QEMSCAN 10 is a good compromise of speed, coverage area, and resolved detail that is suitable for both mineralogical and textural studies. As an alternative to optical petrography, QEMSCAN 10 is a standardised and reproducible process that can be applied uniformly to large sample sets in a timely manner at lower cost.
|QEMSCAN 10 Key features|
|Scan area||10 x 10 mm|
|Scan resolution||10 μm|
|Mineralogy data points||1 million|
|Standard deliverables||Modal mineralogy
Mineral maps and Porosity of rock
|Minimum project size||6 samples|
The QEMSCAN 10 service is ideal for mineralogy and textural studies of medium to coarse grained material. 10 μm is the preferred resolution for grain size and pore size studies as it resolves key features while also enabling the study of a large enough area to get solid statistics even in heterogeneous and poorly sorted material.
The enhanced resolution of QEMSCAN 10 over QEMSCAN 50 enables the extraction of more precise textural information, like grain and pore size distribution. These are available as a series of service add-ons:
|Pore/grain size distribution||Grain size histograms and data tables for mineral phases of interest or pore space. Grouped by depth, lithotype or individual cuttings.|
|Cuttings lithotyping||Determination of up to 5 lithotypes per sample and reporting of agreed rock properties per lithotype.|
|Cuttings porosity||QEMSCAN measured and calculated per sample, lithotype or individual cuttings, as agreed.|
|Individual cuttings reporting||Quantification of agreed rock properties per individual cutting in a sample.|
|Heavy mineral grain counts||Additional reporting of heavy mineral data in grain count rather than area percent format. May include digital grain size sieving.|
|Coal quantification||Manual editing of low BSE phases (coal, organic material) that occur as large particles (not nanometer organic matter quantification).|
A development team needs to understand the porosity and mineralogy in the reservoir unit of a given well because the flow rates do not match log readings and previous core studies from an adjacent well. There is no core from this well, so we design a QEMSCAN project using cuttings. We agree to scan 30 samples from the reservoir unit at 10 μm to better understand the porosity and look for clues to the flow rate mystery.
|Cuttings lithotyping add-on||30|
|Cuttings porosity add-on||30|
|Pore-size distribution add-on||30|
|Project management days||1|
For technical details see the QEMSCAN Technology page.