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Maurer Engineering, Inc. Light Weight Solid Additives (LWSA) Microscope Photograph of Hollow Glass Spheres - LWSA BENEFITS OF LWSA/HGS (Minimizes Formation Damage) Formation Grains Mud Particles Mud Filtrate Fluid Formation Grains M ud Flow M ud Flow (Annulus) Drill Pipe Hollow Spheres Mud System With LWSA/HGS Formation Grains Hollow Spheres Oil Flow Improved Clean-up With LWSA/HGS Drill Pipe Mu d Fl ow Mu d Fl ow An nulus Without LWSA/HGS (Conventional Damage Mechanism) With HGS - Up to 100% Permeability Recovery Descriptor