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A graphene-enhanced high-barrier and fast-curing film for deep in situ condition preserved coring in coal seams

International Journal of Mining Science and Technology 2023年第11期33卷 1365-1376页

作者： Dongsheng Yang Zhiyu Zhao Yifan Wu Liangyu Zhu Jingli Lu Tao Liu Heping Xie College of Polymer Science and Engineering Sichuan UniversityChengdu 610065China Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengdu 610065China National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China Jin Shi Drill Tech Co. Ltd.Tangshan 063004China

Scientific research on deep in situ resources is highly important to the theory and technology system construction for deep in-situ resource *** obtain high-condition preserved core samples,it is vital to maintain the original material,humidity and luminous flux information inside the ***,this study proposes a research and development strategy for a high-toughness and highbarrier sealing film based on the molecular structure design and filler synergistic enhancement via a deep solid-state sealing film using in situ substance preservation(isp),in situ moisture preservation(imp)and in situ light preservation(ilp)coring principles.A graphene/epoxy composite sealing film with a high barrier,high strength and high toughness was *** oxygen permeability of the film was 0.23 cm^(3)/(m^(2)·d),the water vapor permeability was 1.26 g/(m^(2)·d),and the light transmittance was *** tensile strength reached 15.4 MPa,and the toughness was 5242.9 kJ/m^(3).The results from the film substance and moisture preservation performance verification experiments showed that the sealing film had an excellent sealing effect on small molecules,such as water,alkanes and even ions,which further verified that the sealing film greatly contributed to the maintenance and preservation of deep in-situ resource reserves and abundance.

关键词： isp-imp-ilp-coring Graphene/epoxy resin composites Sealing film

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Deep original information preservation by applying in-situ film formation technology during coring

引用

Petroleum Science 2022年第3期19卷 1322-1333页

作者： Liang-Yu Zhu Tao Liu Zhi-Yu Zhao Yi-Fan Wu Dong-Sheng Yang Xiang-Chao Shi Zhi-Qiang Liu Fei-Fei Lu Pei Qin Xiao-Liang Gao State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengdu610065SichuanChina College of Polymer Science and Engineering Sichuan UniversityChengdu610065China Zaoshenzhuang Village Hancheng TowuLubei DistrictTangshan064002HebeiChina Xi'an Research Institute China Coal Technology&Engineering Group CorpXi'an710077China State Key Laboratory of Coking Coal Exploitation and Comprehensive Utilization Pingdingshan467000China Institute of Coal Mining and Utilization Pingdingshan Tianan Coal Mining Co.LTD.Pingdingshan467000China

Accurately obtaining the original information of an in-situ rock via coring is a significant guiding step for exploring and developing deep oil and gas *** is difficult for traditional coring technology and equipment to preserve the original information in deep *** study develops a technology for insitu substance-preserved(isp),moisture-preserved(imp),and light-preserved(ilp)*** technology stores the original information in real time by forming a solid sealing film on the in-situ sample during *** study designed the isp-imp-ilp-coring process and *** addition,an isp-imp-ilpcoring process simulation system was *** effects of temperature,pressure,and film thickness on the quality of the in-situ film were investigated by performing in-situ film-forming simulation experiments.A solid sealing film with a thickness of 2-3 mm can be formed;it completely covers the core sample and has uniform *** film maintains good isp-imp-ilp properties and can protect the core sample in the in-situ environment *** study verifies the feasibility of“film formation during coring”technology and provides strong support for the engineering application of isp-imp-ilpcoring technology.

关键词： Deep resource exploitation Original information isp-imp-ilp-coring Solid sealing film In-situ film-forming Film formation during coring

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