摘要
位于鄂尔多斯盆地陕北斜坡东部的杨旗区主要产油层段长6~1油层组的岩性以浅灰色、灰绿色、深灰色细粒长石砂岩为主,夹深灰色、黑色泥岩.通过岩心观察、薄片鉴定、物性和测井相分析认为,长6~1油层组砂岩储层为湖泊三角洲沉积产物,发育三角洲平原亚相类,有多种微相.油藏分布主要受沉积特征控制,还与其他因素有关.河道砂体是最主要的含油部位,砂体大量发育的长6~1为主要含油层位之一.层内的含油性主要受沉积微相的控制,还与物性、构造等因素有关.
The lithology of the Chang 6~1 reservoirs in Yangqi area,eastern part of the north slope of Ordos Basin,ismainly light gray,gray green and dark grey fine-grained feldspathic sandstones,in which there are interbeds of darkgray and black mudstone. According to core observation,slice identification,physical property analysis and loggingphase analysis,it is held that the Chang 6~1 reservoirs are mainly lacustrine delta deposits,in which of delta plain isdeveloped,and there are many microfacies. The distribution of reservoirs is mainly controlled by sedimentarycharacteristics,and parts are also related to other factors. The distributary channels of delta plains is main oil bearingsand-bodies. The Chang 6~1 is one of the main oil bearing stratas in the development of sand-bodies. The oil contentin the layer is mainly controlled by sedimentary microfacies,and it is also related to physical properties,structureand other factors.
出处
《河南科学》
2016年第3期378-382,共5页
Henan Science
基金
国家自然科学基金项目(41362007)
关键词
鄂尔多斯盆地
杨旗区
沉积微相
三角洲
控油性
Ordos Basin
Yangqi area
sedimentary microfacies
delta facies
oil control
