岩性油气藏 ›› 2023, Vol. 35 ›› Issue (4): 125–136.doi: 10.12108/yxyqc.20230412

• 地质勘探 • 上一篇    下一篇

准噶尔盆地阜东斜坡石炭系有利岩相预测及勘探方向

武小宁, 邓勇, 林煜, 钟厚财, 康晓宁, 汪钰婷, 屈琳   

  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
  • 收稿日期:2022-07-08 修回日期:2022-08-08 出版日期:2023-07-01 发布日期:2023-07-01
  • 第一作者:武小宁(1988-),男,硕士,高级工程师,主要从事油气勘探地震地质综合研究工作。地址:(830016) 新疆乌鲁木齐市新市区迎宾北一路27号。Email:wuxiaoning01@cnpc.com.cn。
  • 基金资助:
    中国石油集团东方地球物理公司青年基金项目“深层火山岩五维地震精细表征技术研究与应用”(编号:11-08-2022)资助。

Prediction of favorable lithofacies and exploration direction of Carboniferous in Fudong slope,Junggar Basin

WU Xiaoning, DENG Yong, LIN Yu, ZHONG Houcai, KANG Xiaoning, WANG Yuting, QU Lin   

  1. Urumqi Branch of BGP Inc., CNPC, Urumqi 830016, China
  • Received:2022-07-08 Revised:2022-08-08 Online:2023-07-01 Published:2023-07-01

摘要: 通过岩心、测井和地震相分析,对准噶尔盆地阜东斜坡石炭系进行了岩相划分和火山岩分布预测,并指出有利勘探方向。研究结果表明: ①准噶尔盆地阜东斜坡石炭系发育5种岩相:火山通道相、爆发相、溢流相、泥质沉凝灰岩相、沉火山碎屑岩相,其中爆发相和溢流相为有利储集相。②研究区火山通道相在地震上表现为中低频、中强振幅、杂乱漏斗状或柱状反射,爆发相为中低频、中弱振幅、杂乱丘状反射,溢流相为低频、强振幅、连续反射,泥质沉凝灰岩相为低频、中强振幅、连续反射,沉火山碎屑岩相为中频、中强振幅、连续反射。③研究区松喀尔苏组b段溢流相主要分布在东南部、XQ11井北部及XQ17—XQ11井一线西侧,松喀尔苏组a段爆发相主要分布在西泉鼻隆主体部位。④研究区西泉鼻隆部位发育大规模的爆发相和溢流相,且紧邻石炭系生烃中心,裂缝发育,成藏条件优越,是天然气勘探的有利区。

关键词: 火山岩, 岩相划分, 地震相, 爆发相, 溢流相, 裂缝, 石炭系, 阜东斜坡, 准噶尔盆地

Abstract: Based on the analysis of cores,logging and seismic facies,the lithofacies of Carboniferous in Fudong slope of Junggar Basin was divided and the distribution of volcanic rocks was predicted,and the favorable exploration direction was pointed out. The results show that: (1)There are five lithofacies of Carboniferous developed in Fudong slope: volcanic vent facies,explosive facies,overflow facies,argillaceous tuff facies,sedimentary pyroclastic facies,among which the explosive facies and overflow facies are favorable reservoir facies.(2)The volcanic vent facies in the study area is characterized by medium-low frequency,medium-strong amplitude,disordered funnel-shaped or columnar reflection, the explosive facies is characterized by medium-low frequency, mediumweak amplitude and disordered mound reflection,the overflow facies is characterized by low frequency,strong amplitude and continuous reflection,the argillaceous tuff facies is characterized by low frequency,mediumstrong amplitude and continuous reflection,and the sedimentary pyroclastic facies is characterized by medium frequency,medium-strong amplitude and continuous reflection.(3)The overflow facies of section b of Songkaersu Formation is mainly distributed in the southeast of the study area,the north of well XQ11 and the west of well XQ17 to XQ11,and the explosive facies of section a of Songkaersu Formation is mainly distributed in the main part of Xiquan nose-uplift.(4)Explosive facies and overflow facies are developed on a large scale in Xiquan nose-uplift of the study area,and they are close to hydrocarbon generation center of Carboniferous,with developed fractures and superior reservoir accumulation conditions, so it is a favorable area for natural gas exploration.

Key words: volcanic rock, lithofacies division, seismic facies, explosive facies, overflow facie, fracture, Carboniferous, Fudong slope, Junggar Basin

中图分类号: 

  • TE122.2
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