Apparatus for reducing water production in gas wells
US7757761B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 2008 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | May 11, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/088
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Production of liquids into a production string is regulated at inlets to the production string. An annular space is defined between a base pipe and a surrounding screen. The base pipe has inlets near one end of the screen and an overlaying shroud that spans over the screen and the inlet to the base pipe so as to define a restricted annular path to the base pipe opening and within the screen. A porous material is placed in the annular space and extends over the base pipe opening. If gas with liquid is produced, the gas having a lower density and viscosity preferentially gets through the porous media while the denser and more viscous water or other liquid is kept out due to greater resistance to flow offered by the porous media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.