ISO 13503-3:2022
Petroleum and natural gas industries — Completion fluids and materials — Part 3: Testing of heavy brines
This document covers the physical properties, potential contaminants and test procedures for heavy brine fluids manufactured for use in oil and gas well drilling, completion, and workover fluids.
This document supplements API RP 13J, 5th edition (2014), the requirements of which are applicable with the exceptions specified in this document.
This document provides more suitable method descriptions for determining the formate brines pH, carbonate/bicarbonate concentrations and crystallization temperature at ambient pressure compared to the methods provided by API RP 13J, 5th edition (2014).
This document is intended for the use of manufacturers, service companies and end-users of heavy brines.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Supplements to API RP 13J, 5th edition (2014)
4.1 General
4.2 Method for determining iron content
4.3 Method for determining carbonate and bicarbonate concentrations
4.3.1 General
4.3.2 Determination of carbonate concentration by titration in the titration sample
4.3.3 Calculation of carbonate fraction in the titration sample
4.3.4 Calculation of bicarbonate concentration in the titration sample
4.3.5 Calculation of total carbonate and bicarbonate concentration
4.3.6 Calculation of carbonate and bicarbonate concentrations in the original sample (before pH adjustment)
4.4 Method for determining CT
4.4.1 General
4.4.2 Application and procedure
4.4.3 Preparation of seeding material
4.4.4 Selection of seeding material
4.4.5 Determination of approximate CT
4.4.6 Accurate determination of CT
4.5 Method for measuring pH of formate brines
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Supplements to API RP 13J, 5th edition (2014)
4.1 General
4.2 Method for determining iron content
4.3 Method for determining carbonate and bicarbonate concentrations
4.3.1 General
4.3.2 Determination of carbonate concentration by titration in the titration sample
4.3.3 Calculation of carbonate fraction in the titration sample
4.3.4 Calculation of bicarbonate concentration in the titration sample
4.3.5 Calculation of total carbonate and bicarbonate concentration
4.3.6 Calculation of carbonate and bicarbonate concentrations in the original sample (before pH adjustment)
4.4 Method for determining CT
4.4.1 General
4.4.2 Application and procedure
4.4.3 Preparation of seeding material
4.4.4 Selection of seeding material
4.4.5 Determination of approximate CT
4.4.6 Accurate determination of CT
4.5 Method for measuring pH of formate brines