松辽盆地现今地温场分布特征及主控因素  

The distribution characteristics and main controlling factors of present-day geothermal regime of the Songliao basin

作　　者：刘雨晨 柳波 朱焕来[1] 林铁锋[3] 霍秋立[3] 邢济麟[4] 杜先利 付健[1] 闫斌[5] 毕然 李思其 LIU Yuchen;LIU Bo;ZHU Huanlai;LIN Tiefeng;HUO Qiuli;XING Jilin;DU Xianli;FU Jian;YAN Bin;BI Ran;LI Siqi(School of Geosciences,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;Institute of Unconventional Oil and Gas,Northeast Petroleum University,Daqing,Heilongjiang 163318,China;Exploration and Development Research Institute of Daqing Oilfield Co Ltd.,Daqing,Heilongjiang 163712,China;PetroChina Jilin Oilfield Company,China National Petroleum Corporation,Songyuan,Jilin 138000,China;Downhole Operation Com pany of Daqing Oilfield,Daqing,Heilongjiang 163000,China)

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]东北石油大学非常规油气研究院,黑龙江大庆163318 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [4]中国石油吉林油田公司,吉林松原138000 [5]大庆油田井下作业分公司,黑龙江大庆163000

出　　处：《地质学报》2023年第8期2715-2727,共13页Acta Geologica Sinica

基　　金：黑龙江省自然科学基金研究团队项目(编号TD2021D001);黑龙江博士后面上项目(编号LBH-Z20007);中国博士后科研基金项目(编号2021M700754)联合资助的成果。

摘　　要：松辽盆地不仅是世界上已发现油气资源最为丰富的陆相沉积盆地之一,同时也存在十分丰富的中低温地热资源,是当前油气勘探和地热勘探的主力区块。本文结合近10年来新增的一大批测温数据,借助571口钻井地层测温资料和150余个岩石热物性参数,重新剖析了松辽盆地现今地温场分布特征及其主控因素。研究表明,松辽盆地地温梯度在19~55℃/km之间,平均为41.4℃/km,现今大地热流分布在38.9~111.2 mW/m^(2)之间,平均为78.9 mW/m^(2)。相比其他盆地而言,松辽盆地具有高温“热盆”的特点。平面上,盆地中央坳陷区地温梯度和大地热流均较高。嫩江组底界面温度约为15~88℃,平均为48.6℃;姚家组底界面的温度为18~95℃,平均值为53℃;青山口组底界面的温度为25~128℃,平均值为64℃;泉四段底界面的温度为26~131℃,平均值为67℃。松辽盆地现今温度分布主要受到成盆演化动力学背景、岩石热物性特征、岩浆作用等多种因素的影响。松辽盆地经历了强烈的区域伸展作用和岩石圈减薄,并发育丰富的基底断裂和地壳断裂,造成深部地幔热物质沿着基底断裂运移至浅部,因此地表热流偏高。The Songliao basin is not only one of the continental sedimentary basins with the richest oil and gas resources discovered in the world,but also rich in medium and low temperature geothermal resources.It is the main block of current oil and gas exploration and geothermal exploration.Based on a large number of newly added temperature measurement data in the past 10 years,and basedon 571 borehole temperature measurement data and more than 150 thermal physical parameters,we studied the current geothermal gradient and geothermal distribution characteristics of the Songliao basin.The results showed that the geothermal gradient of the Songliao basin is between 19~55℃/km,with an average of 41.4℃/km,and the current earth heat flow is between 38.9~111.2 mW/m 2,with an average of 78.9 mW/m 2.These new data confirm that the Songliao basin has a relatively high heat flow and shares similar geothermal regime with other Meso-Cenozoic rift basins in the world.Both the geothermal gradient and heat flow in the central part of the basin are high.The temperature of the bottom interface of the Nenjiang Formation is about 15~88℃,with an average of 48.6℃;the temperature of the bottom interface of the Yaojia Formation is 18~95℃,with an average of 53℃;the temperature of the bottom interface of the Qingshankou Formation is 25~128℃,with an average of 64℃;the temperature of the bottom interface of the fourth section of the Quantou Formation is 26~131℃,with an average value of 67℃.In addition,the main controlling factors of temperature distribution in the Songliao basin were analyzed.The current temperature distribution is mainly affected by many factors such as the dynamic background of basin formation,rock thermophysical properties,and magmatism.The Songliao basin has experienced strong regional extension and lithosphere thinning,and developed abundant basement faults and crustal faults.The deep mantle hot material migrated to the shallow part along the basement fault,resulting in high surface heat flow.

关 键 词：热流 地层温度 地温梯度 主控因素 松辽盆地 

分 类 号：P618.13[天文地球—矿床学] P314[天文地球—地质学]