试分析自由水矿化度,并以岩石体积模型为依据,估算普图马约盆地Neme段储层束缚水矿化度。针对地层水矿化度受束缚水和自由水矿化度、体积比共同影响的特点,研究应用最优化方法计算含油饱和度,与岩心分析含油饱和度结果吻合。Studied petrophysics of Neme formation based on core analysis, test and wireline logs characteristics, and confirmsed two different salinity water in Neme formation, which are high salinity irreducible water and low salinity free water. Determined rock-electric parameters with core analysis, and evaluated formation water salinity using Pickett plot with typical water zone in low position of reservoir. Evaluated irreducible water saturation and residual oil saturation using Nuclear Magnetic Resonance(NMR) and conventional porosity logs. Base on salinity of free water from test, and salinity of formation water from Pickett plot, determined irreducible water salinity using rock bulk volume model. Focusing on formation water salinity, which are affected by salinity and volume ratio of irreducible water and free water, researched on oil saturation evaluation with optimization methods. The oil saturation evaluation result is coincident with core analysis.

关 键 词：特稠油 矿化度 束缚水 最优化方法 含油饱和度 

分 类 号：TE122.23[石油与天然气工程—油气勘探]