本标准提供了评估水力压裂和砾石充填作业中使用的支撑剂的推荐试验程序。注:本文件下文提及的支撑剂是指用于水力压裂和砾石填充作业的天然砂、陶瓷介质、树脂涂层支撑剂、砾石填充介质和其他材料。本文件旨在为用于测量水力压裂和/或砾石充填支撑剂性能的测试程序提供一致的方法。本文件中的测试程序不是为了提供井下储层条件下的支撑剂电导率值而设计的。 长期测试数据表明，时间、温度升高、压裂液残留物、循环应力载荷、埋置、地层细粒和其他因素进一步降低了压裂支撑剂充填体的导电性。此外，该参考试验旨在仅测量与包装内层流相对应的摩擦能量损失。人们认识到，实际裂缝内的流体速度可能显著高于这些实验室测试中的速度，并且可能受惯性效应的影响。

This standard provides recommended testing procedures for evaluating proppants used in hydraulic fracturing and gravel-packing operations.NOTE The proppants mentioned henceforth in this document refer to natural sand, ceramic media, resin-coated proppants, gravel packing media, and other materials used for hydraulic fracturing and gravel-packing operations.The objective of the document is to provide consistent methodology for testing procedures used to measure performance of hydraulic-fracturing and/or gravel-packing proppants. The testing procedures in this document are not designed to provide values of proppant conductivity under downhole reservoir conditions. Long-term test data have shown that time, elevated temperatures, fracturing fluid residues, cyclic stress loading, embedment, formation fines and other factors further reduce fracture proppant pack conductivity. Also, this reference test is designed to measure only the frictional energy losses corresponding to laminar flow within a pack. It is recognized that fluid velocity within an actual fracture can be significantlyhigher than in these laboratory tests, and can be dominated by inertial effects.