The Effect of the Complex Geothermal Field Based on the MultrStructure Evolution to Hydrocarbon Generation一一A Case of Tazhong Area in Tarim Basin
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摘要: 根据磷灰石裂变径迹分析（ＡＦＴＡ）及干酪根自由基浓度分析了塔里木盆地塔中地区单井的热历史，同时结合波动地质学分析的结果研究了其复杂的构造演化－沉积埋藏史，由此探讨了复杂构造运动对油气生成和油气藏形成的影响，表明多期构造运动一方面对油气藏会产生破坏作用，而另一方面却对延长生油层的生烃时间有利（即可以晚期生烃）。后期多次构造运动有利于烃源岩晚期、长期生烃。Abstract: The thermal history of a single well in Tazhong Area, Tarim basin, was investigated based on the a-petite fission track analysis(AFTA) and spin density of free radicals in kengen, at the same time, the complex evolution of structure and burial history were also studied combining the results of wave-geo-logical analysis. The effect of the complex structural movement to hydrocarbon generation and reservoirformation was discussed. The results of the study revealed that the repeatedly structural movements maydestroy the reservoir on the one hand, but may extend the interval of hydrocarbon generation on the oth-er hand. The repeatedly sturctural movements is favourable to the hydrocarbon generation of sourcerocks for long time and at various stages.
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Key words:
- geothermal field /
- hydrocarbon generation /
- Tarim basin
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[1] 1 Laslett G M and Green P P Duddy I R and Meadow A J W.Thermal annealing of fission track in apatite, Chemical Geolo-gy(Jsotope Geoscience Section).1987. 65 1-13.
2 Sweeney J J and A K Burnliam.Evaluati onof a simple Pmodel of vitritite reflectance on chemical kinetics based AAPG 1990,1559-1570 -
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