复杂地质条件下密度曲线重构在储层预测中的应用  

A Reservoir Prediction Application of Density Curve Reconstruction in Complex Geological Conditions

作　　者：李婷婷[1] 陈井瑞 郭岳 庞心悦 LI Tingting;CHEN Jingrui;GUO Yue;PANG Xinyue(School of Geosciences,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;No.1 Oil Production Plant of Northwest Oilfield Branch of Sinopec,Urumqi,Xinjiang 830011,China;The First Oil Production Company,Daqing Oilfield of CNPC,Daqing,Heilongjiang 163311,China)

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中石化西北油田分公司采油一厂,新疆乌鲁木齐830011 [3]大庆油田第一采油厂,黑龙江大庆163311

出　　处：《中国锰业》2019年第5期19-23,共5页China Manganese Industry

基　　金：国家高技术研究发展计划(2013AA064903)

摘　　要：研究区在构造上位于松辽盆地北部中央坳陷区大庆长垣二级构造带中部的三级构造上,目的层于白垩系下统姚家组地层中,在此区域通过地质统计学反演进行储层预测研究,由于受到研究区复杂地质条件限制,造成密度曲线大量缺失或者质量不好,常用的解决办法是使用经验公式,如Gardner公式进行密度曲线的重构,但应用效果并不理想。针对这一问题,通过多元线性回归的数学方法重构缺失的密度测井曲线。最终通过对比,证明利用多元线性回归密度重构技术预测的储层后验井符合率和平面图符合率有明显提升。该方法在储层预测、岩性敏感性等方面具有显著的应用效果。The study area is structurally located in the middle of the secondary structural belt of Daqing placanticline in the central depression area of Northern Songliao Basin.The target stratum is in the lower Cretaceous Yaojia Formation.Reservoir prediction is carried out through geostatistical inversion in this area.Due to the limitation of complex geological conditions in the study area,a large number of density curves are missing or the quality is not good.Empirical formulas,such as Gardner’s formula,are used to reconstruct density curves,but the results are not satisfactory.To solve this problem,the missing density log curve is reconstructed by the mathematical method of multiple linear regression.Finally,through comparison,it is proved that the coincidence rate of posterior wells and the coincidence rate of planar maps predicted by multiple linear regression density reconstruction technology have been significantly improved.This method has remarkable application effect in reservoir prediction and lithologic sensitivity.

关 键 词：多元线性回归 曲线重构 复杂地质条件 储层预测 

分 类 号：P618.13[天文地球—矿床学]