【摘要】 琼东南盆地的地温梯度有两个特点:一是靠近①号断裂带地温梯度高。二是崖13-1气田气层上、下的地温梯度大,其平均梯度为4.17℃/100 m,异常段可达10℃/100m。镜质体反射率的变化规律与温度一致。热模拟表明,崖13-1气田热异常的成因主要受自西向东的高温流体流动的影响。更多还原

【Abstract】 Two thermal features are observed in the Qiongdongnan basin:（1） the thermal gradients are higher a- long the No.1 fault zone than those of other area in the basin;and （2） anomalously high gradients （10℃/ 100 m） exist both above and below the gas resevoir zone of the Yacheng 13-1 gasfield,whereas they appear normal above the zone of the field （4.17℃/100m in average）.The temperature anomalies are accompa- nied by higher maturation of organic matter in the same zone.Reconstruction of thermal history of the field indicates that the anomalies are caused by high temperature fluid,which migrate from the west to the east, increasing the temperature and R₀ abruptly in the gasfield.更多还原