大庆长垣以西地区中部油层组合次生孔隙研究A STUDY ON SECONDARY PORES OF MEDIUM COMBINATION FORMATION TO THE WEST OF DAQING PLACANTICLINE
王成,邵红梅
Wang Cheng; Shao Hongmei(E&D Research Institute of Daqing Petroleum Administative Bureau;
摘要(Abstract)：
通过对大庆长垣以西中部油层组合铸体薄片观察、干酪根降解产酸及地层水中有机酸分析和岩心溶蚀实验研究后认为： 龙虎泡和他拉哈地区中部油层组合形成次生孔隙的条件优越， 砂岩次生孔隙占总面孔率的３０％ ～４０ ％ ， 是松辽盆地新的次生孔隙发育带。有机酸以乙酸为主， 在地层水中的含量可达２ ０６０ｍｇ／Ｌ。探讨了有机酸对长石的溶蚀过程， 得出干酪根产酸期地层水的渗流方式决定了次生孔隙的分布， 次生孔隙发育的地区同时也是油气运移和聚集最有利地区的结论。
This paper observes the cast body slice of the medium combination formation to the west of Daqing placanticline, studies the analytic data of kerogen degragation producing acid and organic acid in formation water and the experiment of core solution and erosion and suggests that the medium combination formation of Longhupao and Talaha area has a nice condition for the formation of secondary pores. The secondary pores of sandstone account for 30%～40% of the total areal porosity, being a new development zone of secondary pores in Songliao Basin. Organic acid is mainly acetic acid, accounting for 2060mg/L in formation water. By studying the process of organic acid solution and erosion feldspar, this paper concludes that the percolation manner of formation water during the period of kerogen producing acid determines the distribution of secondary pores, and that the area where secondary pores grow is the best area for hydrocarbon migration and accumulation.
关键词(KeyWords)：
次生孔隙;有机酸;溶蚀;面孔率;孔隙类型;渗流方式
Secondary pores,Organic acid,Solution and erosion,Areal porosity,Pore type,Percolation manner
基金项目(Foundation):
作者(Authors):
王成,邵红梅
Wang Cheng; Shao Hongmei(E&D Research Institute of Daqing Petroleum Administative Bureau;
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