油气地质与采收率2011，Vol.18Issue(5)：6-8,30,4.
准噶尔盆地南缘安集海河组砂岩碳酸盐胶结物特征
摘要
Abstract
Carbonate cementation is the most important type of cementation for sandstone reservoir of the Anjihaihe formation Palaeozoic in the south of Junggar Basin. The distribution of calcite cement has great influence on reservoir characteristics. The results of cement generation, fluid inclusion homogenization temperature inclusion, and O/C isotope analysis prove that the main type of carbonate cement is ferrous calcite, most of the calcite cements are formed in the late diagenesis stage under high temperature (85 to 120 °C ). Stable-isotopic composition of most carbonate cements (Δ13c PDB -10‰ to -3‰,δ18 OODB-15‰ to -10‰) suggests that calcites are intimately related to the organic evolution and fluid activities. The depth intervals of secondary porosity zones are in accordance with the depth ranges of apparent positive shift of the Δ118opdb value of carbonate cements in Anjihaihe formation. The calcite cement is mainly filled in the intergranular pores, which leads to a great decrease of the effective porosity.关键词
碳酸盐胶结物/碳氧同位素/古近系/溶蚀作用/准噶尔盆地南缘Key words
calcite cement/carbon and oxygen isotope/Paleogene/corrosion/south Junggar Basin分类
能源科技引用本文复制引用
张立强,李秀国..准噶尔盆地南缘安集海河组砂岩碳酸盐胶结物特征[J].油气地质与采收率,2011,18(5):6-8,30,4.基金项目
中央高校基本科研业务费专项资金项目(09CX04008A),国家重点基础研究发展计划"973"课题"中国西部叠合盆地深部油气复合成藏机制与富集规律"(2011CB201105). （09CX04008A）
