Effect of Lamination on Shale Reservoir Properties: Case Study of the Montney Formation, Canada

The presence of lamination on sedimentary rocks is a distinct characteristic, particularly in shales. They are due to the contrast between successive layers with regard grain size, composition, color, and structures, such as graded beds. Typically, degree controlled by sedimentation rate flow regime. Herein, we developed mudstone classification scheme terms because lamination-based shale facies related differing features mineral porosity, Young’s modulus. This study also attempts verify whether wireline log patterns relevant lithofacies. relationship porosity Montney Formation can be used estimate reservoir properties. Our results show that an increased silt lamina leads increase quartz calcite contents decrease clay content, which increases permeability, However, quality not solely dependent complex interaction components. affected neutron, density, sonic responses. Furthermore, tends neutron percentage, similar trends density box plots area. When percentage or cement material decreases, responses diminish. Meanwhile, when rock texture variation lamination, response decreases.