SY/T 5091-1993
Sulfonated tannin extract for drilling fluid (English Version)

Standard No.

SY/T 5091-1993

Language

Chinese, Available in English version

Release Date

1993

Published By

Professional Standard - Petroleum

Status

Be replaced 2023-05

Replace By

SY/T 5091-2022

Latest

SY/T 5091-2022

Scope

This standard specifies the technical requirements, test methods, acceptance rules, marking and packaging of sulfonated tannins for drilling fluids. This standard applies to sulfonated tannins, code-named SMK, as a high-temperature resistant viscosity reducer for water-based drilling fluids.

SY/T 5091-1993 history

• 2022 SY/T 5091-2022 Sulfonated tannins as viscosity reducer for drilling fluids
• 1993 SY/T 5091-1993 Sulfonated tannin extract for drilling fluid