BARADRIL-MAG™ System

Designed to Secure Maximum Permeability of Acid Sensitive Injection Zones

The BARADRIL-MAG™ system is one of the fluid systems within Baroid's DRIL-N™ fluids family. It is specifically designed and formulated for drilling acid-sensitive formations prior to water injection. Instead of the conventional calcium carbonate used in acid-degradable drill-in fluids, the BARADRIL-MAG™ system utilizes specially processed sized MgO as bridging material that is removed with Baroid’s N-FLOW™ ammonium salt solution breaker. It does not require acid for cleanup.

Advantages of the BARADRIL-MAG System:

• Achieves the desired drill-in fluid properties with simple additives
  
• Improves wellbore clean-up efficiency / uniformity
  
• Maximizes injectivity without a live acid treatment
  
• Reduces the need for coil tubing intervention
  
• Unlike clean-up with acids and corrosion inhibitors, the clean-up fluid for the BARADRIL-MAG™ system is safer for both personnel and the environment, and helps prevent corrosion of downhole screens and tubulars.

Typical Formulations:

The BARADRIL-MAG™ system can be used in a wide range of base fluids including sodium chloride brine, sodium bromide brine and calcium chloride brine, in weight ranges from 8.33 to over 14.0 lb/gal. The following table shows formulations for sodium chloride and sodium bromide brines.