Lithologic Reservoirs ›› 2008, Vol. 20 ›› Issue (2): 132-136.doi: 10.3969/j.issn.1673-8926.2008.02.024

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Calculation method of contaminated ar ea homing and its application

QU Yongchun 1, 2, WANG Zhuwen1   

  1. 1. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China; 2. Logging & Testing Services Company, Daqing Oilfield Company, Daqing 163853, China
  • Online:2008-06-15 Published:2008-06-15

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Abstract:

The contamination has a great impact on the precision of measurement in isotope logging. The contamination type and contamination correction coefficient are introduced briefly. The interpretation result was not influenced before the isotopes distributed in the formation; the proportional relationship among formation injection
quantity, the filtration production content and the radioactivity intensity was destroyed by contamination after isotopes had distributed in the formation; and the interpretation accuracy for the amount of stratified relative water injection was affected. According to these characteristics, the contamination area homing model and calculation method for contamination correction are proposed, and good results have been achieved.

Key words: fractures, distribution, model, Lower Cretaceous, Kulongshan, Jiuquan Basin

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