Physical characteristics of high concentrated gas hydrate reservoir in the Shenhu production test area,South China Sea

IOCAS-IR

	Physical characteristics of high concentrated gas hydrate reservoir in the Shenhu production test area,South China Sea
	Jiapeng JIN ; Xiujuan WANG ; Zhenyu ZHU ; Pibo SU ; Lixia LI ; Qingping LI ; Yiqun GUO ; Jin QIAN ; Zhendong LUAN ; Jilin ZHOU
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2023-03-15
出版年	2023
卷号	v.41 期号:02 页码:294-309
文献类型	CNKI期刊论文
摘要	High concentrated and heterogeneous distribution of gas hydrates have been identified in the gas hydrate production test region in the Shenhu area, South China Sea. The gas hydrate-bearing sediments with high saturation locate at two ridges of submarine canyon with different thickness and saturations just above the bottom simulating reflection. The crossplots of gamma ray, acoustic impedance(P-impedance) and porosity at four sites show that the sediments can be divided into the upper and lower layers at different depths, indicating different geotechnical reservoir properties. Therefore, the depositional environments and physical properties at two ridges are analyzed and compared to show the different characteristics of hydrate reservoir. High porosity, high P-wave velocity, and coarse grain size indicate better reservoir quality and higher energy depositional environment for gas hydrate at Sites W18 and W19 than those at Sites W11 and W17. Our interpretation is that the base of canyon deposits at Sites W18 and W19 characterized by upward-coarsening units may be turbidity sand layers, thus significantly improving the reservoir quality with increasing gas hydrate saturation. The shelf and slope sliding deposits compose of the fine-grained sediments at Sites W11 and W17. The gas hydrate production test sites were conducted at the ridge of W11 and W17, mainly because of the thicker and larger area of gas hydrate-bearing reservoirs than those at Sites W18 and W19. All the results provide useful insights for assessing reservoir quality in the Shenhu area.
关键词	reservoir properties gas hydrate production test region depositional environment South China Sea
CNKI专辑号	A;B;C;
CNKI专辑名称	基础科学;工程科技Ⅰ辑;工程科技Ⅱ辑;
CNKI专题号	A010;A011;B019;C041;
CNKI专题名称	海洋学;地质学;石油天然气工业;新能源;
分类号	P618.13;P744.4
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(No. GML2019ZD0104) ; the National Natural Science Foundation of China (Nos. U19B2005, 42076072) ; the Pilot National Laboratory for Marine Science and Technology (Qingdao) Initial Foundation (No. JCZX202019) ; the Research Start-up Funds of Zhufeng Scholars Program
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187169
专题	中国科学院海洋研究所
作者单位	1.FrontiersScienceCenterforDeepOceanMultispheresandEarthSystem,KeyLabofSubmarineGeosciencesandProspectingTechniques,MOEandCollegeofMarineGeosciences,OceanUniversityofChina 2.Deep-seaMultidisciplinaryResearchCenter&LaboratoryforMarineMineralResources,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 3.CenterforOceanMega-Science&KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 4.ChinaNationalOffshoreOilCorporationResearchInstituteCo.Ltd. 5.GuangzhouMarineGeologicalSurvey,ChinaGeologicalSurvey,MinistryofNaturalResources 6.HaikouCenterofMarineGeologicalSurvey,ChinaGeologicalSurvey
推荐引用方式 GB/T 7714	Jiapeng JIN,Xiujuan WANG,Zhenyu ZHU,et al. Physical characteristics of high concentrated gas hydrate reservoir in the Shenhu production test area,South China Sea. 2023.