Quantitative soil analyses have been accomplished by chemical gravimetric and radiotracer techniques . 污垢的定量分析在化学的重量分析以及放射性跟踪技术协助下，已能进行。
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Interwell radiotracer test is a method that can obtain the information of reservoir in large scale 放射性井间示踪测试是一种能够在较大范围内获得油藏信息的手段。
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The development of this field in china was started in late 1980s . in 1988 , china institute of atomic energy in cooperation with daqing oil company conducted the first test using tritiated water as tracer for waterflood , opened the curtain of interwell radiotracer test in china 八十年代末期，中国原子能科学中国原于能科学研究院博士学位论文研究院与大庆油田合作，利用氖水作为示踪剂在国内首先开展了放射性井间示踪测试。
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The basic procedure of an interwell radiotracer test is , to inject a proper radioisotope tagged tracer material into the injector together with the injected fluid ; the tracer material will follow the injected fluid and go through the same path of injection fluid penetrating the formation ; finally the tracer material will be produced at the producer ; then , collecting samples at well head of producer , tracer response can be observed ; by analyzing the response of tracer , the information on dynamics of injection fluid and reservoir geology can be obtained 放射性井间示踪测试的基本过程是：将一定量合适的放射性示踪剂介入注入流体，使其通过注入井进入地层并跟随注入流体穿越地层，最后被采油井采出；通过跟踪监测示踪剂在采油井上的响应，获得注水井-采油井之间流体和地层的信息。
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New tracers and their analysis methods , new developments on the interpretation of tracer response and new concepts & methods contributed on tracer methodology . since 1980s , interwell radiotracer test has gained rapid development . the main reasons are radiotracers has the advancetages of high sensitivity , wide selectivity and no chemical contamination on the reservoir 自上世纪八十年代以来，放射性井间示踪测试在国际上得到了很大的发展，主要是因为放射性示踪剂具有种类多、检测灵敏度高、并且对油藏不产生化学污染等优点。
