准噶尔盆地车排子凸起石炭系构造特征与油气富集规律  

Carboniferous structural characteristics and hydrocarbon accumulation regularity of Chepaizi Uplift in Junggar Basin

作　　者：陈鹏 武小宁 林煜 钟厚财 张洁 黄友华 岳纹 冷平 CHEN Peng;WU Xiaoning;LIN Yu;ZHONG Houcai;ZHANG Jie;HUANG Youhua;YUEWen;LENG Ping(Urumqi Branch,Geophysical Institute,BGP,CNPC,Urumqi,830016,China;Research Institute of Exploration and Development,PetroChina Xinjiang Oilfield Company,Urumqi 830013,China)

机构地区：[1]中国石油集团东方地球物理公司研究院乌鲁木齐分院,乌鲁木齐830016 [2]中国石油新疆油田公司勘探开发研究院,乌鲁木齐830013

出　　处：《岩性油气藏》2025年第1期68-77,共10页Lithologic Reservoirs

基　　金：中国石油集团油气新能源公司科技项目“新区新领域综合研究”(编号:2023YQX10111)资助。

摘　　要：准噶尔盆地车排子凸起具备双源供烃的有利成藏条件,勘探程度低,潜力大。依托新采集的三维和重处理的二维地震资料,通过精细构造解释,明确了该区的构造特征与油气富集规律。研究结果表明:①受晚石炭世—早二叠世4条北西向逆冲推覆断裂和早石炭世多条南北向断裂控制,车排子凸起石炭系自南向北依次分为南部、中部、北部3个条带,东西向分为3个台阶,东翼二台阶和西翼艾卡断裂上盘埋藏浅,紧邻生烃凹槽,为最有利的成藏部位。②研究区北西—南东向断裂切割南北向断裂形成的一系列断块控制了石炭系油气的分布,具有断块控藏的特征。③在裂缝发育程度相当的情况下,储层质量是控制油气产量的关键要素,其中火山爆发相储层基质物性好,最利于油气的富集。④沙门子断裂、车排子断裂、车排子南断裂、艾卡断裂等四大断裂上盘火山爆发相发育规模大,埋藏浅,与沙湾凹陷风城组和四棵树凹陷侏罗系2套烃源岩大跨度对接,成藏条件优越,是下一步勘探的有利区。The Chepaizi Uplift of Junggar Basin has favorable reservoir conditions for dual source hydrocarbon supply,with low exploration level and great potential.Based on the newly collected 3D and reprocessed 2D seismic data,the structural characteristics of the area were clarified through fine structural interpretation.The research results indicate that:(1)Controlled by four northwest thrust faults in the Late Carboniferous-Early Permian and multiple north-south faults in the Early Carboniferous,the Chepaizi Uplift Carboniferous system is divided into three zones from south to north:southern,central,three stripes in northern,and three steps in the east-west direction.The eastern second step and the western Aika fault are shallowly buried on the hanging plate,adjacent to the main source rock stove,and are the most favorable locations for reservoir formation.(2)A series of fault blocks formed by the cutting of north-south faults in the northwest southeast direction control the distribution of oil and gas in the Carboniferous system,and have the characteristics of fault block controlled reservoirs.(3)When the degree of fracture development is comparable,reservoir is a key factor in controlling oil and gas production,among which volcanic eruption facies reservoirs have good matrix properties,which are most conducive to oil and gas enrichment.(4)The four major faults,namely the Shamenzi Fault,Chepaizi Fault,Chepaizi South Fault,and Aika Fault,have developed explosive facies on the hanging wall,with shallow burial depth.Also connected to the two major source rocks of the Fengcheng Formation in the Shawan Depression and the Jurassic in the Sikeshu Depression over a large span,and have superior reservoir conditions,making them favorable areas for further exploration.

关 键 词：断块控藏 火山爆发相储层 逆冲推覆断裂 双源供烃 富集规律 石炭系 车排子凸起 准噶尔盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探] P618.13[天文地球—矿床学]