In Eni HQ, the sonic QC is performed by means of two software packages: Techlog® by Schlumberger and Geolog® by Paradigm. The described approach required a specific know-how and a fit-for purpose software. A specific workflow to approach the sonic QC has been defined and structured as follow:Ĭheck of the acquisition/interpretation parameters Ĭomparison and integration with other logs or data.
The sonic log is the result of a complex processing of a huge amount of raw data. For the acoustic measurements is even more important, since the acquired data are very complex: the tool is multi-samples, multi-sensors and it is able to acquire several set of waveforms for a single depth. Generally speaking, the QC on log data is the fundamental starting point to obtain reliable curves and, consequently, interpretation. A specific quality control workflow is proposed, and the principal steps will be explained by means of some impacting examples. Since the sonic data is an important input for different disciplines, from petrophysics to seismic, the main aim of this paper is to underline the impact of a proper Quality Control (QC) on sonic log acquisition in order to obtain reliable results.
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