DESCRIPTION
Thixsal-Ultra is a proprietary drilling
and completion system based on patented technology. Use of improved
bridging particle distributions reduce filtration control polymer
requirements while providing more dense, ultra-low permeability
filter cakes. Size ranges, concentrations, and blends of soluble
solids are optimized to bridge and seal specific formation pore
throat openings. As a successor to the
Thixsal-Plus system, Thixsal-Ultra is an ideal candidate for highly
deviated and horizontal wells. In addition to drilling into the
payzone, Thixsal-Ultra can be utilized in
underreaming, milling and washing sand. Packaging is in 50 lb or 25
kg sacks.
FEATURES
- Superior rheological properties at low and high shear rates for
outstanding hole cleaning and hole gauge, especially for horizontal
drilling in unconsolidated formations
- Thin, ultra-low permeability filter cake that limits filtrate
invasion into the formation yet cleans up easily to allow maximum
production
- Thermal stability of basic system is 275°F with addition of
pH Buffer
- Upper temperature limit is extended to 325°F with inclusion of
Thermasal™ -A, Thermasal-B, and
Polytex AHT
- Four bridging particle distributions below 60 mesh
(Ultrasals)can be blended together
and formulated in ratios necessary to maximize filter cake
design
- Performs in a wide range of formation permeabilities
- Incorporates the use of Inhibisal Ultra®
B for well bore stability when drilling through
shale
- Specialized cleanup techniques fit downhole drilling and
completion equipment and procedures
ADVANTAGES
- Utilizes Ultra Breake M®, a unique breaker
system to ensure filter cake removal
- Lower filtrates with less solids that result in thinner filter
cakes
- Less system viscosity at circulating shear rates
- Higher density systems available with inert weighting solids
and good filtration control without excess filtrate reducer
- Increased percentage of soluble solids below 10 microns lessens
total polymer requirements while providing more efficient particle
distributions with less total solids
- More efficient filter cake removal with less polymer and
solids
| PRODUCT |
COMPONENTS |
FUNCTIONS |
|
Thixsal-Ultra
|
Derivatized starch, xanthan gum biopolymer
|
Viscosifier
|
|
FL-7 Plus®
|
Derivatized starch
|
Fluid loss control additive
|
|
Ultrasals
|
Sized, evaporated NaCl
|
Bridging particles
|
|
Plug-Sals
|
Medium to coarse NaCl
|
Bridging/lost circulation additives
|
|
CM-TH
|
Inorganic salt
|
Complexing buffer for cement contamination
|
|
Inhibisal Ultra B
|
Polyglycol
|
Well bore stabilizing
additive/lubricant
|
|
pH Buffer
|
Magnesia compound
|
Buffer to maintain alkaline pH
|
|
Thermasal-A & B
|
Anhydrous salt and magnesia compound
|
Two component thermal stabilizing system
|
|
Polytex AHT
|
Polymer blend
|
High temperature fluid loss control additive
|
|
Defoam 2
|
Water miscible gycol mixture
|
Defoamer
|
|
Lubetex®
|
Non-polluting oils and surfactants
|
Lubricant
|
|
Ultra Breake M
|
Magnesium peroxide
|
Internal filter cake breaker
|
D-50 PARTICLE SIZE & THEORETICAL SEALING
CAPABILITY
| PRODUCT |
D-50
(microns)
|
PORE SIZE
(microns)
|
PERMEABILITY
(mD)
|
|
Ultrasal™ 5
|
5
|
15
|
225
|
|
Ultrasal 10
|
10
|
30
|
900
|
|
Ultrasal 20
|
20
|
60
|
3,600
|
|
Ultrasal 30
|
30
|
90
|
8,100
|