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Keywords: dispersion effect
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Proceedings Papers

Paper presented at the SPWLA 46th Annual Logging Symposium, June 26–29, 2005
Paper Number: SPWLA-2005-R
... Upstream Oil & Gas dispersion data frequency range frequency waveform data unconsolidated slow formation dispersion effect spwla 46 well logging modeling slow formation dispersion curve formation alteration wave data slowness log analysis tool wave acoustic measurement kHz...
Proceedings Papers

Paper presented at the SPWLA 45th Annual Logging Symposium, June 6–9, 2004
Paper Number: SPWLA-2004-X
... frequency and the low frequency transmitters are fired in sequence. Two separate sets of waveforms are recorded at the receiver array and stored in the tool's memory. The low frequency signal bandwidth is limited to minimize the dispersion effect on the semblance algorithm that is used to recognize...
Proceedings Papers

Paper presented at the SPWLA 44th Annual Logging Symposium, June 22–25, 2003
Paper Number: SPWLA-2003-RR
... proportional to the frequency of the measuring current. A previous paper concluded that dispersion effects in theory should be observable between the resistivity measurements of 2-MHz LWD and 20-KHz wireline tools, but the effect in actual well log data could not be conclusively demonstrated. There are several...
Proceedings Papers

Paper presented at the SPWLA 44th Annual Logging Symposium, June 22–25, 2003
Paper Number: SPWLA-2003-II
.... With these examples, we address several major influences on the LWD quadrupole wave measurement. These influences include dispersion effect and its controlling factors, noise contamination, tool eccentering, formation type (fast or slow), and formation anisotropy. We use theoretical/numerical modeling results...

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