0 Petroleum Geomechanics Information Rules Etc2011 2012
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Transcript of 0 Petroleum Geomechanics Information Rules Etc2011 2012
PETROLEUM GEOMECHANICS2011-2012
Chiara Deangeli
DITAG (DIATI) ground floor
011 090 7678
Office hours: email reservation necessary
Timetable
Monday Tuesday Thursday
11.30-13.00 14.30-16.00 13.00-14.30
Room 15 Room 15 Room 7B
PETROLEUM GEOMECHANICS2011-2012
Timetable
Monday
11.30-13.00
LAIB5D
from March 19 (LAIB5D)
Organization of the course
The course is organized in
•Lectures
•Practical lessons
•Computer exercises from March 19
Outline of the course
Introduction
Sedimentary rocks and rock masses
Stress, strain, pressure, strength, elasticity
Failure mechanicsFailure mechanics
Mechanical properties of rocks
In situ state of stress
Stresses around boreholes
Reservoir geomechanics
Date Subject Type hours
March 5 Introduction L 1,5
6 The state of stress. L 1,5
8 The state of stress: principal stresses; Mohr Circles;L 1,5
12 Principal stresses –Mohr circles. ExercisesE 1,5
13 The state of stress:
stress invariants; deviatoric stresses; fluid pressures; geostatic vertical
stresses
L 1,5
Detailed programme
stresses
15 The state of stress: the Terzaghi Principle; drained and undrained
conditions; Stress pathsL 1,5
19 Effective stresses and Determination of the state of stress LAIB 1,5
20 The state of strain; geometrical interpretation of infinitesimal strains L 1,5
22 Constitutive laws: Linear elasticity; ILE material L 1,5
26 Effective stresses – Stress paths LAIB 1,5
27 Constitutive laws: anisotropy; Non linear elasticity; Plasticity L 1,5
29 Solution of Continuum mechanics problems L 1,5
April 2 Effective stresses – Stress paths LAIB 1,5
3 Failure Mechanics: Strength of homogenous isotropic rock material L 1,5
Easter Holidays 5-11
12 Failure Mechanics: Strength of homogenous isotropic rock
material; Strength of anisotropic rock material in triaxial
compression
L 1,5
16 Failure Mechanics: the MC and HB criterion LAIB 1,5
17 Failure Mechanics: the MC and HB criterionE 1,5
19 Failure Mechanics: Shear Strength of rock discontinuities; Strength
of rock massesL 1,5
23 Stress paths LAIB 1,5
24 Mechanical properties of rock material from lab tests: Uniaxial
compression testsL 1,5
Date Subject Type hours
compression testsL 1,5
26 Mechanical properties of rock material from lab tests: Uniaxial
compression testsL 1,5
30 Uniaxial compression test LAIB 1,5
May 1: National Holiday
3 Mechanical properties of rock material from lab tests: triaxial tests
dry conditionsL 1,5
7 Uniaxial compression test LAIB 1,5
8 Mechanical properties of rock material from lab tests: triaxial tests
in drained and undrained conditions; L 1,5
10 Mechanical properties of rock material from lab tests: triaxial tests
in drained and undrained conditionsL 1,5
14 Interpretation of direct shear tests on rock discontinuities LAIB 1,5
15 Interpretation of TX Test L 1,5
16 Determination of elastic moduli and strength parameters from lab
testsL 1,5
21 Triaxial compression tests. TSP and ESP from TX tests LAIB 1,5
22 Skempton coefficients L 1,5
24 Mechanical properties of rock material from lab tests: Oedometer
test Index testsL 1,5
28 Underground stresses L 1,5
29 Underground stresses L 1,5
Date Subject Type hours
29 Underground stresses L 1,5
31 Stresses around boreholes L 1,5
June 4 Triaxial compression tests. TSP and ESP from TX tests LAIB 1,5
5 Stresses around boreholes L 1,5
7 Stresses around boreholes L 1,5
11 Determination of the state of stress around boreholes LAIB 1,5
12 Principles of hydraulic fracturing L 1,5
14 Reservoir Geomechanics L 1,5
Outcomes
Acquire a basic knowledge in the geomechanics field in
order:
• To understand, from an engineering point of view, the
processes related to the mechanical aspects ofprocesses related to the mechanical aspects of
sedimentary rocks, during hydrocarbon production
• To handle basic problems related to the mechanical
behavior of rocks
Reference textbooks• Fjaer, Holt, Horsrud, Raaen & Risnes, 2008. Petroleum
related Rock Mechanics, 2nd edition, Elsevier, Oxford
• Brady & Brown, 2004. Rock Mechanics, 3rd edition, Kluwer
Academic Publisher, Dordrecht
• Lambe & Withman, 1979 Soil Mechanics, John Wiley & Sons,• Lambe & Withman, 1979 Soil Mechanics, John Wiley & Sons,
New York
• Lancellotta, 2009. Geotechnical Engineering,, 2nd edition,
Taylor & Francis, New York
• Zoback, 2007. Reservoir Geomechanics, Cambridge
University Press, New York
Didactic material
The texts, equations and figures shown during lectures
will be available on the course web site.
The solution to the exercises will also be available in
the course web site.the course web site.
All of my lectures will be delivered with the help of PowerPoint. All the
presentations will be available on the course web site.
So, if all the material is on the web and in books, why attend classes?
Caution: The presentations contain only essential notes and
illustrative material. They should enrich the narrative, but cannot
Attendance
really replace it. If you are not in class, you may miss explanations,
descriptions, discussion and other stuff that is supposed to make you
understand the material. That is why we still have a physical
university.
What should I do then?
1)Attend classes 2) keep your own notes 3) Ask questions, participate
The subjects of the course are explained during the
lectures and practical lessons. Thus the majority of
questions must be asked in class.
The office hours MUST NOT be intended as private
Attendance
The office hours MUST NOT be intended as private
lessons.
After the explanation of a topic some practical
examples are presented.
You must bring a pocket calculator, in order to solve
the exercises.
Attendance
the exercises.
Computer exercises at LAIB.
The exercises are uploaded on course web site just before
the class.
The explanation of the exercises starts at 11.30.
After the explanation the students can download the
exercises.
Attendance
exercises.
The solution to the exercises must be sent by email to the
Professor 5 minutes before the end of the lesson.
Examination
The EXAM consists of a written test with:
• Theoretical questions (15 points)
• Practical exercises (15 points)
Examination
Since the Petroleum Geomechanics Course is attached
to the Structural Mechanics Course, the final mark of
the complete exam will be the arithmetic mean of the
two partial marks (minimum partial mark for both tests:two partial marks (minimum partial mark for both tests:
18)
30 cum laude (only when the total sum of the two exams is 60) plus 1 oral
question
Examination Policy
The use of a pocket calculator is allowed.
The use of the following material is NOTallowed:allowed:
• (PDAs) personal digital assistants, palmtop computers, orsimilar mobile devices
• Mobile phones
• Didactic material (books, written texts, class notes, etc..)
Examination Policy
No communication regarding the examination is allowed
inside or outside the room. All questions about the
examination should be directed to the Professor.
It is mandatory to register for the exam. There are deadlinesIt is mandatory to register for the exam. There are deadlines
for the registration.
I do not accept late email registration