自然电位测井（SP） 自然电位测井（Spontaneous potential logging）是在裸眼井中测量井轴上 自然产生的电位变化，以研究井剖面的一种测井方法。
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spontaneous-potential well logging [油气] 自发电位测井
以上来源于: WordNet
The pressure interpretation mathematical model is established based on the theory of spontaneous potential logging;
从自然电位测井原理出发建立压力解释数学模型；
So, the investigation depth of spontaneous potential logging is the depth of mud invasion, and relation between spontaneous potential and mud invasion depth may be built.
因此，可以得出自然电位测井的探测深度就是泥浆侵入深度，并可建立自然电位与泥浆侵入深度之间的关系。
A model of logging response of spontaneous potential and induced polarization potential is established.
建立了自然电位和激发极化电位测井响应模型。
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