scope:

Foreword

a. This recommended practice is under the jurisdiction of the API Committee on Standardization o( Drilling Fluid Materials.

b. The purpose of this recommended practice is to provide standard procedures for the testing of drilling fluids. It is not a detailed manual on mud control procedures. It should be remembered that the agitation history and temperature of testing have a Profound effect on mud properties.

c. Metric equivalents ha\'e been included in this publication in parentheses following the U. S. customary units.

d. Another publication under jurisdiction of this committee:

SPEC 13A: Specification (or Oil-Well Drilling Fluid Materials, CO\'ers specifications and test procedures {or barite, bentonite; and attapulgite clay.