The first acid-proppant hydraulic fracturing was successfully carried out at Jufair-11 well in Sepehr and Jufair oilfields by Pezhvak Energy Engineering Services Company (PECO), a subsidiary of Pasargad Energy Development Company (PEDC).
The complex, multidisciplinary operation was followed by an integrated studies and planning initiated in 2025. The project was executed in collaboration with Petro Danial Kish (PDK) and Top Select Holdings, under the supervision of the project owners—Pasargad Exploration, Development, and Production Company and the Petroleum Engineering and Development Company—with effective support of Pasargad Energy Development Company as the project’s investor, according to the PEDC’s Public Relations Office.
The successful execution of the operation, which had not been previously implemented in Iran and has significant impacts on increasing production from low-permeability reservoirs, marks a milestone in strengthening the country’s engineering and operational capacities for oil and gas field development.
The achievement goes far beyond a few hours of final pumping; it reflects a fully integrated engineering, procurement, and operational program which began with complex, multidisciplinary studies in reservoir engineering, geomechanics, production engineering, well completion, well stimulation, and well integrity. Followed by diagnostic testing, finalization of engineering designs, procurement of specialized equipment and materials, and coordination among various teams, the operation at Jufair-11 well was successfully carried out.
The key operational metrics of the project included:
-The injection of approximately 1,900 barrels of operating fluid;
-Pumping at a flow rate of 20 barrels per minute;
-The execution of nine acid injection stages, each with a volume of 80 barrels, totaling 720 barrels;
-The placement and retention of approximately 15,770 pounds of proppant within the formation.
Post-operation pressure behavior, the clean-up process, fluid recovery rates, and well performance data are currently undergoing technical evaluation.