Phase Equilibrium of Methane Hydrate in Aqueous Solutions of Clay Stabilizers

doi:10.1021/acs.jced.0c00798

	Phase Equilibrium of Methane Hydrate in Aqueous Solutions of Clay Stabilizers
	Yao, Yuanxin 1,2,3,4,5,6; Liu, Lu 1,2,3,4,5,6; Zhou, Xuebing 1,2,3,4,5,6; Li, Dongliang 1,2,3,4,5,6; Liang, Deqing 1,2,3,4,5,6
刊名	JOURNAL OF CHEMICAL AND ENGINEERING DATA
	2021-01-14
卷号	66 期号:1 页码:598-608
ISSN号	0021-9568
DOI	10.1021/acs.jced.0c00798
通讯作者	Li, Dongliang(ldl@ms.giec.ac.cn)
英文摘要	The effects of high concentrations of clay stabilizers in drilling and fracturing fluids on wellbore flow safety and natural gas hydrate exploitation have gained recent interest. This study investigated the effects of different concentrations of inorganic polymer, alkali, and silicate clay stabilizers on the phase equilibrium of methane hydrate at experimental mass concentrations of 2, 5, 10, and 15 wt %. The inorganic polymer clay stabilizers employed are zirconium oxychloride and polyaluminum chloride, the alkali clay stabilizer is potassium hydroxide, and the silicate clay stabilizers are potassium silicate, potassium methyl silicate, sodium silicate, and sodium methyl silicate. The clay stabilizers caused the phase equilibrium curve of methane hydrate to shift to higher pressures and lower temperatures and exhibited different degrees of thermodynamic inhibition. The average temperature drop ranged from 0.09 to 9.28 K, and the inhibition effect increased with concentration. The inhibition effect of the inorganic polymer clay stabilizers on methane hydrate was the weakest, while potassium hydroxide and sodium methyl silicate exhibited the strongest inhibition ability. The hydrate samples were also characterized in the presence of the clay stabilizers by powder X-ray diffraction, Raman spectroscopy, and cryo-scanning electron microscopy. The clay stabilizers did not alter the crystal structures of the hydrates, but they did affect the occupation of methane molecules in the 5(12)6(2) hydrate cage. The hydrates on the sample surfaces were distributed regularly under the influence of the electrolytes, which also confirms the inhibitory effect of clay stabilizers on hydrate formation.
资助项目	National Natural Science Foundation of China[51661165011] ; National Natural Science Foundation of China[51706230] ; Guangdong Natural Science Foundation[2018B0303110007] ; Guangdong Province MED Project[GDOE[2019]A39] ; Guangdong Province MED Project[GDOE[2019]A41] ; Guangdong Special Support Program[2019BT02L278] ; Science and Technology Planning Project of Guangzhou City, China[201707010252]
WOS关键词	GAS-HYDRATE ; CARBON-DIOXIDE ; DISSOCIATION ; MGCL2 ; KCL ; PERMEABILITY ; ETHANE ; CACL2 ; NACL
WOS研究方向	Thermodynamics ; Chemistry ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000611409200057
资助机构	National Natural Science Foundation of China ; Guangdong Natural Science Foundation ; Guangdong Province MED Project ; Guangdong Special Support Program ; Science and Technology Planning Project of Guangzhou City, China
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/32758]
专题	中国科学院广州能源研究所
通讯作者	Li, Dongliang
作者单位	1.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 5.State Key Lab Nat Gas Hydrate, Beijing 100028, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yao, Yuanxin,Liu, Lu,Zhou, Xuebing,et al. Phase Equilibrium of Methane Hydrate in Aqueous Solutions of Clay Stabilizers[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2021,66(1):598-608.
APA	Yao, Yuanxin,Liu, Lu,Zhou, Xuebing,Li, Dongliang,&Liang, Deqing.(2021).Phase Equilibrium of Methane Hydrate in Aqueous Solutions of Clay Stabilizers.JOURNAL OF CHEMICAL AND ENGINEERING DATA,66(1),598-608.
MLA	Yao, Yuanxin,et al."Phase Equilibrium of Methane Hydrate in Aqueous Solutions of Clay Stabilizers".JOURNAL OF CHEMICAL AND ENGINEERING DATA 66.1(2021):598-608.