基于自然伽马测井信号的维纳滤波法求取泥质含量

吴国平; 苏江玉; 成实; 黄婧芝

Volume 33 Issue 4

Jul. 2008

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WU Guo-ping, SU Jiang-yu, CHENG Shi, HUANG Jing-zhi, 2008. A Method for Obtaining Shaliness Using Wiener Filtering Based on Logging Data Natural Gamma Ray. Earth Science, 33(4): 572-576.

Citation:

WU Guo-ping, SU Jiang-yu, CHENG Shi, HUANG Jing-zhi, 2008. A Method for Obtaining Shaliness Using Wiener Filtering Based on Logging Data Natural Gamma Ray. Earth Science, 33(4): 572-576.

WU Guo-ping, SU Jiang-yu, CHENG Shi, HUANG Jing-zhi, 2008. A Method for Obtaining Shaliness Using Wiener Filtering Based on Logging Data Natural Gamma Ray. Earth Science, 33(4): 572-576.

Citation:

WU Guo-ping, SU Jiang-yu, CHENG Shi, HUANG Jing-zhi, 2008. A Method for Obtaining Shaliness Using Wiener Filtering Based on Logging Data Natural Gamma Ray. Earth Science, 33(4): 572-576.

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A Method for Obtaining Shaliness Using Wiener Filtering Based on Logging Data Natural Gamma Ray

1.
Institute of Information Engineering , China University of Geosciences, Wuhan 430074, China
2.
Northwest Petroleum Bureau , SINOPEC Northwest Branch , Urumchi 830011, China

Received Date: 2007-09-16
Publish Date: 2008-07-25

Abstract

Abstract

The research on approaches to calculate shaliness accurately and efficiently is of great significance for reservoir capacity estimation, as shaliness is an important parameter to evaluate the reservoir qualitatively and quantitatively.Considering logging data GR (natural gamma ray) is the measured output from its real value which passes through a convolution filter, this paper proposes a new approach to calculate the value of shaliness according to GR values directly.The inversion filter factors can be acquired from a certain sequence of the measured logging data GR and the real value of GR, by taking advantage of Wiener filtering.Then, shaliness can be expressed as a convolution between GR sequence and the inversion filter factors.Experiments on core-analysis-data supported oil well K13, Northwest China show that shaliness values obtained with the above method are much more accurate than those obtained with conventional methods.Its trial application in oil well K11, S44, S4 of the same exploration area has proved to be very effective.
- natural gamma ray,
- shaliness,
- Wiener filter,
- inversion filter factors

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References(31)

References

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A Method for Obtaining Shaliness Using Wiener Filtering Based on Logging Data Natural Gamma Ray

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