Attenuation analysis of acoustic waveforms in a borehole intercepted by a sand-shale sequence reservoir

Autor:	Pei-Cheng Xu, Chris L. Hackert, Hughbert A. Collier, Jorge O. Parra
Rok vydání:	2006
Předmět:	Geophysics Lithology Attenuation Well logging Petrophysics Borehole Waveform Mineralogy Geology Geotechnical engineering Petroleum reservoir Oil shale
Zdroj:	The Leading Edge. 25:186-193
ISSN:	1938-3789 1070-485X
DOI:	10.1190/1.2172311
Popis:	We applied a new processing algorithm to extract intrinsic attenuation (1/Q) from the head P-wave of a full waveform sonic log. The sonic log was acquired in an oil reservoir in northeast Texas (USA). The reservoir is a sand-shale sequence characterized at the pore, core, and borehole scales. We found that the attenuation correlates with the lithology, including a sandstone zone partially saturated with oil and water. A comparison of 1/Q with the microseismogram and the petrophysics of other well logs provides a way of evaluating the consistency of Q at each borehole depth location. An analysis of the results explains the different attenuation anomalies found in the Q log.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c91ee51b15cfff1620f3f81aba57d60a https://doi.org/10.1190/1.2172311 Zobrazit plný text záznamu