北京迭断陷内蓟县系热储层温度分布特征

doi:10.13278/j.cnki.jjuese.201701204

吉林大学学报(地球科学版) ›› 2017, Vol. 47 ›› Issue (1): 179-188.doi: 10.13278/j.cnki.jjuese.201701204

北京迭断陷内蓟县系热储层温度分布特征

袁利娟¹, 杨峰田²

1. 北京市地热研究院, 北京 100143;
2. 吉林大学环境与资源学院, 长春 130021

收稿日期:2016-05-17 出版日期:2017-01-26 发布日期:2017-01-26
作者简介:袁利娟(1985),女,博士,主要从事地热地质方面的研究,E-mail:yuanlijuan2010@163.com
基金资助:
北京市财政项目（PXM2016_158307_000013）；国家自然科学基金青年科学基金项目（41202167）

Temperature Distribution Characteristic of Jixian Reservoir in Beijing Depression

Yuan Lijuan¹, Yang Fengtian²

1. Beijng Geothermal Research Institute, Beijing 100143, China;
2. College of Environment and Resources, Jilin University, Changchun 130021, China

Received:2016-05-17 Online:2017-01-26 Published:2017-01-26
Supported by:
Supported by Beijing Municipal Finance Projects (PXM2016_158307_000013) and Youth Fund of National Natural Science Foundation of China (41202167)

摘要/Abstract

摘要： 为了掌握北京市典型地区热储层的温度分布特征,为北京地区地热地质研究工作补充数据,搜集了地热开发工作开展较早的北京城区内37口地热井的位置、井深、出水温度、水化学等数据,利用Na-K-Mg图解法评价了地热水的水-岩平衡状态,通过阳离子和SiO₂地温计估算了热储温度,分析了北京迭断陷内蓟县系热储层温度垂向分布特征。结果表明：1）37个样品中的35个样品均未达到水-岩平衡,而地热水中SiO₂的溶解受控于石英。2）蓟县系1 000~4 000 m深度范围内热储温度分布在65.6~110.0℃范围内,且在垂向上表现出受储层内部地质沉积差异控制的特点：1 000~2 000 m,蓟县系沉积特征变化大,热储温度在垂向上无明显变化规律；2 000 m以下,储层温度表现出随深度增加而增加的趋势,地温梯度约为3.1℃/hm。

关键词: 北京迭断陷, 蓟县系热储层, 地温计, 储层温度, 分布特征

Abstract: In order to find out reservoir temperature distribution of geothermal reservoir in Beijing, aiming to complement the geothermal research of Beijing, data of 37 geothermal water samples from Beijing downtown, where has a relatively long development history of geothermal resources, including position, depth, temperature and chemistry, have been collected. Water-rock equilibrium state of the geothermal water is evaluated by the Na-K-Mg geothermometry, and Jixian Formation reservoir temperatures in the Beijing depression are calculated by using ion and SiO₂ geothermometry. Vertical characteristics of reservoir temperature in the Jixian Formation are also analyzed. The results show that 35 out of 37 samples have not reached equilibrium, and the content of dissolved SiO₂ is controlled by quartz in the geothermal water. Reservoir temperature of the Jianxian Formation within depth of 1 000-4 000 m ranges from 65.6-110.0℃, and its vertical variation is governed by difference of sedimentation. From 0 to 2 000 m, no obvious trend can be observed due to the drastic change in sedimentation; below 2 000 m, reservoir temperature increases with depth, and the geothermal gradient is 3.1℃/hm.

Key words: Beijing depression, Jixian reservior, geothermometry, reservoir temperature, distribution character

中图分类号:

P632

袁利娟, 杨峰田. 北京迭断陷内蓟县系热储层温度分布特征[J]. 吉林大学学报(地球科学版), 2017, 47(1): 179-188.

Yuan Lijuan, Yang Fengtian. Temperature Distribution Characteristic of Jixian Reservoir in Beijing Depression[J]. Journal of Jilin University(Earth Science Edition), 2017, 47(1): 179-188.

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北京迭断陷内蓟县系热储层温度分布特征

Temperature Distribution Characteristic of Jixian Reservoir in Beijing Depression

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