Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation
US8143570B2 · kind B2 · utility
1Cited by
18References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2008 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | May 15, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/085
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to methods and apparatus for determining a downhole parameter in an underbalanced drilling environment which include: selectively activating a first fluid flowing from the formation through a wellbore while under balanced drilled; detecting the activated first fluid, and determining a depth at which said fluid enters the wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.