Dissolvable Plug and Perf System Eliminates Millouts in Multistage Stimulations | Schlumberger
Industry Article
Location
Eagle Ford Shale, United States, North America, Onshore
Byline
Isaac Aviles, SPE, Michael Dardin, SPE, and Gregoire Jacob, SPE, Schlumberger
Publication
Journal of Petroleum Technology
Publication Date
6/1/2015
Products Used

Dissolvable Plug and Perf System Eliminates Millouts in Multistage Stimulations

 

Of all the technologies that have propelled the unconventional boom in the United States over the past 15 years, plug and perf (P&P) remains the number one method for stimulating multistage wells, enabling operators to achieve significant economic gains in previously inaccessible reservoirs.

The Infinity dissolvable plug-and-perf system operates in the same fashion as a conventional P&P, but uses fully dissolving seats, instead of plugs, for isolation. The system was designed for use in cemented, uncemented, vertical, deviated, and horizontal wells in shale, sandstone, carbonate, and other rock types. The seat assemblies serve the purpose of plugs and dissolve in a controlled manner after the stimulation has been performed, leaving a full-bore inner diameter.

The dissolvable P&P system has been deployed in most of the major unconventional plays in North America. During the early stages of the system validation, Schlumberger collaborated with several operators in the Eagle Ford Shale in Texas. Because this play presents high-pressure/high-temperature challenges at bottomhole conditions, it was well suited for testing the limits of the technology.

Dissolvable Plug and Perf System Eliminates Mill-Outs in Multistage Stimulations

The dissolvable seat system offers expanded opportunities for P&P completions, replacing the conventional plug isolation. The technology also can operate in conjunction with other stimulation methods in a single well, integrating with openhole ball drop systems to stimulate additional stages in the heel, or with conventional P&P to stimulate stages in the toe and heel.

Optimizing recovery and reducing cost and risk remain key objectives in the unconventional market. The Infinity dissolvable plug-and-perf technology expands the capabilities of multistage stimulation, thus eliminating the need for mechanical intervention and optimizing production in cemented and uncemented wellbores.

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