测井技术2017，Vol.41Issue(3)：331-335,5.DOI:10.16489/j.issn.1004-1338.2017.03.016
元素俘获测井在库车深层致密砂岩中的应用
Applications of Elemental Capture Spectroscopy Log to Sandstone Reservoirs with Deep Layer in Kuqa
摘要
Abstract
Sandstone gas reservoir with deep layer in kuqa depression is characterized by super-low porosity and permeability which has few drill cores, there is some difficulty to evaluate formation with complex lithologies.Quantitative determination of mineral from elemental capture spectroscopy (ECS) logging is used to obtain two parameters:formation lithology and formation matrix, which proposes new avenues for evaluating complicated lithological formations.Firstly, element concentrations are obtained by ECS logging technology.Secondly, mineral content is calculated in formation based on mineral inversion model.Thirdly, mineral content is used to calculate the formation grain density, which will increase the accuracy of the calculation of reserve parameters, like porosity, etc.During the validation process, the available data of 7 wells with deep layer in Kuqa depression are used.And the log interpretation shows calculated formation porosity is accurate.In general, variable formation grain density is calculated based on mineral content.Then, porosity is calculated.And the ECS interpretation porosity results are matched with those of core analysis.The results show that the method for calculating formation porosity is very reliable.The practice shows that logging interpretation of porosity has been done on practical logging data from reservoir with deep layer in Kuqa depression in Tarim oilfield by ECS logging, which has good results.关键词
元素俘获测井/致密砂岩/矿物含量/孔隙度/库车前陆盆地Key words
elemental capture spectroscopy logging/tight sandstone/mineral content/porosity/kuqa depression分类
天文与地球科学引用本文复制引用
康晓楠,肖承文,信毅,周磊,陈强,李晓龙,罗伟平..元素俘获测井在库车深层致密砂岩中的应用[J].测井技术,2017,41(3):331-335,5.基金项目
中国石油股份公司重大专项(二期)课题库车前陆深层油气地质理论与勘探目标评价(2014-2101E) （二期）
