Introduction first starts by explaining sedimentation of reservoir rocks. Then it moves on to trap elements and responsibilities of a reservoir engineer.

1. Introduction to Reservoir
Engineering (RE)
SPE ASOIU Chapter
By Farida Ismayilova
Farida Ismayilova

2. Advice:
▪ Ask questions during the presentation
▪ Take notes
▪ Demand further explanations or
translations

3. What is a reservoir?
▪ What is a rock?

4. *Reservoir engineer- istismar
mühəndisi/инженер-разработчик
*Reservoir-hovuz/ бассейн
*Rock-dağ süxuru/горная порода
*Weathering-aşınma/эрозия
*Glacier- buzlaq/ледник
*Erosion-eroziya/ эрозия
*Deposition-çökmə/осаждение
Glossary

5. *Compaction-sıxlaşma/ уплотнение
*Sediment-çöküntü/ осадок
*Sedimentary rock-çökmə süxur/
осадочная порода
*Cap rock-örtük süxur/ герметизирующая
порода
*Source rock-ana süxur/ материнская
горная порода
*Migration-yerdəyişmə/перемещение

6. Rock
Rock or stone is a
naturally occurring solid
aggregate of one or more
minerals.

7. What is a reservoir?
✓ What is a rock?
✓ How does it form?

8. Stages of rock formation
▪ Weathering
▪ Erosion
▪ Deposition
▪ Compaction

10. Weathering
A chemical (A) or
mechanical (B)
process by which
rock or soil is
gradually
destroyed.
A
B

11. Weathering agents:
▪ Water
▪ Wind
▪ Ice (glaciers)

12. Water

13. Wind

14. Ice (glacier)

15. Erosion
The carrying away of weathered soil, rock
and other materials on the Earth’s surface
by:
▪ Water
▪ Wind
▪ Gravity

16. Deposition
Deposition is the geological process in
which sediments, soil and rocks are added
to a landform or land mass. Wind, ice, and
water, as well as sediment flowing via
gravity, transport previously eroded
sediment, which, at the loss of enough
kinetic energy in the fluid, is deposited,
building up layers of sediment.

17. Compaction
The process of the mineral grains of the rock being
squeezed together by the weight of overlying
sediment or by mechanical means.
Sedimentary rock - rock that has formed through the deposition
and solidification of sediments (eroded particles/grains)

19. Reservoir
A petroleum
reservoir or oil and
gas reservoir is a
subsurface pool of
hydrocarbons
contained in porous
rock formations
(sedimentary rocks).
pores=space between
rock particles
rock

20. Mostly hydrocarbons (HC) are not
found at the place from where they
originate.
Source rock – the rock where trapped organic
material turn into HCs under certain temperature
and pressure.
Migration – the movement of HCs from the source
rock to the reservoir rock.
Cap/sealing/impermeable rock – the rock that
prevents further HC migration.

22. Reservoir types
▪ Oil + gas
▪ Pure gas
▪ Gas hydrate

23. ✓What is a reservoir?
✓ What is a rock?
✓ How does it form?
What does a reservoir engineer
do?

24. Reservoir Engineer
Reservoir engineers evaluate field performance by
performing reservoir modeling studies and explore
opportunities to maximize the value of both
exploration and production properties to enhance
hydrocarbon production.

25. ▪ Estimating reserves and forecasting for property evaluations
and development planning.
▪ Carrying out reservoir simulation studies to optimize
recoveries.
▪ Predicting reserves and performance for well proposals.
▪ Predicting and evaluating waterflood and enhanced recovery
performance.
▪ Developing and applying reservoir optimization techniques.
RE responsibilities:

26. RE responsibilities:
▪Developing cost-effective reservoir monitoring and surveillance
programs.
▪ Performing reservoir characterization studies.
▪ Analyzing pressure transients.
▪ Designing and coordinating petrophysical studies.
▪ Analyzing the economics and risk assessments of major
development programs.
▪ Estimating reserves for producing properties

27. ✓What is a reservoir?
✓ What is a rock?
✓ How does it form?
✓What does a reservoir
engineer do?

28. Thank you