Patent ID: 8244473

Claim:
A computer-implemented method for determination of a subsurface parameter, comprising: obtaining, with a computer, raw measurement data from at least one sensor deployed subsurface, the raw measurement data being associated to identified subsurface locations, and the at least one sensor comprising a first sensor and a second sensor; processing, with the computer, the obtained raw measurement data to parse out a measurement of a selected subsurface parameter from the raw measurement data obtained with the at least one sensor; and processing, with the computer, the measurement of the selected subsurface parameter obtained from raw measurement data obtained with the at least one sensor for examination to automatically output a value determined to be an accurate value for the selected subsurface parameter by steps comprising: processing raw measurement data obtained from the first sensor to parse out a first measurement of a selected subsurface parameter from the raw measurement data obtained with the first sensor, and processing raw measurement data obtained from the second sensor to parse out a second measurement of the selected subsurface parameter from the raw measurement data obtained with the second sensor; wherein the selected subsurface parameter comprises a borehole fluid type, wherein the output comprises a value designated as one of liquid, gas, or inconclusive, wherein the a value for the selected subsurface parameter is inferred from other data input by a user in response to a determination that all the raw measurement data have been examined resulting in an inconclusive value, wherein the first sensor comprises a natural gamma ray sensor, and wherein the second sensor comprises a set of low-energy gamma ray sensors.