The spontaneous potential is closely related to salinity in formation and mud filtrate.

自然电位的形成与地层水矿化度和钻井液滤液矿化度密切相关.

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Results The RPF of SHR was 88.9 %, but none of SDsa had spontaneous potential.

结果　SHR其自发放电频率为889%, 8例SDsa无一例引出自发电位.

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The laws and relation between spontaneous potential baseline shift amplitude and the influencing factors are acquired.

以自然电位理论为基础,用实验方法揭示了水淹层自然电位基线偏移的机理及影响因素.

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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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