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gai zao hou de jing bi qu xin jing xia gen zong ding wei yi
Author(s): 
Pages: 52-53+5
Year: Issue:  1
Journal: Well Logging Technology

Keyword:  自然伽玛测井仪井壁取心定位器;
Abstract: 井壁取心通常是采用跟踪视电阻率曲线定位.在井内泥浆及地层水矿化度高的情况下,视电阻率曲线幅度太低,难以准确跟踪井壁取心的位置.若采用电极系作井下定位仪,所需的完好电缆缆芯数目多.而井壁取心作业对电缆的破坏大,容易造成电缆断芯,出现缆芯不够用.本文介绍对FC-751型放射性仪器的改造,以满足井壁取心跟踪定位的需要。
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