Grouting and water blocking method for directional hole with large offset in hard rock stratum
US12196076B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2024 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Jun 21, 2044 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed is a grouting and water blocking method for a hard rock stratum. The grouting and water blocking method include the following steps. At first, hydrogeological information and coal seam information of a hard rock stratum is obtained. Then, a drilling trajectory of the hard rock stratum is determined based on the hydrogeological information and the coal seam information. Later, at least one drilling device is determined corresponding to the drilling trajectory based on types of multiple rock layers contained in the hard rock stratum. After that, the multiple rock layers contained in the hard rock stratum are drilled sequentially according to the drilling trajectory using the at least one drilling device. At last, in response to determining there is a water leakage area, the water leakage area is grouted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.