Improving Reliability of Multi-Zone Fracturing Treatments While Optimising Efficiency

As conventional wells become scarce, unconventional wells have become a leading focus of the industry. Multi-zone hydraulic fracturing is an unconventional method of gaining access to tight, hydrocarbon-bearing shale basins. This alternative method has become highly effective and necessary as the demands increase to satisfy the energy needs of a developing world. Current technology has enabled these multi-zone fracturing systems to offer over 40 zones. This technology requires the use of a ball-seat system that utilizes one tripping ball per zone to actuate a sleeve, and expose ports to deliver the fracturing treatment. Each zone can require up to an hour of pumping for delivery of fracture treatments. Advancements in technology have led to the development of high-strength corrodible materials (HSCM), and its incorporation within a high-impacting telescoping port (HITP). The high-impacting telescoping port eliminates the need to actuate the sleeve to expose ports when delivering the fracture treatment. The HITP makes contact with the formation at 3,000 psi before delivering the fracture treatment. This new technology enables one tripping ball to fracture up to five zones at the same time, while the HITP ensures efficient delivery of the fracture treatment to the formation. This paper will explore the development and reliability of this new technology.