Objectives/Scope: To identify cost-efficient re-fracturing methods in horizontal wells. We provide a case history of cost-efficient methods in the Eagle Ford, Permian, and Bakken by analyzing over 1000 re-fractured wells.
Methods, Procedures, Process: We have collected data on over 1000 re-fractured wells in our analysis. We incorporate the frac chemistry (slickwater vs gelled frac etc.) for each of the fracture treatments in this analysis. We have also analyzed the production improvements gained from the re-frac. We analyze the individual wells production prior to re-frac and the improved production after the re-frac.
Results, Observations, Conclusions: After standardizing as many variables as possible we have found that slickwater re-fracs with large amount of proppant have provided the highest production increase in terms of absolute production. Initial analysis shows slight differences between the three regions involved in this case study.
Novel/Additive Information: We are not aware of any other large scale public study done on this same topic. We hope that our case study based approach will provide a launching point for future work done on re-fracturing.