article

Mercury Concentration in Coalbed Methane in South of Qinshui Basin

Expand
  • 1.Langfang Branch,Research Institute of Petroleum Exploration and Development,Langfang 065007,China;
    2.Department of Geochemistry,Yangtze University,Jingzhou 434023,China

Received date: 2009-09-11

  Revised date: 2010-01-05

  Online published: 2010-12-10

Abstract

With increasing demand of natural gas in our country,coalbed methane as a kind of new energy sources is becoming more and more important.But it should be paid accention on mercury concentration in of natural gas.According to hypothesis of mercury origin in natural gas,mercury concentration in coalbed methane in the south of Qinshui basin would be high.To test it,we use the ultra mercury detector of UT 3000 made in Germany Mercury Instruments to detect mercury concentration in 7 coalbed methane wells and a LNG plant.The result showed that there was very low concentration of mercury in coalbed methane,less than 10ng/m3.So,it is safety for exploiting and developing coalbed methane.We did the experiment of coal flour thermally absorbed and released mercury to explain this phenomenon.The result showed that coal flour absorbed mercury when heating temperature is below 100℃; in contrast the coal flour released mercury when the temperature is more than 120℃.So the balance of absorbing and releasing mercury for cola flour is among 100℃ and 120℃.In the south of Qinshui basin,the burial depth of coal bed is relatively shallow,and the geo-temperature is generally less than 56℃.In the condition of low get-temperature,mercury was strongly absorbed by organic matter in coal measure,resulting in the low mercury concentration in coalbed methane.

Cite this article

HAN Zhong-Xi, YAN Qi-Tuan, LI Jian, GE Shou-Guo, GOU Yan-Xia . Mercury Concentration in Coalbed Methane in South of Qinshui Basin[J]. Natural Gas Geoscience, 2010 , 21(6) : 1054 -1056,1060 . DOI: 10.11764/j.issn.1672-1926.2010.06.1054

References

[1]Xu Yongchang.Natural Gas Genetic Theory and Application[M].Beijing:Science Press,1994:295-302.[徐永昌.天然气成因理论及应用[M].北京:科学出版社,1994:295-302.]
[2]Wu Shaowu.Status and application of radon emanation concentration and mercury detecting technology[J].Advances in Earth Science,1989,5(4):16-19.[吴少武.氡射气浓度和汞量测量技术的现状与应用[J].地球科学进展,1989,5(4):16-19.]
[3]Hou Lu,Dai Jinxing,Hu Jun,et al.The variation and application of mercury content for natural gases:Also state the mercury content in rocks and soils[J].Natural Gas Geoscience,2005,16(4):514-521.[侯路,戴金星,胡军,等.天然气中汞含量的变化规律及应用——兼述岩石和土壤中汞的含量[J].天然气地球化学,2005,16(4):514-521.]
[4]Zdravko Spiric.Innovative Approach to the Mercury Control During Natural Gas Processing[C].ASME,Petroleum Division:ETCE 2001-Environmental Symposium,Houston,SAD,February 5-7,2001.
[5]McIntosh S A,Noble J R,Ramlakhan C D.Moving natural gas across ocean[J].Oilfield Review,2008 Summer:54.
[6]Liu Quanyou,Li Jian,Hou Lu.Advance of research on mercury and its compounds collecting and measuring methods[J].Natural Gas Geoscience,2006,17(4):562-564.[刘全有,李剑,侯路.油气中汞及其化合物样品采集与试验分析方法研究进展[J].天然气地球科学,2006,17(4):562-564.]
[7]Chen Zhenhong,Song Yan,Qin Shengfei.Geochemical characteristics of CBM reservoirs in southern Qinshui basin[J].Natural Gas Geoscience,2007,18(4):561-564.[陈振宏,宋岩,秦胜飞.沁水盆地南部煤层气藏的地球化学特征[J].天然气地球科学,2007,18(4):561-564.]
[8]Yan Baozhen,Wang Tingbin,Feng Qingtai,et al.Coalbed methane enrichment classifications of Qinshui basin based on geological key controlling factors[J].Journal of Coal Science & Engineering (China),2008,33(10):1102-1106.[闫宝珍,王庭斌,丰庆泰,等.基于地质主控因素的沁水盆地煤层气富集划分[J].煤炭学报,2008,33(10):1102-1106.]
[9]Zhao Mengjun,Song Yan,Su Xianbo,et al.Key geological time of deciding the geochemical characteristics of coalbed methane[J].Natural Gas Industry,2005,25(1):51-54.[赵孟军,宋岩,苏现波,等.决定煤层气地球化学特征的关键地质时期[J].天然气工业,2005,25(1):51-54.]
[10]Ren Zhanli,Xiao Hui,Liu Li,et al.Fission track evidence of Qinshui basin structure and heating evolution[J].Chinese Science Bulletin,2005,50(supplement):87-92.[任战利,肖晖,刘丽,等.沁水盆地构造—热演化史的裂变径迹证据[J].科学通报,2005,50(增刊):87-92.]
[11]Sun Zhanxue,Zhang Wen,Hu Baoqun,et al.Qinshui basin geothermal field characteristics and the relation to coalbed methane distribution[J].Chinese Science Bulletin,2005,50(supplement I):93-98.[孙占学,张文,胡宝群,等.沁水盆地地温场特征及其与煤层气分布关系[J].科学通报,2005,50(增刊I):93-98.]

Outlines

/