Po测氡法再探

REVIEWING Ρ RADON MEASUREMENT

张刘平 阮天健

Zhang Linping Ruan Tianjian

测氡法在应用于油气勘探时,取样装置及测试条件均须改进。改进后的装置主要增加了一个密封胶环,这不仅起到了封闭作用,而且还对保护管起到了定位作用;测试条件的改进主要是延长取样时间1分钟,将原孔深35cm增加到155cm。改进后的装置在文31油藏的测试中,记数率平均达80脉冲/min以上,平面图上环状异常形态清楚,且测出了负异常。

Use radon measurement to explore oil and gas, one have to improve the sampling device and test conditions.The added sealing rubber ring in the improved sampler could not only act as a sealing but also locate casing pipe;the inprovement of test conditions include prolonging the sampling time and increasing well-hole depth from 35 cm to 155 cm. The improved device was used to test Wen-31 oil pool,the counting rate was more than 80 pulse/min. The cyclic anomaly was clearly reflected in plan,and negative anomaly was also measured.

10.11743/ogg20000221