التفاصيل البيبلوغرافية
| العنوان: |
Near-bit resistivity measurement device based on wavelet packet optimal algorithm. (English) |
| المؤلفون: |
JIA Hengtian, SHENG Limin, DOU Xiurong, DENG Le, ZHANG Lei |
| المصدر: |
Oil Drilling & Production Technology / Shiyou Zuancai Gongyi; 2012, Vol. 34 Issue 4, p107-110, 4p |
| مصطلحات موضوعية: |
ELECTRICAL resistivity, WAVELETS (Mathematics), DRILLING & boring, ALGORITHMS, ENTROPY, PETROLEUM engineering |
| مستخلص: |
The mission of resistivity measurement device while drilling is usually used to evaluat the real time stratum data. However, the collected information that reflects the resistivity signal contains a lot of noise components, so it is difficult to accurately reflect the formation resistivity information. Based on the algorithm of wavelet packet, the device of near-bit resistivity measurement can measure resistivity of stratum at first time because of the method of measurement while drilling. It can decrease noise when measuring the side resistivity, bit resistivity and azimuthal resistivity, by the algorithm of wavelet packet and the best wavelet tree of reconstruct signal based on information entropy, .which increase the accuracy and reliability of resistivity measurement. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
