古气候及其对碳酸盐岩滩坝发育的控制作用  

Palaeoclimate and its Controlling on the Development of Carbonate Beach and Bar

作　　者：王延章[1] 王新征[2] 石小虎[3] 肖淑明[2] 路达[4] 

机构地区：[1]中国石化胜利油田分公司胜利职业学院,山东东营257000 [2]中国石化股份胜利油田分公司现河采油厂,山东东营257001 [3]中国石油长庆油田分公司勘探开发研究院,陕西西安710021 [4]中国石油辽河油田勘探开发研究院,辽宁盘锦124010

出　　处：《西南石油大学学报（自然科学版）》2013年第5期15-22,共8页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家重大科技专项"渤海湾盆地东营凹陷勘探成熟区精细评价示范工程"(2008ZX05051)

摘　　要：利用孢粉法、古气候指数法、元素纵向变化分析法、元素比值法等方法对20口井300余块样品进行了分析,研究了沙四段古气候特征,在此基础上分析古气候对滩坝沉积的控制作用。沙四段对应于喜热植物和喜温植物均较发育的温热适中的温度环境,也对应于湿生植物和旱生植物均较发育的中等略偏潮湿的湿度环境。下部温度较低、相对较干旱,上部温度偏高、偏潮湿。滩坝发育于较干旱的温热适中的气候环境,较干燥的环境使蒸发作用较大,有利于化学岩的形成和碳酸盐岩滩坝的发育。同时,适宜的气候条件使腹足类和介形类古生物大量发育,有利于形成生物湖相碳酸盐岩。Using the cryptogam method, index method of palaeoclimate, element vertical alteration analysis method, element ratio method etc, we analyzed more than 300 examples in 20 wells and made a study of the palaeoclimate feature in Es4 sedimentation phase, and its influence on the development of carbonate beach and bar. The Es4 sedimentation phase corresponds to the temperate environment where both the philotherm and therophyte develops well. It also corresponds to the moisture environment where both the hydrophyte and xerophyte develops well. The lower part is of relatively low temperature and is relatively dry while the upper part is of relatively high temperature and is relatively damp. The carbonate beach and bar developing in the relatively arid area with moderate moisture since the relatively arid environment makes the evaporation stronger and is favorable for the chemical rock formation and carbonate beach and bar development. On the other hand, the suitable climate condition makes the palaeophyte gastropod and ostracodan develop in large quantity and is favorable for forming the biology carbonate rock in lake facies.

关 键 词：滩坝 古气候 控制作用 孢粉法 沙四段 

分 类 号：P618.130.2[天文地球—矿床学]