海相油气地质2017，Vol.22Issue(2)：1-7,7.DOI:10.3969/j.issn.1672-9854.2017.02.001
二元同位素测温技术 及其在白云岩储层成因研究中的应用 ——以塔里木盆地中下寒武统为例
Clumped Isotope Thermometry and Its Application in Dolomite Reservoir: A Case Study of the Middle-Lower Cambrian in Traim Basin
摘要
Abstract
The technology of clumped isotope(D47) thermometry has been applied in the study of the diagenetic environment of carbonate rock as a new experimental technique in recent years. The paper introduces the principle and application method of the clumped istope thermometry. Taking the middle-lower Cambrian dolomites in Tarim Basin as an example, 11 samples were chosen to test D47 value and carbon and oxygen isotope of dolomites, and further, to calculate the diagenetic temperature and δ18O of paleofluids. According to the comprehensive analysis, the diagenetic environment of different types of dolomites is different, and the diagenetic fluid is different too. The granular dolomite formed in low-temperature penecontemporaneous-shallow buried environment, and the diagenetic fluid is seawater. The fine-grained dolomite is formed in the deep-buried diagenetic environment, and the original rock is subjected to high-temperature recrystal ization, and the diagenetic fluid is underground thermal brine. The dolomite cements in the pores or fractures are the products of the precipitation of Mg-rich thermal brine in a deep-buried diagenetic environment. It is proved that the clumped isotope thermometry can obtain the diagenetic temperature of dolomite more effectively and reduce the multi-solution of reservoir genesis, which provides a new means and basis for the future study of reservoir genesis.关键词
二元同位素/D47/测温技术/成岩环境/白云岩储层/塔里木盆地Key words
Clumped isotope/D47/Thermometry technology/Diagenetic environment/Dolomite reservoir/Tarim Basin分类
能源科技引用本文复制引用
郑剑锋,李晋,季汉成,黄理力,胡安平,马明璇..二元同位素测温技术 及其在白云岩储层成因研究中的应用 ——以塔里木盆地中下寒武统为例[J].海相油气地质,2017,22(2):1-7,7.基金项目
本文受国家重大科技专项"大型油气田及煤层气开发"(2016ZX05004002)和中国石油天然气股份有限公司重大科技专项"深层油气勘探开发关键技术研究"(2014E-32)联合资助 （2016ZX05004002）
