Method and system for extracting features of logging while drilling and drilling-time logging based on UNET dual-channel output
US11988090B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2023 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | Jun 5, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A10/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present description relates to the field of geological exploration, and discloses a method and system for extracting features of logging while drilling and drilling-time logging based on Unet dual-channel output, aiming at solving the problem that the prior art 5 cannot integrate various types of information for lithology classification. The present invention comprises: acquiring stratum data of different wells; eliminating outliers, normalizing and resampling; performing data reconstruction via a self-encoder-based artificial neural network based on the pre-trained data to obtain stratum reconstructed data for training; inputting the data to be analyzed from shallow to deep in segments, performing 10 dynamic optimization while drilling on the pre-trained self-encoder-based artificial neural network by a quantile loss function; and extracting the independent components output by the encoder dual-channel for unsupervised clustering, and fitting to obtain a stratum lithology determination result corresponding to the current data to be analyzed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.