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    Class and Course
    1. NExT
    2. Petrotechnical
    3. Borehole Seismic Acquisition, Processing and Operations

    Borehole Seismic Acquisition, Processing and Operations

    • Skill
    • 5 Days
    • Practical Training
      • Average client rating (based on 39 attendee reviews)

    This course gives an overview of all aspects of Borehole Seismic acquisition operations, survey design, and data processing techniques. A strong focus is placed on practical exercises, which are conducted using a test well at the SLB Training Centre and SLB Wireline Borehole Seismic equipment.

    The practical exercises will consist of running the Versatile Seismic Imager (VSI) with up to 3 x 3 component receivers in a 772 foot deep well and acquire Vertical Seismic Profile (VSP) data using an airgun source (Run 2). The airgun source will be a 3 x 150 cu.in. G-Gun cluster, deployed in a 5 m diameter, 5 m deep purpose built gun pit and will be operated with the TRISOR in-sea source controller. 

    A hybrid wireline cable will be used, allowing recording during the VSI run, heterodyne Distributed Vibration Sensing (hDVS) seismic data.

    For Run 1 the VSP will be acquired using a Vibrator as the energy source. The Vibrator is a Mertz M-18HD Vibrator buggy operated with the Pelton VibPro controllers.

    SLB’s VSI-MaxWell acquisition software will be used for Runs 1 & 2, and all QC features of the software will be used and shown to ensure optimisation of data quality. In one of the field practicals, the VSI tools will record in continuous mode as in microseismic surveys. One offset source will be deployed for tool 3-axes orientation. A Petrel 3D ray-tracing plugin and Omega Borehole Seismic software will be used during the data analyses demonstrations.

    The attendees are encouraged to assist with the rigging up/down of all equipment, Wireline Winch driving, data acquisition, and data analysis.
    Day 1

    Introduction to Borehole Seismic Principles

    • Borehole Seismic Principles and Applications

    • VSP Acquisition examples

    • VSP Processing examples

    Borehole Seismic Acquisition and Tools

    • Seismic Acquisition Equipment

    • Job planning & preparation – Offshore/Onshore

    Day 2

    VSP Acquisition – Vibroseis & Airgun

    • Operation Safety*
    • Rig-up VSI*
    • Vibro setup*
    • VSI Run in Hole
    • VSP Acquisition* - VSI & Vibroseis
    • Continuous recording with VSI (Microseismic mode)
    • Tool 3-axes orientation with offset source
    • Operation Safety*
    • Airgun setup*
    • VSI Run in Hole
    • VSP Acquisition* - VSI & Airguns
    • Run VSI to TD for hDVS acquisition*

    * Denotes at the wellsite

    Day 3

    hDVS Acquisition and Modelling

    • Operation Safety*
    • VSP Acquisition with hDVS*
    • Rig Down VSI*

    Wellsite and Post-Job Deliverables

    • Wellsite Acquisition Deliverables
    • Wellsite processing and Field Acquisition Report

    Borehole Seismic Modeling

    • Walkabove, Offset VSP, Walkaway and 3DVSP modeling
    • Microseismic modelling
    • Modelling Example – Practical
    Day 4

    Borehole Seismic Processing

    • VSP Workflow, Corridor Stack, Well to Seismic Tie

    • Exercise – Time correction and Sonic Drift

    • Reporting and Time Depth Computation

    • ZVSP processing workflow - Practical

    Advanced Operations

    • Navigation - Walkaway and Walkabove acquisition (SWINGS practical demo and classroom)*

    • 3D VSP

    • PAT (Portable Airgun Tank)

    Day 5

    Advanced Conveyance and Applications

    • TLC

    • Tractors

    • Through Drillpipe Seismic

    • SeismicVISION

    Advanced Processing and Applications

    • Imaging – Offset, Walkway, 3D-VSP

    • Q-Factor, Quantitative Borehole Matching

    • VSP Inversion (Acoustic Impedance, Full-Waveform)

    • Anisotropy

    • AVO-AVA

    • Microseismic advanced applications

    • Walkaway Imaging - Practical

    Applied geoscientists and operations geologists and geophysicists who need an understanding of the data acquisition, principles, multiple uses and applications of Borehole Seismic Data, including microseismic and the new fiber optics distributed seismic acquisition systems

    • Introduction to Borehole Seismic Principles
    • Borehole Seismic Acquisition and Tools
    • VSP Acquisition - Vibroseis
    • VSP Acquisition - Airgun
    • hDVS Acquisition
    • Borehole Seismic Modeling
    • Borehole Seismic Processing
    • Advanced Operations
    • Advanced Conveyance
    • Advanced Processing and Applications

    Basic understanding of petroleum geoscience, operations and of the geophysical methods.

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