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Research on the normalisation method of logging curves: taking XJ Oilfield as an example

Chang Mingyang

Chang Mingyang

Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education (Yangtze University)Wuhan, China
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Mingyang, Chang
, 
Deng Rui

Deng Rui

Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education (Yangtze University)Wuhan, China
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Rui, Deng
, 
Wang Haijiang

Wang Haijiang

Mangya, China
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Haijiang, Wang
, 
Xie Bibo

Xie Bibo

Mangya, China
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Bibo, Xie
 et 
Zhao Zhongliang

Zhao Zhongliang

Mangya, China
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Zhongliang, Zhao
  
08 avr. 2021
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Publié en ligne: 08 avr. 2021
Pages: 99 - 110
Reçu: 27 nov. 2020
Accepté: 31 janv. 2021
DOI: https://doi.org/10.2478/amns.2021.1.00026
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© 2021 Chang Mingyang et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Fig. 1

Well location map of the study area.
Well location map of the study area.

Fig. 2

Logging curve of well 29.
Logging curve of well 29.

Fig. 3

Profile of well connection of marker bed in the study area.
Profile of well connection of marker bed in the study area.

Fig. 4

GR distribution histogram of standard well in upper mudstone layer of H000.
GR distribution histogram of standard well in upper mudstone layer of H000.

Fig. 5

Frequency histogram of GR curve of well a.
Frequency histogram of GR curve of well a.

Fig. 6

Frequency histogram of GR curve of standard well.
Frequency histogram of GR curve of standard well.

Fig. 7

GR frequency histogram before and after normalisation by mean square error method.
GR frequency histogram before and after normalisation by mean square error method.

Fig. 8

Distribution of GR curve of standard layer before normalisation.
Distribution of GR curve of standard layer before normalisation.

Fig. 9

GR curve distribution of standard layer after normalization.
GR curve distribution of standard layer after normalization.

Fig. 10

Statistical chart of consistency of shale interpretation in the study area.
Statistical chart of consistency of shale interpretation in the study area.

Fig. 11

Consistency analysis of porosity interpretation in the study area.
Consistency analysis of porosity interpretation in the study area.

Fig. 12

Comparison of logging interpretation results after standardization.
Comparison of logging interpretation results after standardization.

Properties of raw materials

Well name GR
System median Single well median Offset Logging company
Additive factor Multiplication factor
A1 142 139.2 2.8 1 Halliburton
A2 142 137 5 1 Halliburton
A3 142 149 −7 1.12
A4 142 147 −5 1 Schlumberger
A5 142 133 9 1.1 Schlumberger
A6 142 136 6 1 Schlumberger
A7 142 134 8 1.134 Baker Hughes
A8 142 139 3 1 Schlumberger
A9 142 141 1 1 Schlumberger
A10 142 128 14 0.98 Baker Hughes
A11 142 133 9 1 Baker Hughes
A12 142 144 −2 1 Schlumberger
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Sciences de la vie, Sciences de la vie, autres, Mathématiques, Mathématiques appliquées, Mathématiques générales, Physique, Physique, autres
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