Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
In an oil recovery operation wherein at least one fluid is injected into at least one well drilled into an oil-bearing formation permeable to a liquid to be injected into such well, the steps comprising a. measuring, with a nuclear magnetic resonance detecting device, any interaction between fluid sample(s), having nuclei detectable by an NMR detection device, injected into rock representative of a petroleum-bearing reservoir; with the rock and with fluid reasonably representative of the fluid(s) in said formation within said rock having nuclei detectable by an NMR detection device, and b. injecting into said formation fluid containing one or more of surfactant, cosurfactant and/or other semi-polar organic compound, said fluid being based on sample(s) shown to be minimally affected by the representative rock and fluids therein as determined by nuclear magnetic resonance.
Claim 2
Dependent Claim
133 words
In an oil recovery operation wherein at least one fluid is injected into at least one well drilled into an oil-bearing formation permeable to a liquid to be injected into such well, the steps comprising a. measuring, with a nuclear magnetic resonance detecting device, any interaction between fluid sample(s), having nuclei detectable by an NMR detection device, injected into rock representative of a petroleum-bearing reservoir; with the rock and with fluid reasonably representative of the fluid(s) in said formation within said rock having nuclei detectable by an NMR detection device, and b. injecting into said formation fluid containing one or more of surfactant, cosurfactant and/or other semi-polar organic compound, said fluid being based on sample(s) shown to be minimally affected by the representative rock and fluids therein as determined by nuclear magnetic resonance.
Claim 3
Dependent Claim
32 words
The process of claim 1 wherein the fluid is injected during the course of changing the injectivity of all or a part of the formation adjacent an oil injection or production well.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein the fluid is injected during the course of the stimulation of an injection or production well.
Claim 5
Dependent Claim
45 words
The process of claim 1 wherein the analysis is conducted on a core taken from a well spaced at a distance from an original injection well and wherein fluid later injected is selected on the basis of nuclear magnetic resonance measurements taken in said core.
Claim 6
Dependent Claim
122 words
The process of designing fluids for injection comprising contacting a porous matrix substantially representative of a fluid-bearing subterranean formation containing fluids having nuclei detectable by nuclear magnetic resonance measuring devices, determining the NMR response of each nuclei-bearing fluid in association with said matrix, determining the NMR response of each fluid or component thereof to be brought into contact with the matrix, determining the NMR response of each such fluid or component thereof brought into contact with the matrix while in contact with fluids in association with said matrix, and contacting the formation with fluid which substantially meets predetermined criteria for interaction of the fluid(s) for injection with the matrix and/or fluid associated with the matrix, as established by said NMR response-determining steps.
Claim 7
Dependent Claim
122 words
The process of designing fluids for injection comprising contacting a porous matrix substantially representative of a fluid-bearing subterranean formation containing fluids having nuclei detectable by nuclear magnetic resonance measuring devices, determining the NMR response of each nuclei-bearing fluid in association with said matrix, determining the NMR response of each fluid or component thereof to be brought into contact with the matrix, determining the NMR response of each such fluid or component thereof brought into contact with the matrix while in contact with fluids in association with said matrix, and contacting the formation with fluid which substantially meets predetermined criteria for interaction of the fluid(s) for injection with the matrix and/or fluid associated with the matrix, as established by said NMR response-determining steps.
Claim 8
Dependent Claim
31 words
The process of claim 5 wherein the predetermined criterion is that the fluid contacting the matrix does not substantially interact with fluid in association with the matrix and/or with the matrix.
Claim 9
Dependent Claim
23 words
The process of claim 5 wherein the predetermined criterion is that the fluid to be injected does not substantially interact with the matrix.
Claim 10
Dependent Claim
28 words
The process of claim 5 wherein the predetermined criterion is that the fluid contacting the matrix substantially interacts with fluid in association with the matrix and/or the matrix.