Method and apparatus for improved measurement of drilling conditions
US5654503A · kind A · utility
13Cited by
10References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1996 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Sep 11, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B44/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In drilling a well, a condition at the surface which contributes to a downhole condition is identified. A set of observed measurements is collected for the surface and downhole conditions. From this set of observations a predictor equation is derived which expresses the downhole condition as a function of the measured surface condition. After the predictor equation has been developed, it is applied to a measured surface condition to estimate the resulting downhole condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.