Translations in context of “diagraphie sonique” in French-English from Reverso Context: L’invention concerne la diagraphie sonique en cours de forage. Le procédé consiste à mesurer, par un outil de diagraphie acoustique, des données acoustiques associées à une formation à l’intérieur d’un trou de forage, . Institut Français du Pétrole. Résumé. L’utilisation d’outils acoustiques à émetteurs -récepteurs multiples et enregistrement numérique permet de faire une.
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Language Portal of Canada Access a collection of Canadian resources on all aspects of English and French, including quizzes. The interpretation of these diffracted patterns shows that they were created by heterogeneities in the shale medium due to dolomitic intercalations situated about 4 m from the well.
In the second step, a Wiener filter was applied to the constant-offset sonic-data gather, after elimination of interface modes.
The well is completed by a casing down to the top of the reservoir layers. The receiver spacing was 1 cm. The language you choose must correspond to the language of the term you have entered. In sandstones, the interface modes have strong amplitudes and a low frequency content. Current usage metrics About article metrics Return to article.
The value of the Stoneley frequency is directly related to shaliness. The full waveforms taken at each receiver were recorded on magnetic tape. The receiver section contains eight diagrapbie stations spanning 3.
The language you choose must correspond to the language of the term you have entered. FAQ Frequently asked questions Display options. The source was fired at equal spacings of 6 inches throughout the open hole section.
At about 1 m, diffractions can be observed on the filtered sonic section Fig. In this field case, wave separation was performed in two steps. The residual constant-offset section was corrected for normal moveout using the velocity function derived from the acoustic log.
diagraphie sonique – Translation into English – examples French | Reverso Context
The sonic data were used to compute an accurate compressional-wave velocity-log obtained after picking of the refracted arrivals Fig. After filtering, the standard deviation is reduced whatever the depth, but mainly in the depth interval. Figure 8 shows from top soniqe bottom the slowness and the standard deviation of the slowness computed from raw sonic data and filtered sonic data first eigensection as well as the frequency log and soniqje standard deviation.
FAQ Frequently asked questions Display options. Enregistrement de la vitesse du son.
IFP Energies nouvelles, Vol. A record of the measurement of porosity done by comparing depth to the time it takes for a sonic impulse to travel through a given length of formation. A collection of writing tools that cover the many facets of English and French grammar, style and usage. In clean sandstone, the Stoneley wave have an apparent frequency of Hz; in shaly sandstone the frequency ranges from Hz to Hz.
Full waveform acoustic data were recorded using a specific acoustic tool assembly in order to obtain a common-shotpoint gather. The use of information coming from vertical well VSP and log and synthetic modeling leads us to differentiate the reflections coming from discontinuities situated above A and below Soniqke the horizontal well.
For xonique purpose, the sonic data were collected in constant offset gathers. In shales, dipping sonic events appear and the residual waves and noise have much stronger amplitudes than they can have in sandstones 1 m depth interval.
La diagraphie sonique a maintenant de multiples applications pour: Sonic section E shows the direct Stoneley wave and its downgoing reflected waves mainly between 13 and 15 ms. The distance between the monopole transmitter and the first receiver station was 3. A collection of writing tools that cover the many facets of English and French grammar, style and usage.
Less usual filters are a Wiener filter and a spectral matrix filter. Initial download of the metrics may take a while. In sandstones, we can notice a residue of Stoneley modes at about 2. Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Translation of “diagraphie sonique” in English
First used for seismic-velocity information, it is now used chiefly for estimating porosity and lithology by the empirical Wyllie time-average equation. After filtering, the residual sonic section shows the refracted modes and the leaky modes Fig.
They are Stoneley waves. Figs 10 to 13 show the sonic fullwaveform sections after constant offset gather processing. Figure 6 shows the common shot gather processing applied to the waveforms diagrapphie when the source was at depth The source-receiver distance varied from 3.
These reflections come from reflectors situated in the oolithe blanche reservoir layer up to a distance of approximately 10 m. The current usage metrics is available hours after online publication and is updated daily on week sonoque. Writing tools A collection of writing tools that cover the many facets of English and French grammar, style and usage.
Data correspond to usage on the plateform after The sonic data were recorded to study the reflected Stoneley waves.