The U.S. shale industry has long depended on its Tier 1 acreage — the most productive, lowest-cost drilling locations that provided the foundation for the shale boom. However, as operators systematically develop their best rock, concerns around Tier 1 exhaustion are intensifying. Understanding this exhaustion process is critical, not just for operators planning future drilling programs, but also for investors evaluating upstream companies’ long-term sustainability.
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