Halliburton Seals the Deal on Carbon Capture

Halliburton's XTR CS valve ditches hydraulics and elastomers to solve CO₂ injection wells' biggest reliability headache

6 May 2026

Halliburton launched the XTR CS injection system in February 2026, targeting a persistent reliability problem in carbon capture wells: safety valves that degrade under the extreme cold and chemical aggression of supercritical CO₂, creating leak risk at the depths where containment is most critical.

The tool is a wireline-retrievable safety valve with no elastomeric seals or hydraulic control lines, the components most likely to fail in carbon capture, utilisation, and storage environments. Removing hydraulic actuation eliminates a principal source of leakage and simplifies operations for deep injection wells. The valve performs consistently at any setting depth, reducing planning complexity and inventory requirements across multi-well programmes.

Operators can deploy the device as a primary safety valve, a contingency backup, or a deep-set flowback prevention tool, all within a single retrievable string. A built-in anti-throttle feature diverts high-velocity CO₂ away from sealing surfaces, limiting wear in continuous-injection conditions.

"Inject CO₂ efficiently and safely," said Maxime Coffin, Vice President of Halliburton Completion Tools, describing the system's purpose and the company's position in low-carbon completion technology.

Demand for reliable completion hardware has grown alongside US investment in CO₂-linked enhanced oil recovery, spurred by expanded 45Q tax credits, federal incentives tied to carbon storage volumes. In the Permian Basin and along the Gulf Coast, where CO₂ injection networks are most developed, hardware failures can determine whether a project is commercially viable.

Broader constraints remain. CO₂ sourcing, pipeline capacity, and permitting delays continue to limit the sector's growth, and smaller operators face capital barriers to qualifying new systems across large well inventories. The XTR CS addresses one engineering challenge within a wider set of commercial and regulatory hurdles that still face the industry.