新疆石油地质 ›› 2008, Vol. 29 ›› Issue (2): 152-154.

• 油气勘探 • 上一篇    下一篇

酒西盆地深部热液活动与油气成因

石兰亭1,3, 王斌婷2,3, 郑荣才1, 张景廉3   

  1. 1.成都理工大学油气藏地质及开发工程国家重点实验室, 成都610059;
    2.中国地质大学, 北京100083;
    3.中国石油石油勘探开发科学研究院西北分院, 兰州730020
  • 收稿日期:2007-05-31 发布日期:2020-08-17
  • 作者简介:石兰亭(1963-), 男, 河南禹州人, 高级工程师, 在读博士研究生, 石油地质,(Tel)0931-8686135(E-mail)lanzhow_slt@163.com.
  • 基金资助:
    中国石油天然气股份有限公司勘探与生产分公司勘探前期评价项目, 酒西盆地石油地质再认识及勘探目标选择(KTQQ-2005-017)资助。

Deep Hydrothermal Activityvs Petroleum Origin in Jiuxi Basin

SHI Lan-ting1,3, WANG Bin-ting2,3, ZHENG Rong-cai1, ZHANG Jing-lian3   

  1. 1. State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059,China;
    2. China University of Geosciences, Beijing 100083, China;
    3. Northwest Branch, Research Institute of Petroleum Exploration and Development, PetroChina, Lanzhou, Gansu 730020, China
  • Received:2007-05-31 Published:2020-08-17

摘要: 酒西盆地的玉门油田开采几十年而不枯竭, 近年又有柳沟庄-窟窿山油田的发现, 其油气成因引起关注。研究表明, 酒西盆地青西凹陷下白垩统下沟组广泛发育白云岩、钠长石、伊利石及大量热液金属矿物, 这是一种深部热液——富碱、富烃地幔流体的活动。地学断面的综合研究揭示了酒西盆地深部中地壳有一低速高导层。铅同位素地球化学填图显示了酒西盆地位于铅同位素地球化学急变带。上述地质、地球物理、地球化学特征表明, 酒西盆地为壳-幔强相互作用的地区, 其油气可能是无机成因。根据这一思路, 酒西盆地的油气勘探前景将更好!

关键词: 酒西盆地, 热液作用, 油气生成, 地幔, 成因

Abstract: Following the development of several decades, Yumen field in Jiuxi basin has not been depleted. Recently, Liugouzhuang-Kulongshan field is discovered and its origin of petroleum causes concerns. The study shows that there exist dolomite, albite, illite and lots of metal hydrothermal minerals in Xiagou formation of Lower Cretaceous in Qingxi sag of Jiuxi basin. It is a deep hydrothermal activity with abundant alkali and hydrocarbon mantle fluid. The geosciences transect research reveals that a low-velocity and highconductive layer occurs in the mid-crust of Jiuxi basin. The Pb isotopic geochemical mapping suggests that Jiuxi basin is located on highly changing zone in Pb isotopic geochemistry. These features indicate that Jiuxi basin is an area with strong crust-mantle interaction, and its petroleum could be originated in inorganic origin. Such an idea means that Jiuxi basin will be better prospective in petroleum exploration in the future.

Key words: Jiuxi basin, hydrothermalism, petroleum origin, mantle, mid-crust

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