Process for the enhanced recovery of petroleum oil

Details Process for the enhanced recovery of petroleum oil Process for the enhanced recovery of petroleum oil

1999-03-08

2000-12-26

Tsay, Frank S.

Wells

Processes

Distinct, separate injection and producing wells

1663051, E21B 4322

Patent

active

061643793

ABSTRACT:
A process for the enhanced recovery of oil with the injection of treated water is described, the process comprising the previous and controlled precipitation of the precursor chemical species present in the injection water or sea water and formation or produced water, followed by the withdrawal of such species by filtration. The resulting treated water shows low amounts of precursor ions and is perfectly suited for use as injection water in secondary oil recovery processes. In view of the fact that the process uses huge amounts of produced water, it is of deep environmental interest since it avoids discarding into the marine environment the produced water which is high in brine content. The equipment used are simple and of low cost.

REFERENCES:
patent: 4110228 (1978-08-01), Tyler et al.
patent: 4247371 (1981-01-01), Roller
patent: 4723603 (1988-02-01), Plummer
patent: 5302297 (1994-04-01), Barthrope
patent: 5755972 (1998-05-01), Hann et al.
patent: 5840658 (1998-11-01), Rosario et al.

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