Logging Interpretation of Porosity for Tight Glutenite Based on Principal Component Analysis
doi: 10.14027/j.cnki.cjxb.2016.04.012
Funds:
Natural Science Foundation of Shandong Province, No. ZR2015PD008; Sinopec project, No.P15085; Postdoctoral project in Shengli Oilfield, No.YBK1503
- Received Date: 2015-08-24
- Rev Recd Date: 2015-11-28
- Publish Date: 2016-08-10
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Key words:
- tight glutenite /
- log evaluation /
- principal component analysis /
- Dongying sag /
- porosity
Abstract: Lithology recognition is an important work in log evaluation of tight glutenite. Glutenite is characterized by diverse lithology and complex component. These factors always result in difficulty in lithology recognition and logging interpretation of porosity. In this article, take tight glutenite in the lower part of the 4th member of Shahejie formation in steep-slope zone in north Dongying Sag as an example, based on petrologic characteristics, glutenite was classified according to different rock types and framework minerals. Rock thin sections were used to demarcate lithology in log curve, and log response for different lithology were extracted, then the author established lithology recognition method for tight sandstone based on principal component analysis, and finally established porosity evaluation method based on log curve for different lithology. Practice indicates that application of this method can increase accuracy both in lithology recognition and porosity prediction by a wide margin.
| Citation: | GAO Yang, LI ZhongXin. Logging Interpretation of Porosity for Tight Glutenite Based on Principal Component Analysis[J]. Acta Sedimentologica Sinica, 2016, 34(4): 716-724. doi: 10.14027/j.cnki.cjxb.2016.04.012
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