Origin of deep carbonate reservoir in northeastern Sichuan Basin:New insights from in-situ hydrothermal diamond anvil cell experiments

doi:10.1007/s11771-017-3549-y

CORC > 北京大学 > 地球与空间科学学院

	Origin of deep carbonate reservoir in northeastern Sichuan Basin:New insights from in-situ hydrothermal diamond anvil cell experiments
	ZHANG Shan-ming ; LIU Bo ; QIN Shan ; ZHANG Xue-feng ; TIAN Yong-jing ; GUO Rong-tao ; LIU Jian-qiang
刊名	中南大学学报（英文版）
	2017
关键词	hydrothermal diamond anvil cell (HDAC) closed system early fast deep burial porosity preservation Sichuan Basin hydrothermal diamond anvil cell (HDAC) closed system early fast deep burial porosity preservation Sichuan Basin PUGUANG GAS-FIELD TRIASSIC FEIXIANGUAN FORMATION THERMOCHEMICAL SULFATE REDUCTION MESOGENETIC DISSOLUTION REALITY CHANGXING FORMATION SOUTHWEST CHINA POROSITY CREATION MASS-TRANSFER FORMATION MECHANISM SEDIMENTARY BASINS
DOI	10.1007/s11771-017-3549-y
英文摘要	In situ Raman analysis on the segregated near-equilibrium carbonate-fluid interaction at elevated temperatures (room temperature-260 ℃) and pressures (13-812 MPa) in a hydrothermal diamond anvil cell (HDAC) reveals the preservation mechanism of porosity in deep carbonate reservoirs in the northeastern Sichuan Basin. The carbonate-fluid interaction was investigated by separately heating carbonate minerals and rocks with four different acid solutions (saturated CO2 and H2S solutions, HCl, CH3COOH) in a sealed sample chamber. A minor continuous precipitation with increasing temperatures and pressures was observed during the experiments which caused minor sample volume change. The closed system is a preservation of pores and burial dissolution may not be the dominant diagenesis in the origin of porosity. Thin section photomicrographs observations in Changxing and Feixianguan Formations demonstrate that eogenetic pores such as moldic or intragranular pores with late small euhedral minerals, intergranular, intercrystal and biological cavity pores are the main pore types for the reservoirs. Early fast deep burial makes the porous carbonate sediments get into the closed system as soon as possible and preserves the pores created in the early diagenetic stage to make significant contribution to the deep reservoir quality. The anomalous high porosity at a given depth may come from the inheritance of primary pores and eogenetic porosity is fundamental to carbonate reservoir development. The favorable factors for deep reservoir origin include durable meteoric leaching, early fast deep burial, early dolomitization, etc. This deep pores preservation mechanism may be of great importance to the further exploration in deep carbonate reservoirs in the northeastern Sichuan Basin.; In situ Raman analysis on the segregated near-equilibrium carbonate-fluid interaction at elevated temperatures (room temperature-260 ℃) and pressures (13-812 MPa) in a hydrothermal diamond anvil cell (HDAC) reveals the preservation mechanism of porosity in deep carbonate reservoirs in the northeastern Sichuan Basin. The carbonate-fluid interaction was investigated by separately heating carbonate minerals and rocks with four different acid solutions (saturated CO2 and H2S solutions, HCl, CH3COOH) in a sealed sample chamber. A minor continuous precipitation with increasing temperatures and pressures was observed during the experiments which caused minor sample volume change. The closed system is a preservation of pores and burial dissolution may not be the dominant diagenesis in the origin of porosity. Thin section photomicrographs observations in Changxing and Feixianguan Formations demonstrate that eogenetic pores such as moldic or intragranular pores with late small euhedral minerals, intergranular, intercrystal and biological cavity pores are the main pore types for the reservoirs. Early fast deep burial makes the porous carbonate sediments get into the closed system as soon as possible and preserves the pores created in the early diagenetic stage to make significant contribution to the deep reservoir quality. The anomalous high porosity at a given depth may come from the inheritance of primary pores and eogenetic porosity is fundamental to carbonate reservoir development. The favorable factors for deep reservoir origin include durable meteoric leaching, early fast deep burial, early dolomitization, etc. This deep pores preservation mechanism may be of great importance to the further exploration in deep carbonate reservoirs in the northeastern Sichuan Basin.; Project(2011ZX05005-003-010HZ) supported by the National Science and Technology Major Project, China; Projects(41272137, 41002029) supported by the National Natural Science Foundation of China; SCI(E); 6; 1450-1464; 24
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/462432]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	ZHANG Shan-ming,LIU Bo,QIN Shan,et al. Origin of deep carbonate reservoir in northeastern Sichuan Basin:New insights from in-situ hydrothermal diamond anvil cell experiments[J]. 中南大学学报（英文版）,2017.
APA	ZHANG Shan-ming.,LIU Bo.,QIN Shan.,ZHANG Xue-feng.,TIAN Yong-jing.,...&LIU Jian-qiang.(2017).Origin of deep carbonate reservoir in northeastern Sichuan Basin:New insights from in-situ hydrothermal diamond anvil cell experiments.中南大学学报（英文版）.
MLA	ZHANG Shan-ming,et al."Origin of deep carbonate reservoir in northeastern Sichuan Basin:New insights from in-situ hydrothermal diamond anvil cell experiments".中南大学学报（英文版） (2017).