System and Method for Automated Data Analysis and Parameter Selection

• US 20090037111A1
• Filed: 07/30/2007
• Published: 02/05/2009
• Est. Priority Date: 07/30/2007
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (SLB)
• Original Assignee: Schlumberger Technology Corporation (SLB)
• Inventors: Perchonok, Robert, McCoy, Matthew, Radtke, Richard J.
• Granted Patent: US 8,244,473 B2
• Time in Patent Office: Days
• US Class Current: 702/11
• CPC Class Codes: G01V 11/00 Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
• CPC Class Codes: G01V 2210/6167 Nuclear

Abstract

System and method for automatic analysis and determination of a parameter. Measurement data are obtained from one or more sensors deployed to measure a desired parameter, the data being associated to identified locations. The measured data are processed to parse out the data obtained with at least one sensor configured to provide a measurement of a selected subsurface parameter and examined to automatically output a value determined to be the most accurate value for the selected parameter from the obtained measurement data.

Claims

1. A method for determination of a subsurface parameter, comprising:

obtaining measurement data from at least one sensor deployed subsurface to measure a parameter, the data being associated to identified subsurface locations;

processing the obtained measurement data to parse out the data obtained with at least one sensor configured to provide a measurement of a selected subsurface parameter; and

processing the parsed out measurement data for examinations to automatically output a value determined to be an accurate value for the selected subsurface parameter from the obtained measurement data.

2. The method of claim 1, wherein processing the obtained measurement data comprises parsing out the data obtained with all the sensors configured to provide a measurement of the selected subsurface parameter.

3. The method of claim 2, wherein processing the parsed out measurement data comprises selecting more robust measurement data for examination before less robust measurement data and selecting the first data value of adequate accuracy as the output value for the selected parameter.

4. The method of claim 3, wherein the obtained measurement data are processed to output the selected parameter value while the at least one sensor is deployed subsurface.

5. The method or claim 2, wherein the measurement data is processed to automatically output respective values for one or more selected subsurface parameters corresponding to measurement data obtained at various subsurface locations.

6. The method of claim 3, wherein examination of the measurement data for an accuracy determination is based on the used of a specific sensor type to obtain the measurement data a quality control indicator associated with a measurement, a measurement or parameter reflecting the measured environment, or on field or laboratory derived data.

7. The method of claim 2, wherein processing the obtained measurement data comprises eliminating inconclusive data and selecting a parameter value indicated by the majority of the remaining data as the accurate parameter value.

8. The method of claim 2, wherein processing the parsed out measurement data comprises adjusting the order of examination among more robust measurement data and less robust measurement data based on an environmental condition.

9. The method of claim 2, wherein the selected subsurface parameter is a fluid type and the output comprises a value designed as one of liquid, gas, or inconclusive.

10. The method of claim 1, wherein examination of the measurement data for an accuracy determination comprises examining the data sequentially, beginning with the most robust measurement first, and outputting the first value determined to be accurate for the selected parameter.

11. The method of claim 10, further comprising inferring a value for the selected parameter from other data if all the measurement data have been examined resulting in an inconclusive value.

12. The method of claim 2, wherein processing the obtained measurement data comprises eliminating inconclusive data and performing a weighted average of the remaining data to determine a value for the selected parameter.

13. The method of claim 12, wherein the weights are set equal or based on a subsurface condition such that measurement data determined to be more accurate are given a larger weight.

14. The method of claim 2, further comprising inputting the output parameter value to an interpretation algorithm configured to relate the value to a petrophysical characteristic.

15. A system for determination of a subsurface parameter, comprising:

a processor to accept measurement data obtained from at least one sensor deployed subsurface to measure a parameter, the data being associated to identified subsurface locations;

the processor configured with instructions to process the obtained measurement data to parse out the data obtained with at least one sensor configured to provide a measurement of a selected subsurface parameter; and

the processor instructions including processing the parsed out measurement data for examination to automatically output a value determined to be an accurate value for the selected subsurface parameter from the obtained measurement data.

16. The system of claim 15, wherein the processor instructions for processing the obtained measurement data include parsing out the data obtained with all the sensors configured to provide measurement of the selected subsurface parameter.

17. The system of claim 16, wherein the processor instructions for processing the parsed out measurement data include selecting more robust measurement data for examination before less robust measurement data and selecting the first data value or adequate accuracy as the output value for the selected parameter.

18. The system of claim 15, wherein the processor instructions for processing the obtained measurement data include eliminating inconclusive data and selecting a parameter value indicated by the majority of the remaining data as the accurate parameter value.

19. The system of claim 15, wherein the processor instructions for processing the obtained measurement data include eliminating inconclusive data and performing a weighted average of the remaining data to determine a value for the selected parameter.

20. A computer program processable by a processor, comprising;

instruction to accept measurement data obtained from at least one sensor deployed subsurface to measure a parameter, the data being associated to identified subsurface locations;

instructions to process the obtained measurement data to parse out the data obtained with at least one sensor configured to provide a measurement of a selected subsurface parameter; and

instruction to process the parsed out measurement data associated to an identified subsurface location for examination in the order of most to least robust to automatically output the first data value of adequate accurate for the selected subsurface parameter from the obtained measurement dates.