Our one-hour course is designed for industry colleagues, professionals, and clients who are interested in learning more about borehole geophysics. Students will learn what borehole geophysical logging is, its role in the development and refinement of a conceptual site model (CSM), and the applications of different tools in environmental site remediation. The material serves to advance the technical knowledge of the attendees by tackling issues concerning bedding attitude assessment, lithology of bedrock and unconsolidated deposits, borehole deviation, cross flow hydraulics in a borehole, and location and transmissivities of water-bearing fractures in a well. The instructors aim to help the attendees think about the challenges they face and the potential advantage of borehole geophysics on their sites. Borehole geophysics can serve to update a CSM to reflect the current state of scientific knowledge, professional practice, and regulatory guidance.

WHAT WILL BE  COVERED?

• Natural Gamma, Electrical & Electromagnetic Logs
• lithology, stratigraphic correlation, area-wide structure
• ​Caliper Logs borehole condition, the initial identification of fractures
• Fluid Logs initial indicators of groundwater quality and the vertical positions of hydraulically active fractures
• Image Logs (acoustic and optical televiewers) refine lithology, quantify structural attitude of planar features, assess lateral continuity of fracture zones, observe visually evident features such as NAPL streaming or staining
• Flow-Meter Logs qualitative and quantitative use, ambient & pumping conditions, characterize individual conductive fractures or zones intersecting the borehole
• Water-Quality Logs representative grab sampling at in-flow zones, continuous vertical profiling of redox indicator parameters

WHAT WILL I LEARN?

• What is borehole geophysical logging?
• Definition
• Background
• General utility & limitations
• What problems it can help solve?
• CSM development, review, & refinement
• Fractured bedrock & unconsolidated examples
• Additional lines of evidence to support decision making
• How is it used?
• What each method measures interpretation – independent & synergistic
• Project workflow
• Data management to leverage use of logging data