Solvent-assisted method for mobilizing viscous heavy oil

Details Solvent-assisted method for mobilizing viscous heavy oil Solvent-assisted method for mobilizing viscous heavy oil

E - Fixed Constructions

21

B

E21B 43/22 (2006.01) E21B 43/16 (2006.01)

Patent

CA 2185837

The invention provides a solvent-assisted method for mobilizing viscous heavy oil or bitumen in a reservoir under reservoir conditions without the need to adjust the temperature or pressure. The invention utilizes mixtures of hydrocarbon solvents such as ethane, propane and butane, which dissolve in oil and reduce its viscosity. Two or more solvents are mixed in such proportions that the dew point of the solvent mixture corresponds with reservoir temperature and pressure conditions. The solvent mixture, when injected into a reservoir, exists predominantly in the vapor phase, minimizing the solvent requirement. The invention can be practised in the context of paired injector and producer wells, or a single well cyclic system.

Méthode utilisant un solvant pour préparer les bitumes ou les hydrocarbures lourds visqueux dans un gisement sous les conditions de ce dernier, sans avoir à ajuster la température ni la pression. L'invention utilise des mélanges de solvants hydrocarbonés, comme l'éthane, le propane et le butane, qui se dissolvent dans les hydrocarbures et en réduisent la viscosité. Deux ou plusieurs solvants sont mélangés dans des proportions où le point de rosée du mélange correspond aux conditions de température et de pression du gisement. Le mélange-solvant injecté dans un gisement existe principalement dans la phase vapeur, ce qui réduit au minimum les besoins en solvant. L'invention peut s'appliquer à des puits appariés d'injection et de production, ou à un système cyclique de puits unique.

Affiliated with

Also associated with

Rating

Solvent-assisted method for mobilizing viscous heavy oil does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solvent-assisted method for mobilizing viscous heavy oil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solvent-assisted method for mobilizing viscous heavy oil will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1791612