鄂尔多斯盆地大牛地低渗气田产水规律

doi:10.11743/ogg20110619

Abstract

Abstract:

Calculation method of saturated water content of natural gas was adopted to qualitatively and quantitatively analyze produced water sources based on the production data and water sample test results of Daniudi low-permeability gas field in Ordos Basin.Moreover,gas wells were classified according to average gas yield and cumulative water and gas ratio (WGR),and water production patterns of different pay zones and single well of various types were analyzed.It is concluded that both water production and gas yield of single well are low in Daniudi low permeability gasfield in Ordos basin.The produced water consists of condensate water,formation water and operating fluid,of which the formation water is predominant.Different pay zones show different production behaviors.The third pay zone in the Permian Xiashihezi Formation and the first pay zone in the Permian Shanxi Formation feature in low water production but high gas production.The first and second pay zones in the Permian Xiashihezi Formation show both low water production and low gas production.The second pay zone in the Shanxi and Taiyuan formations are characterized by high water but low gas production.The gas production of single wells of different types is almost same,but horizontal wells produce more water with a higher WGR.These results can be used to guide selection of water discharging technologies and analysis of production performance.

Key words: water source analysis, water production pattern, low permeability gas reservoir, Daniudi gasfield, Ordos Basin

CLC Number:

TE33⁺2

Zhou Junjie, Li Yingchuan, Song Dongbin, Zhong Haiquan, Liu Tong. Water production pattern of Daniudi low-permeability gas field, Ordos Basin[J]. Oil & Gas Geology, 2011, 32(6): 946-951.

References

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Water production pattern of Daniudi low-permeability gas field, Ordos Basin

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