石油实验地质2016，Vol.38Issue(5)：635-640,6.DOI:10.11781/sysydz201605635
超深层油气藏石油地质特征及其成藏主控因素分析
Petoleum geology features and accumulation controls for ultra-deep oil and gas reservoirs
摘要
Abstract
According to previous studies and specific geological settings of different regions, ultra⁃deep reservoirs have been defined as being 6 km. Petroleum geology studies of ultra⁃deep reservoirs have been made, including considerations of source rock, reservoir, cap rock and trap. Compared to conventional source rocks, the source rocks in ultra⁃deep reservoirs entered the mature stage later and have a higher maturity. Hydrocarbon generation was controlled by temperature, time and pressure. Overpressure strongly restricted the thermal evolution of orga⁃nic matter and hydrocarbon generation. Secondary pores with an older age worked as the main reservoir space. Carbonate rocks account for 33% of reservoir. Cap rocks are dominated by evaporites and mudrocks. The major traps are structural, lithological, reef and combination traps. The formation of ultra⁃deep reservoirs was controlled by abnormal pressure and temperature. It is suggested that ultra⁃deep oil and gas exploration in China should focus on the areas with lower geothermal gradients, stratigraphic intervals with secondary porosity and well⁃developed overpressures, deeply⁃buried carbonate rocks, sub⁃salt sequences and East China’ s deep offshore areas.关键词
高温高压/超深层/油气成藏/石油地质Key words
high temperature and high pressure/ultra-deep/hydrocarbon accumulation/petroleum geology分类
能源科技引用本文复制引用
黄娟,叶德燎,韩彧..超深层油气藏石油地质特征及其成藏主控因素分析[J].石油实验地质,2016,38(5):635-640,6.基金项目
中国石化前瞻性研究项目（ G5800－13－25－KJB024－4）。 （）
