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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Another way is to use an acoustic logging tool with a modified radiation-pattern in order to illuminate either aboveor belowdiscontinuities. First used for seismic-velocity information, it is now used chiefly for estimating porosity and lithology by the empirical Wyllie time-average equation. At sknique 1 m, diffractions can be observed on the filtered sonic section Fig. Usually measured in microseconds per foot. Initial download of the metrics may take a while.

Geophysics Oil and Natural Gas Extraction. Enregistrement de la vitesse du son.

Translation of “diagraphie sonique” in English

The source was fired at equal spacings of 5 cm throughout the open hole section of the well. In which subject field?

The filter was applied in the 0 to 2. The processing included spectrum equalization in the kHz frequency bandwidth Fig. In this field case, wave separation was performed in two steps.


DIAGRAPHIE SONIQUE (sonic logging): Topics by

The acoustic data must be recorded with well suited spatial and temporal sampling-rates to avoid spatial and temporal aliasings. The efficiency of the wave-separation algorithms depends on the choice of acoustic data gathers.

Figure 8 shows from top to 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 its standard deviation. The borehole Stoneley waves are trapped modes that can be reflected when the direct borehole Stoneley wave encounters permeable fractures Hornby, Johnson, Winkler and Plumb, or a major change in lithology Hornby, Maximum shalk ness is observed in the depth interval.

The interpretation of these ddiagraphie patterns shows that they were created by heterogeneities in the shale medium due to dolomitic intercalations situated about 4 m from the well.

La diagraphie sonique a maintenant de multiples applications sonlque Figure 7 shows a constant offset gather. In the configuration used, the distance between two receivers was 50 cm.

These sonic sections were time shifted to be directly comparable with the raw data, using the picked time of the direct wave arrival. The maximum standard deviation observed at m is due to the diagrahie of downgoing reflected waves and a direct Stoneley wave.

Sonic section E shows the direct Stoneley wave and its downgoing reflected waves mainly between 13 and 15 ms. The figure shows, from right to left, the raw data Athe flattened raw data Bthe first eigensection obtained by matrix spectral filtering C and its associated residual eigensection D. In clean sandstone, the Stoneley wave have an apparent frequency of Hz; in shaly sandstone the frequency ranges from Hz to Hz.


diagraphie sonique – Translation into English – examples French | Reverso Context

The distance between the monopole transmitter and the first receiver station is 9 ft. The sonic tool used was a Schlumberger Dipole Imaging tool.

Writing tools A collection of writing tools that cover the many facets of English and French grammar, style and usage. The fule waveforms recorded by an array of receivers in a borehole sonic tool contain a set of waves that can be fruitfully used to obtain detailed information about the nearborehole lithology and structure.

In the first step, a Wiener filter was applied in the 2-to-5 ms time-interval.

Enregistrement de la vitesse du son. Soniique tools A collection of writing tools that cover sonkque many facets of English and French grammar, style and usage. On this section we can observe good correlation between the frequency log and lithology derived from an independent analysis. Change the order of display of the official languages of Canada English first French first Option to display the non-official languages Spanish or Portuguese Neither Spanish Portuguese Display definitions, contexts, etc.