Using 3d Printed Synthetic Rock for Systematic Evaluation of Mechanical Properties in Coal

Deisman, Nathan; Flöttmann, Thomas; Guo, Yujia; Hodder, Kevin; Chalaturnyk, Richard J.; Leonardi, Christopher

doi:10.15530/ap-urtec-2019-198255

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…The ability to complete experimental programs using 3D-printed sandstones with 2 of 15 similar physical and chemical properties to their natural counterpart is an unprecedented achievement that integrates controlled heterogeneity into geomechanical testing [4,9,10]. However, most of the studies conducted using 3D-printed sandstone analogues relied on specimens manufactured with standard printing parameters prescribed by the printer manufacturer [9,[11][12][13][14][15][16][17]. A drawback of using standard parameters or default settings is that the initial properties of 3D-printed sandstones do not match the geomechanical and transport properties that are observed in reservoir sandstone.…”

Section: Introductionmentioning

confidence: 99%

Increasing Density of 3D-Printed Sandstone through Compaction

et al. 2022

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The geomechanical and transport properties of rocks are of great importance to geoscience and engineering, as these properties provide responses to external stresses and flow regimes in the subsurface. Typically, experiments conducted on cores from reservoir formations have a degree of uncertainty, due to the heterogeneous characteristics of rock samples. To combat this uncertainty, binder-jet additive manufacturing (3D printing) is an emerging technology to characterize natural porous media in a repeatable fashion. In this study, the 3D printing sandstone analogue involved sand powder and organic binder to mimic silica grains and cement in natural sandstone. The use of compaction rollers and the adjustment of printing parameters allowed one to test how the porosity and strength of 3D-printed samples can replicate the transport and geomechanical properties of natural sandstone. The densities of samples were increased by ~15% and compressive strength by ~65% with the use of the larger roller. This is a promising alternative to experimental testing to calibrate numerical models in geoscience and engineering. The significance of this approach is to allow for customizable porosity, permeability, and strength in rock samples, while preserving scarce natural rock samples.

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Section: Introductionmentioning

confidence: 99%

Increasing Density of 3D-Printed Sandstone through Compaction

et al. 2022

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Experimental investigation of the flow properties of layered coal-rock analogues

Santiago

Zabala

Sanchez-Barra

et al. 2022

Chemical Engineering Research and Design

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Implications of Recent Research into the Application of Graded Particles or Micro-Proppants for Coal Seam Gas and Shale Hydraulic Fracturing

Johnson

Ramanandraibe

Vaira

et al. 2022

SPE Asia Pacific Oil &Amp; Gas Conference and Exhibition

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Low permeability, naturally fractured reservoirs such as coal seam gas (CSG, coalbed methane or CBM) and shale gas reservoirs generally require well stimulation to achieve economic production rates. Coupling hydraulic fracturing and micro-proppant or graded particle injections (GPI) can be a means to maximise hydrocarbon recovery from these tight, naturally fractured reservoirs, by maintaining or improving cleat or natural fracture conductivity. This paper presents a summary of the National Energy Resources Australia (NERA) project "Converting tight contingent CSG resources: Application of graded particle injection in CSG stimulation" - which assessed the application of micro-proppants, providing guidance on key considerations for GPI application to CSG reservoirs. 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 of coal reservoirs with pressure dependent permeability (PDP). Laboratory studies, within this study, provide further insight on potential mechanisms and key factors, including proppant size and optimum concentration, which contribute 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, electrostatic effects, and ‘screen out’ prediction). This paper outlines the necessary reservoir characterization, treatment considerations, and key numerical modelling inputs necessary for the design, execution, and evaluation of GPI treatments, whether performed standalone or in conjunction with hydraulic fracturing treatments. It also provides insight on the practical application of GPI efficiently into fracturing operations, minimizing natural and hydraulic fracturing damage effects, thereby maximizing potential production enhancement for coals, shales and other tight, naturally fractured reservoirs exhibiting pressure-dependent permeability effects.

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Using 3d Printed Synthetic Rock for Systematic Evaluation of Mechanical Properties in Coal

Cited by 3 publications

References 15 publications

Increasing Density of 3D-Printed Sandstone through Compaction

Increasing Density of 3D-Printed Sandstone through Compaction

Experimental investigation of the flow properties of layered coal-rock analogues

Implications of Recent Research into the Application of Graded Particles or Micro-Proppants for Coal Seam Gas and Shale Hydraulic Fracturing

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