古龙南凹陷葡萄花油层储集空间及主控因素

发布时间：2018-05-13 18:33

本文选题：储集空间 + 主控因素　；参考：《西南石油大学学报(自然科学版)》2017年05期

【摘要】：针对松辽盆地古龙南地区葡萄花油层优质储层主控因素不清的问题,研究了古龙南地区葡萄花油层含油储层的岩石学特征、孔隙类型、面孔率特征及葡萄花优质储层孔隙发育的主要影响因素。研究结果表明,古龙南地区葡萄花含油储层发育原生粒间孔、粒间溶蚀扩大孔、粒内溶孔、晶间孔、微裂缝等多种孔隙,溶蚀孔隙占总孔隙的57.4%。不同沉积微相的孔隙类型及面孔率存在差异,席状砂的孔隙最发育,以碳酸盐胶溶孔和长石溶孔为主;水下分流河道砂体次之,河口坝砂体的原生孔隙和溶蚀孔面孔率分别为7.42%和5.33%;天然堤和决口扇砂体的孔隙相对最不发育。沉积作用、胶结作用和有机酸的溶蚀作用是控制古龙地区葡萄花油层优质储层发育的主要因素,刚性物质含量高、结构成熟度高有利于原生孔隙的发育和保存,长石、碳酸盐等易溶物质含量高有利于溶蚀孔发育,溶蚀作用是储层物性改善的最重要因素。
[Abstract]:The petrological characteristics and pore types of oil-bearing reservoirs in Gouhua reservoir in Gulongnan area of Songliao Basin are studied in this paper, in view of the unclear main controlling factors of the high quality reservoirs in the Gouhua reservoir, Songliao Basin. The characteristics of porosity and the main influencing factors of porosity development in high quality reservoirs of grape flower. The results show that primary intergranular pore, expanded intergranular dissolution pore, intragranular dissolved pore, intergranular pore, microfracture and so on are developed in Gouhua oil-bearing reservoir in Gulongnan area, and dissolution pores account for 57.4% of the total pores. The pore types and porosity of different sedimentary microfacies are different. The porosity of sheet sand is the most developed, mainly of carbonate gel solution pore and feldspar solution pore, and the subaqueous distributary channel sand body is the second. The primary porosity and dissolution porosity of estuarine bar sand body are 7.42% and 5.33%, respectively, and the porosity of natural dike and crevasse fan sand body is the least developed. Sedimentation, cementation and dissolution of organic acids are the main factors controlling the development of high quality reservoir of Grape flower reservoir in Gulong area. High content of rigid material and high maturity of structure are conducive to the development and preservation of primary pores, feldspar, and feldspar. The high content of soluble materials such as carbonate is beneficial to the development of dissolution pores, and the dissolution is the most important factor for the improvement of reservoir physical properties.
【作者单位】：中国石油大庆油田有限责任公司第九采油厂;中国石油大庆钻探工程公司测井公司;
【基金】：国家自然科学基金(41202146)
【分类号】：P618.13

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