Case Histories: Benefits and Lessons Learned From New Single-Trip Perf Pac Gun Hanger System in Well Completions

摘要

During the last few years, advances in completions and sandcontrolrntechnology have enabled development of many highendrntechnologies that allow complex operations to bernconducted. During the life cycle of a well, one of the keyrnoperational goals is to maximize the well's net present valuern(NPV). Typically, the majority of the well completion budgetrnis allocated to the drilling phase. If, however, the drillingrncosts are not kept within planned budget and time parameters,rnit becomes necessary to reduce the time and cost in therncompletion strategies to enable the project to be completedrnwithin cost constraints.rnThis paper discusses a new single-trip perf-pack gunrnhanger (STPP-GH) system that reduces cycle times, and thus,rncosts. The STPP-GH completion system provides arncompletion in which perforating and frac-packing and/orrngravel packing for a zone of interest can be performed in arnsingle workstring trip. When using this system, the operatorrncan realize such benefits as reduced completion fluid losses,rnreduced formation exposure, and increased well-controlrnsafety. These advantages result from the reduction inrnoperational time when compared to traditional perforating andrngravel-pack operations.