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天然气地球科学

• 天然气地质学 • 上一篇    下一篇

南堡凹陷5号构造天然气赋存特征及主力气源分析

刚文哲，蒋雅丽，高岗，董月霞   

  1. 1．中国石油大学（北京）地球科学学院，北京 102249；
    2．中国石油天然气股份有限公司华北油田釆油四厂,河北 廊坊 065000；
    3．中国石油天然气股份有限公司冀东油田,河北 唐山 063004
  • 收稿日期:2014-11-03 修回日期:2014-12-25 出版日期:2015-05-10 发布日期:2015-05-10
  • 作者简介:刚文哲（1965-），男，陕西凤翔人，教授，博士生导师，主要从事油气地球化学与油气地质研究与教学工作. E-mail:gwz@cup.edu.cn.
  • 基金资助:

    国家科技重大专项（编号:2011ZX05006-006）资助.

Characteristics of the Natural Gas Occurrence and Analysis of the Main Gas Source in the No.5 Tectonic Zone of Nanpu Sag

  1. 1.College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China;
    2.The Fourth Oil Production Plant of PetroChina Huabei Oilfield Company,Langfang 065000,China;
    3.PetroChina Jidong Oilfield Company,Tangshan 063004,China
  • Received:2014-11-03 Revised:2014-12-25 Online:2015-05-10 Published:2015-05-10

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摘要：

通过地质和地球化学相结合的方法，对南堡5号构造天然气地球化学特征、成因类型分布以及天然气来源进行了精细研究，明确了南堡5号构造天然气的分布特征。南堡5号构造陆上北堡地区天然气主要分布在东营组，滩海地区天然气则主要分布在沙河街组。天然气主要为湿气，干气较少，以油溶气为主，凝析气层居次。不同地区的天然气类型不同，陆上北堡地区天然气主要以腐泥型为主，滩海地区天然气主要以腐殖型为主。腐泥型天然气主要分布于东营组，而腐殖型天然气则主要分布于沙河街组。通过地质和地球化学对比分析认为，南堡5号构造滩海地区腐殖型天然气及过渡型天然气主要来源于滩海地区沙三段气源岩，陆上北堡地区腐泥型天然气主要来源于北堡构造沙三段气源岩，即南堡5号构造天然气主力气源来自中深层的沙三段气源岩，以近源运聚为主。

关键词: 天然气, 赋存特征, 气源分析, 南堡凹陷

Abstract:

Based on geological and geochemical methods,geochemical characteristics of natural gas,distribution of genetic types and gas source were studied accurately,and the distribution characteristics of natural gas were identified in the No.5 tectonic zone of Nanpu Sag.The natural gas in the onshore Beipu zone mainly distributed in the Ed Fomation and the beach area in the Es Formation.The natural gas is dominated by wet gas with little amount of dry gas.It is mainly of oil-soluble gas,followed by condensate gas.The types of natural gas are not the same in different areas.The sapropelic natural gas mainly distributes in the Ed Formation in the onshore Beipu zone,while the humic gas distributes in the Es Formation in the beach area.By comparison with geological and geochemical analyses,the humic natural gas and the transited-type natural gas is mainly sourced from the Es3 Formation of beach area in the No.5 tectonic zone of Nanpu Sag,the sapropic natural gas in the onshore Beipu zone is mainly drived from the Es3 Formation of Beipu zone.In general,natural gas in the No.5 tectonic zone of Nanpu Sag are mainly sourced from the middle or deep source rocks of Es3 Formation.Natural gas uauslly migrates and accumulates near the source in the No.5 tectonic zone of Nanpu Sag.

Key words: Natrual gas, Occurrence characteristics, Gas source analysis, Nanpu Sag

中图分类号: 

  • TE122.1

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