摘要
为了进一步评价哈山山前带的勘探潜力,明确有利勘探方向,从构造变形特征分析入手,重新认识了烃源岩展布范围,并结合断层、圈闭空间配置关系预测了有利勘探目标。根据野外地质调查、地震剖面构造解释等手段识别了哈山地区发育的不整合面,并根据断裂-褶皱等构造变形特征分析,明确了哈山山前带的构造特征。认为哈山山前带整体上可划分为浅层和深层2套变形系统,并发育早二叠世弱挤压、晚二叠世—三叠纪强烈挤压、侏罗纪—白垩纪挤压拗陷、新生代走滑冲断4个阶段。在构造特征分析基础上,根据钻井成果及地震资料解释,利用平衡剖面原理恢复了二叠系风城组的原始沉积范围,比前人认识扩大了约1 000 km^2。并根据地球化学特征分析,整体评价风城组发育优质成熟烃源岩。根据烃源岩、断层、圈闭的空间配置关系分析了成藏主控因素,认为与油源断层相沟通的各类圈闭为有利的勘探目标。在此认识基础上,预测有利圈闭资源量达到亿吨级规模,大幅度提升了研究区的勘探潜力。
In order to further evaluate the exploration potential of the Hashan Piedmont zone and identify the favorable exploration direction, the structure and seismic interpretaliorl data, 1000 km2 larger Ihan the previous underslanding. It is eonsidered that high-quality source-roeks are developed in the Formation actording to the geochemical analysis. The key eorllroliing-faclors of hydrocarbon acemmdution are determined curding to the spatial configuration between source-rock, fauh and trap, which demonstrates that all kirlds of traps chat connect with oil-source faults are eb.araetexized as the favorahle exploration targets. It is predicted that the favorable trap resources will reach the scale of 100 million tons accnrding to this understanding, which greatly cnhances thc hydrocarbon exploration potential in this area.
出处
《特种油气藏》
CAS
CSCD
北大核心
2018年第1期20-24,共5页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"准噶尔盆地碎屑岩层系大中型油气田形成规律与勘探方向"(2011ZX05002-002)
中国石化股份有限公司科技攻关项目"哈山构造带成藏主控因素研究"(P13020)
关键词
哈山山前带
构造特征
烃源老
成藏模式
勘探潜力
Hashan piedmont zone
structure properties
source-rock
hydrocarbon accunmulation pattern
exploration potential
