Method of controlling porosity of well fluid blocking layers and

Details Method of controlling porosity of well fluid blocking layers and Method of controlling porosity of well fluid blocking layers and

1993-03-26

1994-10-11

Dawson, Robert A.

Liquid purification or separation

Structural installation

Geographic

210496, 2105101, 166278, B01D 3920

Patent

active

053544560

ABSTRACT:
A method of control of the porosity of wells with a fibrous fluid blocking layer disposed on formation faces is provided. By means of mineral fiber pellets of critical dimensions wherein the mineral fibers are highly soluble in acid, a fluid blocking layer formed of semi-dispersed pellets can bridge formation face pores subject to removal at will by acid treatment. Thus after well rework the plugging layer is treated by an acid solution after sealing the formation faces to prevent fluid losses to quickly dissolve the mineral fibers to the desired extent for control the porosity. A novel well workover product making the method possible is formed from raw material clinkers of highly acid soluble mineral fibers of between 5 to 15 microns in diameter by grinding in a hammermill into pellets of a range of 1/32 inch to 1/2 inch in diameter with an average being between 1/16 inch to 1/8 inch and with fiber lengths between 1/64 inch to 3/8 inch. The product has other uses in finishing wells, retaining sand geological formation faces and controlling hydraulic stress. Very little production is lost from a well reworked with this product after removal by acid treatment.

REFERENCES:
patent: 2353372 (1944-07-01), Stone
patent: 2502191 (1950-03-01), Williams
patent: 3306355 (1967-02-01), Maly
patent: 3547194 (1970-12-01), Morine
patent: 3979217 (1976-09-01), Sutton
patent: 4101425 (1978-07-01), Young et al.
patent: 4101426 (1978-07-01), Maly et al.
patent: 4703803 (1987-11-01), Blumer
patent: 5145806 (1992-09-01), Shirakawa et al.
patent: 5225276 (1993-07-01), Akiba et al.
patent: 5227342 (1993-07-01), Anderson et al.

Affiliated with

Also associated with

Rating

Method of controlling porosity of well fluid blocking layers and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of controlling porosity of well fluid blocking layers and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of controlling porosity of well fluid blocking layers and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1656428