API - SPEC 13A
Drilling Fluids Materials
Organization: | API |
Publication Date: | 1 October 2019 |
Status: | active |
Page Count: | 123 |
scope:
This specification covers physical properties and test procedures for materials manufactured for use in oil- and gas-well drilling fluids. The materials covered are barite; hematite; bentonite; non-treated bentonite; OCMA-grade bentonite; attapulgite; sepiolite; technical grade, low-viscosity carboxymethyl cellulose (CMC-LVT); technical grade, high-viscosity carboxymethyl cellulose (CMC-HVT); starch; low-viscosity polyanionic cellulose (PAC-LV); high-viscosity polyanionic cellulose (PAC-HV); and drilling-grade xanthan gum. This specification is intended for the use of manufacturers, distributors, and end users of named products. Annex A (informative) on the API Monogram Program is now purposely blank; refer to Annex A of API Specification Q1.