Nine Energy Service partnered with Casto Petroleum Engineering (CPE) to conduct a thorough analysis of 114 horizontal Eagle Ford Shale wells, which underwent re-fracturing (refrac) using Nine’s advanced cemented liner technology. These wells were completed using multi-stage hydraulic fracturing and were produced for an average of 8 years. Each well had a casing liner installed and cemented in place. New perforations were made within the liner to facilitate the refrac process and these wells were stimulated using modern completion techniques and brought back into production.

Nine and CPE estimated the amount of oil each well would recover during three different stages of its production history: before the refrac EUR, the pre- and post-refrac EUR, and the incremental refrac EUR resulting from the refrac using Nine’s technology. For a standard lateral length of 5,000 feet, this translated to an average original EUR of 250,000 barrels of oil, a pre- and post-refrac EUR of 400,000 barrels, and an incremental EUR of 150,000 barrels of oil from the refrac.

The economic assessment, considering factors like capital and operating expenses, showed promising returns. To learn more about the details of the positive results of using Nine’s liner technology, download the study here.


Nine Energy Service is an oilfield services company that offers completion solutions within North America and abroad. The Company brings years of experience with a deep commitment to serving clients with smarter, customized solutions and world-class resources that drive efficiencies. Serving the global oil and gas industry, Nine continues to differentiate itself through superior service quality, wellsite execution and cutting-edge technology. Nine is headquartered in Houston, Texas with operating facilities in the Permian, Eagle Ford, SCOOP/STACK, Niobrara, Barnett, Bakken, Marcellus, Utica and Canada.