石油化工高等学校学报2016，Vol.29Issue(6)：72-78,7.DOI:10.3969/j.issn.1006-396X.2016.06.015
海拉尔盆地塔南凹陷源岩精细评价
Fine Evaluation of Source Rocks in Tanan Sag of Hailaer Basin
摘要
Abstract
In this paper,Total Organic Carbon (TOC)of source rocks in Nanyi section of Tanan sag was calculated using Variable-Coefficient ΔlgR model based on the classification evaluation of source rocks,and the volume ratio and plane distribution of source rocks at different TOC levels were discribed.Source rocks in Tanan sag were characterized by high natural gamma and interval transit time,but unlike the marine sources rokcs,the response of resistivity curve was weak. Therefore,using the Variable-CoefficientΔlgR model,taking the key coefficient in the model as variable and calculating the key coefficient in the model using the sampled data,the low accuracy resulted by the empirical parameter inΔlgR model was overcome.The results showed that TOC predicting error by variable-coefficientΔlgR models was 19.7%,which reduced about 11.4% compared toΔlgR model.According to the relationship between TOC and Hydrogen index(IH),sources rocks in Nanyi section were divided into three grades,including poor source rocks ,medium source rocks and excellent source rocks.According to TOC calculating results,the volume ratio and the plane distribution for each grade of source rocks were studied.Poor source rocks accounted for 21.5% of total source rocks in volume,and the general depth was 10~20 m.Medium source rocks accounted for 31.6%,and the general depth was 15~25 m.Excellent sources rocks accounted for 46.9%,and the general depth was 20~30 m.关键词
测井/烃源岩/有机碳/ΔlgR/塔南凹陷/塔木察格盆地Key words
Well logging/Source rocks/TOC/ΔlgR/Tanan sag/Hailaer Basin分类
能源科技引用本文复制引用
胡帮举..海拉尔盆地塔南凹陷源岩精细评价[J].石油化工高等学校学报,2016,29(6):72-78,7.基金项目
国家重点基础研究发展计划("973"计划)项目(2006CB701403). （"973"计划）
