新疆石油地质

新疆石油地质 ›› 1997, Vol. 18 ›› Issue (2): 165-169.

• 油藏工程 • 上一篇    下一篇

准噶尔盆地石西油田注空气二次采油方式探讨

关密生   

  1. 新疆石油管理局采油工艺研究院 克拉玛依 834000
  • 收稿日期:1996-10-25 出版日期:1997-06-01 发布日期:2021-01-18
  • 作者简介:关密生,工程师 油藏工程

SECONDARY RECOVERY BY AIR INJECTION IN SHIXI OILFIELD, JUNGGAR BASIN

Guan Misheng   

  1. Institute of Oilfield Production Technology, Xinjiang Petroleum Administration Bureau, Karamay 834000
  • Received:1996-10-25 Online:1997-06-01 Published:2021-01-18
  • About author:Guan Misheng, Engineer, Reservoir Engineering

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摘要： 针对石西油田的地质特征提出了可以采用注空气作为二次采油的方式。其基本原理是空气中所含21%的氧气与原油所含胶质体及沥青质之间发生放氧化反应,生成烟道气(85%的N2、15%的CO2),由于重力分异作用,在构造高点形成烟道气顶。因此,从本质上讲,注空气对高温压的轻质油油藏而言是间接的烟道气驱。石西油田石炭系油藏具备注空气形成人工气顶,并能达到重力驱油、混相驱替以及多种驱动效应的基本地质条件。

关键词: 准噶尔盆地, 石西油田, 石炭纪, 火山岩油气藏, 二次采油, 注空气, 重力驱动, 驱油效率

Abstract: With respect to the geologic features in Shixi oilfield the secondary recovery process by air injection is recommended. It has the following production mechanism: the oxidization reaction between the oxygen (21%) in the air and resin and asphaltane present in the oil produces the flue gas (85% N2 and 15% CO2) which forms the flue gas cap on the structural high due to the gravity differentiation. Therefore, for the high-temperature high-pressure light oil reservoirs, air injection is in essence an indirect flue gas flooding process.

Key words: Junggar basin, Shixi oilfield, Carboniferous, Volcanic reservoir, Secondary recovery, Air injection, Gravity flooding, 0il displacement eficiency