High Density: Calcium chloride drilling fluid is particularly suitable for deep well (over 5000 meters) drilling operations due to its high-density characteristics. This high density helps maintain stability and safety during the drilling process.
Good Stability: Calcium chloride drilling fluid does not easily exhibit loss or leakage over long drilling periods, ensuring the smooth progress of drilling operations.
Good Permeability: Due to the small molecules and low viscosity of calcium chloride drilling fluid, it has excellent permeability, which can well meet the needs of core sampling and sediment sampling.
Cooling Effect: During drilling, calcium chloride drilling fluid can effectively cool the drill bit, preventing damage from overheating.
Corrosiveness: It is important to note that calcium chloride drilling fluid contains high concentrations of chloride ions and other corrosive substances, thus it has significant corrosiveness. This can cause a certain degree of corrosion and damage to the wellbore and equipment, requiring the use of special corrosion inhibitors to reduce its corrosiveness.
Stable Drilling Fluid: Calcium chloride drilling fluid can increase the density and stability of the drilling fluid, effectively preventing wellbore collapse and ensuring the safe conduct of drilling operations.
Adjusting Rheology: Calcium chloride drilling fluid can adjust the viscosity and rheology of the drilling fluid, optimizing the fluid dynamic performance during drilling and improving drilling efficiency.
Reducing Cement Slurry Density and Setting Strength: During drilling, calcium chloride material can be used as a cement accelerator, forming a colloidal cement slurry with the cement slurry, thereby reducing the density and setting strength of the cement slurry and increasing the success rate of plugging.
Stabilizing Mud Layers: Calcium chloride drilling fluid can stabilize mud layers at different depths, preventing mud layer collapse and loss of drilling fluid.
Lubricating Drilling: Calcium chloride drilling fluid also has a certain lubrication effect, which can reduce friction resistance during drilling, ensuring the smooth progress of extraction work.
Making Hole Plugs: High-purity calcium chloride can be used to make hole plugs, providing fixation for oil wells.
Environmental Measures: Due to the significant environmental pollution caused by calcium chloride drilling fluid, corresponding treatment measures need to be taken during use to reduce pollution to soil and groundwater.
Safety Protection: Calcium chloride is a moderately hazardous chemical. Safety protection measures should be taken during use, such as wearing protective gloves, protective glasses, and protective clothing to avoid direct contact with skin and eyes.
Storage Conditions: Calcium chloride drilling fluid should be stored in a dry, well-ventilated place, avoiding moisture and high-temperature environments.
