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Development Status and Trend of Bio-based Polyester Industry
ZHANG Hao, SUN Hai, LIU Yanlong, BIAN Xinchao
Abstract103)   HTML3)    PDF (10223KB)(70)      

Bio-based polyester materials, which are renewable, biodegradable, and biocompatible, meet the environmental protection concept of green and low-carbon development, and they have received more attention and made significant progress in the field of fundamental research and industrialization. This review analyzed the advantages of bio-based polyester materials, the development status of the bio-based polyester industry in China and abroad, the future trend of the bio-based polyester industry, and policy suggestions for the development of the bio-based polyester industry. It was intended to provide a reference for researchers and insiders engaged in the bio-based polyester industry and promote the further development and promotion of bio-based polyester materials.

2025, 4 (1): 160-167.   doi: 10.3981/j.issn.2097-0781.2025.01.016
Current Status and Prospect of Percolation Theory and Development Technologies of Oil and Gas Reservoirs
WANG Jing, SUN Hai, HUANG Zhaoqin, DONG Xiaohu, CHENG Shiqing, YAO Jun
Abstract404)   HTML32)    PDF (17803KB)(486)      

Oil and gas seepage theory is the basis of oil and gas field development, and development technology is the key to efficient development of oil and gas field. With the continuous discovery of complex oil and gas reservoirs such as unconventional and fracture-vuggy reservoirs, it brings new challenges to the theory and development technology of oil and gas seepage. In this paper, the research status and key theoretical methods of percolation theory of oil and gas reservoirs were summarized. The development directions of extreme and intelligent hydrocarbon percolation mechanics, such as the nonlinear coupling of heat-fluid-solid strength and the change of multi-scale hydrocarbon phase state, were proposed. The present status of hydrocarbon reservoir development technology system and key technologies of hydrocarbon reservoir development in our country were reviewed. The development directions of unconventional oil and gas were put forward, such as the in-situ modification “well factory”, the integration of CO2 storage, extraction and production, and intelligent development of oil and gas fields.

2023, 2 (2): 131-144.   doi: 10.3981/j.issn.2097-0781.2023.02.010