DESCRIPTION
Formate Stabilizer is a low molecular
weight polyglycol blend formulated to stabilize rheological and
filtration control properties of polymer systems formulated in
formate brines. Formate Stabilizer is
recommended for use where bottom hole temperatures exceed 325°F.
Packaging is in 55 gal steel drums and 5 gal plastic
containers.
BASE BRINES
Formate Stabilizer can be mixed in
sodium, potassium, or cesium formate brines.
MIXING INSTRUCTIONS
Normal treatment is 1 - 3% by volume of Formate Stabilizer mixed into the system.
LOW SHEAR RATE VISCOSITIES
(0.0636 sec-1) AND FILTRATES
FOR A 17.6 lb/gal CESIUM/POTASSIUM FORMATE SYSTEM
| PROPERTIES |
INITIAL |
STATIC AGE/
64 Hours
|
|
A
|
LSRV, cP
|
30,000
|
Complete Separation
|
|
Filtrate, mL
|
8.5
|
No Control
|
|
B
|
LSRV, cP
|
15,500
|
27,700
|
|
Filtrate, mL
|
9.0
|
6.0
|
| Composition A |
Composition B |
|
0.98 bbl 17.5 lb/gal CsCOOH/KCOOH Brine
1.0 lb/bbl Formavis Ultra
8.0 lb/bbl Formatrol®
1.5 lb/bbl Thermasal™-B
19.0 lb/bbl CaCO3 (D-50, 12 microns)
|
0.98 bbl 17.5 lb/gal CsCOOH/KCOOH Brine
1.0 lb/bbl Formavis Ultra
8.0 lb/bbl Formatrol
1.0 lb/bbl Thermasal-B
1% v/v Formate Stabilizer
19.0 lb/bbl CaCO3 (D-50, 12 microns
|
| TEST
PARAMETERS |
| Rheological properties: |
120°F |
| Static age: |
340°F |
| HTHP test media: |
400 mD saturated disk |
| Filtrate, (30 minutes): |
340°F |
| Pressure differential: |
250 psi |