Special core analysis

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In the petroleum industry, special core analysis, often abbreviated SCAL or SPCAN, is a laboratory procedure[1] for conducting flow experiments on core plugs taken from a petroleum reservoir. Special core analysis is distinguished from "routine (RCAL) or conventional (CCAL) core analysis" by adding more experiments, in particular including measurements of two-phase flow properties, determining relative permeability, capillary pressure, wettability, and electrical properties. Due to the time-consuming and costly character of SCAL measurements, routine core analysis (RCAL) data should be inspected thoroughly to select a representative subset of samples for SCAL.[2][3]


  1. ^ "Oilfield Glossary: Term 'special core analysis (SCAL)'". www.glossary.oilfield.slb.com. Archived from the original on 2006-03-22.
  2. ^ Mirzaei-Paiaman, Abouzar; Asadolahpour, Seyed Reza; Saboorian-Jooybari, Hadi; Chen, Zhangxin; Ostadhassan, Mehdi (2020). "A new framework for selection of representative samples for special core analysis". Petroleum Research. 5 (3): 210–226. doi:10.1016/j.ptlrs.2020.06.003.
  3. ^ Mirzaei-Paiaman, Abouzar; Saboorian-Jooybari, Hadi (2016). "A method based on spontaneous imbibition for characterization of pore structure: Application in pre-SCAL sample selection and rock typing". Journal of Natural Gas Science and Engineering. 35: 814–825. doi:10.1016/j.jngse.2016.09.023.