Formation conditions of shale oil and gas in Bonan sub-sag,Jiyang Depression
Formation conditions of shale oil and gas in Bonan sub-sag,Jiyang Depression
复制标题
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
C. Sinopec
中科院分区：
文献类型：
--
作者：
C. Sinopec
通过丰富的地震、钻井、测井、矿物、地球化学和物性等资料，得出济阳坳陷渤南洼陷古近系沙一段、沙三下段和沙四上段页岩分布广、丰度高、类型好的结论有机质成熟度范围广，具有页岩油气大规模形成的物质基础，同时，粘土矿物含量低，脆性矿物含量高3套页岩中的碳酸盐岩（以碳酸盐岩为主）有利于页岩油气的开采，此外，页岩中的高压系数和不同的微孔隙、微裂缝的发育也有利于页岩油气的保存，根据油水饱和度数据，渤南洼陷沙三下段12 ~ 13层段上部是页岩油气勘探的有利层位。特别是层状泥质灰岩是最有利的勘探岩石类型。
Through abundant data of seism,drilling,logging,mineral,geochemistry and physical properties,it is concluded that the shale of Paleogene Es1,Lower Es3 and Upper Es4 in Bonan sub-sag,Jiyang Depression is characterized by wide distribution and high abundance,better types(mainly with type I and II) and wide maturity range of organic matter,with a material basis for the formation of shale oil and gas in a large scale.Meanwhile,the low content of clay mineral and high content of brittle mineral(mainly with carbonate) in the 3 sets of shale are favorable for the exploitation of shale oil and gas.In addition,the high pressure coefficient and the development of different micro-pores and micro-cracks in the shale are also favorable for the preservation of shale oil and gas,because the reticular storage system is easy to form under this condition.According to the oil and water saturation data,the upper of No.12 layer to upper of No.13 layer in the Lower Es3 formation are the favorable layers for shale oil and gas exploration in Bonan sub-sag because of their high oil and gas content in unit rock.Especially,as the most favorable rock type,the lamiated argillaceous limestone could be effectively explored.