Deep sea natural gas hydrate riser-free exploration system and method
Through the deep-sea natural gas hydrate water-free exploration system, the safety and integrity problems in deep-sea natural gas hydrate exploration and production are solved, safe, reliable and economical continuous production is achieved, and the constant low pressure state of natural gas hydrate is maintained.
Patent Information
- Application Number
- CN201910220095.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-03-21
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2039-03-21
AI Technical Summary
The prior art has safety and integrity problems in the exploration and production of deep-sea natural gas hydrate. Traditional drilling technology is difficult to meet the requirements of the deep-sea environment. The pressure reduction process relies on electric submersible pumps, which easily lead to production stopping due to insufficient flow.
The deep-sea natural gas hydrate water-free pipe exploration system is adopted. The system includes a water-free natural gas hydrate blowout preventer, an underwater pump module and a natural gas hydrate separator. Drilling, testing and production are achieved through the connection of the drilling platform and the subsea equipment. The system does not use marine water cushions, the drilling rod directly passes through the open water body for drilling, and controls the decompression of natural gas hydrates by reducing the liquid level in the gas production pipeline.
The safe, reliable and economical continuous production of deep-sea natural gas hydrates is achieved, and the natural gas hydrates are kept at a constant low pressure, avoid the risk of free water freezing, ensure the stability and low pressure state of the production process, and are not affected by the production rate.