Integrated hydraulic fracturing techniques to enhance oil recovery from tight rocks

Fujian ZHOU; Hang SU; Xingyuan LIANG; Leifeng MENG; Lishan YUAN; Xiuhui LI; Tianbo LIANG

Petroleum Exploration and Development (Oct 2019)

Integrated hydraulic fracturing techniques to enhance oil recovery from tight rocks

Fujian ZHOU,
Hang SU,
Xingyuan LIANG,
Leifeng MENG,
Lishan YUAN,
Xiuhui LI,
Tianbo LIANG

Affiliations

Fujian ZHOU: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Hang SU: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Xingyuan LIANG: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Leifeng MENG: CNPC Xibu Drilling Engineering Company, Karamay 834000, China
Lishan YUAN: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Xiuhui LI: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Tianbo LIANG: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China; Corresponding author

Journal volume & issue: Vol. 46, no. 5
pp. 1065 – 1072

Abstract

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Two main challenges exist in enhancing oil recovery rate from tight oil reservoirs, namely how to create an effective complicated fracture network and how to enhance the imbibition effect of fracturing fluid. In response to the challenges, through modeling experiment in laboratory and evaluation of field application results, a set of integrated efficient fracturing and enhanced oil recovery (EOR) techniques suitable for tight oil development in China has been proposed. (1) Fracturing with temporary plugging agents to realize stimulation in multiple clusters, to form dense fracture network, and thus maximizing the drainage area; (2) Supporting induced fractures with micro-sized proppants during the prepad fluid fracture-making stage, to generate dense fracture network with high conductivity; (3) Using the liquid nanofluid as a fracturing fluid additive to increase oil-water displacement ratio and take advantage of the massive injected fracturing fluid and maximize the oil production after hydraulic fracturing. Key words: tight oil, hydraulic fracturing, imbibition recovery, temporary plugging agent, micro-sized proppant, nanofluid, surfactant, enhanced oil recovery

Published in Petroleum Exploration and Development

ISSN: 2096-4803 (Print); 1876-3804 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Chemical technology: Oils, fats, and waxes: Petroleum refining. Petroleum products
Website: https://www.keaipublishing.com/en/journals/petroleum-exploration-and-development/

About the journal