摘要
钻井过程中的油层污染可分为泥浆固相颗粒侵入和滤液侵入2种类型。在分析泥浆污染导致的自然电位和深侧向、浅侧向、微侧向测井响应,以及含水饱和度变化量特征的基础上,归纳出了1种油层污染的定性判别方法和可动水分析污染类型的模型。给出了油层污染半径估算式,以及某井的油层污染测井评价试验图和分析数据表。
The formation damage during drilling are recognized as 2 types： mud solid particles plug and mud filtrate invasion. Based on analysis of the responses caused by mud damage to SP log and deep-, shallow- and micro-laterolog, this paper summarizes a qualitative method to distinguish formation damage, and a movable water model to analyze the damage type. The expression to estimate damage radius is presented, and so are the evaluation graphs and data tables of formation damage logging as well.
出处
《测井技术》
CAS
CSCD
2006年第6期568-570,共3页
Well Logging Technology
关键词
测井解释
油层污染
测井响应
侵入半径
定量评价
log interpretation
formation damage
well logging response
invasion radius
quantitative evaluation
