API 19C : 2008 : R2016

Special Notes
API Foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Abbreviations
4 Standard proppant sampling procedure
   4.1 General
   4.2 Particle segregation
   4.3 Equipment
   4.4 Number of required samples - Bulk
   4.5 Sampling - Bulk material
   4.6 Sampling - Bagged material
5 Sample handling and storage
   5.1 Sample reduction
   5.2 Sample splitting
   5.3 Sample and record retention and storage
6 Sieve analysis
   6.1 Purpose
   6.2 Description
   6.3 Equipment and materials
   6.4 Procedure
   6.5 Calculation of the mean diameter, median diameter and
        standard deviation
   6.6 Sieve calibration
7 Proppant sphericity and roundness
   7.1 Purpose
   7.2 Description
   7.3 Apparatus capability
   7.4 Procedure
   7.5 Alternate method for determining average sphericity
        and roundness
8 Acid solubility
   8.1 Purpose
   8.2 Description
   8.3 Equipment and materials
   8.4 Procedure
9 Turbidity test
   9.1 Purpose
   9.2 Description
   9.3 Equipment and materials
   9.4 Equipment calibration
   9.5 Procedure
10 Procedures for determining proppant bulk density, apparent
   density and absolute density
   10.1 Purpose
   10.2 Description
   10.3 Bulk density
   10.4 Apparent density
   10.5 Absolute density
11 Proppant crush-resistance test
   11.1 Purpose
   11.2 Description
   11.3 Equipment and materials
   11.4 Sample preparation
   11.5 Crush-resistance procedure
12 Loss on ignition of resin-coated proppant
   12.1 Objective
   12.2 Apparatus and materials
   12.3 Loss-on-ignition procedure for whole-grain proppant
Annex A (informative) - Formazin solution preparation
Bibliography

Describes standard testing procedures for evaluating proppants used in hydraulic fracturing and gravel-packing operations.