A method for measuring coalbed methane content in coal strata without the loss of the gas

Title:

A method for measuring coalbed methane content in coal strata without the loss of the gas

Creator:

Nazimko , Victor

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:39b976de-b30c-40b1-b4f8-201daa716c7f
uuid:39b976de-b30c-40b1-b4f8-201daa716c7f
doi:10.13168/AGG.2018.0028

Subject:

coal strata, coalbed methane, exploration, gas content, measurement, lost gas, and coal mine safety

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

This paper describes an invented method for direct measurement of coalbed methane content in situ. In contrast to known procedures, this method does not need to place a rock or drilling cuts into an airtight canister, and does not involve sealing of the hole. Moreover, the new method is monitoring methane content in situ continuously and synchronously during drilling the hole not losing any portion of the gas. These positive features are a sequel of new approach based on injection of known portion of neutral gas into the hole. Methane content was determined from concentration of the mixture ‘methane-neutral gas´ at the hole´s mouth. New method is applicable for commercial recovery application of coalbed methane and forecast of dangerous gas and coal bursts. FLAC3D computer simulation helped to investigate dynamics of methane outflow from the hole to account for the effect of drilling speed on the rate of gas emanation.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

Acta geodynamica et geomaterialia : | 2018 Volume:15 | Number:4 (192)

Harvested from:

CDK

Metadata only:

false