东濮凹陷现今地温场分布特征  

DISTRIBUTION OF PRESENT-DAY GEOTHERMAL FIELD IN THE DONGPU SAG

作　　者：刘丽[1] 任战利[1] 崔营滨[2] 张盛[2] 

机构地区：[1]西北大学地质学系大陆动力学国家重点实验室,西安710069 [2]中国石油化工股份有限公司胜利油田分公司地质科学研究院,山东东营257015

出　　处：《地质科学》2007年第4期787-794,共8页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家重点基础研究发展计划(973)项目(2003CB214605);中国煤成气成藏机制及经济开采基础研究项目(2002CB211704);长江学者和创新团队发展计划资助项目(IRT0559)

摘　　要：在9口井连续测温资料的基础上,对东濮凹陷现今地温场进行了研究。东濮凹陷的地温梯度代表值为34℃/km,平均大地热流值为58.4 mW/m2。现今地温场的展布主要受地质构造格局的控制,为北东—北北东向,与盆地构造走向一致,总体分布是相同层位东部次凹和西部次凹的地温高,中央隆起和西部斜坡带地温相对低。现今地温对烃源岩的油气生成有重要的控制作用,东部次凹和西部次凹的石炭-二叠系现今仍处于二次生烃阶段,是上古生界有利的二次生烃区。The present-day temperature of the Dongpu Sag in the southern Bohai Bay Basin was analyzed. Based on the temperature data derived from nine exploration wells, temperature gradient was calculated and the distribution of temperature was analyzed. The deputation result of temperature gradient was 34 ℃/km and the mean heat flow was 58.4 mW/mz^2. The distribution of present-day temperature, affected by the basemental structures, was northeast-striking ,which meant the higher and the lower temperatures in the depression and in the central uplift respectively. At the same horizon, the present-day temperature was an important controlling factor for oil-gas forming. The source rocks of Upper Paleozoic in the Eastern and Western Depressions were on the stage of secondary hydrocarbon generation, where might be a beneficial area of secondary hydrocarbon generation.

关 键 词：地温梯度 现今地温场 大地热流 东濮凹陷 

分 类 号：P314[天文地球—固体地球物理学]