System and method for exploiting natural gas hydrate with downhole gas-liquid synergic depressurization
US12024984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2022 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Oct 24, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/385
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for exploiting natural gas hydrate with downhole gas-liquid synergic depressurization includes a casing configured to form an exploitation well. An upper end of the exploitation well is connected to a produced gas collection pipeline, and the produced gas collection pipeline is configured to be connected to a produced gas recovery system. A perforated channel is distributed in a section of the casing located in a natural gas hydrate reservoir. A tubular string component assembly is mounted in the exploitation well, and includes an outer string, a production tubular string and an auxiliary riser. A first check valve is mounted at the bottom of the outer string, a gas supply pipeline is connected into an upper portion of the outer string, and a flow controller is mounted in the gas supply pipeline. The production tubular string is mounted in the outer string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.