In the past (eg. 1950s), individuals with physics and mathematics degrees were trained to become geophysicists by companies and government institutions. Modern geoscience includes two major branches; geology and geophysics. Hundreds of universities across North America offer undergraduate BSc programs in geophysics. Geophysics can be defined as the mathematical approach to geology. It integrates both physics and natural geology into one subject matter. One of the most fundamental methods of geophysical data gathering is seismic survey.
Category Archives: Earth Science
Also known as Geology, Geosciences, etc. It is a science that deal with Geologic materials and processes which made them. A multidisciplinary field in which also includes Geophysics, Hydrology, Structure and Civil Engineering and many more.
What is a well log?
A well log, also known as a petrophysical log is similar to a cardiogram, which records electrical activity of your heart. An electrocardiogram (EKG or ECG) does not provide answers to hearth problems. It provides an outlook into the state of the heart. The EKG is interpreted by a medical doctor to provide solutions to heart problems.
A well log records physical, chemical and other petrophysical properties of Continue reading What is a well log?
Certificate and the Ring
It is March already and graduating students from Engineering and Geoscience programs in several provinces across Canada are excited to receive their professional certificates and the infamous rings. Future Engineers get their Iron Rings and the future Geologists and Geophysicists get their Earth Rings1.
Estimation of Q Factor
Estimation of Q Factor in Seismic Evaluations
Sanuja Senanayake
Geology Undergraduate Student: Winter 2015, University of Calgary.
Summary
The quality of seismic images varies with several parameters. Fundamentally, the signal strength plays a major role in the clarity of seismic images. By analyzing the signal quality quantitatively as opposed to qualitatively, we can correct the loss of signal strength over a distance and time. The Q factor is a mathematical representation of signal degeneration. It can be used to evaluate the original seismic wavelet from a distorted wavelet. There are several methods to derive the value of Q. But currently, there is no consensus among the geophysicists on which method is more accurate. In this particular study (Lupiancci, Andriano, Oliveira, 2015), researchers evaluated three methods; amplitude decay versus time decay, spectral ratio-based, and Wang’s method. After several iterations of the data, they found the Wang method to be more accurate and provided the most consistent dataset. However, it should be highlighted the spectral ratio-based method also provided very accurate results.
Careers Petroleum Geology
The terms “Petroleum Geology” and “Petroleum Engineering” have been around even before the modern boom in the oil and gas industry. But you should ask yourself, is there any difference between a Geologist and a Petroleum Geologist? Can a Professional Geologist perform the same tasks as a specialized Professional Petroleum Geologist? To answer these questions, we need to understand the basics of petroleum geology and why it is important to our modern-day energy needs.