Research and application of thermal insulation effect of natural gas hydrate freezing corer based on the wireline-coring principle

作     者：Yun-Qi Hu Jing Xie Shou-Ning Xue Meng Xu Cheng-Hang Fu Hui-Lan He Zhi-Qiang Liu Shao-Ming Ma Si-Qing Sun Chuan-Liu Wang Yun-Qi Hu;Jing Xie;Shou-Ning Xue;Meng Xu;Cheng-Hang Fu;Hui-Lan He;Zhi-Qiang Liu;Shao-Ming Ma;Si-Qing Sun;Chuan-Liu Wang

作者机构：School of Mechanical EngineeringSichuan UniversityChengdu610065China MOE Key Laboratory of Deep Underground Science and EngineeringSichuan UniversityCollege of Water Resource and HydropowerSichuan UniversityChengdu610065China Zhensha Hydropower Construction Management Branch of Guoneng Dadu River Basin Hydropower Development Co.LtdLeshan614700SichuanChina Jin Shi Drill Tech Co.LtdTangshan063004HebeiChina Xi'an Research InstituteChina Coal Technology&Engineering Group CorpXi'an710077ShaanxiChina 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2022年第19卷第3期

页      面：1291-1304页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：supported by the Program for Guangdong Introducing Innovative and Entrepreneurial Teams(No.2019ZT08G315) National Natural Science Foundation of China No.51827901 and U2013603 Shenzhen Basic Research Project(JCYJ20190808153416970) 

主　　题：Natural gas hydrate Coring Cold source freezing In situ temperature and pressure 

摘      要：Natural gas hydrate(NGH)holds great promise as a source of clean *** is critical for acquiring the largest possible in situ NGH core for NGH eigen features and resource ***,the existing NGH coring technology has limitations,such as temperature increments,limited coring diameters,low coring rates,and complex coring ***,this study designs and proposes an NGH freezing coring(NGHFC)method and verifies the freezing and coring capacities of the NGHFC method in laboratories and experimental *** suggest that NGHFC shows good freezing and heat-retention properties.A freezing core heat transfer model is *** to the actual air temperature and operating time,the optimum initial temperature of the cold source can be determined using this *** average coring rate of NGHFC can reach 77.86%.The research results will provide a new idea of coring gas hydrates.