Researches on the reinjection of Dongli Lake bedrock reservoir in Binhai New Area, Tianjin

RUAN Chuanxia; SHEN Jian; LI Liliang; LIU Rongguang; MOU Shuangxi

2017 Vol. 36, No. 8

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RUAN Chuanxia, SHEN Jian, LI Liliang, LIU Rongguang, MOU Shuangxi. Researches on the reinjection of Dongli Lake bedrock reservoir in Binhai New Area, Tianjin[J]. Geological Bulletin of China, 2017, 36(8): 1439-1449.

Citation:

RUAN Chuanxia, SHEN Jian, LI Liliang, LIU Rongguang, MOU Shuangxi. Researches on the reinjection of Dongli Lake bedrock reservoir in Binhai New Area, Tianjin[J]. Geological Bulletin of China, 2017, 36(8): 1439-1449.

Researches on the reinjection of Dongli Lake bedrock reservoir in Binhai New Area, Tianjin

1.
School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China
2.
Tianjin Geothermal Exploration and Development Designing Institute, Tianjin 300250, China

Received Date: 09 October 2016

Revised Date: 09 November 2016

Publish Date: 25 August 2017

Abstract

Abstract

The Wumishan Formation is the main development and utilization reservoir in the Donglihu district of Binhai New Ar-ea, Tianjin. There are 11 geothermal wells, and static level falls by the depth of 3m annaully due to the concentrated development and utilization. For the purpose of alleviating water level falling, geothermal fluid waste water has been used for reinjection; never-theless, the falling of the water level remains relatively fast. The Dongli Lake area is rich in surface water, the treated lake water is used for reinjection to increase the amount of reinjection in rich water period, and the concentrated reinjection system has been built in this area. A reinjection well was digged to carry out reinjection test and the largest reinjection of the well is 152m³/h. TOUGH2.0 software is adopted to establish the numerical model in the study area and simulate dynamic field and temperature field characteristics of two kinds of reinjection mode under the condition of the heating period and non-heating period. Reinjection rate is 30×10⁴m³/a in the heating period averagely for 120 days, the reinjection water temperature is 20℃ and the natural reinjection modde is adopted. The reinjection rate is 40×10⁴m³/a in the non-heating period for averagely 120 days, the reinjection water tem-perature is 20℃ and the natural recharge mode is adopted. This paper forecasts the dynamic field and temperature field characteris-tics of the study area under the conditions of the absence of lake water reinjection and the existence of water injection for 1 year and 5 years. The results show that increasing lake water reinjection can reduce heat reservoir pressure dropping rate and has no sig-nificant influence on the temperature field.
- Tianjin /
- geothermal resources /
- reinjection /
- simulation and predication

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References

[1]	Gudni A, Grimur B, Olafur G F, et al. Injection Experiments in Low-temperature Geothermal Area in Iceland[M]. Proceedings of World Geothermal Congress, 1995:1991-1996. Google Scholar
[2]	张远东, 魏加华.冰岛Laugaland地热田示踪试验与回灌温度模拟[J].中国科学院研究生院学报, 2005, (6):761-765. Google Scholar
[3]	刘久荣.地热回灌的发展现状[J].水文地质工程地质, 2003, (3):100-105. Google Scholar
[4]	孙宝成, 曾梅香, 林黎等.天津地热对井回灌系统中的同位素示踪技术[J].地质调查与研究, 2005, 28(3):187-191. Google Scholar
[5]	林建旺, 刘晓满, 高宝珠等.天津地热回灌试验分析及存在问题[J].河南理工大学学报, 2006, 25(3):200-204. Google Scholar
[6]	王连成, 沈健, 程万庆等.天津市地热集中开采区蓟县系雾迷山组热储回灌布局探析[J].土地市场, 2012, 25(3):52-57. Google Scholar
[7]	曾梅香, 阮传侠, 赵越波等.岩溶裂隙热储层采、灌井井间连通试验研究——以天津市王兰庄地热田回灌井HX-25B示踪测试为例[J].地质与勘探, 2008, 44(2):105-109. Google Scholar
[8]	王坤, 朱家玲.天津基岩热储对井系统回灌与示踪剂试验研究[J].太阳能学报, 2003, 24(2):162-166. Google Scholar
[9]	王贵玲, 刘志明, 刘庆宣等.西安地热田地热弃水回灌数值模拟研究[J].地球学报, 2002, 23(2):183-188. Google Scholar
[10]	朱家玲.地热能开发与应用技术[M].北京:化学工业出版社, 2006:99-111. Google Scholar