3M™ Glass Bubbles HGS4K28

• Successfully and predictably reduce the control fluid density
• Incompressible and more homogeneous control fluid properties compared to aerated systems

3M™ Glass Bubbles HGS4K28 breakage may occur if the product is improperly processed. To minimize breakage, avoid high shear processes, point contact shear such as gear pumps or 3-roll mills, and processing pressures above the strength test pressure for each product.

Appreciable changes in 3M™ Glass Bubbles HGS4K28 properties may occur above 1112°F (600°C) depending on temperature and duration of exposure.

3M™ Glass Bubbles HGS4K28 in drilling, completion and work-over fluids

• Eliminate the need for specialized equipment used in foamed cement
• Compatible with both water and oil based systems
• More economical and allow a greater density reduction window than synthetic oils
• Helps achieve and maintain the target density throughout the drilling operation:

1. Light - when synthetic oils are used as base fluid, densities as low as 5.5 lb/gal (0.66 kg/l) can be achieved.
2. Tiny - 3M™ Glass Bubbles HGS8000X and 3M™ Glass Bubbles HGS4K28 remain in the fluid when circulating through solids control equipment, including shale shakers, hydrocyclones and centrifuges.
3. Tough - resistant to shear and impact forces when circulating through bit nozzles and impacting formation walls.

• Offer the potential for higher performance through increased rate of penetration (ROP).
• Reduce your cost through reconditioning and reuse of the lightweight fluid.

3M™ Glass Bubbles HGS4K28 in cementing:

• Consistency batch-to-batch, location-to-location
• Broad effective density at any pressure
• Improved density reduction capacity – cement slurry density values below 9.0 lb/gal (1.1 kg/l) have been achieved.
• Low-density, high-strength 3M Glass Bubbles HGS Series are lighter and stronger and help achieve higher strength-to-weight cement designs.
• Light weight cement slurries made with 3M Glass Bubbles HGS series help prevent problems associated with fluid loss/lost circulation such as reduced top of cement (TOC) and thus the need for remedial squeeze. Additional benefits include the potential for:

1. Reduced Wait-On-Cement (WOC)
2. Reduced need for multi-staging

3M™ Glass Bubbles K15 effective densities at pressure

For worker protection, please follow your company’s procedures for safety and proper PPE, and consider the following:

• Select and use eye/face protection to prevent contact based on the results of an exposure assessment. Safety Glasses with side shields are recommended.
• Wear respiratory protection if ventilation is inadequate to prevent overexposure. An exposure assessment may be needed to decide if a respirator is required. If a respirator is needed, use respirators as part of a full respiratory protection program. Based on the results of the exposure assessment, select from the following respirator type(s) to reduce inhalation exposure: Half facepiece or full facepiece air-purifying respirator suitable for particulates. (For additional information about personal protective equipment, refer to the product Safety Data Sheet.)
• Provide local exhaust ventilation at transfer points. Use general dilution ventilation and/or local exhaust ventilation to control airborne exposures to below relevant Exposure Limits and/ or control dust. If ventilation is not adequate, use respiratory protection equipment.

Storage: Ideal storage conditions include unopened cartons in a dry and temperature-controlled warehouse.

Extended exposure of 3M™ Glass Bubbles HGS4K28 boxes to high humidity and/or conditions susceptible to condensation may result in some amount of “caking” of the 3M™ Glass Bubbles HGS4K28. To minimize the potential for caking and thereby maximize storage life, the following suggestions are offered:

• Carefully re-tie opened bags immediately after use. 
• If the polyethylene bag is punctured during shipping or handling, seal the hole as soon as possible or insert the contents into an undamaged bag.
• During hot and/or humid months, store boxes in the driest, coolest space available.

If controlled storage conditions are unavailable, carry a minimum inventory and process on a first in/ first out basis.
Handling: Due to the low weight and small particle size of 3M™ Glass Bubbles HGS4K28, dusting may occur while handling and processing. To minimize the dusting potential during handling,
consider the following: 

• Do not open 3M™ Glass Bubbles HGS4K28 packages until ready to use.
• Upon opening, have an air siphon near the opening to pull away airborne particles. (Dust collection equipment may be required – check local OSHA and other applicable regulations.)
• Remove 3M™ Glass Bubbles HGS4K28 with a suction “wand” (with slight positive pressure aeration) and transfer to a closed mixing tank inside fully contained piping. If a closed mixing tank is not available, use dust collection equipment as close as practical to the point of entry. Pneumatic conveyor systems have been used successfully to transport 3M™ Glass Bubbles HGS4K28 without dusting from shipping containers to batch mixing equipment. Equipment vendors should be consulted for recommendations.
• Static eliminators should be used to prevent static buildup.