Method and system for GR LWD curve optimization for deep-field oil and gas precise navigation
US12173598B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2024 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Jan 18, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/045
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is in the field of geological exploration and particularly relates to a method and system for gamma ray (GR) while drilling parameter data optimization for deep-filed oil and gas precise navigation, aiming to solve the problem of insufficient measurement accuracy of the depth of a well in the existing drilling technology. The present invention comprises: eliminating outliers from the obtained GR while drilling parameter data and determining the rationality of the eliminated outlier; performing derivation on a real-time updated variance attribute while drilling curve to obtain a real-time updated formation change-point detection result; searching the formation change-point detection result of a pre-drilling predicted well curve; and correcting the drilling depth by comparing the two formation change-point detection results to obtain the accurate depth while drilling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.