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The course is designed to familiarize the student with the basics of 3D Land seismic acquisition before moving on to cover the more recent developments: high channel-count single sensor (point receiver) simultaneous source – high productivity vibroseis, broadband techniques (boosting the low and high freqencies) and wireless nodal systems. Learning is supported through numerous case histories that illustrate the value of each acquisition technique. Central to the success of these techniques is how the surveys are designed to deliver fit-for-purpose data in a cost-effective manner.
In the second half of the course the students are taken through the principles of survey design. Learning is supported via hands-on practice where participants work together to design solutions to typical survey objectives and challenges.
At the end of the course, students will be familiar with: all current and emerging land seismic acquisition technology and techniques; the principles and workflows employed to design land seismic surveys; how to make a “first-pass” assessment of whether a proposed survey design will be successful and economic; and how and what to recommend as further areas of investigation if required.
Land Seismic Acquisition Technology
Learning objectives: Understand the basics of land acquisition: operations in a variety of different terrains and environments. Understand the typical 3D land acquisition geometries, the motivations behind them, their limitations and how they can be expressed with different attributes and metrics. Understand the concept of single sensor and single source acquisition vs arrays, and the consequences for data processing. Understand the characteristics of ambient and coherent noise, the importance of coherent noise sampling and how it can be filtered.Day 2
Land Seismic Acquisition Technology
Learning objectives: Understand the cost benefit of simultaneous source acquisition, the different methodologies, how and when they can be used to deliver improved data quality and/or more efficient operations, and the implications for data processing. Understand how broadband data improves resolution. Understand the importance of low frequencies and how they can be obtained in the field. Get an overview of wireless nodal systems and their impact on acquisition operations. Understand how to analyze operational efficiency and its parameters.Day 3
Survey Design Basics
Learning objectives: Understand the basic objectives and methods of land survey design. Understand how to use existing data and what constitutes a viable earth model for 1D seismic modeling. Understand the different types of resolution in seismic data required for successful interpretation and reservoir characterization. Understand how to determine basic acquisition parameters using a few simple equations starting from a 1D earth model.Day 4
Survey Design - Designing a 3D geometry
Learning objectives: Understand how to translate basic survey design parameters and objectives into a 3D acquisition geometry and how to choose between the different geometry options. Understand the relationship between acquisition geometry and modern time and depth imaging workflows.Day 5
Survey Design - New processing technology & Inversion
Learning objectives: Understand the requirements for important processing steps like noise attenuation, surface wave inversion and demultiple. Understand how new noise attenuation technology enables non-uniform survey layout and how new interpolation and compressive sensing technology can impact survey design. Understand the requirements that AVO, pre-stack inversion and AVOAz (fractures & stress) place on survey design.
Geophysicists with limited experience of seismic acquisition, or more experienced staff including Interpreters and Operational Geophysicists who need to keep up with the rapidly developing field of modern seismic acquisition techniques.
Foundation level Seismic Acquisition and Processing or equivalent practical experience of land seismic acquisition operations.
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