Title: Oil Production and Water-Cut in Naturally-Fractured Vuggy Reservoirs
Abstract: Abstract Naturally fractured oil reservoirs with vugs of size over 5 meters in diameter are few in the world. We developed a method to correlate the decrease in oil production and the increase in water cut. Production data from Tah oil reservoir (China) with big size vugs and high-density fractures were used to test the approach. It was found that the oil production decline and the water cut increase were coupled closely in many wells from this naturally fractured vuggy oil reservoir. The oil production was characteristic of rapid decline and the water cut was characteristic of sharp increase right after water breakthrough in many oil wells. An idea of shutting off water before water enters the production zone was proposed to reduce the decline rate of oil production and the increase in water cut. This approach of water shut off has many advantages compared to the routine measures which are usually taken after water cut is already great.
Publication Year: 2008
Publication Date: 2008-10-28
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 7
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