阜康凹陷平地泉组烃源岩生排烃期分析  

Hydrocarbon Source-rock Expulsion Periods of Pingdiquan Formation of Fukang Sag

作　　者：况昊[1] 王振奇[1] 王琳霖[1] 付欢[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学)长江大学地球科学学院,湖北荆州434023

出　　处：《石油天然气学报》2012年第1期41-44,165,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2008ZX05030-003-01)

摘　　要：采用镜质体反射率为主、结合井温流体实测数值,联系重要地质事件综合分析阜康凹陷二叠纪以来的古地温场的演化特征;同时选取阜康凹陷的一个二维剖面,对阜康凹陷二叠系平地泉组烃源岩进行单井热演化史分析、二维剖面烃源岩热演化史分析和烃源岩平面热演化史研究。研究发现,阜康凹陷平地泉组古地温比现今地温高,呈直线带状对应关系;平地泉组烃源岩三叠纪早期开始生烃,到了侏罗纪早期进入生烃高峰。并非前人长期认为的三叠纪末开始生烃。The evolution features of Permian paleogeothermal temperature field were comprehensively analyzed in combination with the important geological events since Permian,wells located in uplifts,slop areas and depressions were analyzed with the method of vitrinite reflectance as well as measured data of well temperature.Meanwhile,based on the simulation of geothermal and burial history of Permian,single well thermal evolution history,2D profile and plane thermal evolution histories of source rocks were analyzed by using 2D profile in Fukang Depression for simulating the thermal evolution histories of source rocks of section in Pingdiquan Formation.The study shows that the paleogeotemperature is higher than that of current one,it is in linear strip,hydrocarbon is generated in early Triassic of Pingdiquan Formation,the peak of hydrocarbon generation is in the early period of Jurassic system.It is not as considered by previous study that hydrocarbon generation is started at the late stage of Triassic.

关 键 词：烃源岩 排烃史 古地温特征 二叠系 阜康凹陷 

分 类 号：P618.13[天文地球—矿床学]