Method for drying out rock containing immobile formation water within the encroachment area of natural gas deposits and gas reservoirs

US6165948A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Wendelin Dewenter · Warburg, DE
• Kai-Udo Sewe · Barnstorf, DE
• Willibald Burger · Burghausen, DE
• Michael Geck · Burghausen, DE
• Ludwig Esterbauer · Ampfing, DE

Key dates

• Filing date: Jun 10, 1999
• Grant date: Dec 26, 2000
• Expiry date: Jun 10, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S507/928
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for drying out rock containing immobile formation water in the intake radius of natural gas wells and gas storage wells which deliver less than 50 l of water per 1000 m.sup.3 (S.T.P.) of natural gas produced, in which a dispersion comprising the components PA1 A) a water-repellent active compound, PA1 B) hydrophilic water-miscible dispersion medium, with or without PA1 C) a dispersant renders the water-containing rock hydrophobic.