Single-tube double-wellhead drilling and production apparatus
US11603729B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 31, 2022 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Mar 31, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A single-tube double-wellhead drilling and production apparatus is provided, which includes a suction pile, two first wellhead heads, two second wellhead heads, two second guiding pipes, two tubings, two tubing hangers, and two plugs located inside and connected with a corresponding second wellhead head. Each second wellhead head is connected to a corresponding first wellhead head and is connected through a connecting pipeline which is provided with a control valve and a check valve. One end of each first wellhead head is connected with a corresponding first guiding pipe connected with the suction pile. Each second guiding pipe is located inside a corresponding first guiding pipe and is connected to an end of a corresponding second wellhead head. Each tubing hanger is located in and connected with a corresponding second wellhead head, is located below and communicates with a corresponding plug, end of which is provided with a corresponding tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.