石油与天然气地质 ›› 1998, Vol. 19 ›› Issue (2): 162-164.doi: 10.11743/ogg19980215

• 论文 • 上一篇    下一篇

吐─哈盆地天然气成因类型探讨

曾凡刚1, 吴朝东1, 苏传国2   

  1. 1. 北京大学地质系, 北京100871;
    2. 吐哈石油勘探开发会战指挥部, 新疆哈密839000
  • 收稿日期:1997-10-21 出版日期:1998-06-25 发布日期:2012-01-18

GENETIC TYPE OF NATURAL GAS IN TURPAN-HAMI BASIN

Zeng Fangang1, Wu Chaodong1, Su Chuanguo2   

  1. 1. Geology Department of Beijing University, Beijing;
    2. The Command Post of Petroleum Exploration and Development in TurpanHami Basin, Hami, Xinjiang
  • Received:1997-10-21 Online:1998-06-25 Published:2012-01-18

PDF (PC)

1024

被引次数

10

摘要：

吐哈盆地的天然气依据成因可划分为油型气、煤型气、混源气和生物改造气4种类型。油型气主要产于托克逊凹陷及哈密凹陷,具有δ13C3-δ13C2值高、δ13C2<-2.88%和演化程度较高等特征；煤型气主要富集于台北凹陷(鄯善油田、巴喀油田例外),具δ13C1低、重烃气碳同位素重、δ13C2>-2.88%等特征；混源气仅分布于鄯善油田及丘陵油田东块,具δ13C1<δ13C2<δ13C3>δ13C4的碳同位素“倒转”分布特征；生物改造气仅见于巴喀油田及丘陵油田陵4井区,具有密度小、干燥系数大、iC4/nC4及C2/C3值高、δ13C2>δ13C3等特点。

关键词: 吐-哈盆地, 天然气, 碳同位素, 成因

Abstract:

The natural gases in Turpan-Hami Basin can be divided into 4 genetic types:oil-type gas,coal-formed gas,mixture source gas and biological remaking gas.Oil-type gas is mainly distributed in Tuokexun and Hami Sags,and characterized by high δ13C3-δ13C2,high maturity,δ13C2<-2.88%;coal formed gas is enriched in Taibei Sag,and characterized by low δ13C1,high δ13C2,δ13C3 ratios,δ13C2>-2.88% et. al.;mixture source gas is distributed in Taibei Sag,Shanshan Oilfields and eastern Qiuling Oilfields,characterized by δ13C1<δ13C2<δ13C3>δ13C4“reverse”carbon isotopic;biological remaking gas is distributed only in Baha Oilfields and Ling 4 well area in Qiuling Oilfields in Taibei Sag,and characterized by low density,big dry coefficient,high ratios of iC4/nC4,C2/C3 and 3He/4He of,δ13C2>δ13C3 et. al..