北80井区烧房沟组蒙皂石特征及其对油层有效厚度的影响  

FEATURES OF NORTH 80 WELL BLOCK SHAO FANG GOU SMECTITE AND ITS IMPACT ON THE EFFECTIVE THICKNESS OF THE RESERVOIR

作　　者：张丽霞[1] 韩晓程 曾良雄[1] 刘丽[1] 许学龙[1] 

机构地区：[1]中国石油新疆油田分公司准东采油厂研究所,新疆阜康831511

出　　处：《新疆石油天然气》2015年第4期1-5,10,共5页Xinjiang Oil & Gas

摘　　要：北80井区烧房沟组砂岩中富含蒙皂石粘土矿物,是其最显著特征。蒙皂石为沉积时期粘土矿物,演化程很低。蒙皂石产状为孔隙——基底式充填。由于没有钾离子的提供,随着埋深加大,温度增加,蒙皂石都没能全部转化成伊利石,不符合粘土矿物一般热演化规律。烧房沟组主要是以大于5%的蒙皂石储层为主,而烧房沟组出油层段主要分布在蒙皂石含量小于5%的砂层中。试油井段中不出油的无效砂层多,有效的出油井段很少。因此,烧房沟组真正出油的有效层,需要结合薄片,特别是蒙皂石的含量和其它资料进行核算。North 80 wellblock Shao Fang Gou sandstone is rich in smectite clay minerals,which is its most prominent feature. Smectite is mineral clay in sedimentary period,the evolution of the process is low,and Smectite is of porosity- base type filling. In the absence of potassium ions provided,along with increasing depth,temperature increase,smectite failed to complete conversion of the illite clay minerals,which is generally incompatible with the evolution of heat. Shao Fang Gou group is of mainly more than 5% smectite reservoir,while Shao Fang Gou Reservior pay is mainly in area of smectite content of less than 5%. Many of the well test section is not invalid oil sands. Therefore,Shao Fang Gou truly effective pay requires a combination of sheets and other materials. Accurate location of effective pay will give a new anderstanding of the geological reserve calculation of North 80 wells block.

关 键 词：北80井区 烧房沟组 蒙皂石 油层有效厚度 

分 类 号：TE122.2[石油与天然气工程—油气勘探]