AL NABRAS AL AALIOilfield Chemicals — Baghdad · Dubai · serving Iraq, the Gulf & Africa
Oil well cement - API 10A Class G (HSR / High Sulphate Resistance) — supplied worldwide to Iraq, the Gulf and Africa.
Al Nabras Al Aali supplies Class G Cement from qualified international manufacturers, delivered against the acceptance criteria below with a Certificate of Analysis for every batch, batch number and production date on every package. Head office in Baghdad, Iraq with an international trading office in JAFZA, Dubai — supplying operators, drilling contractors and oilfield service companies across Iraq, the GCC and Africa.
| Item | Acceptance Criteria |
|---|---|
| Standard | API 10A / ISO 10426-1 - Class G, HSR |
| Appearance | Gray powder |
| Chemical - MgO, % | ≤ 6.0 |
| Chemical - SO₃, % | ≤ 3.0 |
| Chemical - Loss on ignition, % | ≤ 3.0 |
| Chemical - Insoluble residue, % | ≤ 0.75 |
| Chemical - Total alkali (Na₂O eq.), % | ≤ 0.75 |
| Chemical - C₃S, % | 48 - 65 |
| Chemical - C₃A, % | ≤ 3.0 |
| Chemical - 2 C₃A + C₄AF, % | ≤ 24 |
| Physical - Fineness (Blaine), m²/kg | ≥ 280 (typical) |
| Physical - Free fluid, mL / 250 mL slurry | ≤ 5.9 |
| Performance - Compressive strength @ 8 h / 38 °C | ≥ 2.1 MPa (≥ 300 psi) |
| Performance - Compressive strength @ 8 h / 60 °C | ≥ 10.3 MPa (≥ 1500 psi) |
| Performance - Thickening time @ Schedule 5g, min | 90 - 120 |
| Performance - Max consistency 15 - 30 min, Bc | ≤ 30 |
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