Phone: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Standards sales: prodaja@iss.rs Education: iss-edukacija@iss.rs Information about standards: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Main menu

ISO/NP 26857

Method for injection falloff testing in coalbed methane well

General information

10.20     Jun 18, 2026

ISO

ISO/TC 263

International Standard

Scope

This document specifies the technical requirements for injection/falloff testing in coalbed methane wells, covering test design, equipment configuration, operating procedures, data interpretation, and well test report preparation. It is applicable to testing during drilling or after completion of coalbed methane wells, with the aim of obtaining key reservoir parameters including permeability, formation pressure, skin factor, and radius of investigation.

Life cycle

NOW

PROJECT
ISO/NP 26857
10.20 New project ballot initiated
Jun 18, 2026