发明名称 |
IMPROVED MEASUREMENT OF DOWNHOLE GAMMA RADIATION BY REDUCTION OF COMPTON SCATTERING |
摘要 |
Systems, methods and devices for evaluating an earth formation intersected by a borehole. Method embodiments may include using a downhole tool in the borehole to generate a plurality of signal pulses responsive to detected radiation; using at least one signal quality characteristic of each pulse of the plurality of pulses to classify each pulse as belonging to at least one subset of a plurality of pulse subsets; and using one of more of the plurality of pulse subsets to estimate a value of a parameter of interest. The signal quality characteristic may be indicative of a pulse pile-up condition being associated with the respective pulse. The signal quality characteristic may include at least one of: i) rising time (slope) of the respective pulse; ii) time between a peak of the respective pulse and a peak of a closest following pulse; iii) pulse width; and iv) skewness of the pulse. |
申请公布号 |
WO2016205446(A1) |
申请公布日期 |
2016.12.22 |
申请号 |
WO2016US37749 |
申请日期 |
2016.06.16 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
ZHOU, Quming;ZHANG, Qiong;ZHANG, Hao |
分类号 |
E21B47/00;G01V5/04;G01V5/12 |
主分类号 |
E21B47/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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