Author Identifier

Faisal Ur Rahman Awan

Orcid :

Alireza Keshavarz

Orcid :

Hamed Akhondzadeh

Orcid :

Sarmad Al-Anssari

Orcid :

Ahmed Al-Yaseri

Orcid :

Ataollah Nosrati

Orcid :

Muhammad Ali

Orcid :

Stefan Iglauer

Orcid :

Document Type

Journal Article

Publication Title

Energy and Fuels


ACS Publications


School of Engineering




Edith Cowan University - Open Access Support Scheme 2020


Awan, F. U. R., Keshavarz, A., Akhondzadeh, H., Al-Anssari, S. F., Al-Yaseri, A. Z., Nosrati, A., ... & Iglauer, S. (2020). Stable Dispersion of Coal Fines During Hydraulic Fracturing Flowback in Coal Seam Gas Reservoirs–An Experimental Study. Energy & Fuels, 34(5), 5566-5577.


In subterranean coal seam gas (CSG) reservoirs, massive amounts of small-sized coal fines are released during the production and development stages, especially during hydraulic fracturing stimulation. These coal fines inevitably cause mechanical pump failure and permeability damage due to aggregation and subsequent pore-throat blockage. This aggregation behavior is thus of key importance in CSG production and needs to be minimized. Consequently, such coal fines dispersions need to be stabilized, which can be achieved by the formulation of improved fracturing fluids. Here, we thus systematically investigated the effectiveness of two additives (ethanol, 0.5 wt % and SDBS, 0.001 and 0.01 wt %) on dispersion stability for a wide range of conditions (pH 6–11; salinity of 0.1–0.6 M NaCl brine). Technically, the coal suspension flowed through a glass bead proppant pack, and fines retention was measured. We found that even trace amounts of sodium dodecyl benzene sulfonate (SDBS) (i.e., 0.001 wt %) drastically improved dispersion stability and reduced fines retention. The retention was further quantified by fractal dimensional analysis, which showed lower values for suspensions containing SDBS. This research advances current CSG applications and thus contributes to improved energy security.



Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Included in

Engineering Commons