Experimental study on the controlling factors of frictional coefficient for lost circulation control and formation damage prevention in deep fractured tight reservoir

Chengyuan Xu; Honglin Zhang; Mingming Zhu; Yili Kang; Xiaopeng Yan; Jingyi Zhang; Yingrui Bai

Petroleum (Sep 2022)

Experimental study on the controlling factors of frictional coefficient for lost circulation control and formation damage prevention in deep fractured tight reservoir

Chengyuan Xu,
Honglin Zhang,
Mingming Zhu,
Yili Kang,
Xiaopeng Yan,
Jingyi Zhang,
Yingrui Bai

Affiliations

Chengyuan Xu: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China; School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, China; Corresponding author.
Honglin Zhang: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China
Mingming Zhu: Changqing Drilling Branch, CNPC Chuanqing Drilling Engineering Co., Ltd., Xi'an 710000, China
Yili Kang: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China
Xiaopeng Yan: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China
Jingyi Zhang: State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China
Yingrui Bai: School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, China

Journal volume & issue: Vol. 8, no. 3
pp. 352 – 362

Abstract

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Working fluids loss is a major contributor to low productivity during production process of fractured tight reservoirs. Lost circulation control effect directly related to the tribological behavior between fracture surface and lost circulation materials (LCMs). In this study, the friction coefficient (FC) was investigated using typical clastic rocks and LCMs by considering multiple effect factors divided into external condition and internal condition. The results show that normal load had a relatively high effect on sliding model. A positive correlation was observed between FC and asperities heights. FC decreased induced by particle size degradation of rigid LCMs. Elastic LCMs manifested higher FC compared with rigid LCMs. Under the lubrication condition by working fluid, FC of rigid LCMs was mainly controlled by their surface wettability. FC of organic LCMs is more sensitive to high temperature aging than inorganic LCMs. Fracture plugging experiments show that LCMs optimized based on the research results can effectively improve the efficiency and strength of fracture plugging.

Published in Petroleum

ISSN: 2405-6561 (Print); 2405-5816 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Chemical technology: Oils, fats, and waxes: Petroleum refining. Petroleum products; Technology: Engineering (General). Civil engineering (General): Engineering geology. Rock mechanics. Soil mechanics. Underground construction
Website: https://www.keaipublishing.com/en/journals/petroleum/

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