古地理学报Issue(1)：107-118,12.DOI:10.7605/gdlxb.2015.01.009
河南省南襄盆地泌阳凹陷古近系核桃园组湖相页岩油储集层特征
Reservoir characteristics of lacustrine shale oil of the Paleogene Hetaoyuan Formation in Biyang sag of Nanxiang Basin,Henan Province
摘要
Abstract
Although high production oil has been achieved from continental shale of the Paleogene Hetaoyuan Formation by using large-scale hydraulic fracturing,less systematical research has been carried out on reservoir characteristics of the lacustrine shale in Biyang sag,Nanxiang Basin.In this paper,by use of thin sections and whole rock X-ray diffraction analyses,combining with the mineral composition fea-ture of continental shale,the lacustrine shale oil in Biyang sag can be divided into massive mudstone, laminated argillaceous shale, laminated silty shale, laminated limestone shale and laminated dolomitic shale.With the photos taken by argon ion polishing high resolution scanning electron microscope (SEM), the reservoir characteristics in study area are concluded:(1 ) the main reservoir spaces include dissolution pore,intercrystal pore, intergranular pore, fracture, interlayer lamellation seam and macrostructure;(2) the pores are anisotropic;(3) mesopore is prior to micropore in study area,that is,the aperture size ranges from 0. 841 to 21 3. 34, nm with average in 4. 76, nm,a main peak between 2 to 3, nm and the second peak about 71 , nm.It is indicated that rock type is the main factor controlling reservoir space devel-opment,and the corrosion pore,intercrystal pore,organic pore and interlayer lamellation seam are main-ly developed in laminated limestone shale,which are beneficial to the shale oil accumulation.关键词
页岩油/储集空间类型/孔喉结构/湖相页岩/古近系/泌阳凹陷Key words
shale oil/reservoir type/pore throat structure/lacustrine shale/Paleogene/Biyang sag分类
天文与地球科学引用本文复制引用
章新文,王优先,王根林,朱颜,罗曦,陈希敏,贾艳雨..河南省南襄盆地泌阳凹陷古近系核桃园组湖相页岩油储集层特征[J].古地理学报,2015,(1):107-118,12.基金项目
中国石化科技部项目（编号P11081，P13106）资助 （）
