DESCRIPTION
The Ultra Carb System is the ideal
drill-in fluid for density requirements from 8.5 lb/gal to 13.0
lb/gal where potassium chloride, sodium chloride, calcium chloride,
or sodium bromide brines are preferred. The system provides
excellent rheological properties to 250°F when used as a
circulating fluid. It can be used for drilling into the payzone,
underreaming, milling, and washing sand. The Ultra Carb System offers the flexibility of a
calcium carbonate fluid and all the features and benefits of the
ULTRA Systems with the proven
performance of the patented Thixsal-Ultra®
viscosifier.
FEATURES
- Five bridging particle distributions below 80 mesh
(Ultra Carbs) can be blended together and
formulated in ratios necessary to maximize filter cake design
- A significant reduction in polymer concentrations without
sacrificing rheological properties
- Formation of ultra-thin filter cakes with improved filtrate
control
- Adaptable to a broad range of brines to meet the temperature,
density, and environmental conditions of most wells
- Designed for use with Inhibisal Ultra®
B for wellbore stabilization when drilling
shales
- Utilizes Ultra Breake M®, the
patented internal filter cake breaker, for the ultimate cleanup
process at downhole temperatures below 190°F
ADVANTAGES
- Superior rheological properties at high and low shear rates
result in excellent hole cleaning and hole gauge, especially in
unconsolidated formations
- Reduced filtrate and polymer invasion into the producing
formation
- Easier filter cake removal due to reduced polymer and solids
content, especially when Ultra Breake M is
utilized
| PRODUCT |
COMPONENTS |
FUNCTIONS |
|
Thixsal-Ultra
|
Derivatized starch and xanthan gum biopolymer
|
Viscosifier/filtration control
|
|
FL-7 Plus®
|
Derivatized starch
|
Fluid loss control additive
|
|
Ultra Carbs
|
Sized calcium carbonate
|
Bridging particles
|
|
Sluggits
|
Medium to coarse CaCO3
|
Bridging/lost circulation additives
|
|
pH Buffer
|
Magnesia compound
|
pH stabilize
|
|
Inhibisal Ultra
B
|
Glycol mixture
|
Shale stabilizer and lubricant
|
|
Lubetex™
|
Non-polluting oil and surfactants
|
Lubricant
|
|
Defoam 2
|
Water miscible glycol mixture
|
Defoamer
|
|
Ultra Breake M
|
Magnesium peroxide
|
Internal filter cake breaker
|
D-50 PARTICLES SIZE &
THEORETICAL SEALING CAPABILITY
| PRODUCT |
D-50
(microns)
|
PORE SIZE
(microns)
|
PERMEABILITY
(mD)
|
|
Ultra Carb 2
|
2
|
6
|
36
|
|
Ultra Carb 5
|
5
|
15
|
225
|
|
Ultra Carb 12
|
12
|
36
|
1,296
|
|
Ultra Carb 20
|
20
|
60
|
3,600
|
|
Ultra Carb 30
|
30
|
90
|
8,100
|