An assessment of hydrates inhibition in deepwater production systems using low-dosage hydrate inhibitor and monoethylene glycol

Journal of Petroleum Exploration and Production Technology

卷:10

Yahaya D. Baba¹  Funsho A. Afolabi²  Pius E. Edet²  Ndubuisi U. Okereke³  Ngozi Nwogu³  Nkemakolam C. Izuwa³  Onyebuchi Nwanwe³  Sunday Kanshio⁴ 

[1]Department of Chemical and Biological Engineering, University of Sheffield

[2]|Department of Chemical and Petroleum Engineering, Afe Babalola University

[3]|Department of Petroleum Engineering, Federal University of Technology

[4]|Department of Petroleum and Gas Engineering, Baze University

关键词: Hydrates;    Inhibition;    Deepwater;    Nucleation rate;    MAXIMUS;   

DOI  :  10.1007/s13202-019-00812-4

来源: DOAJ

【 摘 要 】

Abstract In this study, a deepwater pipeline-riser system that experienced hydrates was modelled in MAXIMUS 6.20 (an integrated production modelling tool) to understand, predict and mitigate hydrates formation in typical deepwater system. Highlights of the results from this study suggest that the injection of low-dosage hydrate inhibitors (LDHIs) into the hydrate-forming structures within the multiphase flow stream disperses the hydrates particles in an irregular manner and subsequently decreases the nucleation rate of the hydrate and prevents the formation of hydrates. This study found that the cost of using monoethylene glycol was significantly higher than that of LDHI by over $500/day although low-dosage hydrate inhibitors have initial relatively high CAPEX. In the long run, its OPEX is relatively low, making it cost-effective for hydrate inhibition in deepwater scenarios.

【 授权许可】

Unknown