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Energies 2019, 12(2), 220; https://doi.org/10.3390/en12020220

Hydraulic Fracture Design with a Proxy Model for Unconventional Shale Gas Reservoir with Considering Feasibility Study

Department of Energy System Engineering, Seoul National University, Seoul 08826, Korea
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Received: 30 November 2018 / Revised: 29 December 2018 / Accepted: 7 January 2019 / Published: 11 January 2019
(This article belongs to the Section Energy Sources)
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Abstract

Shale gas is a natural gas trapped in shale formation and is being actively developed in North America. Due to the low permeability of a shale gas reservoir in the range from 10−8 to 10−6 Darcy, horizontal drilling and multi-stage hydraulic fracturing are needed for its development. This paper presents a fast and reliable proxy model to forecast shale gas productions and an optimum hydraulic fracturing design for its development. The proxy model uses a robust regression scheme and can replace a commercial reservoir simulator. The proxy model proposed can determine the influence of impact factors on the production at each production time. The calculation speed of the proposed proxy model is about 1.4 million times faster than that of a reservoir simulator compared. The most economical hydraulic fracture design using the proxy model has a length of 168 m at each stage, which is determined by examining a large number of hydraulic fracturing designs considering economic feasibility. View Full-Text
Keywords: hydraulic fracture design; unconventional shale gas; proxy model; production optimization hydraulic fracture design; unconventional shale gas; proxy model; production optimization
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Kim, K.; Choe, J. Hydraulic Fracture Design with a Proxy Model for Unconventional Shale Gas Reservoir with Considering Feasibility Study. Energies 2019, 12, 220.

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