Standards Development

Scope

This documents specifies the method for determination of particles content in natural gas by weighting method, with measurement range of 0.01 mg/m3 to 100 mg/m3 under measurement pressure from 0.1 Mpa to 12 Mpa.

Purpose

Particulate matter in natural gas is an important indicator of natural gas quality. The existence of particulate matter will affect the safety of natural gas pipeline transmission, which is not conducive to the normal and stable operation of the device. In serious cases, it may also lead to the failure and damage of the device (such as compressor). In 2011, the University of Shizuoka in Japan reported a case of particulate matter accumulation in a 1400 km long natural gas pipeline; From 2016 to 2019, about 50% of the maintenance and repair tasks of a gas transmission station in China were related to particulate matter; In 2021, the Egyptian Oil Company reported a case where black particles accumulated in a natural gas pipeline and nearly blocked the pipeline. At home and abroad, there is a great demand for standard methods for the determination of particulates in natural gas (especially unconventional natural gas coalbed methane). In the international trade of natural gas, there are usually requirements for the determination of particulates in natural gas. However, there is no corresponding measurement method standard in the world at present, which is not conducive to the safety, quality control and international trade handover of natural gas pipeline transportation. Therefore, it is necessary to establish an international standard for the determination of particulate matter in natural gas.

This time, we first applied for the formulation of "Natural gas - Determination of particulate matter - Part 1:Determination of Particles content by gravimetric method". In the next step, we will continue to carry out the research on international standards for the determination of particle size and composition by optical methods.