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    Class and Course
    1. NExT
    2. Petrotechnical
    3. Borehole Seismic Technology

    Borehole Seismic Technology

    • Foundation
    • 5 Days
    • classroom1Classroom
      • Average client rating (based on 74 attendee reviews)

    Borehole Seismic data provides the critical depth and velocity parameters needed to link seismic data with downhole log and well data.

    Borehole seismic tools have evolved from single-component sensors to modern seismic arrays. These moden tools, when combined with the latest technology in seismic source quality, navigational positioning, and computational abilities, can deliver in real time high-resolution borehole seismic images that extend beyond the wellbore or into the interwell volume to reduce risk in drilling and development decisions

    This course provides a review of the latest tools, technologies, and applications of borehole seismic technology. A discussion of survery design and modeling is also included. This will provide an understanding of the applications of Borehole Seismic Data to Exploration, Reservoir Description, and Production.
    Day 1

    Geophysical Principles

    The seismic method-seismic response-basic concepts-reflection and refraction-velocity-seismogram -borehole vs surface seismic-types of borehole seismic.

    Sources and Tools

    Impulsive Sources (Airguns) - control systems - Non-impulsive sources (Vibros). Borehole seismic tools, classifications, characteristics - CSI and VSI

    Day 2

    Checkshot Sonic Calibration and Well Tie

    Velocities - The Sonic Tool - Sonic Scanner - Checkshot Survey - Drift - Sonic Calibration and Synthetic Seismogram

    VSP Processing

    Multiples - Processing Sequence - Stacking, Normalization & Filtering - Upgoing and Downgoing Energy - Deconvolution - Corridor Stack

    Day 3

    VSP Processing - Anisotropy and AVO

    Phase Matching - estimation of Q-Factor - concepts of anisotropy - Thomsen Parameters - AVO calibration - parameters from walkaway and walkaround VSP - parameters from other sources

    VSP Imaging

    Offset VSP coverage - Data Processing - NMO/CDP mapping - GRT migration - Walkaway VSP coverage - VSP in deviated wells - 2D and 3D VSP

    Day 4

    Survey Design and Modeling

    Practical and theoretical modeling concerns - basic modeling - ray tracing modeling

    Reservoir, Production, and Drilling Applications

    Salt proximity surveys - Aplanatic method - Deeplook CS - Time-Lapse BHS surveys - single well survey - seismic while drilling (SWD) - Look-ahead VSP - Borehole Microseismic surveys

    Day 5

    Examples

    Exercises

    Case Histories

    Geologists and Geophysicists who need an understanding of the principles, uses, and applications of Borehole Seismic Data

    Geophysical Principles

    Sources and Tools

    Check-shot/Sonic Calibration and Well Tie

    VSP Processing

    Anisotropy and AVO

    VSP Imaging

    Survey Design and Modeling

    Reservoir, Production & Drilling Applications

    Examples, Exercises, and Case Histories

    Basic understanding of Geology and of the Geophysical method

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