Shree Digvijay Cement  
Shree Digvijay Cement Company Limited
A Cimpor Group Company
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 Other Products :
Ordinary Portland Cement 53 grade (OPC) as per BIC / BC / ASTM / SLS standards
Oridinary Portland Cement 43 grade (OPC)
Birla Plus Cement (Portland Pozzolana Cement)
Sulphate Resisting Portland Cement (SRPC)
Railway Sleeper Manufacturing Cement (53-S Grade OPC)
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Oil Well Cement Class 'G' Grade HSR
(as per API SpecificationS 16A)
Enhances long-term stability of oil wells
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Oil Well Cement is commonly used in the form of cement slurry for cementing oil wells under extreme conditions of high temperature and pressure under Sea etc.
ADVANTAGES
Better workability, low heat of hydration and long-term stability of oil wells.
Its low viscosity results in better pumping.
Rapid setting after completion of pumping.
Development of specified strength and enhanced durability.
Bonds and supports the well casing string
Restricts fluid movement between formation thereby preventing contamination of fresh water
Seals lost circulation or "thief zones"
Protects casing from corrosion due to subsurface mineral waters and electrolysis from the outside
Rapid setting prevents blowout encountered in the high pressure zone
IDEAL APPLICATIONS
Bonds and supports the well casing string
Restricts fluid movement between formation thereby preventing contamination of fresh water
Seals lost circulation or "thief zones"
Protects casing from corrosion due to subsurface mineral waters and electrolysis from the outside
  Rapid setting prevents blowout encountered in the high pressure zone
API SPECIFICATIONS OF OIL WELL CEMENT Class 'G' Grade HSR & SDCC NORMS
Sr.No. Description Unit Req. as per10A April 2002 (23rd Edition) SDCC Norms
A) CHEMICAL COMPOSITION
1. Magnesium Oxide(MgO) % 6.0 Max 2.0 Max.
2. Sulphuric Anhydride(SO3) % 3.0 Max 2.5 Max.
3. Loss on Ignition(LOI) % 3.0 Max 2.5 Max.
4. Insoluble Residue (IR) % 0.75 0.60Max.
5. Tricalcium Silicate (C3S) % 48.00 Min
65 Max		 53-62 Max.
6. Tricalcium Aluminate (C3A) % % 3.0 Max. 2.75 Max.
7. TwiceTricalcium Aluminate + Tetra Calcium aluminoferite
(2C3A + C4AF)		 % 24.0 Max. 23.75Max.
8. Alkali as Na2O equivalent % 0.75 Max. 0.6 Max.
B) PHYSICAL PROPERTIES
1. Mix Water, % of the weight of Cement. % % 44 44
2. Free fluid content % 5.90 Max. 4.50 Max.
3. Pressure Temperature thickening time test, schedule 5  
  a) Maximum consistency 15-30 Minutes stirring period (Bearden unit of consistency) Bc 30.00 Max. 25.0 Max.
b)Thickening time Minute 90-120 90-120
4. Compressive Strength (Eight hours curing at atmospheric pressure)  
  a) 38ºC Curing temperature Psi 300 Min. 500 Min.
b) 60ºC Curing temperature Psi 1500 Min. 1650 Min.
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