American Petroleum Institute
Purchasing Guidelines Handbook
API ® Monogram ® Equipment
API Specification 13A 18th Edition, August 2010
Specification for Drilling Fluids – Specifications and Testing

Specification for Drilling Fluids – Specifications and Testing

Table of Contents
1.0 General
1.1Evaluation Base Clay
1.2 Calibration Barite
1.3 Test Calibration Bentonite
1.4 Documentation Requirements
1.5 Shipping Requirements
1.6 Marking Requirements
1.7 Storage Requirements
2.0 Product
2.1 Attapulgite
2.2 Barite
2.3 Bentonite
2.4 Non-Treated Bentonite
2.5 Haematite
2.6 High-Viscosity CMC (CMC-HVT)
2.7 Low-Viscosity CMC (CMC-LVT)
2.8 High-Viscosity Polyanionic Cellulose (PAC-HV)
2.9 Low-Viscosity Polyanionic Cellulose (PAC-LV)
2.10 Sepiolite
2.11 Starch
2.12 Xanthan Gum