Title

Origin of natural gas in Bozhong Depression

作者

唐友军1, 2, 3

Authors

Tang Youjun

单位

1 中国石油大学资源与信息学院, 北京102249; 2 长江大学地球化学系, 湖北荆州434023;

3 油气资源与勘探技术教育部重点实验室, 湖北荆州434023

Organization

( 1. Faculty of Resources and
Information Technology, China University of P etroleum,
Be ijing 100083; 2. D epar tment of Geochemistry, Yangtze
University, Jingzhou 434023; 3. State Key Laboratory of
Exploration Technology for O il and Gas R esources,
Ministry of Education, Jingzhou 434023, China)

摘要

系统研究了渤中地区已发现的天然气地球化学特征。天然气主要为烃类气体,纵向上, 古近系及以下储集层中的天然气为湿气, 新近系的天然气多为干气。天然气甲、乙烷碳同位素变化较大, 其中QHD30- 1构造天然气乙烷碳同位素最重, 而BZ28- 1 构造天然气甲烷碳同位素最重。天然气成熟度为熟高成熟; 天然气中烃类气为有机成因气, 可分为油型气、煤成气和混合气3类, 但以混合气为主。

Abstract

Th is paper discusses the g eochem ica l character istics o f
natural g as d iscovered in Bo zhong Depress ion. The natu ra l
gas is m a inly composed of hydrocarbon g ases, of w hich the
gases in the Pa leogene and o lder reservo irs are w et gases,
w hile those in the Neog ene are dry gases. The carbon iso top ic
compositions o f the m ethane and ethane in the gases are
g rea tly different. The me thane ca rbon isotopic composition o f
the gases in the BZ28 - 1 structure and the ethane carbon
iso top ic composition of the g ases in the QH D30 - 1 structure
have the heav iest va lues, respec tive ly. Them aturity of natu ra l
gases are in the m ature to high m a ture stage. The
hydrocarbon gases are of organ ic and are div ided into o il type
gas, coa l der ived gas and m ixed gas w ith the th ird type be ing
the m ajor pa r

关键词：

渤中地区天然气成因碳同位素天然气组分;

Keywords:

Bozhong Depress ion, natura l gas or ig in,
ca rbon isotopic com position, gas com ponent;

基金项目

DOI