|本期目录/Table of Contents|

[1]董才源,刘满仓,李德江,等.四川盆地高石梯-磨溪地区下二叠统气源示踪[J].断块油气田,2020,27(03):273-277.[doi:10.6056/dkyqt202003001]
 DONG Caiyuan,LIU Mancang,LI Dejiang,et al.Gas source tracing of Lower Permian in Gaoshiti-Moxi area, Sichuan Basin[J].Fault-Block Oil and Gas Field,2020,27(03):273-277.[doi:10.6056/dkyqt202003001]
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四川盆地高石梯-磨溪地区下二叠统气源示踪(PDF)
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《断块油气田》[ISSN:1005-8907/CN:41-1219/TE]

卷:
27
期数:
2020年03
页码:
273-277
栏目:
地质勘探
出版日期:
2020-05-25

文章信息/Info

Title:
Gas source tracing of Lower Permian in Gaoshiti-Moxi area, Sichuan Basin
文章编号:
1
作者:
董才源刘满仓李德江缪卫东
中国石油勘探开发研究院,河北 廊坊 065007
Author(s):
DONG Caiyuan LIU Mancang LI Dejiang MIAO Weidong
Research Institute of Petroleum Exploration and Development, Langfang 065007, China
关键词:
气源示踪地球化学特征下二叠统高石梯-磨溪地区四川盆地
Keywords:
gas source tracing geochemical characteristic lower Permian Gaoshiti-Moxi area Sichuan Basin.
分类号:
TE122.1
DOI:
10.6056/dkyqt202003001
文献标志码:
A
摘要:
以天然气、烃源岩及储层沥青的地球化学特征为主要依据,通过天然气-天然气、储层沥青-烃源岩、天然气-烃源岩3个方面对比,深入探讨四川盆地高石梯-磨溪地区下二叠统天然气来源。研究表明,四川盆地高石梯 ̄磨溪地区下二叠统天然气主要来源于筇竹寺组泥岩。其5项证据分别为:下二叠统天然气乙烷碳同位素小于-30.5‰,甲、乙烷碳同位素倒转是由高演化程度烃源岩所致;多数下二叠统天然气与龙王庙组天然气特征最为相似;GS18,NC1井下二叠统天然气特征与寒武系相似,说明上下层气源一致;高石梯-磨溪地区下二叠统储层沥青地球化学特征与筇竹寺组泥岩最为相似;筇竹寺组泥岩主要为下二叠统供气,这一认识符合干酪根油气生成理论和同位素分馏规律。
Abstract:
Based on the geochemical characteristics of natural gas, source rock and reservoir asphalt, gas source of Lower Permian in Gaoshiti-Moxi area is deeply discussed according to gas-gas, reservoir asphalt-source rock and gas-source rock contrast. Research shows that gas source of Lower Permian in Gaoshiti-Moxi area in Sichuan Basin is mainly from Qiongzhusi mudstone. The five evidences are as follows. Ethane carbon isotope of Lower Permian gas in Gaoshiti-Moxi area is lighter than -30.5‰ and carbon isotope of methane and ethane reverses due to high evolution source rock. Gas of Lower Permian is most similar to that of Longwangmiao Formation. The natural gas characteristics of the Lower Permian and the Cambrian of well GS18 and NC1 are similar, which reveals that gas source of the upper and lower layers is similar. The geochemical characteristics of reservoir asphalt of the Lower Permian in Gaoshiti-Moxi area are most similar to those of the Qiongzhusi mudstone. The mudstone of Qiongzhusi Formation provides natural gas for the Lower Permian reservoir conforms the oil and gas generation theory and isotope fractionation rule.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-11-26;改回日期:2020-03-09。
第一作者:董才源,男,1986年生,工程师,博士,主要从事天然气地质及油气成藏研究。E-mail:dongcn69@petrochina.com.cn。
基金项目:国家科技重大专项课题“重点海相层系构造-沉积响应与有利储层分布预测”(2016ZX05007-002)
更新日期/Last Update: 2020-05-19