COURSE OVERVIEW:

Pulsed Neutron logging has revolutionized the way operators monitor reservoir saturation and evaluate formations behind casing. This course provides a foundational understanding of the physics of neutron interactions and how these principles are applied to identify bypassed hydrocarbons. Participants will explore the fundamental measurements of Sigma (thermal neutron capture cross section) and how they are used to differentiate between saline formation water and oil.

The scope of the training includes an introduction to the hardware components of pulsed neutron tools and the operational requirements for data acquisition in cased hole environments. Detailed focus is given to the qualitative interpretation of log curves to identify fluid contacts and gas caps without the need for open hole data. By understanding the environmental effects of casing, cement, and borehole fluids, engineers can better assess the reliability of the saturation data collected.

Coverage also includes an overview of the Carbon Oxygen (C/O) ratio measurement, which is critical for evaluating reservoirs with fresh or unknown water salinity. The course emphasizes the importance of baseline logging and time lapse analysis in tracking reservoir depletion. Through practical examples, participants will learn how to integrate pulsed neutron results into routine well integrity and reservoir management workflows to optimize production from mature fields.

COURSE OBJECTIVES:

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

• Explain the basic physics of neutron generation and capture in the subsurface.
• Define the concept of Sigma and its relationship to formation fluid types.
• Identify the components and configuration of a standard pulsed neutron tool string.
• Differentiate between Sigma mode and Carbon Oxygen (C/O) mode applications.
• Interpret pulsed neutron logs qualitatively to locate oil water and gas oil contacts.
• Assess the impact of casing and cement quality on neutron log responses.
• Calculate water saturation in high salinity environments using the Sigma equation.
• Recognize the signatures of gas presence and gas depletion on neutron logs.
• Understand the requirements for successful data acquisition and quality control.
• Utilize time lapse logging techniques to monitor reservoir drainage over time.
• Evaluate the suitability of a well for pulsed neutron evaluation based on completion.
• Communicate the value of cased hole evaluation to reservoir management teams.
• Identify bypassed oil zones in mature fields for potential re completion.

TARGET AUDIENCE:

Petrophysicists, Reservoir Engineers, Production Engineers, and Geologists who are new to cased hole evaluation or require a refresher on pulsed neutron basics.

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.