济阳坳陷桩海碳酸盐岩潜山构造演化及其对油气成藏的控制作用  

Structural evolution and its control to hydrocarbon accumulation of Zhuanghai carbonate buried hills,Jiyang Depression

作　　者：孙玮[1] 刘树根[1,2] 时华星[3] 宋明水[3] 徐春华[3] 何建军[1] 雍自权[1] 

机构地区：[1]成都理工大学,四川成都610059 [2]成都理工大学"油气藏地质及开发工程"国家重点实验室,四川成都610059 [3]中国石化股份胜利油田分公司,山东东营257001

出　　处：《油气地质与采收率》2008年第3期23-25,112,共3页Petroleum Geology and Recovery Efficiency

基　　金：国家重点基础研究发展计划"973"项目"中国海相碳酸盐岩层系油气富集机理与分布预测"(2005CB422106)

摘　　要：鉴于目前济阳坳陷桩海下古生界碳酸盐岩潜山已有油气井的发现,利用平衡剖面原理分析了潜山的形成演化,并划分为6个时期。古生代—中生代潜山经历了多期构造运动和长时期的抬升剥蚀,受风化侵蚀和大气淋滤作用的影响,岩溶作用广泛发育,形成了多套下古生界碳酸盐岩内幕储层。古近纪以来的拗陷期潜山上覆了巨厚的新生界,为潜山提供了油源和盖层条件。但由于碳酸盐岩储层的非均质性和构造的复杂性,制约了潜山油气的进一步勘探。通过产油井构造部位结合演化分析,发现断层带附近的高部位是潜山最有利的勘探区域。Oil and gas wells have been drilled successfully in Zhuanghai carbonate buried hills,Jiyang Depression. The formation and evo-lution of the Zhuanghai buried hills can be divided into six stages by principle of equilibrium profile. Palaeozoic and Mesozoic bur-ied hills underwent multi -stages tectogenesis that elevated and corroded in exfoliation for a long time. The karstification devel-oped widely under the effect of weathering corrosion and atmos-phere leaching. Several sets of inner reservoir developed in low Paleozoic carbonate. The buried hills were overlaid huge Cenozo-ic in the depression period since Neogene,and this provided oil source and cap rocks for the buried hills. Heterogeneity and structure complexity of the carbonate reservoir restricted the far-ther exploration of the buried hills. After analysis on structure position of productive oil wells and structural evolution,the most prospective areas in the buried hills are the high regions close to fault zones.

关 键 词：构造演化 下古生界 桩海碳酸盐岩潜山 济阳坳陷 

分 类 号：TE111.2[石油与天然气工程—油气勘探]