成都理工大学学报（自然科学版）2026，Vol.53Issue(3)：584-596,13.DOI:10.12474/cdlgzrkx.2025072203
珠江口盆地珠一坳陷地温场特征与主控因素分析
The characteristics of the geothermal field and main controlling factors of the Zhu I Depression in the Pearl River Mouth Basin
摘要
Abstract
Studying geothermal fields provides information related to hydrocarbon generation,petroleum entrapment,and resource assessment.As a core area for crude oil exploration in the Pearl River Mouth Basin,studies of the current geothermal field and its main controlling factors in the Zhu I Depression hold significant importance.To conduct such an in-depth study,we adopted a method that combines multidimensional data collection and analysis.Based on 204 borehole temperature measurements and more than 211 thermal physical parameters,we studied the current geothermal gradient and heat flow,regional geological characteristics,and distribution characteristics of the Zhu I Depression.The results show that the geothermal gradient of the Zhu I Depression is mainly between 27-40℃/km,with an average of(33±2)℃/km;the rock thermal conductivity is between 1.0 and 3.0 W/(m·k),with an average of 2.61 W/(m·k);and the current heat flow is between 55 to 75 mW/m2,with an average of 64 mW/m2.Our research indicates that the geothermal gradient of the Zhu I Depression is higher in the east and lower in the west,high in the north and low in the south,and high in uplift areas and low in depression areas.There are certain differences in geothermal gradients between different depressions,among which the geothermal gradient of the main Xijiang Sag is the lowest.The different distributions of terrestrial heat flow are coupled with the geothermal gradient.These new data confirm that the Zhu I Depression has a relatively high heat flow,which is higher than those measured in western China,such as the Tarim Basin and Junggar Basin;however,it is lower than that of the northern South China Sea,such as the Yinggehai Basin and Qiongdongnan Basin.The distribution characteristics of the current geothermal field in the Zhu I Depression are mainly controlled by the deep lithospheric thermal structure,faults,magmatic rock distribution,and its thermal and physical parameters.This study effectively promotes deep oil and gas exploration in the Zhu-1 Depression,facilitating future work related to hydrocarbon source rock maturity evaluation and favorable oil-gas reservoir formation area predictions,and provides a scientific basis for the exploration and development of oil and gas resources in the Pearl River Mouth Basin.关键词
珠江口盆地/珠一坳陷/地温梯度/热导率/大地热流Key words
Pearl River Mouth Basin/Zhu I Depression/geothermal gradient/thermal conductivity/heat flows分类
天文与地球科学引用本文复制引用
黄玉平,龙祖烈,石创,史玉玲,张小龙,胡杰,郑立庆,蔡俊杰..珠江口盆地珠一坳陷地温场特征与主控因素分析[J].成都理工大学学报（自然科学版）,2026,53(3):584-596,13.基金项目
"十四五"全国油气资源评价项目(QGYQZYPJ2022-3) （QGYQZYPJ2022-3）
中海石油(中国)有限公司深圳分公司重大生产性科研项目(SCKY-2025-SZ-YJYKT-03) （中国）
国家自然科学基金(42302342). （42302342）
