Dynamic tracking model for the reservoir water flooding of a separated layer water injection based on a well temperature log

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• 作者：Keliu Wu ; Xianfang Li ; Ming Ruan ; Mingyou Yu…
• 关键词：Water cut ; Separated layer water injection ; Well temperature log ; Model ; Stochastic process
• 刊名：Journal of Petroleum Exploration and Production Technology
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：5
• 期：1
• 页码：35-43
• 全文大小：1,996 KB
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• 刊物主题：Geology; Industrial and Production Engineering; Energy Technology; Offshore Engineering; Industrial Chemistry/Chemical Engineering; Environmental Monitoring/Analysis;
• 出版者：Springer Berlin Heidelberg
• ISSN：2190-0566

文摘

A dynamic tracking model for the reservoir water flooding of a separated layer water injection was established. Based on the basic principles of heat and mass transfer, the water profile was determined using a well temperature curve. The Poisson process analysis and stochastic process methods were applied to calculate the water saturation, water breakthrough time, and water cut of each layer in a water-flooded reservoir at any given time. When the oil reservoir was producing water, the water cut predicted by the models, with consideration of the micro-pore distribution, approximated the practical measurement, having an error of less than 5?%. The sample application clearly indicated that larger water injection intensity (water intake per unit thickness) could result in more drastic water saturation variation, earlier water breakthrough, and faster increase in the water cut for layers with numerous high-permeability channels, such as fractures.