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Research Papers: Petroleum Engineering

Production Performance Evaluation of Multifractured Horizontal Wells in Shale Oil Reservoirs: An Analytical Method

[+] Author and Article Information
Xingbang Meng

Department of Petroleum Engineering,
China University of Petroleum (East China),
Qingdao 266580, China
e-mail: mengxingbang@upc.edu.cn

Jiexiang Wang

Department of Petroleum Engineering,
China University of Petroleum (East China),
Qingdao 266580, China
e-mail: 20170049@upc.edu.cn

1Corresponding author.

Contributed by the Petroleum Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received March 3, 2019; final manuscript received May 5, 2019; published online May 28, 2019. Assoc. Editor: Gensheng Li.

J. Energy Resour. Technol 141(10), 102907 (May 28, 2019) (6 pages) Paper No: JERT-19-1116; doi: 10.1115/1.4043747 History: Received March 03, 2019; Accepted May 07, 2019

Hydraulic fracturing stimulation has become a routine for the development of shale oil and gas reservoirs, which creates large volumes of fracturing networks by helping the hydrocarbon to transport quickly into the wellbore. However, the optimal fracture spacing distance and fracture conductivity are still unclear for the field practice, even though the technique has improved significantly over the last several years. In this work, an analytical method is proposed to address it. First, the analytical production rate for a single fracture is proposed, and then, we apply Duhamel principle to obtain the production rate of a horizontal well with multifractures. Based on this model, the flow regimes and essential affecting factors including fracture spacing, fracture conductivity, and skin factor are analyzed in this work. The optimal values and suggestion are provided based on the simulation results.

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Figures

Grahic Jump Location
Fig. 1

Schematic of a multifractured horizontal well

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Fig. 2

Validation of Laplace numerical inversion

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Fig. 3

Dimensionless pressure and pressure derivative of a multifractured horizontal well

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Fig. 4

Dimensionless production rate and rate derivative of a multifractured horizontal well

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Fig. 5

Dimensionless production rate of the proposed analytical model and numerical model with different reservoir widths

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Fig. 6

Dimensionless production rates for different dimensionless fracture conductivities

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Fig. 7

Dimensionless production rates for different fracture spacing with dimensionless conductivity equals to 10 and 1

Grahic Jump Location
Fig. 8

Effect of skin on dimensionless production rate with different fracture conductivities

Tables

Errata

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