Skip to main content

Reservoir Geomechanics PET665

Determination of mechanical strength and state of stress is critical to ensure the integrity of boreholes, reservoirs and caprock during drilling, production and injection. These geomechanical parameters can be obtained in the laboratory through a series of mechanical tests on the core samples. However, the data collected from the laboratory measurements must be upscaled to the field condition and used for the continuous evaluation of geological structures during different stages of field development. Thus, apart from the fundamental concepts of geomechanics (including the failure mechanisms of rocks), approaches that can accurately determine the mechanical behavior of formations on the field scale must be understood.


Course description for study year 2021-2022. Please note that changes may occur.

Facts
Course code

PET665

Credits (ECTS)

10

Semester tution start

Autumn

Number of semesters

1

Exam semester

Autumn

Language of instruction

English

Offered by

Faculty of Science and Technology, Department of Energy Resources

Learning outcome
  1. Learning the fundamental concepts of Geomechanics and their applications under different subsurface conditions.
  2. Understanding the laboratory experiments and how to obtain the mechanical properties of rocks.
  3. Comprehending the concepts of in-situ, induced and effective stresses.
  4. Highlighting the applications of Geomechanics in the key areas of petroleum engineering ranging from drilling to production and EOR / IOR processes.
  5. Performing wellbore stability analysis for safe mud weight determination. 
  6. Grasping the concept of hydraulic fracturing in conventional and unconventional reservoirs.

Content
Determination of elastic and strength properties of rocks, variation of in-situ stresses and likelihood of failure in different geological formations is an essential part of any drilling, production and IOR / IOR studies. In this course, attempts are made to introduce the fundamental concepts of geomechanics (theories of elasticity / plasticity, failure mechanisms and acoustic wave propagation) and show their application in different areas of petroleum engineering. This will be followed by determination of rock mechanical properties in the laboratory scales where many of the methods conventionally used to determine the elastic and strength properties of rocks will be presented. Having understood the basics of laboratory scale measurements, direct and indirect methods to determine geomechanical properties on the field scale will be presented where the pros and cons of each methods are highlighted. To further understand the application of laboratory and field scale measurements, safe mud weight window determination based on the industrial accepted methods are practiced using real field data of Norway. This will be further followed by going into the concept of hydraulic fracturing in conventional and unconventional reservoirs where certain operational challenges related to geomechanics will be tackled. The course will be finally ended by providing an in-depth insight into the mechanism of sand production in unconsolidated reservoirs and the possible mitigation approaches developed. To further understand the application of laboratory and field scale measurements, safe mud weight window determination based on the industrial accepted methods are practiced using real field data of Norway. This will be further followed by going into the concept of hydraulic fracturing in conventional and unconventional reservoirs where certain operational challenges related to geomechanics will be tackled. The course will be finally ended by providing an in-depth insight into the mechanism of sand production in unconsolidated reservoirs and the possible mitigation approaches developed. To further understand the application of laboratory and field scale measurements, safe mud weight window determination based on the industrial accepted methods are practiced using real field data of Norway. This will be further followed by going into the concept of hydraulic fracturing in conventional and unconventional reservoirs where certain operational challenges related to geomechanics will be tackled. The course will be finally ended by providing an in-depth insight into the mechanism of sand production in unconsolidated reservoirs and the possible mitigation approaches developed. This will be further followed by going into the concept of hydraulic fracturing in conventional and unconventional reservoirs where certain operational challenges related to geomechanics will be tackled. The course will be finally ended by providing an in-depth insight into the mechanism of sand production in unconsolidated reservoirs and the possible mitigation approaches developed. This will be further followed by going into the concept of hydraulic fracturing in conventional and unconventional reservoirs where certain operational challenges related to geomechanics will be tackled. The course will be finally ended by providing an in-depth insight into the mechanism of sand production in unconsolidated reservoirs and the possible mitigation approaches developed.
Required prerequisite knowledge
Basic knowledge of mathematics and physics is required.
Exam

Mid-term home-exam and a group project report

Form of assessment Weight Duration Marks Aid
Mid-term home-exam 40/100 12 Hours A - F All.
Group project report 60/100 A - F All.

This course has a continouos assessement consisting of a mid-term exam and a project report conducted in a group of students. The mid-term exam counts for 40% of the total grade, and the project reports counts for 60% of the total grade.

If a student fail the mid-term exam, he or she may register for the re-sit exam the following semester. There is no re-sit option for the report. Students who fail or wish to improve the grade of the report must take submit a new report the following year.

Course teacher(s)
Course coordinator: Raoof Gholami
Course teacher: Raoof Gholami
Course coordinator: Raoof Gholami
Head of Department: Alejandro Escalona Varela
Method of work
Lectures and exercises. The exercises are not mandatory, but recommended. Projects are used for evaluation.
Open for
Computational Engineering, Master's Degree Programme Petroleum Engineering - Master of Science Degree Programme Petroleum Engineering - Master`s Degree programme in Petroleum Engineering, 5 years
Course assessment
Form and/or discussion according to UiS standards.
Literature
Search for literature in Leganto