Application of the Degration Degree of Organic Matter to Evaluating the Biogas Source Rock
Received date: 2009-05-18
Revised date: 2009-09-09
Online published: 2009-12-10
]The Degration degree of organic matter during the anaerobic period of bacteria can be used as a method for evaluating the biogas source rock. The organic geochemical and microscope analyses for 20 samples in the north of Sonliao basin indicate that the degree of degration of organic matter is not correlated to the maturity of organic matter, while it is positively correlated to the type of organic matter. Degree of degration of organic matter is up to 80% for the type I biogas source rock but is always less than 60% for the type Ⅲ biogas source rock. The degration degree of organic matter and the production of biogas (it can be used to calculate the conversion ratio of biogas) of original algea before and after biogas simulation showed that the degree of degration of organic matter is positively correlated to the conversion ratio of biogas. When the degree of degration is up to 80%, the conversion ratio of biogas is 40%~50% and when the degree of degration is less than 10%, the conversion ratio of biogas is only 7%. The TOC of immature biogas source rock can be calculated approximately by the relationship between the degree of degration of organic matter and the conversion ratio of biogas.
LUO Xia,WANG Xue,LI Jian,FANG Wei,ZHANG Ying,FENG Zi-hui,WU Da-mao,LIU Wei . Application of the Degration Degree of Organic Matter to Evaluating the Biogas Source Rock[J]. Natural Gas Geoscience, 2009 , 20(6) : 945 -950 . DOI: 10.11764/j.issn.1672-1926.2009.06.945
［1］顾树松.柴达木盆地东部第四系气田形成条件及勘探实践［M］.北京:石油工业出版社,1983.
［2］戚厚发,关德师,钱贻伯,等.中国生物气成藏条件［M］.北京:石油工业出版社,1997.
［3］张英,李剑,张奎,等.柴达木盆地三湖地区第四系生物气源岩中可溶有机质丰度及地质意义［J］.地质学报，2007，81（12）：1716-1722.
［4］丁安娜,王明明,李本亮,等.生物气的形成机理及源岩的地球化学特征——以柴达木盆地生物气为例［J］.天然气地球科学，2003，14（5）：402-407.
［5］丁安娜,卢双舫,冯子辉,等.生物气源岩中原核生物改性指标与评价新方法［J］.石油勘探与开发，2008，35(1):59-66.
［6］关平,王大锐,黄第藩.柴达木盆地东部生物气与有机酸地球化学研究［J］.石油勘探与开发，1995，22(3):41-45.
［7］康晏,王万春,张道伟,等.柴达木盆地第四系脂肪酸分布特征与生气潜力的关系［J］.石油与天然气地质，2005,26(6):778-785.
［8］张祥,纪宗兰,杨银山,等.关于生物气源岩评价标准的讨论——以柴达木盆地第四系生物气为例［J］.天然气地球科学，2004，15（5）：465-470.
［9］卢双舫,徐庆霞,刘绍军,等.评价生物气生成量、生成期的碳同位素平衡法及其应用［J］.沉积学报，2008，26（2）：308-313.
［10］Rice D D, Claypool G E.Generation, accumulation, and resource potential of biogenic gas ［J］.AAPG Bulletin, 1981，65 (1): 5-25.
［11］Thode-Andersen S,Jorgensen B B.Sulphate reduction and the formation of 35S-labeled FeS, FeS2,and S in coastal marine sediments［J］.Limnology and Oceanography,1989,34:793-806.
［12］刘春莲,杨建林,Hans-Joachim R hl,等.影响湖相沉积岩中有机碳分布的主要因素——以三水盆地为例［J］.沉积学报，2001，19（1）：114-116.
［13］王雪,冯子辉,宋兰斌.松辽盆地北部生物气特征及其成因［J］.天然气工业, 2006, 26(4): 5-7.
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