摘 要 从分析影响产能的因素着手,修正了油气层损害室内评价指标岩心伤害率DR(damage ratio) 的定义,确定了岩心伤害深度和伤害段岩心渗透率的测定方法,并针对两种渗透率不同的岩心完善了梯度测量法和储层伤害室内评价方法.
Abstract In this paper a new defined damage ratio is used to evaluate the core damage using different muds. It could be demonst rated that the new defined damage ratio is an expedient value for the determination of a reliable extent of the damaged zone of the tested core. A procedure for formation damage testing is developed covering the test methodology and result calculation. The core flow apparatus is improved for the measurement of the pressures along the core axis. Both four types of mud and two types of sandstone core are used in the experiments.
1 对储层伤害室内评价指标的修正
2 岩心伤害深度和岩心伤害率的确定
3 试验装置和梯度测量法的完善
4 泥浆污染评价试验
5 结论
参考文献
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