东营凹陷南斜坡东部沙四段新生古储垂向充注成藏定量描述研究

Research on quantitative description of new source rocks-old reservoir rocks vertical filling in eastern Sha-4 member of southern slope,Dongying depression

油气垂向充注是构造洼陷带重要的新生古储成藏方式,针对东营凹陷南斜坡东部沙四段,研究沙四上烃源岩对沙四下储层的垂向充注作用,应用统计学方法研究了地层压力系数与油气显示厚度的关系,采用声波测井方法计算地层压力异常与垂向充注深度,进一步研究了垂向充注平面分布范围,确定了油气压力控藏特征,明确了有利勘探指向,并形成了油气垂向充注定量描述方法,对新生古储式同类型油气藏勘探具有较好的借鉴意义。

Hydrocarbon vertical filling is an important new source rocks-old reservoir rocks hydrocarbon accumulation pattern in structural depression zone.Aiming at eastern Sha-4member of southern slope in Dongying depression,the vertical filling of Sha-4 upper member source rock on Sha-4lower member reservoir rock has been studied.By applying the statistical method,the research on the relation between formation pressure coefficient and hydrocarbon shows thickness has been carried out.With the acoustic logging method,the abnormal formation pressure and the vertical filling depth have been calculated,the vertical plane distribution range have been further studied,the pressure-controlled reservoir characteristics of hydrocarbon pressure have been determined,and the favorable exploration direction has been made clear,and the quantitative description method of hydrocarbon vertical filling has been formed,which provides goodreference for hydrocarbon accumulation of similar new source rocks-old reservoir rocks type.