INTRODUCTION
1. CTI-15 fluid loss additive is a synthetic polymer which is capable of effectively reducing water loss filtering from the slurry to porous formation during cementing process.
2. Control fluid loss mainly in normal density cement slurries.
3. Short thickening time and exhibits minor retardation properties at low temperature.
4. Used below temperature of 180℃(356℉, BHCT).
5. Applicable mixing water: from fresh water to half-saturated salt water.
6. Compatible well with other additives.
7. CTI-15 series consists of liquid, anti-freezing liquid, high purity powder, and dry-mixed powder .
PHYSICAL AND CHEMICAL INDICATORS
|
Type
|
Appearance
|
Density, g/cm3
|
Water-Solubility
|
|
CTI-15L
|
Colorless or faint yellow liquid
|
1.10 ± 0.05
|
100%
|
|
CTI-15L-A
|
Colorless or faint yellow liquid
|
1.15 ± 0.05
|
100%
|
|
Type
|
Appearance
|
Bulk Density, g/cm3
|
Water-Solubility
|
0.315mm Residues, %
|
|
CTI-15S-P
|
White or faint yellow powder
|
0.70±0.20
|
100%
|
<15
|
|
CTI-15S-D
|
Grey powder
|
0.90±0.10
|
35-80% soluble
|
<15
|
|
CTI-15S-T
|
White or faint yellow powder
|
0.90±0.10
|
100%
|
<15
|
RECOMMENDED DOSAGE
|
Type
|
CTI-15L(-A)
|
CTI-15S-P
|
CTI-15S-D
|
CTI-15S-T
|
|
Dosage Range (BWOC)
|
3.0-8.0%
|
0.7-2.5%
|
1.5-5.0%
|
1.5-5.0%
|
CEMENT SLURRY PERFORMANCE
|
Item
|
Test Condition
|
Technical Indicator
|
|
Density of the cement slurry, g/cm3
|
25℃, Atmospheric Pressure
|
1.90±0.01
|
|
Fluid loss, ml
|
Fresh water system
|
80℃, 6.9MPa
|
≤60
|
|
18% salt water system
|
≤150
|
|
18% salt water system
|
120℃, 6.9MPa
|
≤150
|
|
Thickening performance
|
Initial consistency, Bc
|
80℃/45min, 46.5MPa
|
≤30
|
|
40-100 Bc thickening time, min
|
≤40
|
|
Thickening time, min
|
50–150
|
|
Free fluid, %
|
80℃, Atmospheric Pressure
|
≤1.4
|
|
24h compressive strength, MPa
|
≥14
|
STANDARD PACKAGING AND STORAGE
1. The liquid type products should be used within 12 months after production. Packed in 25kg, 200L and 5 US gallon plastic barrels.
2. Powder products should be used within 24 months and S-T type powder product should be used within 18 months after production. Packed in 25kg bag.
3. Customized packages are also available.
4. Once expired, it shall be tested before use.
Oil Well Cement Test Instruments
