5Rytlewski G, Lima J, Dolan B. Novel technology re- places perforating and improves efficiency during multi- ple layer fracturing operations [ R ] . SPE 107730. 2007.
6Rytlewski G L, Cook J M. A study of fracture initiation pressures in cemented cased-hole wells without perfora- tions [R] . SPE 100572, 2007.