The Dry Piney Project

The Dry Piney Helium and Carbon Sequestration Project is an integrated gas processing, helium recovery, and acid-gas sequestration development by Blue Spruce Operating in Sublette County, Wyoming, in the LaBarge area. Raw sour gas from nine Madison production wells, about 400 MMscf/d, is processed to recover helium and methane, leaving a concentrated CO₂ and hydrogen sulfide stream of roughly 92% CO₂ and 7% H₂S. That acid gas is compressed and piped about 10.5 miles to five Class II injection wells, where it is injected as a supercritical fluid into the Madison and Bighorn carbonate formations at depths of 14,800 to 16,500 feet. Supporting infrastructure includes the gathering system from the well pads, the central processing facility with on-site power generation, and the acid-gas pipeline corridor to the injection site. Over a 50-year injection life the project is modeled to store approximately 257.6 million tonnes of CO₂ (4.87 Tcf), with injection targeted just above the gas-water contact to sustain injectivity and reduce the number of wells required. Helium is the commercial driver, recovering a domestically scarce resource while permanently disposing of the CO₂ and H₂S that the sour gas stream would otherwise require operators to vent or reinject uneconomically. Development is advancing through FEED and permitting, with a Subpart RR monitoring plan under EPA review and Wyoming state cost-share support, making it as much a helium supply project as a carbon storage one.