In this module, you will learn about the useful types of information contained in a recorded seismic wave and how that information is utilized during processing. We discuss how seismic information is convoluted with various types of noise and we discuss techniques such as “common midpoint gathering” that increase the useful signal and reduce the noise. You will see examples of both onshore and offshore raw “shot gathers” and we discuss common steps to get from a shot gather to a useful seismic image. We also discuss how seismic processing is correlated with other available information about an area, such as well logs.

Duration: Approximately 35 minutes, depending on user pace. In two modules: 14A (18 minutes) and 14B (17 minutes).

Learning Objectives: Upon successful completion of this module, you will be able to:

• Discuss how seismic data is recorded on trace lines and the information that can be obtained from those traces
• Summarize seismic wave amplitude, frequency and polarity and the information conveyed by those characteristics
• List types of seismic noise and convey how noise complicates processing
• Describe techniques to reduce seismic noise such as filtering and common midpoint gathers
• Recount an example shown of the key steps involved in seismic processing, beginning with a shot gather and ending with a processed image

Prerequisites: Module 1-13

Advance Preparation: None

Program Level: Non-technical

Format: Prerecorded narrator with supporting visuals. User controls course pace.