Experimental device for simulating invasion of shallow fluid into wellbore
US10876397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2019 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | May 28, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention provides an experimental device for simulating invasion of shallow fluid into a wellbore, comprising: a casing pipe; a drilling-in device including a drill string extending into the casing pipe, and a drill bit located within the casing pipe and connected to the drill string; a driving device for driving rotation of the drill string, the driving device being disposed outside the casing pipe and connected to the drill string; a drilling fluid injection device for injecting drilling fluid into the drill string, the drilling fluid injection device being disposed outside the casing pipe and connected to the drill string; a shallow fluid injection device for injecting shallow fluids into the casing pipe, the shallow fluid injection device being disposed outside the casing pipe and communicating with the casing pipe; a pressure detection device for detecting a pressure within the casing pipe, the pressure detection device being connected to the casing pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.