A Study on Shape Memory Material for Gas Hydrate Well Completion

doi:10.11885/j.issn.1674-5086.2020.05.20.02

Abstract

Abstract: In order to solve the problem of sand production in the process of gas hydrate development more effectively, and ensure the stable and high yield of gas hydrate wells, the development of shape memory polymers for gas hydrate development is carried out. We choose the PCL/PM-200 system to synthesize open cell shape memory polyurethane foam in one step by combining physical foaming and chemical foaming. The shape memory polymers' memory properties, mechanical properties, thermal properties, cell structure properties are characterized and tested. The results show that the foam requires simple processing technology, and is of high shape recovery rate, good mechanical properties, uniform porosity, good temperature resistance and glass transition temperature, which is in line with the change of temperature-sensitive shape memory materials, which can meet the performance requirements of NGH shape memory materials. The system is used to produce shape memory material for gas hydrate development and to manufacture shape memory screen, which provides a new and effective well completion method for gas hydrate test and commercial development in the future.

Key words: natural gas hydrate, well completion, shape memory, polyurethane foam, one-step method, open cell

CLC Number:

TE257

DUAN Youzhi, LIU Huanle, LIU Jinchun. A Study on Shape Memory Material for Gas Hydrate Well Completion[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(4): 139-144.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2020.05.20.02

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2022/V44/I4/139

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