石油与天然气地质 ›› 2008, Vol. 29 ›› Issue (4): 471-478,501.doi: 10.11743/ogg20080409

• 油气成藏与评价 • 上一篇    下一篇

吐鲁番坳陷侏罗系地下水动力与油气成藏

楼章华1,2, 金爱民1,2, 李华明3, 张慧婷1,2   

  1. 1. 浙江大学, 水文与水资源工程研究所, 浙江, 杭州310028;
    2. 浙江大学, 海洋研究中心, 浙江, 杭州, 310028;
    3. 中国石油天然气股份有限公司, 吐哈油田分公司, 石油勘探开发研究院, 新疆, 哈密, 839009
  • 收稿日期:2008-04-07 出版日期:2008-08-24 发布日期:2012-01-16
  • 基金资助:

    "油气藏地质及开发工程"国家重点实验室项目(PLC200604);国家重点基础研究发展规划(973)项目(2005CB422107).

Groundwater hydrodynamics and hydrocarbon accumulation in the Jurassic of the Turpan Depression

Lou Zhanghua1,2, Jin Aimin1,2, Li Huaming3, Zhang Huiting1,2   

  1. 1. Institute of Hydrology and Water Resources Engineering, Zhe jiang University, Hangzhou, Zhejiang 310028, China;
    2. Ocean Research Center, Zhe jiang University, Hangzhou, Zhejiang 310028, China;
    3. Petroleum Exploration and Production Research Institute, PetroChina Turpan-Hami Oilfield Company, Hami, Xinjiang 839009, China
  • Received:2008-04-07 Online:2008-08-24 Published:2012-01-16

PDF (PC)

546

被引次数

5

摘要：

沉积盆地地下水动力场演化和地下水成因控制了地下水化学场的分布规律,盆地边缘大气水下渗淡化,凹陷中心泥岩压实排水淡化,越流泄水区浓缩。在离心流和向心流的流动过程中,地下水浓缩、盐化,在越流泄水区形成矿化度的相对高值区。泥岩压实离心流是沉积盆地油气运移的主要动力,在地下水的越流泄水过程中有利于大量的油气聚集;在泥岩压实离心流过程中,由于岩性、地层、断层等圈闭也使得部分油气在运移过程中聚集;在向心流的推进过程中,先前聚集的油气可能部分被破坏,另外也可能在特定的地质条件下形成水动力圈闭。

关键词: 地下水, 油田水, 水化学, 水动力, 油气成藏动力学, 吐鲁番坳陷

Abstract:

The evolution of groundwater hydrodynamic field and origin of groundwater in sedimentary basins control the distribution patterns of chemical field of ground water.At the margin of a basin,groundwater desalinates due to the downward infiltration of atmospheric water,while in the central depression,groundwater desalinates due to discharge from mudstone under compaction.In contrast,groundwater concentrates in bypassing discharge area.During centrifugal and endoeentric flow processes,groundwater concentrates and gets salinized,forming a relative high salinity zone in the bypassing discharge area.Centrifugal flow from mudstone compaction serves as the main driving force of hydrocarbon migration in sedimentary basins and provides a favorable environment for large scale hydrocarbon accumulation during the bypassing and discharging of ground water.Moreover,it also can contribute some hydrocarbons to the lithologic,stratigraphic,fault traps located on the pathway of hydrocarbon migration.The advancement of endocentric flow may destroy the earlier hydrocarbon pools and also possibly lead to the formation of hydrodynamic traps at specific geologic conditions.

Key words: ground water, oilfield water, water chemistry, hydrodynamics, hydrocarbon accumulation dynamics, Turpan Depression

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