Method of generating subsurface characteristic models
US4313164A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1979 |
| Grant date | Jan 26, 1982 |
| Priority date | — |
| Expiry date | Mar 12, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of computer generating a subsurface characteristic model which is substantially consistent with readings taken in a well with a well logging device. A set of actual measurement values which represent readings taken over a given depth interval of a well is derived. An initial trial model of the subsurface characteristic under investigation is then selected. Next, a simulated measurement value at a particular depth level is generated by applying the approximate response characteristic of the logging device to the model. The simulated measurement value at the particular depth level is compared to the actual measurement value at that depth level and an error value is generated as a function of the comparison. The model is then modified in accordance with the error value, the modification being performed over a depth interval which includes the model beds within a preselected span from the particular depth level. The procedure is then performed in this manner for other particular depth levels within the given depth interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.