Types of Oil Well Cement
Oil-well cement is utilized for cementing work in the boring of oil wells where they are liable to high temperatures and pressures. They more often than not comprise Portland or Pozzolanic concrete with uncommon natural retarders to prevent the cement from setting quickly. This is utilized for both, the on-shore as well as the off-shore oil wells. As the number of oil well cement suppliers in India is rising consistently, oil well cement sales have also increased.
The manufacturing process of oil well cement
Oil well cement manufacturers produce this cement from the cinder of Portland cement and furthermore from cement that is hydraulically blended. Oil well cement sets gradually as it contains natural ‘retarders’ which keep it from setting too quickly. It is because of these qualities that it is utilized in building oil wells where the pressure is around 20,000 PSI and the temperature is around 500 degrees Fahrenheit.
Types of oil well cement
1. Grade O or Ordinary which is utilized commonly.
2. HSR or High Sulphate Resistant.
3. MSR or Moderate Sulphate Resistant.
Each grade is utilized where it is relevant to a specific scope of oil well sulfate situations, temperatures, pressures, plus depths. Oil well cement has turned out to be exceptionally beneficial for the oil business because of its attributes.
The raw materials needed to produce Oil Well Cement are:
• Limestone
• Coke
• Iron Ore
• Iron Scrap
Uses of oil well cement:
• Hydraulic fasten
Well concrete is utilized as a part of the oil wells to frame a water-powered seal between the oil well casing and the underground creation. This seal must be free of channels and impermeable to gases if the well is to achieve its maximum production ability.
• Zonal separation
The primary reason for the well cement is to protect the environment, particularly the below ground water tables. Well cement secludes and averts the fluids and gases from entering the underground water, thereby protecting the water supplies.
• Support structure
Structural support is critical for the casing pipe as well as production pipes. Oil well cement is utilized to shape a sheath between the wellbore and the casing pipe. A bond is framed between the underground foundation and the pipe, securing it in place in addition to lending support for the subway well structure.
• Strength
Well cement is utilized to keep the weakening of the underground casing and generation pipe strings. Well cement ensure the housings and generation strings against rust.
• Well life
Well cement is fundamental to a longer “well life”, generally this would incredibly influence the oil and gas well industries financially.
Advantages of Oil well Cement
• The setting time is handy with added substances to allow placement to 550º F (287º C).
• It has incredible retarder reaction for higher monetary advantage in mix plan.
• It has low free liquids for cement reliability and stability.
• This cement has high sulphate opposition for high stability under inconsiderate conditions.
• This cement has steady quality for slurry design portability.