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ISO/NP TS 26653

Natural gas upstream area — Core sampling — Tripping-out pressure-retained coring method

General information

Current stage: 10.20 Effective date: Mar 5, 2026

Originator: ISO

Owner: ISO/TC 193/SC 3

Type: Technical Specification

Scope

This document specifies the principle, equipment and facilities, materials and tools, coring procedures, collection and recording of samples and related data, and safety requirements for the tripping-out pressure-retained coring method for gas wells.
This document is applicable to the tripping-out pressure-retained coring operations for gas wells.

Life cycle

NOW

IN_DEVELOPMENT
ISO/NP TS 26653
10.20 New project ballot initiated
Mar 5, 2026