大庆石油地质与开发2018，Vol.37Issue(3)：37-42,6.DOI:10.19597/J.ISSN.1000-3754.201711012
渤海C地区中深层滩相储层特征与控制因素
MID-DEEP SHOAL RESERVOIR CHARACTERISTICS AND THEIR CONTROLLING FACTORS IN BOHAI AREA C
摘要
Abstract
Lake shoal facies carbonate rocks and dolomitic elastic rocks were discovered in the exploration of Member-1 of Shahejie Formation in Bohai Area C,with the help of the drilling,cores,thin section observation,element analyses and so on,the reservoir type,feature and controlling factors were studied.The results show that this member of the reservoir was mainly composed of the bioclastic-shoal bioclastic dolostone and gravel-beach dolomitic conglomerate,in a whole,the reservoirs belong to the middle-porosity and low-permeability ones,the physical properties are obviously controlled by different shoal facieses of sedimentary types;the carbonate basement and lake level change controls the development of different shoals of the reservoir,the dolomitization and organic acid dissolution have provided the favorable conditions for the preservation of the primary pores and the development of the secondary pores,the fractures caused by the tectonic activities can further improve the various types of the reservoir accumulating properties;the penecontemporaneous dolomitization and shallow burial one are the keys to the accumulation of the high-quality bioclastic-dolostone reservoirs,although the fractures of the dolomitic conglomerate are relatively well-developed,the dolomite and calcite are precipitated in the infiltration process of the formation water with rich HCO32-,many factures are infilled and the cementation degree is relatively higher;the quality of the bioclastic dolostone reservoir is higher than that of the dolomitic conglomerate,so it can be regarded as the favorable target of the further exploration and development in the area.关键词
滩相/生屑云岩/云质砾岩/储层特征/沙河街组/渤海Key words
shoal facies/bioclastic dolostone/dolomite/dolomitite/dolomitic conglomerate/reservoir characteristic/Shahejie Formation/Bohai分类
能源科技引用本文复制引用
许聘,官大勇..渤海C地区中深层滩相储层特征与控制因素[J].大庆石油地质与开发,2018,37(3):37-42,6.基金项目
“十三五”国家科技重大专项“中国近海富烃凹陷优选与有利勘探方向预测”(2016ZX05024-002). （2016ZX05024-002）
