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Pressure and pressure derivative determination of the average reservoir pressure for vertical wells in naturally fractured reservoirs from buildup, drawdown and multi-rate tests

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Title: Pressure and pressure derivative determination of the average reservoir pressure for vertical wells in naturally fractured reservoirs from buildup, drawdown and multi-rate tests

Journal: ARPN Journal of Engineering and Applied Sciences

HEC Recognition History
Category From To
Y 2023-07-01 2024-09-30
Y 2022-07-01 2023-06-30
Y 2021-07-01 2022-06-30
X 2020-07-01 2021-06-30

Publisher: Khyber Medical College, Peshawar

Country: Pakistan

Year: 2021

Volume: 16

Issue: 19

Language: English

Keywords: Freddy Humberto EscobarAngela Maria PalominoDaniel Suescun-Diaz

Categories
Horizontal Wells (8) Well Testing (30) Naturally Fractured Reservoirs (1) Petroleum Engineering (547) Reservoir Engineering (185)

Abstract

The late-time well pressure solution for a homogeneous reservoir changes when the well has been fractured. Same situation happens in a naturally fracture reservoir. Then, the average reservoir pressure ought to be changed. In this work, both average reservoir pressure and reservoir shape factor equations are provided for hydraulically-fractured vertical wells in naturally fractured occurring formations bearing hydrocarbons. The expressions are given for buildup, drawdown and multi-rate tests in both oil and gas tests. These expressions are successfully tested with synthetic examples and compared to calculations from a commercial well test software given absolute deviation errors lower than 1.3 %.

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