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Research Papers: Petroleum Engineering

Experimental and Numerical Evaluation of Water Control and Production Increase in a Tight Gas Formation With Polymer

[+] Author and Article Information
Guangfeng Liu

State Key Laboratory of Petroleum Resources and Prospecting,
Engineering Research Center of Gas Resource Development and Utilization of Ministry of Education,
China University of Petroleum (Beijing),
Beijing 102249, China
e-mail: lgf@cup.edu.cn

Zhan Meng

State Key Laboratory of Petroleum Resources and Prospecting,
China University of Petroleum (Beijing),
Beijing 102249, China;
Petroleum Systems Engineering,
Faculty of Engineering and Applied Science,
University of Regina,
Regina, Canada S4S 0A2
e-mail: zhan.meng@uregina.ca

Xuejiao Li

State Key Laboratory of Petroleum Resources and Prospecting,
China University of Petroleum (Beijing),
Beijing 102249, China
e-mail: lijunjiao-11@163.com

Daihong Gu

State Key Laboratory of Petroleum Resources and Prospecting,
Engineering Research Center of Gas Resource Development and Utilization of Ministry of Education,
China University of Petroleum (Beijing),
Beijing 102249, China
e-mail: gudaihong@cup.edu.cn

Daoyong Yang

Petroleum Systems Engineering,
Faculty of Engineering and Applied Science,
University of Regina,
Regina, Canada S4S 0A2
e-mail: tony.yang@uregina.ca

Hang Yin

State Key Laboratory of Petroleum Resources and Prospecting,
China University of Petroleum (Beijing),
Beijing 102249, China
e-mail: yinhangzzz@163.com

1These authors contributed equally to this work.

2Corresponding authors.

Contributed by the Petroleum Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received January 31, 2019; final manuscript received April 1, 2019; published online April 17, 2019. Assoc. Editor: Hameed Metghalchi.

J. Energy Resour. Technol 141(10), 102903 (Apr 17, 2019) (6 pages) Paper No: JERT-19-1063; doi: 10.1115/1.4043392 History: Received January 31, 2019; Accepted April 02, 2019

An integrated technique has been developed to experimentally and numerically evaluate water control and production increase in a tight gas formation with polymer. Experimentally, polymer has been appropriately selected and formulated to form a preferentially blocking membrane on the surface of pore and throat in core plugs collected from a tight gas reservoir. The unsteady-state experiments at high temperatures and confining pressures are then conducted to not only measure gas and water relative permeability but also to evaluate the performance of water control and gas production with and without such formulated polymers. The inlet and outlet pressure of the coreholder and flow rates of water and gas are measured throughout the displacement experiments. Theoretically, numerical simulations have been performed to history match the coreflooding experiments and then extended to evaluate well performance in gas fields with and without polymer treatment. Due to the good agreement between the simulated relative permeability and the measured values, the formulated polymer is found to simultaneously control water and increase gas production. Also, it is found from simulation that, after 10 years of production, gas wells after polymer injection show a higher recovery of 10.8% with a lower water-to-gas ratio and a higher formation pressure.

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Figures

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Fig. 1

Schematic diagram for the experimental setup

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Fig. 2

(a) Gas–water relative permeability curves before and after polymer injection and (b) water and gas effective permeability as a function of water saturation

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Fig. 3

Water and gas residual resistance factor as a function of water saturation

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Fig. 4

History matching results of cumulative gas and water production versus time for coreflooding experiments

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Fig. 5

(a) Gas and water production before and after the polymer treatment versus time and (b) cumulative gas production, gas recovery, and average formation pressure with and without polymer treatment versus time

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