U.S. Oil Reserve Replacement Weakens Amid Efficiency Gains
Kimmeridge, an alternative asset manager focused on the energy sector, has published a new white paper titled 'Shale's Golden Years, Part II: The Cost of Aging'. The report examines the growing divergence between the outlook for U.S. oil and natural gas.
The study finds that despite significant efficiency gains, U.S. oil reserve replacement is continuing to weaken. In contrast, natural gas resources remain abundant. This divergence should increasingly shape capital allocation, with oil requiring rebuilding of exploration capabilities and gas moving further downstream to capture value beyond the wellhead.
Kimmeridge's analysis shows that while the industry has delivered on initial efficiency gains, underlying capital efficiency has continued to deteriorate. The three-year value-weighted recycle ratio fell from 184% in 2019 to 167% in 2025, despite higher revenue per barrel of oil equivalent (boe) and improvements to corporate costs and drilling efficiency.