Method of producing impact point position probability maps for a well
US6446006B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Oct 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/282
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method of producing impact point position probability maps for a well. It consists in defining a fixed, invariant target point chosen a priori on an initial location E0 of the surface S, discretizing the surface S with the aid of a grid composed of nodes and of grid cells, assigning at least one elementary geometrical uncertainty vector to each node of the grid of the surface S, determining a statistically significant number of occurrences of locations of the surface S as a function of the geometrical uncertainties affecting it, projecting the target point onto each occurrence of location of the surface so as to deduce a point of impact therefrom, transferring the set of impact points onto the location E0 of the surface S by allocating, to each of these points, surface co-ordinates identical to those which it had on the occurrence of location of the surface containing it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.