Measuring oil and water transmissivity of wells from multiple logs

Abstract

Models of fluid flow in wells in formation of a subsurface earth reservoir are formed by computers based on measurements obtained by well logging tools run in the wells and measurements of formation rock characteristics obtained from laboratory data. The models so formed are used to form measures of injection/production profiles and assist reservoir engineers in allocation of production and injection wells for the reservoir, and in other reservoir production planning and analysis.

What is claimed is: 
     
         1 . A method of obtaining a measure of oil and water transmissibility of fluids in a subsurface formation at a location in a well bore, the method comprising the steps of:
 obtaining data with a logging while drilling tool from the formation at the location in the well bore;   obtaining data with a permeability logging tool from the formation at the location in the well bore;   obtaining data with a viscosity logging tool from the formation at the location in the well bore;   obtaining relative permeability test data regarding the formation;   processing the obtained data from the logging tools in a computer to obtain a measure of fluid transmissibility in the subsurface formation at the location in the well bore by performing the computer processing steps of:   determining a measure of the thickness of the subsurface formation from the obtained data from the logging while drilling tool;   determining a measure of the relative permeability to oil of the subsurface formation from the obtained data from the permeability logging tool and the relative permeability test data;   determining a measure of the relative permeability to water of the subsurface formation from the obtained data from the permeability logging tool and the relative permeability test data;   determining a measure of the viscosity of fluids in the subsurface formation from the obtained data from the viscosity tool;   determining the transmissibility of oil in the subsurface formation at the location in the formation based on the determined measures of the thickness, relative permeability and viscosity; and   determining the transmissibility of water in the subsurface formation at the location in the formation based on the determined measures of the thickness, relative permeability and viscosity.   
     
     
         2 . The computer implemented method of  claim 1 , further including the step of forming an output display of the determined transmissibility of oil and the determined transmissibility of water in the subsurface formation at the location in the formation. 
     
     
         3 . The computer implemented method of  claim 2 , wherein the step of forming an output display comprises producing a flow profile model of the well based on the determined transmissibility's of oil and water. 
     
     
         4 . The method of  claim 1 , wherein the permeability logging tool obtaining data comprises an electrofacies logging tool. 
     
     
         5 . The method of  claim 1 , wherein the viscosity logging tool obtaining data comprises an NMR logging tool. 
     
     
         6 . The method of  claim 1 , further including the steps of:
 obtaining data with the logging while drilling tool from the formation at a plurality of locations in the well bore;   obtaining data with the permeability logging tool from the formation at the plurality of locations in the well bore;   obtaining data with the viscosity logging tool from the formation at the plurality of locations in the well bore.   
     
     
         7 . The method of  claim 6 , wherein the computer processing further comprises the steps of determining measures of the thickness of the subsurface formation at the plurality of locations from the obtained data from the logging while drilling tool;
 determining measures of the relative permeability of the subsurface formation at the plurality of locations from the obtained data from the permeability logging tool and relative permeability test data;   determining measures of the viscosity of fluid in the subsurface formation at the plurality of locations from the obtained data from the viscosity tool; and   determining the transmissibility of oil in the subsurface formation at the plurality of locations in the formation based on the determined measures of the thickness, relative permeability and viscosity; and   determining the transmissibility of water in the subsurface formation at the plurality of locations in the formation based on the determined measures of the thickness, relative permeability and viscosity.   
     
     
         8 . The method of  claim 7 , wherein the computer processing further includes the step of:
 forming a cumulative measure of fluid transmissibility of oil and the fluid transmissibility of water of the subsurface formation based on the determined measures of transmissibility of oil and water at the plurality of locations in the formation,   
     
     
         9 . The method of  claim 7 , wherein the computer processing further includes the step of:
 forming an output display of the cumulative measure of fluid transmissibility of oil and the fluid transmissibility of water in the subsurface formation.   
     
     
         10 . A data processing system for forming a measure of transmissibility of fluid in a subsurface formation at a location in a well bore, the data processing system comprising:
 a data storage memory storing data obtained from the formation at the location in the well bore by a logging while drilling tool, a permeability logging tool, a viscosity logging tool, and relative permeability test data regarding the formation;   a processor for performing the steps of:   determining a measure of the thickness of the subsurface formation from the obtained data from the logging while drilling tool;   determining a measure of the relative permeability to oil of the subsurface formation from the obtained data from the permeability logging tool and the relative permeability test data;   determining a measure of the relative permeability to water of the subsurface formation from the obtained data from the permeability logging tool and the relative permeability test data;   determining a measure of the viscosity of fluids in the subsurface formation from the obtained data from the viscosity tool;   determining the transmissibility of oil in the subsurface formation at the location in the formation based on the determined measures of the thickness, relative permeability and viscosity; and   determining the transmissibility of water in the subsurface formation at the location in the formation based on the determined measures of the thickness, relative permeability and viscosity.   
     
     
         11 . The data processing system of  claim 10 , further including:
 an output display forming a display of the determined transmissibility of oil and the determined transmissibility of water in the subsurface formation at the location in the formation.   
     
     
         12 . The data processing system of  claim 11 , wherein the output display formed comprises a flow profile model of the well based on the determined transmissibilities of oil and water. 
     
     
         13 . The data processing system of  claim 10 , wherein the data storage memory further stores data obtained with the logging while drilling tool from the formation at a plurality of locations in the well bore, data with the permeability logging tool from the formation at the plurality of locations in the well bore; and data obtained with the viscosity logging tool from the formation at the plurality of locations in the well bore. 
     
     
         14 . The data processing system of  claim 13 , wherein the processor further performs the steps of:
 determining measures of the thickness of the subsurface formation at the plurality of locations from the obtained data from the logging while drilling tool;   determining measures of the relative permeability of the subsurface formation at the plurality of locations from the obtained data from the permeability logging tool and relative permeability test data;   determining measures of the viscosity of fluid in the subsurface formation at the plurality of locations from the obtained data from the viscosity tool; and   determining the transmissibility of oil in the subsurface formation at the plurality of locations in the formation based on the determined measures of the thickness, relative permeability and viscosity; and   determining the transmissibility of water in the subsurface formation at the plurality of locations in the formation based on the determined measures of the thickness, relative permeability and viscosity.   
     
     
         15 . The data processing system of  claim 14 , wherein the processor further performs the step of:
 forming a cumulative measure of fluid transmissibility of oil and the fluid transmissibility of water of the subsurface formation based on the determined measures of transmissibility of oil and water at the plurality of locations in the formation.   
     
     
         16 . The data processing system of  claim 15 , wherein the data processing system further includes:
 an output display forming a display of the cumulative measure of fluid transmissibility of oil and the fluid transmissibility of water in the subsurface formation.   
     
     
         17 . A data storage device having stored in a non-transitory computer readable medium computer operable instructions for causing a data processing system to determine oil and water transmissibility of fluids in a subsurface formation at a location in a well bore, the instructions stored in the data storage device causing the data processing system to perform the following steps:
 storing in a data storage memory data obtained from the formation at the location in the well bore by a logging while drilling tool, a permeability logging tool, a viscosity logging tool, and relative permeability test data regarding the formation;   processing the data stored in the data storage memory to obtain a measure of oil and water transmissibility in the subsurface formation at the location in the well bore by performing the computer processing steps of:   determining a measure of the thickness of the subsurface formation from the obtained data from the logging while drilling tool;   determining a measure of the relative permeability to oil of the subsurface formation from the obtained data from the permeability logging tool and the relative permeability test data;   determining a measure of the relative permeability to water of the subsurface formation from the obtained data from the permeability logging tool and the relative permeability test data;   determining a measure of the viscosity of fluids in the subsurface formation from the obtained data from the viscosity tool;   determining the transmissibility of oil in the subsurface formation at the location in the formation based on the determined measures of the thickness, relative permeability and viscosity; and   determining the transmissibility of water in the subsurface formation at the location in the formation based on the determined measures of the thickness, relative permeability and viscosity.   
     
     
         18 . The data storage device of  claim 17 , further including the stored instructions containing instructions causing the data processing system to perform the step of forming an output display of the determined transmissibility of oil and the determined transmissibility of water in the subsurface formation at the location in the formation. 
     
     
         19 . The data storage device of  claim 17 , further including the stored instructions containing instructions causing the data processing system to perform the steps of storing data obtained from the formation at a plurality of locations by the logging while drilling tool, the permeability logging tool, and the viscosity logging tool. 
     
     
         20 . The data storage device of  claim 19 , further including the stored instructions containing instructions causing the data processing system to perform the steps of:
 determining measures of the thickness of the subsurface formation at the plurality of locations from the obtained data from the logging while drilling tool;   determining measures of the relative permeability of the subsurface formation at the plurality of locations from the obtained data from the permeability logging tool and relative permeability test data;   determining measures of the viscosity of fluid in the subsurface formation at the plurality of locations from the obtained data from the viscosity tool; and   determining the transmissibility of oil in the subsurface formation at the plurality of locations in the formation based on the determined measures of the thickness, relative permeability and viscosity; and   determining the transmissibility of water in the subsurface formation at the plurality of locations in the formation based on the determined measures of the thickness, relative permeability and viscosity.   
     
     
         21 . The data storage device of  claim 20 , further including the stored instructions containing instructions causing the data processing system to perform the step of:
 forming a cumulative measure of fluid transmissibility of oil and the fluid transmissibility of water of the subsurface formation based on the determined measures of transmissibility of oil and water at the plurality of locations in the formation.   
     
     
         22 . The data storage device of  claim 21 , further including the stored instructions containing instructions causing the data processing system to perform the step of:
 an output display forming a display of the cumulative measure of fluid transmissibility of oil and the fluid transmissibility of water in the subsurface formation.