Seismic data acquisition quality control

  • How do you acquire seismic data acquisition?

    Seismic acquisition requires the use of a seismic source at specified locations for a seismic survey, and the energy that travels within the subsurface as seismic waves generated by the source gets recorded at specified locations on the surface by what is known as receivers (geophones or hydrophones)..

  • What is quality control of seismic data?

    The Seismic Survey Quality Control job checks the quality of seismic lines for straightness (changes in azimuth) and distance between shot points.
    It also reports summary statistics including duplicate points, point counts, and points outside the threshold values..

  • Seismic images are produced by generating, recording, and analyzing sound waves that travel through the Earth (such waves are also called seismic waves).
    Explosives or vibrating plates generate the waves and a line or grid of geophones records them.
  • The purpose of acquiring and processing seismic data is to learn something about the Earth's interior.
    To understand certain aspects of the Earth, we initially need to figure out some specific relations between the intended targets and measurable parameters.
The quality of seismic volumes is critical in building reliable reservoir models. Seismic data are often polluted by artifacts which have strong impact on 

Do land and marine seismic surveys have errors?

Land and marine seismic surveys often contain errors in survey geometry.
To ensure accurate survey geometry, examining and analyzing the data for quality control (QC) must be performed (Walia and Hannay, 1999;Martin, 2001;Bachrach and Mukerji, 2004; Raef, 2009 ).

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How can quality control be performed on seismic data?

After a more elaborate literature survey, it turns out that there are two types of quality control that can be performed on seismic data.
One is of the acquisition parameters , which are just a few bytes per minute.
Meanwhile, in , the entire data can be screened through QC software before being sent to a central server.

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What is seismic data preprocessing QC?

The main purpose of our seismic data preprocessing QC is to enable the use of appropriate header information, data that are free of noise-dominated traces, and/or flawed vertical stacking in subsequent processing steps.

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Why is the quality of seismic data comparatively high?

Because nodes are fixed on ocean bottom, the locations of nodes are comparatively stable, the influence of sea conditions and ambient environment is small, the interference of noise is comparatively small, so the quality of acquired seismic data is comparatively high.

A National Data Repository (NDR) is a data bank that seeks to preserve and promote a country's natural resources data, particularly data related to the petroleum exploration and production (E&P) sector.
Seismic anisotropy is the directional dependence of the velocity of seismic waves in a medium (rock) within the Earth.
In geophysics, geology, civil engineering, and related disciplines, seismic noise is a generic name for a relatively persistent vibration of the ground, due to a multitude of causes, that is often a non-interpretable or unwanted component of signals recorded by seismometers.

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