Origin and Sources of Minerals and Their Impact on the Hydrocarbon Reservoir Quality of the PaleogeneLulehe Formation in the Eboliang Area, Northern Qaidam Basin, China

doi:10.3390/min9070436

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 兰州油气中心

	Origin and Sources of Minerals and Their Impact on the Hydrocarbon Reservoir Quality of the PaleogeneLulehe Formation in the Eboliang Area, Northern Qaidam Basin, China
	Chen, Bo 1,2; Wang, Feng 1; Shi, Jian 2; Chen, Fenjun 3; Shi, Haixin 1
刊名	MINERALS
	2019-07-01
卷号	9 期号:7 页码:26
关键词	diagenesis authigenic minerals reservoir quality Eboliang Qaidam Basin
ISSN号	2075-163X
DOI	10.3390/min9070436
英文摘要	The Lulehe sandstone in the Eboliang area is a major target for hydrocarbon exploration in the northern Qaidam Basin. Based on an integrated analysis including thin section analysis, scanning electron microscopy, X-ray diffraction, cathodoluminescence investigation, backscattered electron images, carbon and oxygen stable isotope analysis and fluid inclusion analysis, the diagenetic processes mainly include compaction, cementation by carbonate and quartz, formation of authigenic clay minerals (i.e., chlorite, kaolinite, illite-smectite and illite) and dissolution of unstable materials. Compaction is the main factor for the deterioration of reservoir quality; in addition, calcite cement and clay minerals are present, including kaolinite, pore-filling chlorite, illite-smectite and illite, which also account for reservoir quality reduction. Integration of petrographic studies and isotope geochemistry reveals the carbonate cements might have originated from mixed sources of bioclast- and organic-derived CO2 during burial. The quartz cement probably formed by feldspar dissolution, illitization of smectite and kaolinite, as well as pressure solution of quartz grains. Smectite, commonly derived from alteration of volcanic rock fragments, may have been the primary clay mineral precursor of chlorite. In addition, authigenic kaolinite is closely associated with feldspar dissolution, suggesting that alteration of detrital feldspar grains was the most probable source for authigenic kaolinite. With the increase in temperature and consumption of organic acids, the ratio of K+/H+ increases and the stability field of kaolinite is greatly reduced, thereby transforming kaolinite into mixed layer illite/smectite and illite. Within the study area, porosity increases with chlorite content up to approximately 3% volume and then decreases slightly, indicating that chlorite coatings are beneficial at an optimum volume of 3%. A benefit of the dissolution of unstable minerals and feldspar grains is the occurrence of secondary porosity, which may enhance porosity to some extent. However, the solutes cannot be transported over a large scale in the deep burial environment, and simultaneous precipitation of byproducts of feldspar dissolution such as authigenic kaolinite and quartz cement will occur in situ or in adjacent pores, resulting in heterogeneity of the reservoirs.
资助项目	High level innovation teams and excellent scholars program in Guangxi Universities[Guijiao Ren [2016]42] ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi[2018KY0610] ; Scientific research project of Beibu Gulf University[17KYQD57]
WOS关键词	CARBONATE CEMENTS ; SANDSTONE RESERVOIRS ; MASS-TRANSFER ; DEEP-WATER ; OIL-FIELD ; DIAGENETIC CONSTRAINTS ; TEMPORAL DISTRIBUTION ; MIOCENE SANDSTONES ; QUARTZ CEMENTATION ; CALCITE CEMENT
WOS研究方向	Mineralogy ; Mining & Mineral Processing
语种	英语
出版者	MDPI
WOS记录号	WOS:000478593300008
资助机构	High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; High level innovation teams and excellent scholars program in Guangxi Universities ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Basic Ability Improvement Project for Young and Middle-aged Teachers in Guangxi ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University ; Scientific research project of Beibu Gulf University
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/93333]
专题	地质与地球物理研究所_兰州油气中心
通讯作者	Chen, Bo; Wang, Feng; Shi, Haixin
作者单位	1.Beibu Gulf Univ, Key Lab Beibu Gulf Oil & Nat Gas Resource Effect, Guangxi Coll & Univ, Qinzhou 515000, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China 3.PetroChina, Qinghai Oilfield Co, Explorat & Prod Res Inst, Dunhuang 736202, Peoples R China
推荐引用方式 GB/T 7714	Chen, Bo,Wang, Feng,Shi, Jian,et al. Origin and Sources of Minerals and Their Impact on the Hydrocarbon Reservoir Quality of the PaleogeneLulehe Formation in the Eboliang Area, Northern Qaidam Basin, China[J]. MINERALS,2019,9(7):26.
APA	Chen, Bo,Wang, Feng,Shi, Jian,Chen, Fenjun,&Shi, Haixin.(2019).Origin and Sources of Minerals and Their Impact on the Hydrocarbon Reservoir Quality of the PaleogeneLulehe Formation in the Eboliang Area, Northern Qaidam Basin, China.MINERALS,9(7),26.
MLA	Chen, Bo,et al."Origin and Sources of Minerals and Their Impact on the Hydrocarbon Reservoir Quality of the PaleogeneLulehe Formation in the Eboliang Area, Northern Qaidam Basin, China".MINERALS 9.7(2019):26.