Flow profiling 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 computer implemented method of obtaining a model flow profile of a well in a subsurface formation based on data obtained from the well bore by a logging while drilling tool, a permeability logging tool, and a viscosity logging tool at a location in a well bore, the computer performing the steps of:
 determining a measure of the thickness of the subsurface formation from the stored data obtained from the logging while drilling tool;   determining a measure of the permeability of the subsurface formation from the stored data obtained from the permeability logging tool;   determining a measure of the viscosity of fluid in the subsurface formation from the stored data obtained from the viscosity tool; and   determining the model flow profile of the well based on the determined measures of the thickness, permeability and viscosity.   
     
     
         2 . The computer implemented method of  claim 1 , wherein the step of determining a measure of the permeability of the subsurface formation comprises determining a measure of the relative permeability from the stored data obtained from the permeability logging tool. 
     
     
         3 . The computer implemented method of  claim 1 , further including the step of forming an output display of the determined model flow profile of the well. 
     
     
         4 . The computer implemented method of  claim 1 , wherein the data obtained from the well bore by a logging while drilling tool, a permeability logging tool, and a viscosity logging tool are obtained at a plurality of locations in the well bore and 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 permeability of the subsurface formation at the plurality of locations from the obtained data from the permeability logging tool;   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 model flow profile of the well at the plurality of locations in the formation based on the determined measures of the thickness, permeability and viscosity.   
     
     
         5 . The method of  claim 4 , wherein the computer processing further includes the step of:
 forming an output display of the determined model flow profile of the well at the plurality of locations.   
     
     
         6 . A data processing system for obtaining a model flow profile of a well in a subsurface formation, the data processing system comprising:
 a data storage memory storing data obtained from the well bore by a logging while drilling tool, a permeability logging tool, and a viscosity logging tool at a location in a well bore;   a processor performing the steps of:   determining a measure of the thickness of the subsurface formation from the stored data obtained from the logging while drilling tool;   determining a measure of the permeability of the subsurface formation from the stored data obtained from the permeability logging tool;   determining a measure of the viscosity of fluid in the subsurface formation from the stored data obtained from the viscosity tool; and   determining the model flow profile of the well based on the determined measures of the thickness, permeability and viscosity.   
     
     
         7 . The data processing system of  claim 6 , further including an output display forming a display of the determined model flow profile of the well at the location in the well bore. 
     
     
         8 . The data processing system of  claim 6 , wherein the processor in performing the step of determining a measure of the permeability of the subsurface formation determines a measure of the relative permeability from the stored data obtained from the permeability logging tool. 
     
     
         9 . The data processing system of  claim 6 , wherein the data storage memory stores data obtained from the well bore by a logging while drilling tool, a permeability logging tool, and a viscosity logging tool at a plurality of locations in the well bore. 
     
     
         10 . The data processing system of  claim 9 , further including an output display forming a display of the determined model flow profile of the well at the plurality of locations in the well bore. 
     
     
         11 . A data storage device having stored in a non-transitory computer readable medium computer operable instructions for causing a data processing system to obtaining a model flow profile of a well in a subsurface formation, 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 a location in the well bore by a logging while drilling tool, a permeability logging tool, and a viscosity logging tool;   processing the stored data obtained from the logging tools to obtain the model flow profile of the well in the subsurface formation at the location in the well bore by performing the steps of:   determining a measure of the thickness of the subsurface formation from the stored data obtained from the logging while drilling tool;   determining a measure of the permeability of the subsurface formation from the stored data obtained from the permeability logging tool;   determining a measure of the viscosity of fluid in the subsurface formation from the stored data obtained from the viscosity tool; and   determining the model flow profile of the well based on the determined measures of the thickness, permeability and viscosity.   
     
     
         12 . The data storage device of  claim 10 , wherein the stored instructions containing instructions causing the data processing system to determine a measure of permeability cause the data processing system to determine a measure of the relative permeability from the stored data obtained from the permeability logging tool. 
     
     
         13 . The data storage device of  claim 10 , further including the stored instructions containing instructions causing the data processing system to perform the step of forming an output display of the determined model flow profile of the well at the location in the well bore. 
     
     
         14 . The data storage device of  claim 10 , wherein the stored instructions containing instructions causing the data processing system to store data obtained from the well bore by a logging while drilling tool, a permeability logging tool, and a viscosity logging tool at a plurality of locations in the well bore. 
     
     
         15 . The data storage device of  claim 14 , further including the stored instructions containing instructions causing the data processing system to perform the step of forming an output display of the determined model flow profile of the well at a plurality of locations in the well bore.