US2012179379A1PendingUtilityA1

Flow Profile Modeling for Wells

32
Individually held — no corporate assignee on recordPriority: Jan 10, 2011Filed: Jan 10, 2011Published: Jul 12, 2012
Est. expiryJan 10, 2031(~4.5 yrs left)· nominal 20-yr term from priority
Inventors:Mohammed H. AlshawafLewis M. WarlickFahad A. Al-Ajmi
E21B 43/00G01V 11/00E21B 47/10E21B 47/12E21B 47/00
32
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Claims

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.

Claims

exact text as granted — not AI-modified
1 . A computer implemented method of obtaining a measure of transmissibility of fluid in a subsurface formation at a location in a well bore, comprising the steps of
 obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool;   obtaining a measure of the permeability of the formation based on logging measurements obtained from a well logging tool;   obtaining a measure of the viscosity of the formation fluid based on logging measurements obtained from a well logging tool;   determining the transmissibility of fluid in the subsurface formation at the location in the formation based on the obtained measures of the thickness, permeability and viscosity.   
     
     
         2 . The method of  claim 1 , wherein the well bore comprises a horizontal well bore. 
     
     
         3 . The method of  claim 1 , wherein the step of obtaining a measure of the thickness of the formation is performed with a logging while drilling tool. 
     
     
         4 . The method of  claim 1 , wherein the step of obtaining a measure of the permeability of the formation is performed with an electrofacies logging tool. 
     
     
         5 . The method of  claim 1 , wherein the step of obtaining a measure of the viscosity of the formation fluid is performed with an NMR logging tool. 
     
     
         6 . The method of  claim 1 , further including the step of forming an output display of the determined transmissibility of fluid in the subsurface formation at the location in the formation. 
     
     
         7 . The method of  claim 1 , wherein:
 the step of obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool is performed at a selected location in the formation;   the step of obtaining a measure of the permeability of the formation based on logging measurements obtained from a well logging tool is performed at the selected location in the formation;   the step of obtaining a measure of the viscosity of the formation fluid based on logging measurements obtained from a well logging tool is performed at the selected location in the formation; and   the step of determining the transmissibility of fluid in the subsurface formation at the location in the formation is performed at the selected location in the formation based on the obtained measures of the thickness, permeability and viscosity at the selected location in the formation.   
     
     
         8 . The method of  claim 7 , further including the steps of
 obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool at another selected location in the formation;   obtaining a measure of the permeability of the formation based on measurements obtained from a well logging tool at the another selected location in the formation;   obtaining a measure of the viscosity of the formation fluid based on measurements obtained from a well logging tool at the another selected location in the formation; and   determining transmissibility of fluid in the subsurface formation at the another selected location at the another location in the formation based on the obtained measures of the thickness, permeability and viscosity at the another selected location.   
     
     
         9 . The method of  claim 8 , further including the step of:
 forming a cumulative measure of transmissibility of fluid in the subsurface formation based on the determined measure of transmissibility at the selected locations in the formation.   
     
     
         10 . The method of  claim 9 , further including the step of:
 forming an output display of the cumulative measure of transmissibility of fluid in the subsurface formation.   
     
     
         11 . The method of  claim 1 , further including the step of:
 obtaining a measure of porosity of the formation.   
     
     
         12 . 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;   a processor for performing the steps of:
 obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool; 
 obtaining a measure of the permeability of the formation based on logging measurements obtained from a well logging tool; 
 obtaining a measure of the viscosity of the formation fluid based on logging measurements obtained from a well logging tool; 
 determining the transmissibility of fluid in the subsurface formation at the location in the formation based on the obtained measures of the thickness, permeability and viscosity. 
   
     
     
         13 . The data processing system of  claim 12 , wherein the well bore comprises a horizontal well bore. 
     
     
         14 . The data processing system of  claim 12 , further including an output display forming a display of the determined transmissibility of fluid in the subsurface formation at the location in the formation. 
     
     
         15 . The data processing system of  claim 12 , wherein the processor performs:
 the step of obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool at a selected location in the formation;   the step of obtaining a measure of the permeability of the formation based on logging measurements obtained from a well logging tool at the selected location in the formation;   the step of obtaining a measure of the viscosity of the formation fluid based on logging measurements obtained from a well logging tool at the selected location in the formation; and   the step of determining the transmissibility of fluid in the subsurface formation at the location in the formation at the selected location in the formation based on the obtained measures of the thickness, permeability and viscosity at the selected location in the formation.   
     
     
         16 . The data processing system of  claim 15 , further including the processor performing the steps of:
 obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool at another selected location in the formation;   obtaining a measure of the permeability of the formation based on measurements obtained from a well logging tool at the another selected location in the formation;   obtaining a measure of the viscosity of the formation fluid based on measurements obtained from a well logging tool at the another selected location in the formation; and   determining transmissibility of fluid in the subsurface formation at the another selected location at the another location in the formation based on the obtained measures of the thickness, permeability and viscosity at the another selected location.   
     
     
         17 . The data processing system of  claim 16 , further including the processor performing the step of:
 forming a cumulative measure of transmissibility of fluid in the subsurface formation based on the determined measure of transmissibility at the selected locations in the formation.   
     
     
         18 . The data processing system of  claim 17 , further including an output display forming a display of the cumulative measure of transmissibility of fluid in the subsurface formation. 
     
     
         19 . The data processing system of  claim 12 , further including the processor performing the step of
 obtaining a measure of porosity of the formation.   
     
     
         20 . A data storage device having stored in a computer readable medium computer operable instructions for causing a data processing system to form a measure of transmissibility of fluid 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:
 obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool;   obtaining a measure of the permeability of the formation based on logging measurements obtained from a well logging tool;   obtaining a measure of the viscosity of the formation fluid based on logging measurements obtained from a well logging tool;   determining the transmissibility of fluid in the subsurface formation at the location in the formation based on the obtained measures of the thickness, permeability and viscosity.   
     
     
         21 . The data storage device of  claim 20 , wherein the well bore comprises a horizontal well bore. 
     
     
         22 . The data storage device of  claim 20 , further including the stored instructions containing instructions causing the data processing system to perform step of forming an output display of the determined transmissibility of fluid in the subsurface formation at the location in the formation. 
     
     
         29 . The data storage device of  claim 20 , wherein the stored instructions containing instructions causing the data processing system to perform steps of
 obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool at a selected location in the formation;   obtaining a measure of the permeability of the formation based on logging measurements obtained from a well logging tool at the selected location in the formation;   obtaining a measure of the viscosity of the formation fluid based on logging measurements obtained from a well logging tool at the selected location in the formation; and   determining the transmissibility of fluid in the subsurface formation at the location in the formation at the selected location in the formation based on the obtained measures of the thickness, permeability and viscosity at the selected location in the formation.   
     
     
         24 . The data storage device of claim  23 , further including the stored instructions containing instructions causing the data processing system to perform the steps of
 obtaining a measure of the thickness of the formation based on measurements obtained from a well logging tool at another selected location in the formation;   obtaining a measure of the permeability of the formation based on measurements obtained from a well logging tool at the another selected location in the formation;   obtaining a measure of the viscosity of the formation fluid based on measurements obtained from a well logging tool at the another selected location in the formation; and   determining transmissibility of fluid in the subsurface formation at the another selected location at the another location in the formation based on the obtained measures of the thickness, permeability and viscosity at the another selected location.   
     
     
         25 . The data storage device of  claim 24 , further including the stored instructions containing instructions causing the data processing system to perform the step of:
 forming a cumulative measure of transmissibility of fluid in the subsurface formation based on the determined measure of transmissibility at the selected locations in the formation.   
     
     
         26 . The data storage device of  claim 25 , further including the stored instructions containing instructions causing the data processing system to perform the step of
 forming an output display of the cumulative measure of transmissibility of fluid in the subsurface formation.   
     
     
         27 . The data storage device of  claim 20 , further including the stored instructions containing instructions causing the data processing system to perform the step of:
 obtaining a measure of porosity of the formation.

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