Study on methane hydrate distributions in laboratory samples by electrical resistance characteristics during hydrate formation

doi:10.1016/j.jngse.2020.103385

	Study on methane hydrate distributions in laboratory samples by electrical resistance characteristics during hydrate formation
	He, Juan 1,2,3,4; Li, Xiaosen 1,2,3; Chen, Zhaoyang 1,2,3; Li, Qingping 5; Zhang, Yu 1,2,3; Wang, Yi 1,2,3; You, Changyu 1,2,3,4
刊名	JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
	2020-08-01
卷号	80 页码:12
关键词	hydrate distributions electrical resistance changes deionized water resistance ratio net increase of resistance temperature distributions
ISSN号	1875-5100
DOI	10.1016/j.jngse.2020.103385
通讯作者	Chen, Zhaoyang(chenzy@ms.giec.ac.cn)
英文摘要	To determine hydrate distributions in laboratory samples, a 5.701 L cylindrical reactor was designed and fabricated to synthesize hydrate-bearing samples with the excess-water method. The influences of temperature, water content, gas content, and electrode distance on the changing rules of electrical resistance, as well as measuring electrical resistance in nine samples, were systematically studied. The results indicated that the electrical resistance was increased with decreasing temperature, reducing water content or increasing gas content in deionized water settings, resembling electrical resistance changes in brine system. These rules were further used to analyze electrical resistance characteristics in the whole process of preparing and forming hydrate-bearing samples. Fresh hydrate formation was found to govern the electrical resistance increases after the induction periods. Resistance ratio and net increase of resistance analyses showed that the hydrate distributions in the samples with small hydrate saturations suffered more heterogeneity. Hydrate distributions in the samples with small and large hydrate saturations were inferred to be mass-like and rod-like, respectively. In addition, the dissociation of a sample (S-h = 19.46%) by depressurization confirmed more hydrates were dispersed near the right side of this cylindrical sample, which was in agreement with the result from electrical resistance analysis. Since hydrate distributions affected the outcomes of physical simulations, this work may offer some references to similar studies.
资助项目	National Natural Science Foundation of China[51576202] ; National Natural Science Foundation of China[51736009] ; National Key R&D Program of China[2016YFC0304002] ; Special Project for Marine Economy Development of Guangdong Province[GDME-2018D002] ; CAS Science and Technology Apparatus Development Program[YZ201619]
WOS关键词	NATURAL-GAS HYDRATE ; POROUS-MEDIA ; THERMAL-STIMULATION ; DEPRESSURIZATION ; DISSOCIATION ; RESISTIVITY ; SEDIMENT ; RECOVERY ; DECOMPOSITION ; SATURATION
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000549566600003
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China ; Special Project for Marine Economy Development of Guangdong Province ; CAS Science and Technology Apparatus Development Program
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/27414]
专题	中国科学院广州能源研究所
通讯作者	Chen, Zhaoyang
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.CNOOC Res Inst, State Key Lab Nat Gas Hydrates, Beijing 100028, Peoples R China
推荐引用方式 GB/T 7714	He, Juan,Li, Xiaosen,Chen, Zhaoyang,et al. Study on methane hydrate distributions in laboratory samples by electrical resistance characteristics during hydrate formation[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2020,80:12.
APA	He, Juan.,Li, Xiaosen.,Chen, Zhaoyang.,Li, Qingping.,Zhang, Yu.,...&You, Changyu.(2020).Study on methane hydrate distributions in laboratory samples by electrical resistance characteristics during hydrate formation.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,80,12.
MLA	He, Juan,et al."Study on methane hydrate distributions in laboratory samples by electrical resistance characteristics during hydrate formation".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 80(2020):12.