关键词: 井筒压降, 合采, 产能, 分析方法

Abstract: In the testing process of exploratory and evaluation wells, single-layer testing is mostly used to measure the productivity of each layer. It is necessary to adopt reasonable calculation, evaluation and analysis methods to predict productivity, which is impacted by such factors as interlayer pressure, fluid supply capacity, workstring size, and fluid properties during commingled production. Well DN5 is studied in this paper as an example. Commingled production was analyzed and studied by establishing a vertical pipe flow model for wellbore, and using a systematic analysis method, which provides a reliable analysis method for the well testing of commingled production and development.

Key words: wellbore pressure drop, commingled production, productivity, analysis method