01 Formation Evaluation

Introduction and Oil Distribution00:00:00

The speaker introduces the course objectives, explaining that it focuses on methods used in oil and gas exploration and terminology to improve production from hydrocarbon reserves.

Geological Criteria and Exploration00:00:40

The video explains that oil and gas are found in specific geographic areas, using the US map and Texas as examples of major reserves.

Geophysical Studies00:01:51

The speaker discusses the need for geological and geophysical studies, including gravity metry, magnetometry, and the seismic method to image the subsurface.

Drilling and Formation Evaluation00:06:33

This section covers the importance of drilling wells to measure rock properties and take fluid samples, a process termed formation evaluation.

Well Logging Tools00:07:44

An explanation of well logging, where sensors (sondes) are sent down a borehole to measure petrophysical properties like gamma ray emission and resistivity.

Interpreting Logging Data00:09:53

The speaker demonstrates how to interpret subsurface data using gamma ray and resistivity logs to distinguish between shale and sandstone, and to identify hydrocarbon-saturated zones versus brine.

Recovery Factor and Production00:16:03

Discussion on the recovery factor, explaining that not all hydrocarbons are producible and that engineers develop strategies to optimize production based on reservoir conditions.

Course Curriculum and Modules00:19:39

The speaker outlines the course modules, including SP logs, gamma ray logs, resistivity, neutron/density/sonic logs, and NMR, as well as a lab session using real data.