Well treating composition and method

Wells – Processes – Placing fluid into the formation

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

166308, 252 8551, 252 8553, E21B 4326, E21B 4327

Patent

active

046050680

ABSTRACT:
There is disclosed a method of treating a subterranean substantially carbonate-free sandstone formation associated with a well completed in said substantially carbonate-free sandstone formation comprising displacing into said formation through said well an effective amount of an acidic aqueous solution comprising from about 5 to about 36 weight % phosphoric acid, from about 0.6 to about 5 weight % of a highly polar surface active agent which is a citric acid-monoethanolamine elimination reaction product, and an effective amount of a ferrous metal corrosion inhibitor. For treating a subterranean limestone or dolomitic formation or a sandstone formation having a substantial carbonate content there is additionally included in the acidic aqueous solution an amount of a phosphate crystal modifying agent sufficient to control crystal growth, minimize crystal agglomeration and minimize crystal adhesion to the formation. The acidic aqueous solutions exhibit clay shrinking and/or stabilizing properties and a lengthy spending time relative to that of conventional hydrochloric acid-based acidizing compositions.

REFERENCES:
patent: 2175095 (1939-10-01), Stoesser
patent: 2763326 (1956-09-01), Cardwell et al.
patent: 2814593 (1957-11-01), Beiswanger et al.
patent: 3095379 (1963-06-01), Schwartz
patent: 3294695 (1966-12-01), Tippett
patent: 3348613 (1967-10-01), Irani
patent: 3642641 (1972-02-01), Tedeschi et al.
patent: 3916994 (1975-11-01), Maddox et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Well treating composition and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Well treating composition and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well treating composition and method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1931834

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.