六盘山盆地白垩系烃源岩发育特征与勘探方向  

Characteristics of the cretaceous source rocks and prospecting targets in Liupanshan basin

作　　者：王军[1] 王坤[2] 崔红庄[1] 王金铎[1] 赵海华[1] 陈金燕[1] 

机构地区：[1]中国石化集团胜利油田分公司西部新区研究院,山东东营257015 [2]中国石油勘探开发研究院,北京100083

出　　处：《西安科技大学学报》2014年第6期724-729,共6页Journal of Xi’an University of Science and Technology

基　　金：国家科技重大专项"大型油气田及煤层气开发"(2011ZX05002-001)

摘　　要：在野外实测地层剖面、钻井资料和二维地震资料解释的基础上,结合野外露头和钻井取心岩样的地球化学资料,总结分析了六盘山盆地白垩系的烃源岩发育特征,研究认为:K1l组暗色泥岩发育程度低,单层厚度薄,有机质丰度低但已达成熟阶段;K1n,K1m沉积厚度较K1l薄,暗色泥岩发育程度高,单层厚度厚,有机质丰度高,处于低成熟阶段。利用生物标志化合物对C1,C2井原油、露头沥青与白垩系烃源岩进行了油源对比分析,认为K1m与K1l烃源岩都发生过油气生成和运移,而K1l烃源岩为目前最现实的烃源岩;结合探井钻探效果分析,认为六盘山盆地油气勘探应以寻找靠近生烃中心的断裂发育区和构造圈闭为主。On the basis of field survey stratigraphic section, drilling data and 2D seismic data interpretation, combined with outcrop coring and drilling rock sample geochemical data, analyzed the characteristics of hydrocarbon source rocks of Cretaceous in Liupanshan Basin：K_ll formation less develops dark mudstone with thin single layer,which have low content but mature organic material. K_1 n and K_1 m formations which are thinner than K11 but well develop dark mudstone with thicker layers than K_1l, the organic contents are high but the maturity are low. Oil-source correlation between oil in well C_1 , C_2 and outcrop asphalt and Cretaceous source rock show that Klm and K1L formation occurred generation and migration of oil while the K1l is the most practical source rock, Based on the analysis of drilling, it sug- gests that oil prospect should focus on the fault-developing area and anticline traps in hydrocarbon generation center.

关 键 词：六盘山盆地 白垩系 烃源岩 勘探方向 

分 类 号：TE112.1[石油与天然气工程—油气勘探]