Stratigraphic Correlation Method And Apparatus Based on Uncertainty

Abstract

The present invention provides a stratigraphic correlation method and apparatus based on uncertainty. The stratigraphic correlation method comprises: determining a plurality of possible correlation positions in a well with uncertain layered position in a profile, in a stratigraphic correlation process; assigning a qualitative or quantitative certainty value to the plurality of correlation positions; and storing and displaying the plurality of correlation positions and certainty values thereof as different layered solutions on the profile, respectively. By setting a plurality of position solutions for a layer in the present invention, all possibilities of the layered position judged by the geological personnel can be recorded as references for the subsequent correlation of other profiles, the closing of the whole layered solution, and the quality control.

1 . A stratigraphic correlation method based on uncertainty, comprising:
 determining a plurality of possible correlation positions in a well with uncertain layered position in a profile, in a stratigraphic correlation process;   assigning a qualitative or quantitative certainty value to the plurality of correlation positions; and   storing and displaying the plurality of correlation positions and certainty values thereof as different layered solutions on the profile, respectively.   
     
     
         2 . The stratigraphic correlation method based on uncertainty according to  claim 1 , further comprising: displaying the correlation position and the certainty value of the well in the current profile, respectively, when other profile passes through the well. 
     
     
         3 . The stratigraphic correlation method based on uncertainty according to  claim 2 , further comprising: modifying the certainty value of the layered solution according to a correlation result of the current profile. 
     
     
         4 . The stratigraphic correlation method based on uncertainty according to  claim 2  or  3 , further comprising: adding a new layered solution according to a correlation result of the current profile and determining a certainty value thereof. 
     
     
         5 . The stratigraphic correlation method based on uncertainty according to  claim 4 , wherein after stratigraphic correlations of all wells are completed, a certainty contour map is obtained by interpolation according to a certainty value of each layered solution at well points. 
     
     
         6 . The stratigraphic correlation method based on uncertainty according to  claim 4 , wherein after stratigraphic correlations of all wells are completed, a most possible certainty contour map for each layer is obtained by interpolation according to a layered solution corresponding to a maximum certainty value of the layer. 
     
     
         7 . The stratigraphic correlation method based on uncertainty according to  claim 4 , wherein after all wells are closed, an average certainty value of all wells in each layered solution or an average maximum certainty value of all wells in each layer is counted. 
     
     
         8 . A stratigraphic correlation apparatus based on uncertainty, comprising:
 a position determination unit configured to determine a plurality of possible correlation positions in a well with uncertain layered position in a profile, in a stratigraphic correlation process;   an assignment unit configured to assign a qualitative or quantitative certainty value to the plurality of correlation positions; and   a display unit configured to store and display the plurality of correlation positions and certainty values thereof as different layered solutions on the profile, respectively.   
     
     
         9 . The stratigraphic correlation apparatus based on uncertainty according to  claim 8 , wherein the display unit is further configured to display the correlation position and the certainty value of the well in the current profile, respectively, when other profile passes through the well. 
     
     
         10 . The stratigraphic correlation apparatus based on uncertainty according to  claim 9 , further comprising a modification unit configured to modify the certainty value of the layered solution according to a correlation result of the current profile. 
     
     
         11 . The stratigraphic correlation apparatus based on uncertainty according to  claim 9  or  10 , further comprising a solution addition unit configured to add a new layered solution according to a correlation result of the current profile and determine a certainty value thereof. 
     
     
         12 . The stratigraphic correlation apparatus based on uncertainty according to  claim 11 , further comprising a first interpolation unit configured to obtain a certainty contour map by interpolation according to a certainty value of each layered solution at well points, after stratigraphic correlations of all wells are completed. 
     
     
         13 . The stratigraphic correlation apparatus based on uncertainty according to  claim 11 , further comprising a second interpolation unit configured to obtain a most possible certainty contour map for each layer by interpolation according to a layered solution corresponding to a maximum certainty value of the layer, after stratigraphic correlations of all wells are completed. 
     
     
         14 . The stratigraphic correlation apparatus based on uncertainty according to  claim 11 , further comprising a counting unit configured to count an average certainty value of all wells in each layered solution or an average maximum certainty value of all wells in each layer, after all wells are closed. 
     
     
         15 . A computer readable storage medium containing computer readable instructions which when being executed, cause a processor to at least:
 determine a plurality of possible correlation positions in a well with uncertain layered position in a profile, in a stratigraphic correlation process;   assign a qualitative or quantitative certainty value to the plurality of correlation positions; and   store and display the plurality of correlation positions and certainty values thereof as different layered solutions on the profile, respectively.   
     
     
         16 . The computer readable storage medium according to  claim 15 , wherein the computer readable instructions further cause the processor to display the correlation position and the certainty value of the well in the current profile, respectively, when other profile passes through the well. 
     
     
         17 . The computer readable storage medium according to  claim 16 , wherein the computer readable instructions further cause the processor to modify the certainty value of the layered solution according to a correlation result of the current profile. 
     
     
         18 . The computer readable storage medium according to  claim 16  or  17 , wherein the computer readable instructions further cause the processor to add a new layered solution according to a correlation result of the current profile and determine a certainty value thereof. 
     
     
         19 . The computer readable storage medium according to  claim 18 , wherein after stratigraphic correlations of all wells are completed, the computer readable instructions further cause the processor to obtain a certainty contour map by interpolation according to a certainty value of each layered solution at well points. 
     
     
         20 . The computer readable storage medium according to  claim 18 , wherein after stratigraphic correlations of all wells are completed, the computer readable instructions further cause the processor to obtain a most possible certainty contour map for each layer by interpolation according to a layered solution corresponding to a maximum certainty value of the layer. 
     
     
         21 . The computer readable storage medium according to  claim 18 , wherein after all wells are closed, the computer readable instructions further cause the processor to count an average certainty value of all wells in each layered solution or an average maximum certainty value of all wells in each layer. 
     
     
         22 . A device, comprising:
 a processor; and   a memory containing computer readable instructions which when being executed, cause the processor to:   determine a plurality of possible correlation positions in a well with uncertain layered position in a profile, in a stratigraphic correlation process;   assign a qualitative or quantitative certainty value to the plurality of correlation positions; and   store and display the plurality of correlation positions and certainty values thereof as different layered solutions on the profile, respectively.   
     
     
         23 . The device according to  claim 22 , wherein the computer readable instructions further cause the processor to display the correlation position and the certainty value of the well in the current profile, respectively, when other profile passes through the well. 
     
     
         24 . The device according to  claim 23 , wherein the computer readable instructions further cause the processor to modify the certainty value of the layered solution according to a correlation result of the current profile. 
     
     
         25 . The device according to  claim 23  or  24 , wherein the computer readable instructions further cause the processor to add a new layered solution according to a correlation result of the current profile and determine a certainty value thereof. 
     
     
         26 . The device according to  claim 25 , wherein after stratigraphic correlations of all wells are completed, the computer readable instructions further cause the processor to obtain a certainty contour map by interpolation according to a certainty value of each layered solution at well points. 
     
     
         27 . The device according to  claim 25 , wherein after stratigraphic correlations of all wells are completed, the computer readable instructions further cause the processor to obtain a most possible certainty contour map for each layer by interpolation according to a layered solution corresponding to a maximum certainty value of the layer. 
     
     
         28 . The device according to  claim 25 , wherein after all wells are closed, the computer readable instructions further cause the processor to count an average certainty value of all wells in each layered solution or an average maximum certainty value of all wells in each layer.