The article covers the issue of efficiency assessment of individual oil and gas businesses that use key performance indicators. The authors try to improve the efficiency assessment methodology on the basis of SPACE-method. The approach is relevant as it suggests the transition from qualitative efficiency indicators to quantitative ones. The integral estimate for the key performance indicators constitutes the so-called efficiency profile of an organization that has four functional areas, e.g. budgeting, investments, asset and corporate relation management, treasury. The article presents the results of testing the approach in one of the Russian oil and gas businesses. The proposed approach is innovative and valuable from the scientific and practical point of view, and can be introduced in all industries.