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作 者:廖晓[1] 王震亮[1] 范昌育[1] 于常青[2] LIAO Xiao;WANG Zhenliang;FAN Changyu;YU Changqing(State Key Laboratory of Continental Dynamics/Department of Geology,Northwest University,Xi′an 710069,China;The Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)
机构地区:[1]西北大学大陆动力学国家重点实验室/地质学系,陕西西安710069 [2]中国地质科学院地质研究所,北京100037
出 处:《西北大学学报(自然科学版)》2018年第2期261-267,共7页Journal of Northwest University(Natural Science Edition)
基 金:国家自然科学基金资助项目(41672121);中国地质调查局调查基金资助项目(12120114009701)
摘 要:综合考虑烃源岩沉积时的内在属性和沉积之后的外在演化两个方面,筛选烃源岩厚度、总有机碳含量及镜质体反射率评价参数,并提出等效有机碳厚度概念,利用等效有机碳厚度和镜质体反射率参数的交会叠合,建立了低勘探程度地区烃源岩综合评价方法。运用此方法对塔里木盆地西南拗陷石炭系烃源岩进行综合评价,预测最有利烃源岩位于研究区的乌恰—喀什—阿克陶和莎车—泽普—叶城一带。该方法预测的有利烃源岩区域与目前的勘探现状吻合,显示了此评价方法在低勘探程度地区的可行性。The low-exploration area is important for petroleum exploration in future with abundant oil and gas resources.And the source rock plays a critical role in those area.In this paper,given that the intrinsic property and external evolution of source rock,several parameters are chosen that are closely related with source rock,such as thickness,total content of organic carbon and vitrinite reflectance.The concept of equivalently organic carbon thickness was proposed firstly.And a comprehensive evaluation method of source rock in low-exploration area is built based on the intersection of equivalently organic carbon thickness and vitrinite reflectance.A case study on the major source rock of Carboniferous mudstone in southwest sag of Tarim Basin shows that the best source rock lies in the Wuqia-Kashi-Aketao and Shache-Zepu-Yecheng region.The best source rock predicted by this method basically coincides with the present exploration result.Moreover,the new comprehensive evaluation method was proved of great reliability.
关 键 词:塔西南拗陷 镜质体反射率 等效有机碳厚度 综合评价 烃源岩 低勘探程度地区
分 类 号:TE121[石油与天然气工程—油气勘探]
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