- Zhongyuan Oilfield, the Petroleum Exploration and Development Research Institute and Southwest Petroleum University led the Puguang Gas Field pilot.
- The pilot uses CO2 injection for CCUS-EGR in a high-sulfur gas reservoir with a two-year injection cycle.
- Team ran over 300 simulation tests, collected tens of thousands of data points, and developed multi-component, multi-field coupled numerical simulation models.
- Field verification included wellbore tubing checks; industrial application targets about a 9 percentage-point increase in recovery and expanded CO2 storage.
Facility launch
On April 2 the first CCUS-EGR pilot test facility for a high-sulfur gas field in China started operations at the 106 gas gathering station in Zhongyuan Oilfield's Puguang Gas Field.
Consortium and modelling
Zhongyuan Oilfield, the Petroleum Exploration and Development Research Institute and Southwest Petroleum University ran over 300 simulation tests, gathered tens of thousands of data points and developed multi-component, multi-field coupled numerical simulation models to support optimized injection–production plans for high-sulfur reservoirs.
Pilot design and targets
The field pilot uses CO2 injection on a two-year injection cycle; industrial application is expected to increase reservoir recovery by about nine percentage points and expand CO2 storage capacity.
Field validation
On-site work included comprehensive evaluation and testing of wellbore tubing to validate the system for initial operation.
