DIAGRAPHIE SONIQUE PDF

DIAGRAPHIE SONIQUE PDF

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.

Author: Samuzilkree Dodal
Country: France
Language: English (Spanish)
Genre: Spiritual
Published (Last): 14 September 2009
Pages: 139
PDF File Size: 1.81 Mb
ePub File Size: 20.16 Mb
ISBN: 194-5-83400-746-9
Downloads: 6693
Price: Free* [*Free Regsitration Required]
Uploader: Tojami

Another way is to use an acoustic logging tool with a modified radiation-pattern in order to illuminate either aboveor belowdiscontinuities.

The wave separation filters commonly used are apparent velocity filters. A method that measures the time required for sound impulses to travel through a given length of rock. Glossaries and vocabularies Access Translation Bureau glossaries and vocabularies. This usually permits a reasonably accurate measurement of the effective porosity of a given formation.

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, 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.

Sonic section E shows the direct Stoneley wave and its downgoing reflected waves mainly between 13 and 15 ms. First used for seismic-velocity information, it is now used chiefly for estimating porosity and lithology by the empirical Wyllie time-average equation. The current usage metrics is available hours after online publication and is updated daily on week days. La diagraphie sonique a maintenant de multiples applications pour: First used for seismic-velocity information, it is now used chiefly for estimating porosity and lithology by the empirical Wyllie time-average equation.

  BEAGLEHOLE EPIDEMIOLOGIA BASICA PDF

Translation of “diagraphie sonique” in English

In the configuration used, the distance between two receivers was 50 cm. 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. The receiver spacing was 1 cm.

Access a collection of Canadian resources on all aspects of English and French, including quizzes. In clean sandstone, the Stoneley wave have an apparent frequency sonnique Hz; in shaly sandstone the frequency ranges from Hz to Hz.

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

The efficiency of the wave-separation algorithms depends on the choice of acoustic data gathers. In the common-shot gather, the refracted arrivals and borehole modes have linear moveout across the diagrpahie range, while the reflected events have hyperbolic moveout.

Each filter was applied in a time-window in order to select a specific wave. Less usual filters are a Wiener filter and a spectral matrix filter.

After processing, the acoustic data Fig. Full waveform acoustic data were recorded using a specific acoustic tool assembly in order to obtain a sonjque gather.

The filter was applied in the 0 to 2. The log analyst must pay attention to the choice of parameters for acquisition. The maximum standard deviation observed at m is due to the interference of downgoing reflected waves and a direct Stoneley wave. Acoustic data are sorted either in a common-shot gather or in a constant-offset gather. The source-receiver digraphie varied from 3. Dixgraphie 9 shows the energy log derived from the set of first eigenvalues associated with the first eigensections.

Glossaries and vocabularies Access Translation Bureau glossaries and dagraphie. Writing tools A collection of writing tools that cover the many facets of English and French grammar, style and usage. The xiagraphie was fired at equal spacings of 5 cm throughout the open hole section of the well.

  CORRE CONEJO UPDIKE PDF

The transition between these two geological formations are clearly marked at 1 m. These reflections come from reflectors situated in the oolithe blanche reservoir layer up to a distance of approximately 10 m.

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

After filtering, the residual sonic section contains the noise and the other waves. In which subject field? Initial download of the metrics may take a while. 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. Services Same authors – Google Scholar. Data correspond to usage on the plateform after This log correlates in depth with the frequency log and exhibits the interval depth where the reflected downgoing Stoneley waves are very strong.

The receiver section contains eight dipole-monopole stations spanning 3.

On this section we can observe good correlation between the frequency log and lithology derived from an independent analysis. The signal to noise ratio is enhanced by spectral matrix filtering. For each gather Fig. A collection of writing tools that cover the many facets of English and French grammar, style and usage.

In sandstones, we can notice a residue of Stoneley modes at about 2. Figure 6 shows the common shot gather processing applied to the waveforms recorded when the source was at depth Figs 10 to 13 show the sonic fullwaveform sections after constant offset gather processing.

Usually measured in microseconds per foot. The distance between the monopole transmitter and the first receiver station is 9 ft.