三维定量荧光录井原油密度定量计算方法与应用——以珠江口盆地珠一坳陷为例  

Quantitative calculation method of crude oil density based on 3D fluorescence logging technology and its application:A case study of Zhu I Depression,Pearl River Mouth Basin

作　　者：熊亭 叶丹阳 蒋钱涛 张伟 孙本飞 XIONG Ting;YE Danyang;JIANG Qiantao;ZHANG Wei;SUN Benfei(CNOOC China Limited Shenzhen Company,Shenzhen 518000,China;China France BohaiGeoservices Co.,Ltd.,Shenzhen 518000,China;COSL Oilfield Technology Division Shenzhen Operation Company,Huizhou,Guangdong 516000,China;Beijing Yongshengtong Technology Development Co.,Ltd.,Beijing 100022,China)

机构地区：[1]中海石油(中国)有限公司深圳分公司 [2]中法渤海地质服务有限公司深圳分公司 [3]中海油服油田技术事业部深圳作业公司 [4]北京永盛通科技发展有限公司

出　　处：《录井工程》2025年第1期70-76,共7页Mud Logging Engineering

基　　金：中国海洋石油有限公司“十四五”重大科技项目“海上深层/超深层油气勘探技术”(编号:KJGG2022⁃0405)。

摘　　要：原油密度的快速、准确预测可以直接支撑随钻过程中储量计算、指导作业方案制定及勘探决策部署。珠江口盆地珠一坳陷的油藏埋深、烃源热演化及运移保存条件不同,导致区域内原油密度差异较大,在作业现场无法实现原油密度的定量预测,给勘探作业决策及开发生产方案制定带来了一系列挑战。以三维定量荧光谱图和实验室原油密度资料为基础,结合区域油质定性划分标准,采用谱图分割的方法,确定不同油质组分占比,并与实验室原油密度进行相关性分析,构建了基于三维定量荧光录井资料的原油密度计算模型,实现了随钻过程中原油密度的实时、定量预测。在珠一坳陷不同靶区的9口井开展原油密度定量预测,其结果与实测原油密度相对误差不超过2%,表明该方法具备较好的推广应用前景。Rapid and accurate prediction of crude oil density can directly support reserve calculation,operation plan formulation guidance,and exploration decisionmaking during the drilling process.Differences in reservoir bury depth,thermal evolution of hydrocarbon sources,and migration preservation conditions in the Zhu I Depression in the Pearl River Mouth Basin lead to large differences in crude oil density.Therefore,quantitative prediction of crude oil density cannot be achieved on the operation site,which brings a series of challenges to exploration operation and production plan decisionmaking.Based on the 3D quantitative fluorescence spectrum and laboratory crude oil density,combined with the regional oil qualitative classification standards,this paper uses the spectrum segmentation method to determine the proportion of different oil components.Then,correlation analysis is carried out with the crude oil density in the laboratory,and a quantitative calculation model of crude oil density based on 3D quantitative fluorescence logging data is constructed,which finally realizes realtime and quantitative prediction of crude oil density during the drilling process.Quantitative prediction of crude oil density is carried out in 9 wells in different target areas of the Zhu I Depression and finds that the relative error rate of crude oil density between the prediction and the measured results dose not exceed 2%,confirming that this method has good application prospects.

关 键 词：三维定量荧光 原油密度 珠一坳陷 谱图分割 

分 类 号：TE132.1[石油与天然气工程—油气勘探]