SX-PLUS® provides a thermally stable fluid loss additive for high or low temperature wells. Based on extensive lab tests and field applications, it is known that a specific particle size will seal the face of porous sands and other formations helping reduce the differential pressure transfer. SX-PLUS ® graphitic particles with a PSD ranging from 40 mesh to >200 mesh (425 to >75 microns) are classified in that specific size range to effectively reduce fluid loss. SX-PLUS® has a very high melting point unlike resins or gilsonite based products. This carbon-based material has been treated at temperatures over 600°F (315°C) providing excellent thermal stability down hole.