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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The diatraphie 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 B the horizontal well.

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Writing tools A collection of writing tools that cover the many facets of Diafraphie and French grammar, style and usage.

DIAGRAPHIE SONIQUE (sonic logging): Topics by

A collection of writing tools that cover the many facets of English and French grammar, style and usage. Figure 6 shows the common shot gather processing applied to the waveforms recorded when the source was at depth The maximum standard deviation observed at m is due to the interference of downgoing reflected waves and a direct Stoneley soniaue.

The receiver spacing was 1 cm. Glossaries and vocabularies Access Translation Bureau glossaries and vocabularies. FAQ Frequently asked questions Display options.

The record ciagraphie from this process is called “acoustic log. These sonic sections were time shifted to be directly comparable with the raw data, using the picked time of the direct wave arrival.

Sonic section F shows the upgoing reflected Stoneley waves. Figs 10 to 13 show the sonic fullwaveform sections after constant offset gather processing. The distance between the monopole transmitter and the first receiver station is 9 ft.


The language you choose must correspond to the language of the term you have entered. Each filter was applied in a time-window in order to select a specific wave. 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 part of the well studied, the reservoir layers are clean sandstones or shaly sandstones overlain by impervious shale cap rock.

Sonic section E diwgraphie the direct Stoneley wave and its downgoing reflected waves mainly between 13 and 15 ms. They are mud waves. In which subject field? First used for seismic-velocity information, it is now used chiefly for estimating porosity and lithology by the empirical Wyllie time-average equation. Access a collection of Canadian resources on all aspects of English digraphie French, including quizzes. On this section we can observe good correlation between the frequency log and lithology derived from an independent analysis.

The residual constant-offset section was corrected for normal moveout using the velocity function derived from the acoustic log.

Translation of “diagraphie sonique” in English

Services Same authors – Google Scholar. The wave separation filters commonly used are apparent velocity filters. In the second step, a Wiener filter was applied to the constant-offset sonic-data gather, after elimination of interface modes. They are Stoneley waves. The filter was applied dkagraphie the 0 to 2.

It was used to enhance the interface modes Fig. 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. First used for seismic-velocity information, it is now used chiefly for estimating porosity and lithology by the empirical Wyllie time-average equation.

In the configuration used, the distance between two receivers was siagraphie cm. The well is completed by a djagraphie down to the top of the reservoir layers. After processing, the acoustic data Fig.


Each filter is designed to cancel a selected wave, characterized by its velocity. Each wave contains information that can be disturbed by the presence of the other waves. Volume 47, Number 2March-April In shales 1 – 1 m depth intervalthe interface modes have a high frequency content and propagate with a constant velocity, which is the mud diagrapuie.

Access a collection of Canadian resources on viagraphie aspects of English and French, including quizzes.

Maximum shalk ness is observed in the depth interval. Figure 7 shows a constant offset gather. The sonic data were recorded to study the reflected Stoneley waves.

Less usual filters are a Wiener filter and a spectral matrix filter. Figure 9 shows the energy log derived from the set diagtaphie first eigenvalues associated with the first eigensections.

In sandstones, the interface modes have strong amplitudes and a low frequency content. Full waveform acoustic data were recorded using a specific acoustic tool assembly in order to obtain a common-shotpoint gather.

The sonic tool used was a Schlumberger Dipole Imaging tool. 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. 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.

Geophysics Oil and Natural Gas Extraction. For this experiment, diagraphoe monopole transmitter was activated with a low frequency pulse for the purpose of generating low frequency Stoneley waves.