摘要
结合塔里木库车前陆盆地的 10 9口井的地温数据 ,给出了库车盆地的地温场分布特征 .库车盆地各构造单元的平均地温梯度值为 18～ 2 8℃ km ,与我国其他大、中型沉积盆地相比 ,仍然偏低 .库车前陆盆地整体上是属于低温冷盆 ,山前带部位 ,依奇克里克、克拉苏和大宛齐等构造分区是低温冷盆中的高地温梯度带 ;从山前带由北向南 ,地温梯度逐渐降低 .在盆地的南部 ,地温梯度又存在明显差异 .总体上 ,地温梯度随深度的增加而降低 ,趋于一致 ,但在不同地质构造条件下其变化的速率不同 .在此基础上 ,进一步探讨地温梯度与盆地形成和构造演化的关系以及油气勘探意义 .
Based on the geo-temperature data of 109 wells of Kuqa foreland basin in the north flank of Tarim basin, the characteristics of the temperature field are studied. The average geo-temperature gradients in different regions of Kuqa basin are between 18℃/km and 28℃/km, which is lower than those in other middle and large scale basins in China, implying the cold Kuqa foreland basin. The distribution of geo-temperature gradient of Kuqa foreland basin can be described in detail as following: The mountain frontier belt, including Yiqikelike, Kelasu and Dawanqi areas, has relatively high geo-temperature gradient compared with other structural units of Kuqa. From the North to South of Kuqa, the geo-temperature gradient decreases gradually. At the South of Kuqa, the geo-temperature gradient is clearly different. In general, the geo-temperature gradient decreases with increasing depth, tending to be identical in deep. The decrease rate of the geo-temperature gradient is different in different tectonic settings. The relationship between geo-temperature gradient and formation and tectonic evolution of basin with hydrocarbon exploration are discussed further here.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第3期403-407,共5页
Chinese Journal of Geophysics
基金
国家重点基础研究发展规划项目 (G19990 4330 2 )
重点基金项目 ( 49832 0 40 )
国家"95"重点科技攻关项目 ( 99 -111)资助 .
