吐鲁番-哈密盆地现今地温与油气关系研究  

RESEARCH ON THE RELATIONS BETWEEN PRESENT TEMPERATURE AND OIL-GAS GENERATION IN TULUFAN HAMI BASIN

作　　者：张世焕 任战利[2] 马团校[2] 王武和 

机构地区：[1]中国石油吐哈油田分公司研究院,哈密839009 [2]西北大学地质系,西安710069

出　　处：《地质科学》2000年第4期432-440,共9页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：石油天然气总公司"九五"攻关项目资助!(编号:970207-32(1) )

摘　　要：通过大量的地层测温资料综合分析确定了吐鲁番 -哈密盆地不同构造单元的现今地温梯度及大地热流值 ,该盆地 (以下简称吐哈盆地 )现今地温梯度为 2 .50℃ /1 0 0 m,大地热流值为 47.8m W/m2 ,现今地温梯度及大地热流值分布具有东高西低的特点。吐哈盆地现今地温梯度及大地热流值高于塔里木盆地及准噶尔盆地 ,现今地温场受地壳厚度、基底结构及盆地构造的控制。吐哈盆地现今地温对烃源岩的油气生成有重要控制作用 ,台北凹陷属持续埋藏增温型凹陷 ,烃源岩现今仍处于成油高峰期。哈密坳陷、托克逊凹陷部分地区烃源岩古地温高于今地温 。Based on the comprehensive analyses of most data on stratigraphic temperature measurements, present geothermal gradient and heat flow of different units in the Tulufan Hami basin were detemined. The present geothermal gradient is 2.50℃/100 m and the heat flow value is 47.8mW/m 2 in the basin. The geothermal gradient and heat flow is higher in the east and lower in the west respectively. The geothermal gradient and heat flow in the Tulufan Hami basin, which is higher than that of the Tarim basin and the Junggar basin, controlled by the following factors: crust thickness, basement topography and basin structure. Present temperature is an important control on oil gas generation of source rocks. The Taibei depression belongs to increasing temperature depression which is continuing burial, source rocks are on high stage of oil generation. In the Hami deprssiion and parts of Tuokexun depression the paleotemperature of source rocks is higher than that in the present. It was paleotemperature other than present temperature that controlled the oil generation.

关 键 词：吐鲁番-哈密盆地 地温 地温梯度 油气生成 

分 类 号：P618.130.1[天文地球—矿床学]