Page 6 - AIF - English

GLOSSARY OF TERMS AND ABBREVIATIONS

Upgrading is the two-stage process by which bitumen or reduces the sulphur and nitrogen of, primary

heavy crude oil is converted into SCO.
upgrading output to create sweet SCO and diesel.

Primary upgrading, also referred to as coking or Upstream refers to the exploration, development and

thermal cracking, heats the bitumen in coke drums to production of conventional crude oil, bitumen or
remove excess carbon. The superheated hydrocarbon natural gas.

vapours are sent to fractionators where they condense
into naphtha, kerosene and gas oil. Carbon residue, or Reserves and resources

coke, is removed from the coke drums on short Please refer to the Definitions for Reserves Data Tables
intervals and later sold as a byproduct.
section of the Statement of Reserves Data and Other Oil

and Gas Information in this AIF.
Secondary upgrading, a purification process also
referred to as hydrotreating, adds hydrogen to, and

4 SUNCOR ENERGY INC. ANNUAL INFORMATION FORM 2014