Study on hydrocarbon-generation evolution and prediction of favorable ezploration areas in Gucheng area of Tarim basin
Lower Ordovician and Cambrian are the good source rocks in Gucheng area compared to the other areas in the east of Tarim Basin. During the early of Caledonian movement after Upper Ordovician deposited, the source rocks of Lower Ordovician quickly went into gate of Hydrocarbon-generation and generated oil & gas. Because the time was so short and buried depth was so deep, the generated oil is not able to be expulsed from source rocks and they had been cracked to generated gas along with source rocks, which Hydrocarbon-generation didnt stop until the source rocks arrived at the dead line of natural gas generated. In the following tectonic movements, the buried depth and temperature didnt measure up to the conditions and the thermal evolution of source rocks had reached the dead line of natural gas generation after Caledonian movement, and no gas could generate. Used SPI, we conclude that the forming pattern of reservoirs is self-generating and self-preserving based on analysis of lithologic characteristics. The favorable exploration areas are located in Paleo-accumulation in the Palaeozoic group, especially dolomite reservoir in Cambrian.
gucheng slope break petroleum system structural evolution self-generating and self-preserving
Lan Xiao-dong Zhu Yan-ming Ran Qi-gui Cheng Hong-gang Zhu Chang-jian
School of Resource and Earth Science, China University of Mining & Technology, Xuzhou 221008, China Lang fang Branch of Research Institute of Petroleum Exploration & Development, PetroChina, Langfang Tarim Oilfields Company, Kuler 841000, China
国际会议
The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)
徐州
英文
1-6
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）