DESCRIPTION

Sanheal Pill is a blend of hydroxyethyl cellulose (HEC) with other polymers and sized calcium carbonates, stabilized to prevent degradation by bacteria and temperature.  All components are soluble in 15% hydrochloric acid.  Sanheal Pill is packaged in 50 lb or 25 kg sacks.

BASE FLUIDS

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

APPLICATIONS

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.

MIXING INSTRUCTIONS

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.

NON-DAMAGING

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.

PRODUCT	COMPONENTS	FUNCTIONS
Sanheal Pill	Hydroxyethyl cellulose, derivatized starch, magnesia compound, sized calcium carbonate (1905 microns)	One-sack lost circulation treatment
Sluggit®, Sluggit CM, Sluggit Plus	Medium to coarse calcium carbonate	Bridging/lost circulation additives