Downhole mixing device for mixing a first fluid with a second fluid

US8708049B2 · kind B2 · utility

Assignee

• SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

• Jimmy Lawrence · Cambridge, US
• Douglas W. Grant · Austin, US
• Jane Lam · Randolph, US
• James Haug · Danbury, US
• Roman Kats · Brookline, US
• Christopher Harrison · Vashon, US
• Andreas Hausot · Paris, FR
• Michael O'Keefe · London, GB
• Oliver C. Mullins · Ridgefield, US
• Ronald E. G. van Hal · Watertown, US

Key dates

• Filing date: Apr 29, 2011
• Grant date: Apr 29, 2014
• Expiry date: Mar 14, 2032

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B49/088
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

Methods and devices for mixing a first fluid with a second fluid downhole include a chamber having a first end, a second end and an opening for fluid to flow there through. A top surface of a perforated piston is capable of contacting the second end and a top surface of a piston is capable of contacting a bottom surface of the perforated piston. The perforated piston is located at a first position within the chamber based upon characteristics of a first fluid. A first fluid delivery system supplies the first fluid and a second fluid delivery system supplies a second fluid to the chamber, wherein the second fluid is at a pressure that moves the piston approximate to the first end. An actuating device applies a force against the bottom surface of the piston to inject the fluids through channels of the perforated piston to produce spray droplets.