  We propose a methodology for modelling methane intensities of Oil and Gas
upstream activities for different production profiles with diverse combinations
of region of operation and production volumes associated. This methodology
leverages different data sources, including satellite measurements and public
estimates of methane emissions but also country-level oil and gas production
data and company reporting. The obtained methane intensity models are compared
to the reference companies' own reporting in order to better understand methane
emissions for different types of companies. The results show that regions of
operation within the different production profiles have a significant impact on
the value of modelled methane intensities, especially for operators located in
a single or few countries, such as national and medium-sized international
operators. This paper also shows that methane intensities reported by the
companies tend to be on average 16.1 times smaller than that obtained using the
methodology presented here, and cannot account for total methane emissions that
are estimated for upstream operations in the different regions observed.
