Unlocking tight contingent CSG resources: Application of graded particle injection in CSG stimulation

Abstract

Over the last decade, laboratory research and modelling have shown the benefits of the application of GPI to keep pre-existing natural fractures and induced fractures open during production. The purpose of this talk is to summarise key findings of the NERA Project “Converting tight contingent CSG resources: Application of graded particle injection in CSG stimulation”.  Recent laboratory studies have provided insights on the potential mechanisms and key factors, including proppant size and optimum concentration, that contributing to the success of a micro-proppant placement.  Accompanying numerical modelling studies will be presented that describe the likely fluidized behaviour of micro-proppants (e.g., straining models, DLVO effects, and screen out prediction) as well as the potential benefit under varying conditions (e.g., vertical well, horizontal well mult-stage, indirect, etc.) This talk will outline the necessary fluid, treatment design considerations, and numerical modelling design inputs necessary to achieve practical results relative to this study.  

Biography

Prof Raymond Johnson Jr. is currently Professor of Well Engineering and Energi Simulation Co-chair in the University of Queensland, Centre for Natural Gas. Prof Johnson’s 41 years of petroleum engineering and management experience has focused on integrating elements of reservoir engineering, geomechanics and hydraulic fracturing to improving appraisal and development strategies for unconventional resources such as gas from coal as well as oil and gas from shales and naturally fractured reservoirs.

Prof Johnson is a Life Member of the Society of Petroleum Engineers (SPE), past Queensland SPE Section chair, twice co-Chair of the SPE Unconventional Reservoir Conference Asia Pacific, 2019 co-Chair and 2021 Advisor of the URTeC Asia Pacific Conference, and twice SPE Regional Technical Award Recipient (Production Operations 2011 and Management and Information 2017).  Prof Johnson has recently been admitted and recognised as a Fellow in Engineers Australia.