US4703277A
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Method and apparatus for obtaining properties of subsurface formations from textural models derived from formation parameters
Assignee: Schlumberger Technology Corp
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Filing: 1984-04-13
•
Granted: 1987-10-27
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Expires: 2004-04-13
Abstract
Abstract Well logging techniques are disclosed which use and/or measure formation textural parameters. A disclosed formation textural model is bimodal in nature, and includes fractions of spherical grains and of platey grains having a single aspect ratio. This model is used in obtaining improved well logging recordings.
Inventors
- 👤 William E. Kenyon
- 👤 Paul L. Baker
- 👤 Pabitra N. Sen
- 👤 Jayanth R. Banavar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
G; G01; G01V; G01V11/00; G01V3/00; G01V3/38
Claims Analysis
Total Claims: 102
Claim 1
Independent Claim
84 words
A method for determining a property of formations surrounding a borehole, comprising the steps of: deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; formulating a textural model of the formation as a function of the electrical parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and determining a property of the formation from the textural model.
Claim 2
Independent Claim
84 words
A method for determining a property of formations surrounding a borehole, comprising the steps of: deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; formulating a textural model of the formation as a function of the electrical parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and determining a property of the formation from the textural model.
Claim 3
Dependent Claim
16 words
The method as defined by claim 1, wherein said platey grains have the same aspect ratio.
Claim 4
Dependent Claim
22 words
The method as defined by claim 1, wherein the measured electrical parameter of the formation is the dielectric permittivity of the formation.
Claim 5
Dependent Claim
22 words
The method as defined by claim 2, wherein the measured electrical parameter of the formation is the dielectric permittivity of the formation.
Claim 6
Independent Claim
105 words
A method for determining properties of formations surrounding a borehole, comprising the steps of: deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; formulating a textural model of the formation as a function of the electrical parameter; determining a property of the formation from the textural model; determining another property of the formation from the textural model; comparing the determined another property against a predetermined value for said another property; modifying the textural model based on said comparison; and determining a modified value of said first-mentioned property of the formation from the modified textural model.
Claim 7
Independent Claim
105 words
A method for determining properties of formations surrounding a borehole, comprising the steps of: deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; formulating a textural model of the formation as a function of the electrical parameter; determining a property of the formation from the textural model; determining another property of the formation from the textural model; comparing the determined another property against a predetermined value for said another property; modifying the textural model based on said comparison; and determining a modified value of said first-mentioned property of the formation from the modified textural model.
Claim 8
Dependent Claim
60 words
The method as defined by claim 1, further comprising the steps of: determining another property of the formation from the textural model; comparing the determined another property against a predetermined value for said another property; modifying the textural model based on said comparison; and determining a modified value of said first-mentioned property of the formation from the modified textural model.
Claim 9
Dependent Claim
60 words
The method as defined by claim 4, further comprising the steps of: determining another property of the formation from the textural model; comparing the determined another property against a predetermined value for said another property; modifying the textural model based on said comparison; and determining a modified value of said first-mentioned property of the formation from the modified textural model.
Claim 10
Dependent Claim
44 words
The method as defined by claim 1, wherein said step of formulating a textural model comprises formulating high frequency and low frequency versions of said textural model, and wherein said property is determined from said high and low frequency versions of said textural model.
Claim 11
Dependent Claim
44 words
The method as defined by claim 2, wherein said step of formulating a textural model comprises formulating high frequency and low frequency versions of said textural model, and wherein said property is determined from said high and low frequency versions of said textural model.
Claim 12
Independent Claim
86 words
A method for determining the water-filled porosity of formations surrounding a borehole, comprising the steps of: deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; formulating a textural model of the formation as a function of the measured parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and determining the water-filled porosity of the formation from the textural model.
Claim 13
Independent Claim
86 words
A method for determining the water-filled porosity of formations surrounding a borehole, comprising the steps of: deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; formulating a textural model of the formation as a function of the measured parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and determining the water-filled porosity of the formation from the textural model.
Claim 14
Dependent Claim
16 words
The method as defined by claim 10, wherein said platey grains have the same aspect ratio.
Claim 15
Dependent Claim
24 words
The method as defined by claim 10, wherein said electrical parameter is derived from phase and attenuation measurements of electromagnetic energy in the formation.
Claim 16
Dependent Claim
14 words
The method as defined by claim 10, wherein said electrical parameter is dielectric permittivity.
Claim 17
Dependent Claim
14 words
The method as defined by claim 11, wherein said electrical parameter is dielectric permittivity.
Claim 18
Dependent Claim
34 words
The method as defined by claim 10, wherein said deriving step including deriving dielectric permittivity and conductivity of the formation; and wherein said textural model is formulated as a function of the derived parameters.
Claim 19
Dependent Claim
34 words
The method as defined by claim 11, wherein said deriving step includes deriving dielectric permittivity and conductivity of the formation; and wherein said textural model is formulated as a function of the derived parameters.
Claim 20
Dependent Claim
21 words
The method as defined by claim 13, further comprising the step of determining conductivity of the formation from the textural model.
Claim 21
Dependent Claim
21 words
The method as defined by claim 14, further comprising the step of determining conductivity of the formation from the textural model.
Claim 22
Dependent Claim
37 words
The method as defined by claim 17, further comprising comparing the determined conductivity against a predetermined conductivity, modifying the textural model in accordance with the comparison, and determining a modified water-filled porosity from the modified textural model.
Claim 23
Dependent Claim
37 words
The method as defined by claim 18, further comprising comparing the determined conductivity against a predetermined conductivity, modifying the textural model in accordance with the comparison, and determining a modified water-filled porosity from the modified textural model.
Claim 24
Dependent Claim
25 words
The method as defined by claim 20, wherein said step of modifying the textural model comprises modifying the fraction of platey grains in said model.
Claim 25
Dependent Claim
27 words
The method as defined by claim 20, wherein said step of modifying the textural model comprises modifying the aspect ratio of the platey grains in said model.
Claim 26
Dependent Claim
26 words
The method as defined by claim 10, wherein said step of formulating a textural model comprises formulating high and low frequency versions of said textural model.
Claim 27
Dependent Claim
26 words
The method as defined by claim 11, wherein said step of formulating a textural model comprises formulating high and low frequency versions of said textural model.
Claim 28
Dependent Claim
56 words
The method as defined by claim 23, further comprising the steps of determining a low frequency conductivity of the formation from the textural model, comparing the determined low frequency conductivity against a predetermined low frequency conductivity, modifying the textural model in accordance with the comparison, and determining a modified water-filled porosity from the modified textural model.
Claim 29
Dependent Claim
56 words
The method as defined by claim 24, further comprising the steps of determining a low frequency conductivity of the formation from the textural model, comparing the determined low frequency conductivity against a predetermined low frequency conductivity, modifying the textural model in accordance with the comparison, and determining a modified water-filled porosity from the modified textural model.
Claim 30
Independent Claim
85 words
A method for determining textural properties of formations surrounding a borehole, comprising the steps of: deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and determining the textural properties of the formation from the textural model.
Claim 31
Independent Claim
85 words
A method for determining textural properties of formations surrounding a borehole, comprising the steps of: deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and determining the textural properties of the formation from the textural model.
Claim 32
Dependent Claim
16 words
The method as defined by claim 27, wherein said platey grains have the same aspect ratio.
Claim 33
Dependent Claim
28 words
The method as defined by claim 28, wherein the determined textural properties are the fractions of spherical and platey grains and the aspect ratio of the platey grains.
Claim 34
Dependent Claim
52 words
The method as defined by claim 27, wherein said step of deriving a measured electrical parameter includes deriving a dielectric permittivity parameter, a high frequency conductivity parameter, and a low frequency conductivity parameter, and wherein said step of formulating a textural model comprises formulating high and low frequency versions of said model.
Claim 35
Dependent Claim
52 words
The method as defined by claim 28, wherein said step of deriving a measured electrical parameter includes deriving a dielectric permittivity parameter, a high frequency conductivity parameter, and a low frequency conductivity parameter, and wherein said step of formulating a textural model comprises formulating high and low frequency versions of said model.
Claim 36
Dependent Claim
23 words
The method as defined by claim 30, further comprising the step of determining the water-filled porosity of the formation from the textural model.
Claim 37
Dependent Claim
23 words
The method as defined by claim 31, further comprising the step of determining the water-filled porosity of the formation from the textural model.
Claim 38
Dependent Claim
22 words
The method as defined by claim 27, further comprising the step of determining the cementation of the formation from the textural properties.
Claim 39
Dependent Claim
22 words
The method as defined by claim 31, further comprising the step of determining the cementation of the formation from the textural properties.
Claim 40
Dependent Claim
22 words
The method as defined by claim 33, further comprising the step of determining the cementation of the formation from the textural properties.
Claim 41
Dependent Claim
34 words
The method as defined by claim 29, further comprising the step of determining the cementation of the formation from the fractions of spherical and platey grains and the aspect ratio of the platey grains.
Claim 42
Independent Claim
132 words
A method for producing a depth-varying recording of the water-filled porosity of formations surrounding a borehole logged by a logging device, comprising the steps of: (a) deriving, from a logging measurement at a particular depth level, an electrical parameter of a formation at said particular depth level; (b) formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; (c) determining the water-filled porosity at said depth level from the textural model; (d) recording the determined water-filled porosity for the particular depth level; and (e) repeating steps (a) through (d) for other depth levels so as to obtain a depth-varying recording of water-filled porosity.
Claim 43
Independent Claim
132 words
A method for producing a depth-varying recording of the water-filled porosity of formations surrounding a borehole logged by a logging device, comprising the steps of: (a) deriving, from a logging measurement at a particular depth level, an electrical parameter of a formation at said particular depth level; (b) formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; (c) determining the water-filled porosity at said depth level from the textural model; (d) recording the determined water-filled porosity for the particular depth level; and (e) repeating steps (a) through (d) for other depth levels so as to obtain a depth-varying recording of water-filled porosity.
Claim 44
Dependent Claim
16 words
The method as defined by claim 38, wherein said platey grains have the same aspect ratio.
Claim 45
Dependent Claim
24 words
The method as defined by claim 38, wherein said electrical parameter is derived from phase and attenuation measurements of electromagnetic energy in the formation.
Claim 46
Dependent Claim
24 words
The method as defined by claim 39, wherein said electrical parameter is derived from phase and attenuation measurements of electromagnetic energy in the formation.
Claim 47
Dependent Claim
14 words
The method as defined by claim 40, wherein said electrical parameter is dielectric permittivity.
Claim 48
Dependent Claim
14 words
The method as defined by claim 41, wherein said electrical parameter is dielectric permittivity.
Claim 49
Dependent Claim
34 words
The method as defined by claim 40, wherein said deriving step includes deriving dielectric permittivity and conductivity of the formation; and wherein said textural model is formulated as a function of the derived parameters.
Claim 50
Dependent Claim
34 words
The method as defined by claim 41, wherein said deriving step includes deriving dielectric permittivity and conductivity of the formation; and wherein said textural model is formulated as a function of the derived parameters.
Claim 51
Dependent Claim
26 words
The method as defined by claim 42, further comprising the step of determining, at each depth level, the conductivity of the formation from the textural model.
Claim 52
Dependent Claim
26 words
The method as defined by claim 43, further comprising the step of determining, at each depth level, the conductivity of the formation from the textural model.
Claim 53
Dependent Claim
37 words
The method as defined by claim 46, further comprising comparing the determined conductivity against a predetermined conductivity, modifying the textural model in accordance with the comparison, and determining a modified water-filled porosity from the modified textural model.
Claim 54
Dependent Claim
37 words
The method as defined by claim 47, further comprising comparing the determined conductivity against a predetermined conductivity, modifying the textural model in accordance with the comparison, and determining a modified water-filled porosity from the modified textural model.
Claim 55
Dependent Claim
26 words
The method as defined by claim 38, wherein said step of formulating a textural model comprises formulating high and low frequency versions of said textural model.
Claim 56
Dependent Claim
26 words
The method as defined by claim 39, wherein said step of formulating a textural model comprises formulating high and low frequency versions of said textural model.
Claim 57
Dependent Claim
56 words
The method as defined by claim 50, further comprising the steps of determining a low frequency conductivity of the formation from the textural model, comparing the determined low frequency conductivity against a predetermined low frequency conductivity, modifying the textural model in accordance with the comparison, and determining a modified water-filled porosity from the modified textural model.
Claim 58
Dependent Claim
56 words
The method as defined by claim 51, further comprising the steps of determining a low frequency conductivity of the formation from the textural model, comparing the determined low frequency conductivity against a predetermined low frequency conductivity, modifying the textural model in accordance with the comparison, and determining a modified water-filled porosity from the modified textural model.
Claim 59
Independent Claim
131 words
A method for producing a depth-varying recording of textural properties of formations surrounding a borehole logged by a logging device, comprising the steps of: (a) deriving, from a logging measurement at a particular depth level, an electrical parameter of the formation at said particular depth level; (b) formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; (c) determining the textural properties at said depth level from the textural model; (d) recording the determined textural properties for the particular depth level; and (e) repeating steps (a) through (d) for other depth levels so as to obtain a depth-varying recording of textural properties.
Claim 60
Independent Claim
131 words
A method for producing a depth-varying recording of textural properties of formations surrounding a borehole logged by a logging device, comprising the steps of: (a) deriving, from a logging measurement at a particular depth level, an electrical parameter of the formation at said particular depth level; (b) formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; (c) determining the textural properties at said depth level from the textural model; (d) recording the determined textural properties for the particular depth level; and (e) repeating steps (a) through (d) for other depth levels so as to obtain a depth-varying recording of textural properties.
Claim 61
Dependent Claim
16 words
The method as defined by claim 54, wherein said platey grains have the same aspect ratio.
Claim 62
Dependent Claim
28 words
The method as defined by claim 55, wherein the determined textural properties are the fractions of spherical and platey grains and the aspect ratio of the platey grains.
Claim 63
Dependent Claim
24 words
The method as defined by claim 54, wherein said electrical parameter is derived from phase and attenuation measurements of electromagnetic energy in the formation.
Claim 64
Dependent Claim
24 words
The method as defined by claim 56, wherein said electrical parameter is derived from phase and attenuation measurements of electromagnetic energy in the formation.
Claim 65
Dependent Claim
34 words
The method as defined by claim 57, wherein said deriving step includes deriving dielectric permittivity and conductivity of the formation; and wherein said textural model is formulated as a function of the derived parameters.
Claim 66
Dependent Claim
34 words
The method as defined by claim 58, wherein said deriving step includes deriving dielectric permittivity and conductivity of the formation; and wherein said textural model is formulated as a function of the derived parameters.
Claim 67
Dependent Claim
51 words
The method as defined by claim 54, wherein said step of deriving a electrical parameter includes deriving a dielectric permittivity parameter, a high frequency conductivity parameter, and a low frequency conductivity parameter, and wherein said step of formulating a textural model comprises formulating high and low frequency versions of said model.
Claim 68
Independent Claim
136 words
A method for producing a depth-varying recording of cementation of formations surrounding a borehole logged by a logging device, comprising the steps of: (a) deriving, from a logging measurement at a particular depth level, an electrical parameter of the formation at said particular depth level; (b) formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; (c) determining the textural properties at said depth level from the textural model; (d) determining the cementation from the textural model; (e) recording the determined cementation for the particular depth level; and (f) repeating steps (a) through (e) for other depth levels so as to obtain a depth-varying recording of cementation.
Claim 69
Independent Claim
136 words
A method for producing a depth-varying recording of cementation of formations surrounding a borehole logged by a logging device, comprising the steps of: (a) deriving, from a logging measurement at a particular depth level, an electrical parameter of the formation at said particular depth level; (b) formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; (c) determining the textural properties at said depth level from the textural model; (d) determining the cementation from the textural model; (e) recording the determined cementation for the particular depth level; and (f) repeating steps (a) through (e) for other depth levels so as to obtain a depth-varying recording of cementation.
Claim 70
Dependent Claim
16 words
The method as defined by claim 62, wherein said platey grains have the same aspect ratio.
Claim 71
Dependent Claim
28 words
The method as defined by claim 63, wherein the determined textural properties are the fractions of spherical and platey grains and the aspect ratio of the platey grains.
Claim 72
Dependent Claim
24 words
The method as defined by claim 64, wherein said electrical parameter is derived from phase and attenuation measurements of electromagnetic energy in the formation.
Claim 73
Dependent Claim
34 words
The method as defined by claim 65, wherein said deriving step includes deriving dielectric permittivity and conductivity of the formation; and wherein said textural model is formulated as a function of the derived parameters.
Claim 74
Dependent Claim
51 words
The method as defined by claim 64, wherein said step of deriving an electrical parameter includes deriving a dielectric permittivity parameter, a high frequency conductivity parameter and a low frequency conductivity parameter, and wherein said step of formulating a textural model comprises formulating high and low frequency versions of said model.
Claim 75
Dependent Claim
86 words
Apparatus for determining a property of formations surrounding a borehole, comprising: means for deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; means for formulating a textural model of the formations as a function of the electrical parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and means for determining a property of the formation from the textural model.
Claim 76
Dependent Claim
86 words
Apparatus for determining a property of formations surrounding a borehole, comprising: means for deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; means for formulating a textural model of the formations as a function of the electrical parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and means for determining a property of the formation from the textural model.
Claim 77
Dependent Claim
21 words
Apparatus as defined by claim 68, wherein the measured electrical property of the formation is the dielectric permittivity of the formation.
Claim 78
Dependent Claim
88 words
Apparatus for determining the water-filled porosity of formations surrounding a borehole, comprising: means for deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; means for formulating a textural model of the formation as a function of the measured parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and means for determining the water-filled porosity of the formation from the textural model.
Claim 79
Dependent Claim
88 words
Apparatus for determining the water-filled porosity of formations surrounding a borehole, comprising: means for deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; means for formulating a textural model of the formation as a function of the measured parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and means for determining the water-filled porosity of the formation from the textural model.
Claim 80
Dependent Claim
15 words
Apparatus as defined by claim 70, wherein said platey grains have the same aspect ratio.
Claim 81
Dependent Claim
27 words
Apparatus as defined by claim 71, wherein said electrical parameter is dielectric permittivity and is derived from phase and attenuation measurements of electromagnetic energy in the formation.
Claim 82
Dependent Claim
87 words
Apparatus for determining textural properties of formations surrounding a borehole, comprising: means for deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; means for formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and means for determining the textural properties of the formation from the textural model.
Claim 83
Dependent Claim
87 words
Apparatus for determining textural properties of formations surrounding a borehole, comprising: means for deriving a measured electrical parameter of a formation surrounding the borehole from a logging device moveable through the borehole; means for formulating a textural model of the formation as a function of the derived parameter, the textural model being a bimodal model in which the formation matrix includes a fraction of spherical grains and a complementary fraction of platey grains; and means for determining the textural properties of the formation from the textural model.
Claim 84
Dependent Claim
15 words
Apparatus as defined by claim 73, wherein said platety grains have the same aspect ratio.
Claim 85
Dependent Claim
27 words
Apparatus as defined by claim 74, wherein the determined textural properties are the fractions of spherical and platey grains and the aspect ratio of the platey grains.
Claim 86
Dependent Claim
21 words
Apparatus as defined by claim 75, further comprising means for determining the water-filled porosity of the formation from the textural model.
Claim 87
Dependent Claim
20 words
Apparatus as defined by claim 75, further comprising means for determining the cementation of the formation from the textural properties.
Claim 88
Dependent Claim
48 words
The method as defined by claim 1, wherein said textural model of the formation includes chunks of material with a porosity between the chunks, the material of said chunks also having a porosity and including a matrix which has spherical grains and a complementary fraction of platey grains.
Claim 89
Dependent Claim
48 words
The method as defined by claim 10, wherein said textural model of the formation includes chunks of material with a porosity between the chunks, the material of said chunks also having a porosity and including a matrix which has spherical grains and a complementary fraction of platey grains.
Claim 90
Dependent Claim
48 words
The method as defined by claim 27, wherein said textural model of the formation includes chunks of material with a porosity between the chunks, the material of said chunks also having a porosity and including a matrix which has spherical grains and a complementary fraction of platey grains.
Claim 91
Dependent Claim
48 words
The method as defined by claim 38, wherein said textural model of the formation includes chunks of material with a porosity between the chunks, the material of said chunks also having a porosity and including a matrix which has spherical grains and a complementary fraction of platey grains.
Claim 92
Dependent Claim
48 words
The method as defined by claim 68, wherein said textural model of the formation includes chunks of material with a porosity between the chunks, the material of said chunks also having a porosity and including a matrix which has spherical grains and a complementary fraction of platey grains.
Claim 93
Dependent Claim
58 words
The method as defined by claim 1, wherein said textural model of the formation includes coated spheres of material with a porosity between the coated spheres, said coated spheres having a core of solid matrix material coated with coating material that has a porosity and includes a matrix having spherical grains and a complementary fraction of platey grains.
Claim 94
Dependent Claim
58 words
The method as defined by claim 10, wherein said textural model of the formation includes coated spheres of material with a porosity between the coated spheres, said coated spheres having a core of solid matrix material coated with coating material that has a porosity and includes a matrix having spherical grains and a complementary fraction of platey grains.
Claim 95
Dependent Claim
58 words
The method as defined by claim 27, wherein said textural model of the formation includes coated spheres of material with a porosity between the coated spheres, said coated spheres having a core of solid matrix material coated with coating material that has a porosity and includes a matrix having spherical grains and a complementary fraction of platey grains.
Claim 96
Dependent Claim
58 words
The method as defined by claim 38, wherein said textural model of the formation includes coated spheres of material with a porosity between the coated spheres, said coated spheres having a core of solid matrix material coated with coating material that has a porosity and includes a matrix having spherical grains and a complementary fraction of platey grains.
Claim 97
Dependent Claim
58 words
The method as defined by claim 68, wherein said textural model of the formation includes coated spheres of material with a porosity between the coated spheres, said coated spheres having a core of solid matrix material coated with coating material that has a porosity and includes a matrix having spherical grains and a complementary fraction of platey grains.
Claim 98
Dependent Claim
18 words
The method as defined by claim 1, wherein said model has a fluid which includes water and hydrocarbon.
Claim 99
Dependent Claim
18 words
The method as defined by claim 10, wherein said model has a fluid which includes water and hydrocarbon.
Claim 100
Dependent Claim
18 words
The method as defined by claim 27, wherein said model has a fluid which includes water and hydrocarbon.
Claim 101
Dependent Claim
18 words
The method as defined by claim 38, wherein said model has a fluid which includes water and hydrocarbon.
Claim 102
Dependent Claim
18 words
The method as defined by claim 68, wherein said model has a fluid which includes water and hydrocarbon.
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