Characteristics and genesis of formation water in Daniudi Gas Field, Ordos Basin
Online published: 2011-10-20
Based on the analysis of the enrichment and deficit of ion in the formation water, combined with the previous research, the gensis of formation water in Taiyuan, Shanxi and Lower Shihezi Formation in Daniudi Gas Field is analyzed. The result shows that the formation water in the study area is controlled by sedimentary environment, waterrock interaction, fluid mixing and evaporation effect. The formation water in each formation has high content of Br - , Ca 2+ and Sr 2+ , and little content of Mg 2+ and Na + . The enrichment of Br - in Lower Shihezi Formation and the chemical similarity of the formation water in different formations indicate the existence of water mixing.Much acid water fromcoal measures has an important effect on reservoir diagenesis.
WANG Zhenyu , YANG Liuming , MA Feng , YANG Liuyan , ZANG Shiqing , LUO Xinsheng . Characteristics and genesis of formation water in Daniudi Gas Field, Ordos Basin[J]. Lithologic Reservoirs, 2011 , 23(5) : 115 -120 . DOI: 10.3969/j.issn.1673-8926.2011.05.023
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