网络出版日期: 2012-02-20
基金资助
国家科技重大专项“十二五”项目“大型油气田及煤层气开发”(编号:2011ZX05057-001)
Study on law of injectivity index per meter change with cumulative water injection
Online published: 2012-02-20
张明峰 , 妥进才 , 张小军 , 吴陈君 , 郭力军 . 米吸水指数随累积注水量变化规律研究[J]. 岩性油气藏, 2012 , 24(1) : 112 -116 . DOI: 10.3969/j.issn.1673-8926.2012.01.022
When a production well adjusted to an injection well, the water injectivity index of the well will keep increasing with the oil near the well bottom being droved away by the injected water. However, there is no accurate formula to describe the law so far. Based on the Buckley-Leverett equation and the classical Darcy equation, combined with the relationship curve of water cut and water saturation, the relationship formula of the injectivity index per meter and cumulative water injection per meter was deduced. Finally, the field data was used to analyze and verify the validity of the formula. This formula provides a theoretical basis for the future calculation of injectivity index per meter and the well injection allocation.
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