摘要
以沉积学基本原理和方法为指导,通过岩心观察,结合测井曲线特征和地震反射特征进行综合分析,探讨了涠洲10-3油田及围区流沙港组三段Ⅳ油组(El43)沉积相类型及分布特征。研究表明:El43发育2个中期旋回MSC1和MSC2;MSC1沉积时期,研究区北部发育5个冲积扇体,南部发育3个冲积扇体,在中部扇间漫流沉积背景上零星分布一些非水道化砂质碎屑流沉积;MSC2沉积时期,研究区北部冲积扇体减少至3个,而南部仍发育有3个冲积扇体,但扇体总面积较MSC1沉积时期有所增加,在中部发育的非水道化砂质碎屑流不规则体也较MSC1沉积时期有所增加;区内扇中砂砾岩体是有利的油气储集相带。
The sedimentary type and distribution of WZ 10-3Oilfield and El 4 3in the surrounding areas were discussed. Study showed that 2mid-term cycles,such as MSC1and MSC2were developed in El 4 3.In the sedimentary period of MSC1,5alluvial fans were developed in the north of the studied area,3alluvial fans were developed in the south. Some non-channel sandy debris flow deposits were sporadically developed on the background of sheet deposit between the middle fans.In sedimentary period of MSC2,the alluvial fans were deducted to 3in the north of studied area,while 3alluvial fans were still developed in the south,but the total area of fans was slightly raised compared with MSC1.The number of sandy debris flow irregularities developed in the mid fan was slightly raised compared with MSC1.Mid-fan glutenite bodies are the favorable oil and gas reservoir facies belts.
出处
《石油天然气学报》
CAS
CSCD
2014年第4期13-20,4,共8页
Journal of Oil and Gas Technology
关键词
涠洲10-3油田
沉积相
冲积扇
砂质碎屑流
沉积特征
WZ 10-3Oilfield
sedimentary facies
alluvial fan
sandy debris flow
sedimentary feature
