Smörjmedel

 This part of ISO 13503 provides testing procedures for evaluating proppants used in hydraulic fracturing and gravel packing operations. NOTE Proppants mentioned henceforth in this part of ISO 13503 refer to sand, ceramic, resin-coated, gravel packing proppants, and other materials used for hydraulic fracturing and gravel packing operations. This document supplements API Std 19C, 2nd edition (2018), the requirements of which are applicable with the exceptions specified in this document. The objective of this part of ISO 13503 is to provide consistent methodology for testing performed on hydraulic fracturing and/or gravel packing proppants.