内蒙古海拉尔盆地乌尔逊凹陷现今地温场特征

现代地质 ›› 2011, Vol. 25 ›› Issue (3): 589-593.

内蒙古海拉尔盆地乌尔逊凹陷现今地温场特征

崔军平^1,2，任战利^1,2

1西北大学大陆动力学国家重点实验室,陕西西安710069；2西北大学地质学系,陕西西安710069

出版日期:2011-06-22 发布日期:2011-06-23
作者简介:崔军平，男，博士，讲师，1978年出生，地球探测与信息技术专业，主要从事盆地热演化史与油气成藏研究。 Email：cuijp@nwu.edu.cn。
基金资助:
国家自然科学基金项目(41002040)；高等学校全国博士学位论文作者专项资金项目(200347)

Characteristics of Present Geothermal Field of the Wuerxun Depression in Hailaer Basin, Inner Mongolia

CUI Jun-Beng^{-1, 2} , LIN Zhan-Li^{-1, 2}

Online:2011-06-22 Published:2011-06-23

摘要/Abstract

摘要：

乌尔逊凹陷作为内蒙古海拉尔盆地油气资源最丰富的凹陷之一，其地温场特征尚未进行系统研究。根据5口井系统测温数据和42口井油层测温数据以及实测热导率资料，分析了海拉尔盆地乌尔逊凹陷现今地温场特征。乌尔逊凹陷的现今地温梯度在28～37 ℃/hm之间，平均地温梯度为335 ℃/hm。现今大地热流密度值在422～594 mW/m2 之间，平均大地热流密度值为560 mW/m2，表明乌尔逊凹陷是一个中温型地温场。现今地温梯度和大地热流密度值分布具有北高南低的特点，造成南北差异的原因主要为地下水活动、断裂及火山岩体。现今地温场对油气生成具有明显的控制作用；乌尔逊凹陷为持续埋藏性凹陷，现今地温为烃源岩经历的最高温度；西部地区现今温度最高，铜钵庙组、南屯组、大磨拐河组烃源岩仍处于较高的温度环境中，烃源岩现今仍处于生烃过程中，西部地区是乌尔逊凹陷主要的找油气区。

关键词: 地温梯度；大地热流；控制因素, 海拉尔盆地；乌尔逊凹陷

Abstract:

Wuerxun depression is one of the sags with the most abundant oil and gas resources in Hailer basin, Inner Mongolia, but the characteristics of geothermal field of this depression have not been researched. The characteristics of present geothermal field in Wuerxun depression was analyzed according to the continuous temperature data of 5 wells and reservoir temperatures of 42 wells and heat conductivity data. The present geothermal gradient is 28-37 ℃/hm with average value of 335 ℃/hm; the present heat flow is 422-594 mW/m2 with average value of 560 mW/m2. This result shows that Wuerxun depression has middletemperature field; the present geothermal gradient and heat flow in the north of the depression are higher than those in the south, which are mainly caused by the activity of the ground water and fault and volcanic rock. The present temperature is an important control factor on oilgas generation of source rocks. The Wuerxun depression has undergone continuous burial with increasing temperature, and the present temperature is the maximum temperature that the source rock has experienced; the present temperature in the west is the maximum, which causes the source rocks in Tongbomiao, Nantun and Damoguaihe formations in a high temperature environment, thus the source rocks is still in the stage of oilgas generation now, so the west area is the main oilgas exploration region in the Wuerxun depression.

Key words: geothermal gradient, heat flow, control factor, Hailaer basin, Wuerxun depression

崔军平, 任战利. 内蒙古海拉尔盆地乌尔逊凹陷现今地温场特征[J]. 现代地质, 2011, 25(3): 589-593.

CUI Jun-Beng-1, 2 , LIN Zhan-Li-1, 2. Characteristics of Present Geothermal Field of the Wuerxun Depression in Hailaer Basin, Inner Mongolia[J]. Geoscience, 2011, 25(3): 589-593.

参考文献

［1］周江羽,吴冲龙,韩志军鄂尔多斯盆地的地热场特征与有机质成熟史\
[J\].石油实验地质,1998,20（1）:20-24.
［2］袁彩萍,徐思煌.西藏伦破拉盆地地温场特征及烃源岩热演化史\
[J\].石油实验地质,2000,22（2）:156-160.
\
[3\]张世焕,任战利,马团校,等.吐鲁番—哈密盆地现今地温与油气关系研究\
[J\].地质科学,2000,35（4）:432-440.
\
[4\]王永新,冯殿生,汪集旸.辽河盆地东部凹陷现今地温场及热历史的研究\
[J\].地球物理学报,2003,46（2）:197-202.
\
[5\]邱楠生,魏刚,李翠翠,等.渤海海域现今地温场分布特征\
[J\].石油与天然气地质,2009,30（4）:412-419.
\
[6\]程本合,徐亮,项希勇,等.济阳坳陷沾化东区块现今地温场及热历史\
[J\].地球物理学报, 2001,44（2）: 238-243.
\
[7\]李亚军,李儒峰.苏北盆地高邮凹陷现今地温场特征\
[J\].现代地质,2010,24（6）:1042-1047.
\
[8\]刘树根.内蒙古海拉尔盆地演化研究\
[J\].成都地质学院学报, 1993,13（4）:80-87.
\
[9\]陈均亮,吴河勇,朱德丰,等.海拉尔盆地构造演化及油气勘探前景\
[J\].地质科学,2007,42（1）:147-159.
\
[10\]冯乔,柳益群,张小莉,等.叠合盆地的热演化史与油气生成——以吐鲁番—哈密盆地南部构造带为例\
[J\].石油与天然气地质,2004,25（3）:268-293.
\
[11\]任战利,刘池阳,张小会,等.酒东盆地热演化史与油气关系研究\
[J\].沉积学报,2000,18（4）:619-623.
\
[12\]任战利.鄂尔多斯盆地热演化史与油气关系的研究\
[J\].石油学报,1996,17（1）:17-24.
\
[13\]吴乾蕃,谢毅真.松辽盆地大地热流\
[J\].地震地质,1985,7（2）:59-64.
\
[14\]任战利.中国北方沉积盆地构造热演化史研究\
[M\].北京:石油工业出版社,1999：16-20.
\
[15\]王钧,黄尚瑶,黄歌山,等.中国地温分布的基本特征\
[M\].北京:地震出版社,1990：1-30.
\
[16\]王良书,李成,刘绍文,等.库车前陆盆地大地热流分布特征\
[J\].石油勘探与开发,2005,32（4）:79-83.