CEMENT G - HSR
Product detail
1. Description:
Cement G - HSR is the product obtained from grinding Portland cement clinker (consisting essentially of calcium silicate curing in water - hydraulic calcium silicate) with the presence of only one or several types of gypsum as additive. No other additives except gypsum or water, or both, is ground or blended with this clinker in the manufacturing of cement class G. This product is used as a base cement for oil or gas drilling well. Cement class G can be categorized into two types: moderately sulphate - resistant and highly sulphate - resistant. Cement G - HSR meets API Spec 10A - 2010 standard, 24th edition.
2. Physical Properties:
Cement G - HSR is the product obtained from grinding Portland cement clinker (consisting essentially of calcium silicate curing in water - hydraulic calcium silicate) with the presence of only one or several types of gypsum as additive. No other additives except gypsum or water, or both, is ground or blended with this clinker in the manufacturing of cement class G. This product is used as a base cement for oil or gas drilling well. Cement class G can be categorized into two types: moderately sulphate - resistant and highly sulphate - resistant. Cement G - HSR meets API Spec 10A - 2010 standard, 24th edition.
2. Physical Properties:
- Appearance:Gray powder
- Bulk density (g/cm3) :3,18 ± 0,04
| No. | REQUIREMENTS | UNIT | REQUIRED | RESULTS |
| I | Chemical requirements | |||
| 1 | Magnesium oxide, MgO | % | 6,0 max | 1,28 |
| 2 | Sulfur trioxide, SO3 | % | 3,0 max | 2,53 |
| 3 | Insoluble residue, CKT | % | 0,75 max | 0,29 |
| 4 | Loss on ignition, MKN | % | 3,0 max | 1,13 |
| 5 | Tricalcium silicate, C3S | % | 48 ÷ 65 | 51,65 |
| 6 | Tricalcium aluminate, C3A | % | 3,0 max | 1,53 |
| 7 | Tetracalcium aluminoferrite (C4AF) plus twice the tricalcium aluminate (C3A), (C4AF + 2C3A) |
% | 24 max | 21,0 |
| 8 | Total alkali content expressed as sodium oxide (Na2O) equivalent, (Na2O + 0,658 K2O) |
% | 0,75 max | 0,41 |
| II | Physical requirements | |||
| 1 | Free-fluid content | (%) | 5,9 max | 4,1 |
| 2 | Compressive strength test (8 h curing time) | Mpa (psi) |
2,1 min (300) 10,3 min (1500) |
6,102 17,214 |
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| 3 | Thickening time test | minute | 90 ÷ 120 | 110 |
|
Bc | 30 max | 24 | |
4. Application:
Cement G - HSR is used to fill anular space between the well bore and casing or between the casings in oil and gas wells. Cement G - HSR can also be used in the construction of offshore structures, buildings as it can resist water intrusion containing sulphate ions.
5. Requirements for environment and safety:
Cement G – HSR is non-toxic and does not affect marine ecosystems. Personal Protective Equipments (PPE) is required when handling this product.
6. Packing:
Cement G – HSR is packed in 1 ton big bag or as requested by clients. This product should be kept in dry, cool place.
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