| Popis: |
Effective hydraulic fracturing has become a critical component in the successful development of most unconventional gas reservoirs, including the massive Haynesville Shale. The rig count in the Haynesville currently exceeds 130 active units and is expected to continue to climb. Many hundred horizontal wells have been drilled and completed, and several thousand stages have been hydraulically fractured. With this large and sometimes diverse cross section of wells, best practices have begun to emerge for various aspects of the stimulation design. This paper focuses on several areas of the completion and hydraulic fracture design in the Haynesville Shale that are identified as critical to the success of this play, including: The impact of lateral length, number of fracture stages and perf clusters The impact of effective fracture length The impact of fracture conductivity This paper will review production data from 56 wells completed in close proximity by a single operator to evaluate the impact of fracture design on initial production rates and sustained productivity after six and twelve months. These findings will be compared to reservoir simulator predictions, pressure transient testing, and production data analysis interpretations to evaluate the mechanisms constraining well production. Readers of this paper who are currently working in the Haynesville will be able to compare their current completion techniques to those presented in the paper. The authors hope this paper will promote a continued dialog on best completion practices among operators in this massive shale play. The findings in this paper may also be used by engineers as a guide for moving up the learning curve in other unconventional plays. |
