新疆石油地质 ›› 1998, Vol. 19 ›› Issue (4): 303-307.

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吐哈盆地扇三角洲沉积特征及油气意义

张文朝, 赵岩, 李胜明, 常亮, 谭云冬   

  1. 华北石油管理局 河北任丘 062552
  • 收稿日期:1998-03-03 出版日期:1998-08-01 发布日期:2020-09-19
  • 作者简介:张文朝:高级工程师 石油地质

SEDIMENTARY CHARACTERISTICS AND HYDROCARBON-BEARING SIGNIFICANCEOF FAN DELTA IN TURPAN-HAMI BASIN

Zhang Wenchao, Zhao Yan, Li Shengming, Zheng Xian, Tan Yundong   

  1. Research Institute of Exploration and Development, North China Petroleum Administration Bureau, Renqiu, Hebei 062552
  • Received:1998-03-03 Online:1998-08-01 Published:2020-09-19
  • About author:Zhang Wenchao, Senior Engineer, Petroleum Geology

摘要: 根据大量钻井剖面和地面露头的岩性、电性特征、沉积构造、岩石组构和含油性等资料综合分析, 认为吐哈盆地北部的砂砾岩储集层属扇三角洲成因, 具有近物源、粗碎屑、窄相带和低成分成熟度等特点, 存在以牵引流为主的沉积构造, 发育有扇三角洲平原、扇三角洲前缘、前扇三角洲等三个亚相及九个微相, 并建立了相模式。指出扇三角洲平原辫状河道和扇三角洲前缘水下河道具有良好的储集性能和成藏条件, 是本区油气勘探的重要领域。

关键词: 吐鲁番盆地, 哈密盆地, 冲积扇, 三角洲, 沉积特征, 沉积模式, 油气远景

Abstract: Based on comprehensive analyses of lithology, electrical property, sedimentary structure, rock texture and oil-bearing characteristics of borehole section and surface outcrop, it is considered that sandy conglomerate reservoir in northern Turpan-Hami basin is of fan-delta origin, which is characterized by close provenance, coarse debris, shallow facies belt and low composition maturity.The sediments are dominated by drag flow.It is subdivided into three subfacies (fan-delta plain, fan-delta front and profan-delta)and nine microfacies.Facies model was established.It is suggested that braided channel of fan-delta plain and underwater channel of fan-delta front possess better reservoir quality and entrapment condition, thereby the target for oil and gas exploration in this area.

Key words: Turpan basin, Hami basin, Alluvial fan, Delta, Sedimentary characteristics, Sedimentary model