In shale gas horizontal wells with multiple intervals completed, the predominant completions method has been multistage fracturing while plugging with drillable bridge plugs and jet perforating the cemented casing. Typically the bridge plugs are drilled out under pressure with coiled tubing. The ability to optimize drilling/milling parameters while drilling out with pressurized coiled tubing has been hampered by the lack of information in the coiled tubing cab about the speed that debris is generated, the size of debris generated, and whether the circulation fluid properties and rate are sufficient to remove the debris from the hole. In response to dealing with challenges of drilling out bridge plugs and performing other pressurized intervention work in long horizontals, a new surface debris management system was developed and successfully tested. Using the new system, a clearer picture emerges regarding the conditions being created down hole. This system has aided in optimizing drilling and circulating parameters and has resulted in faster bridge plug drill outs, cleaner casing and fewer drilling and intervention problems.