中国石油大学学报（自然科学版）2018，Vol.42Issue(4)：23-33,11.DOI:10.3969/j.issn.1673-5005.2018.04.003
饶阳凹陷古近系储层流体包裹体特征及成藏期确定
Properties of fluid inclusions and periods of hydrocarbon accumulation in Paleogene reservoirs in Raoyang Depression
摘要
Abstract
Taking an example of Paleogene reservoirs in Raoyang Depression,a detailed study was carried out to determine properties of fluid inclusions through a combination of microscopic examination and micro-thermometric techniques.The hydro-carbon accumulation periods were defined by analyzing the hydrocarbon-generating history of source rocks.The results indicate that the hydrocarbon inclusions can be divided into two phases.The first phase is located in the carbonate cements and the frac-tures within quartz grains with characteristic yellow fluorescence, high salinity and high density.The homogenization tempera-ture of brine inclusions is from 90℃to 100℃.The second phase is located in the dissolution fractures of feldspar and frac-tures through quartz grains with blue-green fluorescence, low salinity and low density.The homogenization temperature is mainly from 120℃to 140℃.There are two major hydrocarbon-generating stages: the Dongying deposition period and the late Guantao deposition period to the Minghuazhen deposition period.The Minghuazhen deposition period is the major stage.A two-period hy-drocarbon accumulation is identified in Paleogene reservoirs.The first period is from the late Dongying deposition period to the early uplift stage, and the second is from the late Guantao deposition period to the Minghuazhen deposition period.Controlled by the thermal evolution and hydrocarbon-generating history of source rocks, the accumulation periods of different parts and lay-ers are different.Petroleum reservoirs generated in the early period are mainly distributed in the source rock layers in the center of hydrocarbon-generating sags.Reservoirs generated in the second period cover all the area which is the main accumulation pe-riod.The upper layers are characterized with late accumulation period, while the lower with two periods.关键词
流体包裹体/均一温度/成藏期/古近系/饶阳凹陷Key words
fluid inclusion/homogenization temperature/hydrocarbon accumulation period/Paleogene/Raoyang Depressiom分类
能源科技引用本文复制引用
蒋有录,张文杰,刘华,杨德相,王鑫..饶阳凹陷古近系储层流体包裹体特征及成藏期确定[J].中国石油大学学报（自然科学版）,2018,42(4):23-33,11.基金项目
国家重大科技专项(2016ZX05006-003) （2016ZX05006-003）
