摘要
胜坨油田沙二段8砂组主要为辫状河三角洲河口坝沉积砂体,通过沉积物理模拟试验方法揭示了河口坝内部构型特征,并对试验条件下的单一河口坝识别标志进行了分析研究。试验结果表明,单一河口坝识别可以从横、纵2种剖面进行分析,横剖面上主要以河口坝的叠置关系作为识别标志,纵剖面上根据粒序特征、细粒沉积层以及前三角洲泥的厚度变化特征进行识别。试验得到的单一河口坝识别标志可以为井下河口坝的识别提供参考。
Es28th sand group in Shengtuo Oilfield is the typical braided river delta deposition.Through physical simulation,this paper reveals internal architecture of mouth bar and analyzes a single debouch bar identification markers under the conditions of physical simulation,providing theoretical foundation for production practice to some extent.Experimental results show that a single debouch bar can be researched in cross section and vertical section.The stacking pattern of mouth bar can be served as identification markers in cross section profile,according to the grain sequence characteristics,fine grained sediments and the thickness of prodelta mudstones,single mouth bar can be identified from vertical section.
出处
《长江大学学报（自科版）（上旬）》
CAS
2014年第11期32-34,4,共4页
JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG
关键词
辫状河三角洲
沉积物理模拟
单一河口坝
识别标志
braided river delta
physical simulation
single debouch bar
identification markers
