Method, program and computer system for conciliating hydrocarbon reservoir model data
A method and system for conciliating hydrocarbon reservoir model data. In one implementation, a set of local permeability values of a reservoir and an apparent permeability value of the reservoir are provided. A power value is numerically calculated from a mean power formula that relates the apparent permeability value of the reservoir to the local permeability values of the set via the power. The calculated power value is compared with a reference value. Depending on the outcome of the comparison, the set of local permeability values is modified.
1. A method for conciliating hydrocarbon reservoir model data, the method comprising:
providing a set of local permeabilities values k H i of a reservoir and an apparent permeability value K H of the reservoir using a computer;
calculating, using the computer, a power value ω H from a mean power formula,
K
H
ω
H
=
1
N
×
∑
i
=
1
i
=
N
k
H
i
ω
H
,
relating the apparent permeability value K H to the set of local permeabilities values k H i via the power value ω H , wherein N is an integer, and from the set of local permeabilities values k H i and the apparent permeability value K H ;
comparing the power value ω H with a reference value using the computer;
modifying the set of local permeabilities values k H i and the apparent permeability values K H using the computer to obtain the conciliated hydrocarbon reservoir model data;
changing a scale of the set of the local permeability values k H i , based on the power value ω H ; and
estimating a characteristic of the reservoir using a result from the scale changed based on the power value ω H .
2. The method according to claim 1 , wherein the power value ω H is calculated based on a relationship,
K
H
ω
H
=
f
(
{
k
H
i
ω
H
}
i
=
1
,
N
)
.
3. The method according to claim 1 , wherein the apparent permeability value K H is relative to a direction distinct from a direction of a well of the reservoir.
4. The method according to claim 3 further comprising:
providing a spatial correlation value L V of the reservoir along the direction of the well; and
calculating a spatial correlation value L H along the direction of the apparent permeability value K H , from the power value ω H , expressed as a function of the spatial correlation values L V , L H .
5. The method according to claim 4 , wherein the power value ω H is further a function of a petrophysical anisotropy k V /k H of the reservoir.
6. The method according to claim 5 , wherein the power value ω H is expressed as:
ω
h
=
Arctan
α
π
-
Arctan
α
,
wherein
α
=
L
H
L
V
×
k
V
k
H
,
the ratio k V /k H being a characteristic of the petrophysical anisotropy.
7. The method according to claim 3 , wherein the direction distinct from the direction of the well is perpendicular to the direction of the well.
8. The method according to claim 1 further comprising:
calculating a power value ω V relative to a vertical apparent permeability value K V , the power value ω V being expressed as ω V =aω H +b, wherein a and b are constants.
9. A method for conciliating hydrocarbon reservoir model data, the method comprising:
providing a set of local permeabilities values of a reservoir and an apparent permeability value of the reservoir using a computer;
calculating a power value from a mean power formula and the set of local permeabilities values and the apparent permeability value using the computer, the mean power formula relating the apparent permeability value to the set of local permeabilities values via the power value;
comparing the power value with a reference value using the computer;
modifying the set of local permeabilities values and the apparent permeability values using the computer to obtain the conciliated hydrocarbon reservoir model data;
changing a scale of the set of the local permeability values, based on the power value; and
estimating a characteristic of the reservoir using a result from the scale changed based on the power value.
10. A non-transitory computer readable storage medium encoding a computer executable program for executing a process, the process comprising:
providing a set of local permeabilities values of a reservoir and an apparent permeability value of the reservoir;
calculating a power value from a mean power formula and the set of local permeabilities values and the apparent permeability value, the mean power formula relating the apparent permeability value to the set of local permeabilities values via the power value;
comparing the power value with a reference value;
modifying the set of local permeabilities values and the apparent permeability values to obtain the conciliated hydrocarbon reservoir model data;
changing a scale of the set of the local permeability values, based on the power value; and
estimating a characteristic of the reservoir using a result from the scale changed based on the power value.