| 南海北部琼东南盆地岩石热物性特征 |
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| 引用本文： | 蔡黎,李香兰,刘绍文,朱继田,熊小峰,李旭东,尹宏伟.南海北部琼东南盆地岩石热物性特征[J].高校地质学报,2019,25(4):538. |
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| 作者姓名： | 蔡黎 李香兰 刘绍文 朱继田 熊小峰 李旭东 尹宏伟 |
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| 作者单位： | 海岸与海岛开发教育部重点实验室,南京大学地理与海洋科学学院,南京210023;海岸与海岛开发教育部重点实验室,南京大学地理与海洋科学学院,南京210023;中国南海研究协同创新中心,南京210093;中海石油(中国)有限公司湛江分公司,湛江,524057;南京大学地球科学与工程学院,南京,210023 |
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| 摘 要： | 岩石热物性是盆地模拟和预测深部温度时不可或缺的参数。琼东南盆地是当前我国海洋油气资源勘探开发的重点区
块，揭示该盆地的热状态和烃源岩热演化历史均离不开真实可靠的岩石热物性参数。前人虽然对南海北部地区的岩石热物
性开展过相关研究，仍存在实测数据偏少、代表性不足和相互矛盾等问题，亟需新增一批新的实测数据来弥补该区基础地
热参数的不足。文章对采自琼东南盆地19口钻孔的32块岩心样品开展了热导率、生热率以及密度和孔隙度等物性参数测
试，揭示了它们的空间展布特征、相互关系及其主控因素，建立了琼东南盆地新生界地层平均热导率和生热率，据此估算
出盆地沉积物的放射性生热贡献约占地表热流的33%。这些实测的岩石热物性参数为南海北部海域沉积盆地的盆地模拟和
地热相关研究提供了坚实的基础数据。
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| 关 键 词： | 热导率 生热率 热物性 琼东南盆地 南海 |
Thermal Properties Characterization of the Rocks in the Qiongdongnan Basin,Northern Margin of the South China Sea |
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| CAI Li,LI Xianglan,LIU Shaowen,ZHU Jitian,XIONG Xiaofeng,LI Xudong,YIN Hongwei.Thermal Properties Characterization of the Rocks in the Qiongdongnan Basin,Northern Margin of the South China Sea[J].Geological Journal of China Universities,2019,25(4):538. |
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| Authors: | CAI Li LI Xianglan LIU Shaowen ZHU Jitian XIONG Xiaofeng LI Xudong YIN Hongwei |
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| Abstract: | Data regarding thermal properties of sedimentary rocks are fundamental for basin modelling and deep temperature
prediction of sedimentary basins. The Qiongdongnan Basin, located at the northern margin of the South China Sea, currently is the key
area of the offshore hydrocarbon exploration in China. Reliable rock thermal properties are necessary for understanding the thermal
regime and thermal evolution of source rocks of the Qiongdongnan Basin. Although previous studies of rocks thermal properties have
been carried out for this area, there still exist such problems as limited measured data, under-representation and even controversies,
and it is emergent to retrieve some new measured data to fill this gap. In this study, 32 core samples of 19 boreholes were collected from
the Qiongdongnan Basin, and a systemic measurement of the thermal properties, i.e., thermal conductivity, radioactive heat production,
these thermal properties are presented. Integrating previous thermal properties with our new data, the average thermal conductivity and
radioactive heat production of the Cenozoic formation in the Qiongdongnan Basin are established. The radioactive heat contribution of
sediments within the basin account for nearly 33% of observed present-day heat flow. These measured data could provide a benchmark
for basin modelling and geothermal regime in the sedimentary basins of the northern South China Sea. |
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| Keywords: | thermal conductivity radioactive heat production thermal properties Qiongdongnan Basin South China Sea |
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