Abstract
Routine (or basic or conventional) core analysis typically involves fluid saturation measurements and petrophysical measurements on dry plugs and samples at ambient or laboratory conditions. The data are principally used to characterise the reservoir properties and for log–core integration. This chapter provides details of sample preparation, test equipment, test procedures and data reporting requirements for the principal RCA tests: fluid saturations (retort and Dean–Stark); helium porosity; and steady-state and unsteady-state nitrogen/helium permeability measurements. Darcy's law is derived for steady-state gas flow, and corrections for non-Darcy flow (Klinkenberg corrections and Forchheimer's effect) are described. The chapter also includes details of recommended best practice for single-phase liquid permeability, high-resolution probe permeability, and basic porosity and permeability measurements on whole core samples. The advantages and drawbacks/issues associated with each test are described, and quality control checks and diagnostics are summarised.
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