摘要：The Ordovician carbonate reservoirs in the Tarim Basin are hotspots for oil and gas exploration in recent years. However, due to the lack of effective paleo-geothermometers in carbonate formations, thermal history studies have been greatly restricted. Clumped isotope, as a new effective thermal indicator, provides the possibility for thermal history reconstruction of carbonate formations. In this study, by testing the clumped isotopes of different components in the Ordovician carbonate reservoirs in Shuntuoguole area of the Tarim Basin, the thermal histories of different tectonic units in Shuntuoguole area were reconstructed. The average isotope temperature (TΔ47) of the micrites in the Shunbei, Shuntuo and Shunnan areas are 92.34 ℃, 124.35 ℃ and 170.27 ℃, respectively. Except for the SN501 well and the SN4 well in the Shunnan area, all other samples have not reached full thermal equilibrium at the highest burial temperature and can be used for thermal history reconstruction. By setting different thermal history paths for typical single wells in the Shuntuoguole area, the upper limit of the maximum temperature is determined to be 170~190 ℃. In addition, the abnormal high temperature of the Permian may be the result of the combination of erosion and magmatic activity events. The Permian geothermal gradient in the Shuntuoguole area ranges from 26.75 ℃/km to 46.28 ℃/km, showing a trend of high northeast and low southeast. The spatial variation of the geothermal gradient suggests that the magma activity center may be located near the Tabei area, and the thermal response caused by magmatic activity may terminate near the SN3 well.
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ISSN号：0001-5733

卷、期、页：v 63,n 2,p597-611

发表日期：2020-02-01

影响因子：0.811100

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：Acta Geophysica Sinica

参与作者：李慧莉,马安来

通讯作者：刘雨晨,贾京坤

第一作者：邱楠生,常健

论文类型：期刊论文

论文概要：刘雨晨,邱楠生,常健,贾京坤,李慧莉,马安来，Application of clumped isotope thermometry to thermal evolution of sedimentary basins: A case study of Shuntuoguole area in Tarim Basin，Acta Geophysica Sinica，2020，v 63,n 2,p597-611

论文题目：Application of clumped isotope thermometry to thermal evolution of sedimentary basins: A case study of Shuntuoguole area in Tarim Basin