To explain some basics of reservoir characterization

1. A New Approach in Hydraulic Flow
Unit Determination and its Application
for Prediction of Petrophysical
Properties
By:
Mohammad Izadi
Supervisor: Dr Ali Ghalambor

2. Contents:
1) Introduction
2) Literature Review
3) Approach
4) Scope of the work

3. Introduction:
A New Approach in Hydraulic FlowHydraulic Flow
UnitUnit Determination and its
Application for Prediction
of Petrophysical PropertiesPetrophysical Properties

4. Introduction:
Definitions………
Reservoir Characterization
Rock Typing
Hydraulic Flow Unit

5. Reservoir Characterization
An integration of available data to define the geometrygeometry,
distributiondistribution of physical parameters and flow propertiesflow properties of
a petroleum reservoir.
Available Data
Time
Cum
P

6. Rock Typing
Archie (1950):
Units of rock deposited under similar
conditions which experienced similar
diagenetic processes resulting in a unique
porosity- permeability relationship, capillary
pressure profile and water saturation for a
given height above free water in a reservoir.

7. Rock type categories:
- Depositional:
Rock types according to similarities in compositions,
texture, sedimentary structure and stratigraphic
sequence as influenced by the depositional environment.
- Petrographic:
Rock types based on microscopic imaging of pore
structure as well as texture and composition, clay
mineralogy, and diagenesis.

8. - Hydraulic:
At pore scale level, those rock types
according to the physical flow and
storage properties of the rock relative to
the native fluid as controlled by the
dimensions, geometry and distribution
of the current pore and pore throat
structure.
Hydraulic Flow UnitHydraulic Flow Unit

9. Rock typing procedure:
Large scale Pore scale
1) Basin Analysis ( depositional environment, sand body
geometry by core)
2) Physical core description to evaluate texture,
composition, lithology and diagnosis
3) Routine and special core analysis to end up with
pore and pore throat size

10. Hydraulic Flow Unit
Volume of the total reservoir rock within which
geological and petrophysical properties that
affect fluid flow are internally consistent.
Rock type

11. Literature Review
* Ebanks (1987) defined the fundamental concepts
of flow units
* Slatt and Hopkins (1990), Ahr (1991), and Stoudt
et al. (1992) used qualitative techniques, to define
flow units.
*Amaefule et al. (1993) did comparative studies
and proposed a common method for determination
of hydraulic flow units

12. Literature Review (Cont.)
* Gunter et al. (1997) reported Lorenz plot to
define hydraulic flow units ( plot of percent flow
capacity versus percent storage capacity of every
stratigraphy sequence)
Many authors proposed different methods based
on Amaefule model and concluded various
results.

13. Approach
In this work, we propose a approach to hydraulic flow unit
identification using common Amaefule method.
Amaefule or FZI method:
FZIRQI zφ=
Reservoir Quality Index
Normalized Porosity
Flow zone
indicator

14. Approach (Cont.)
( )
1
0.0314
1
e
e e s gv
k
F S
φ
φ φ τ
 
=  
−  
RQI
Normalized Porosity
FZI
S gv : surface area per unit grain volume
sF τ : Kozeny term

15. Approach (Cont.)
How to get to the approach?
Mathematical Modeling:
It will be formulated according to Amaefule approach with
Different Boundary Condition but same assumptions. In
another word, a new term will be defined and
mathematically obtained.

16. Scope of the work:
1)Mathematical Modeling ( Done)
2)Experiments ( Routine and Special Core
Analysis)
3)Validating with experiments?
4) Up scaling with well log suite

17. Thank you
Questions???