低碳化学与化工2023，Vol.48Issue(6)：142-149,8.DOI:10.12434/j.issn.2097-2547.20220368
海域水合物藏样品实验室制备及生成特性
Laboratory preparation and formation characteristics of hydrate samples for marine reservoirs
摘要
Abstract
It is not easy to obtain hydrate samples from actual marine reservoirs,and a large number of basic experiments in laboratory are still needed to support their resource exploitation.In order to accurately prepare representative hydrate reservoir samples,the laboratory developed a set of three-dimensional experimental device for natural gas hydrates.By multiple-times water injections,the saturation of gas,water and hydrates in target samples and the temperature and pressure conditions of the generated system were controlled,and the parameter characteristics of pressure,temperature and resistivity in system during the formation of methane hydrates were analyzed.The results show that multiple-times water injections can effectively control the saturation of each phase in the sample.It is difficult to observe the induction period of hydrate formation when the driving pressure and the degree of supercooling are large enough.Under the good heat transfer of the surrounding water bath,the temperature rise caused by the exothermic formation of hydrates could be eliminated.The resistivity change shows that there may be"wall climbing effect"in the formation of hydrates in porous media,but there are many factors affecting the resistivity change,which is difficult to accurately judge the formation of hydrates in porous media.In addition,the increase of the initial gas-liquid ratio can promote the increase of the hydrate formation rate.关键词
海域水合物藏/多孔介质/多次注水/生成特性/爬壁效应Key words
marine hydrate reservoir/porous media/multiple-times water injection/formation properties/wall climbing effect分类
能源科技引用本文复制引用
吕涛,潘杰,张丽,申鹏飞,王武杰..海域水合物藏样品实验室制备及生成特性[J].低碳化学与化工,2023,48(6):142-149,8.基金项目
陕西省自然科学基础研究计划(2023-JC-QN-0389) （2023-JC-QN-0389）
河北省高等学校科学技术研究(QN2022027) （QN2022027）
广东省新能源和可再生能源研究开发与应用重点实验室开放基金(E239kf0601). （E239kf0601）
