US2024003251A1PendingUtilityA1
Determining Spatial Permeability From A Formation Tester
Assignee: HALLIBURTON ENERGY SERVICES INCPriority: Jun 30, 2022Filed: Jan 20, 2023Published: Jan 4, 2024
Est. expiryJun 30, 2042(~15.9 yrs left)· nominal 20-yr term from priority
Inventors:Rohin Naveena-ChandranSyed Muhammad Farrukh HamzaBin DaiVinay K. MishraBryan J. MoodyRojelio MedinaJason A. Rogers
E21B 2200/22E21B 49/0875E21B 49/10E21B 2200/20
45
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Claims
Abstract
A method and system for determining a bed permeability. As disclosed, a fluid sampling tool may be disposed into a wellbore at a first location. The method may further include taking a drawdown and build up measurement with the fluid sampling tool, measuring a relative dip angle from the fluid sampling tool, calculating a bed anisotropy from the drawdown and build up measurement and the relative dip angle, calculating a bed mobility from the bed anisotropy, and calculating a bed permeability from the bed mobility and a viscosity.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method comprising:
disposing a fluid sampling tool into a wellbore at a first location; taking a drawdown and build up measurement with the fluid sampling tool; measuring a relative dip angle from the fluid sampling tool; calculating a bed anisotropy from the drawdown and build up measurement and the relative dip angle; calculating a bed mobility from the bed anisotropy; and calculating a bed permeability from the bed mobility and a viscosity.
2 . The method of claim 1 , wherein the relative dip angle is measured from a horizontal plane emanating from the fluid sampling tool to a bed boundary.
3 . The method of claim 1 , wherein a pressure in the x direction and a mobility in the x direction are found from the drawdown and build up measurement.
4 . The method of claim 1 , wherein the viscosity is measured from a mud filtrate or reservoir fluid.
5 . A method comprising:
disposing a first fluid sampling tool and a second fluid sampling tool into a wellbore, wherein the first sampling tool and the second fluid sampling tool are orthogonal to each other; taking a first drawdown and build up measurement with the first fluid sampling tool in an x direction; taking a second drawdown and build up measuring with the second fluid sampling too in the z direction; measuring a first relative dip angle from the first fluid sampling tool; measuring a second relative dip angle from the second fluid sampling tool; identifying a stratigraphic angle from a database; calculating a bed anisotropy from the first drawdown and build up measurement, the second drawdown and build up measurement, the first relative dip angle, the second relative dip angle, and the stratigraphic angle; calculating a bed mobility from the bed anisotropy; and calculating a spatial permeability from the bed mobility and a viscosity.
6 . The method of claim 5 , wherein the first relative dip angle is measured from a first horizontal plane emanating from the first fluid sampling tool to a bed boundary.
7 . The method of claim 6 , wherein the second relative dip angle is measured from a second horizontal plane emanating from the second fluid sampling tool to a bed boundary.
8 . The method of claim 5 , wherein a pressure in the x direction and a mobility in the x direction are found from the first drawdown and build up measurement.
9 . The method of claim 5 , wherein a pressure in the z direction and a mobility in the z direction are found from the second drawdown and build up measurement.
10 . The method of claim 5 , wherein the viscosity is measured from a mud filtrate or reservoir fluid.
11 . A system comprising:
a first fluid sampling tool comprising a first sampling probe section, wherein the first sampling probe section performs a first drawdown and build up measurement with the first fluid sampling tool in an x direction; a second fluid sampling tool comprising a second sampling probe section and disposed orthogonal on a conveyance to the first fluid sampling tool, wherein the second fluid sampling tool performs a second drawdown and build up measuring with the second fluid sampling too in the z direction; and an information handling system connected to the first fluid sampling tool and the second fluid sampling tool and configured to:
identify a first relative dip angle from the first fluid sampling tool from the first fluid sampling tool or a database;
identify a second relative dip angle from the second fluid sampling tool from the first fluid sampling tool or the database;
identify a stratigraphic angle from the database;
calculate a bed anisotropy from the first drawdown and build up measurement, the second drawdown and build up measurement, the first relative dip angle, the second relative dip angle, and the stratigraphic angle;
calculate a bed mobility from the bed anisotropy; and
calculate a spatial permeability from the bed mobility and a viscosity.
12 . The system of claim 11 , wherein the first relative dip angle is measured from a first horizontal plane emanating from the first fluid sampling tool to a bed boundary.
13 . The system of claim 12 , wherein the second relative dip angle is measured from a second horizontal plane emanating from the second fluid sampling tool to a bed boundary.
14 . The system of claim 11 , wherein a pressure in the x direction and a mobility in the x direction are found from the first drawdown and build up measurement.
15 . The system of claim 11 , wherein a pressure in the z direction and a mobility in the z direction are found from the second drawdown and build up measurement.
16 . The system of claim 11 , wherein the viscosity is measured from a mud filtrate or reservoir fluid.
17 . The system of claim 11 , wherein the spatial mobility is calculated using
M
spatial
=
❘
"\[LeftBracketingBar]"
M
x
M
Bed
M
Strat
M
z
❘
"\[RightBracketingBar]"
,
where M x is a mobility of a fluid in the x direction, Mz is the mobility of the fluid in the z direction, M bed is the mobility of the fluid in a bed, and M strat is the mobility of the fluid in the stratigraphic plane.
18 . The system of claim 17 , wherein M strat is calculated using
M
Strat
=
F
x
F
z
M
z
,
wherein F x is a force of the fluid exerted in the x direction and Fz is a force of the fluid exerted in the z direction.
19 . The system of claim 17 , wherein M Bed is calculated using
M
Bed
=
F
y
F
x
M
x
,
wherein F y is a force of the fluid exerted in the y direction and F x is a force of the fluid exerted in the x direction.
20 . The system of claim 11 , wherein the database is populated from one or more measurements from one or more wellbores.Join the waitlist — get patent alerts
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