河道砂油藏开发中后期配产配注方法及应用

doi:10.11743/ogg20110617

Abstract

Abstract:

Channel sandstone reservoirs are generally poor in continuity and small in area.These features,in combination with the scarcity of basic data,make reservoir simulation difficult to work effectively.According to the dynamic regular patterns of the reservoirs,this paper puts forward statistic relationships between the injection and production index of channel sandstone reservoirs,including double logarithmic linear relationship between cumulative liquid production and time,semi-logarithmic linear relationship between cumulative water injection and the cumulative oil production.Based on the statistic relationships,we derive the relationship of the cumulative liquid production,monthly oil production,monthly water injection,monthly injection-production ratio with production time.Furthermore we set up a series of formulas for proration and injection allocation that can reveal the increasing of cumulative liquid production,monthly water injection and monthly injection-production ratio with time,and the decreasing of monthly oil production with time during stable waterflooding stage.The formula application in Zhuang 106-54 sandstone,Laohekou oilfield,indicates that the monthly oil production decrease obviously,whereas the daily water injection and monthly injection-production ratio increase monthly,a trend in accordance with the regular pattern of water flooding sandstone reservoirs.The proration and injection allocation approach has been successfully applied in Zhuang 106-54 sandbody of Laohekou oilfield and has contributed significantly to the stabilization oil production.

Key words: development pattern, proration and injection allocation, channel sandstone reservoir, Zhuang 106-54 sandbody, Laohekou oilfield

CLC Number:

TE349

Feng Bin, Lü Aimin, Wang Wei, Zhao Fenghua. Approach and application of proration and injection allocation at the middle-late production stages in channel sandstone reservoirs[J]. Oil & Gas Geology, 2011, 32(6): 934-939.

References

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Approach and application of proration and injection allocation at the middle-late production stages in channel sandstone reservoirs

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