大民屯凹陷超压演化的多因素耦合-石油勘探与开发.pdfVIP

　　　　　　 40 2006 2 　　　　 　　　　PET ROLEUM EXPLORATION AND DEVELOPMENT 　　　　　　　Vol. 33　No . 1　 :1000-0747(2006)0-1 004-0 04 史建南, 郝芳, 姜建群 (中国石油大学(北京)石油天然气成藏机理教育部重点实验室) :国家杰出青年科学基金;教育部重大科技项目(10419) :辽 坳陷大民屯凹陷的超压很发育。大民屯凹陷的超压属于典型的动态超压系统, 是“生压速率或生压强度”大于 “泄压速率或泄压强度”的结果,“生压”过程终止后超压逐渐消失。在分析构造沉降史、沉积埋藏史、热史及生烃史的基础 上, 模拟了剩余压力的演化过程, 讨论了超压发育和演化的多因素耦合关系, 认为压实不均衡和生烃作用分别是大民屯凹 陷超压发育、演化不同阶段的主控因素。 图5 参29 :大民屯凹陷;动态超压;耦合;成因机 :TE122　　　:A Multiple-factor coupling of overpressure evolution in the Damintun Sag SHI Jian-nan, HAO Fang, JIANG Jian-qun K ey Labora tory f or Hy drocarbon A ccum u la tion Mechan is m, M inis try of E d uca tion, ( Ch ina Univ ers ity of P etro leum, B eij ing 102249, Ch ina ) Abstract:The over ressure states of sedimentary basin are multiform, and their evolutions are systematic. In the Damintun Sag, w hen the rate of over ressure generation was higher than the rate of over ressure release, over ressure built u , contrarily, with the termination of over ressure generation , over ressure diminished. The evolution of over ressure w as dynamic in nature. On the basis of analyzing burial histories, hydrocarbon generation histories and heat flow histories, the rocess of over ressure evolution was simulated. Multi l-e factor cou ling of the over ressure evolution suggests that the com action disequilibrium and hydrocarbon generation are the main controlling factors in different hases of the develo ment and evolution of over ressure in this region. Key words:Damintun Sag;dynamic over ressure;cou ling;formation mechanism , 、 0 [12, 14, 17] 。 　　 , 。 (7000m), ,