COURSE OVERVIEW:

Borehole Geophysics and Logging Fundamentals is a critical technical course designed to bridge the gap between surface measurements and subsurface reality. This course focuses on the physics behind wireline and Logging While Drilling (LWD) tools used to evaluate the physical properties of the formations encountered during drilling. By understanding how different sensors interact with the rock and its pore fluids, participants can accurately determine lithology, porosity, and hydrocarbon saturation, which are the primary drivers of commercial value.

The scope of this training includes a detailed review of radioactive, acoustic, and electrical logging methods. Participants will learn the operational constraints and physical principles of Gamma Ray, Density, Neutron, and Resistivity tools. The course also addresses the importance of borehole environment corrections, such as mud filtrate invasion and hole rugosity, which can significantly distort raw measurements. This foundational knowledge ensures that geoscientists can distinguish between genuine geological signals and artifacts introduced by the drilling process.

Furthermore, the course covers the integration of borehole geophysics with seismic data through the creation of synthetic seismograms. Participants will explore how sonic and density logs are used to calculate acoustic impedance and reflection coefficients, allowing for the precise calibration of time-based seismic images to depth-based well data. By the end of this course, attendees will be proficient in interpreting basic log suites and understanding how these measurements contribute to the overall characterization of the petroleum system.

COURSE OBJECTIVES:

After completion of this course, the participants will be able to:

• Explain the physical principles of radioactive, electrical, and acoustic logging tools.
• Differentiate between Wireline and Logging While Drilling (LWD) technologies.
• Identify lithology and stratigraphic boundaries using Gamma Ray and SP logs.
• Calculate formation porosity using Density, Neutron, and Sonic log data.
• Determine fluid saturation and identify hydrocarbon-water contacts using Resistivity.
• Perform borehole environmental corrections for various mud types and hole sizes.
• Utilize the Archie equation and its components for water saturation modeling.
• Recognize the signatures of different clay minerals on spectral gamma ray logs.
• Interpret borehole images to identify fractures, faults, and bedding dips.
• Construct synthetic seismograms to tie well data to seismic reflections.
• Evaluate the quality and reliability of log data through rigorous QC procedures.
• Explain the role of pressure testing and fluid sampling in borehole geophysics.
• Integrate multiple log curves to perform basic multi-mineral lithology analysis.

TARGET AUDIENCE:

Petrophysicists, Geologists, Geophysicists, and Petroleum Engineers who require a solid understanding of well-log acquisition and interpretation.

TRAINING COURSE METHODOLOGY:

A highly interactive combination of lectures, discussion sessions, and case studies will be employed to maximise the transfer of information, knowledge, and experience. The course will be intensive, practical, and highly interactive. The sessions will start by raising the most relevant questions and motivating everybody to find the right answers. The attendants will also be encouraged to raise more of their questions and to share in developing the right answers using their analysis and experience. There will also be some indoor experiential activities to enhance the learning experience. Course material will be provided in PowerPoint, with necessary animations, learning videos, and general discussions.

The course participants shall be evaluated before, during, and at the end of the course.

COURSE CERTIFICATE:

National Consultant Centre for Training LLC (NCC) will issue an Attendance Certificate to all participants completing a minimum of 80% of the total attendance time requirement.