Multi-stage temporary plugging fracturing method based on stress cage effect, device thereof and storage medium
US12345147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2024 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | May 17, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present disclosure relates to a multi-stage temporary plugging fracturing method based on a stress cage effect, a device thereof and a storage medium, which are applied to the technical field of oil and gas exploitation. The method includes: determining a plugging point by acquiring a weak stress position on a major fracture; determining the consumption of temporary plugging deflection fluid by calculating a net pressure in a fracture that needs to be increased to generate a branch deflection fracture at the position where a principal stress is minimum; plugging a weakest stress position in the major fracture to form an artificial shielding layer, preventing subsequent fluid pressure from passing forward, thereby changing a geostress field near this position, thus forming an additional induced stress field near the weak position, generating a stress cage effect, and realizing formation of a multi-stage temporary plugging branch fracture in vertical wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.