Sanheal Pill may be used in fresh water, sea water, produced brine, and sodium or calcium chloride brines.

Sanheal Pill is used as a pill for spotting across lost circulation zones. The typical concentration of Sanheal Pill is 50 lb/bbl of base fluid. The volume of the pill will vary according to the length of the lost circulation zone, severity of lost circulation, and hole size, but should be twice the volume required to cover the problem zone.

Severe or complete lost circulation may require the addition of larger bridging particles. Sluggits (bridging carbonates) with a fine to coarse particle distribution may be added in concentrations of 10 to 75 lb/bbl.

Use a pump truck equipped with a hopper or clean mixing tank with at least one sub-surface gun and a standard mud hopper. Add Sanheal Pill through a hopper at the rate of one sack per 3-5 minutes. Continue to circulate for at least 30 minutes before placing downhole.

Sanheal Pill has been demonstrated in the laboratory and the field to be essentially non-damaging. The filter cake formed in using Sanheal Pill may be removed by treating with 15% hydrochloric acid.

D-50 PARTICLE SIZE & THEORETICAL SEALING CAPABILITY