Research on reservoir-forming time of deep natural gas in Xujiaweizi faulted-depression in Songliao Basin

doi:10.7623/syxb2006S1008

Editorial office of ACTA PETROLEI SINICA ›› 2006, Vol. 27 ›› Issue (S1): 42-46.DOI: 10.7623/syxb2006S1008

• Petroleum Exploration • Previous Articles Next Articles

Research on reservoir-forming time of deep natural gas in Xujiaweizi faulted-depression in Songliao Basin

Li Jingkun^1,2, Feng Zihui², Liu Wei², Song Lanbin², Shu Ping²

1. China University of Geosciences, Beijing 100083, China;
2. Research Institute of Exploration and Development, PetroChina Daqing Oilfield Company Ltd., Daqing 163712, China

Received:2006-07-25 Revised:2006-10-30 Online:2006-12-25 Published:2006-12-25

松辽盆地徐家围子断陷深层天然气成藏期研究

李景坤^1,2, 冯子辉², 刘伟², 宋兰斌², 舒萍²

1. 中国地质大学北京 100083;
2. 大庆油田有限责任公司勘探开发研究院黑龙江大庆 163712

作者简介:李景坤,男,1961年8月生,1989年获大庆石油学院硕士学位,现为大庆油田有限责任公司勘探开发研究院高级工程师,中国地质大学(北京)矿产普查与勘探专业在读博士研究生,主要从事有机地球化学研究和油气资源评价工作.E-mail:lijingkun@petrochina.com.cn
基金资助:
中国石油天然气股份有限公司科技攻关项目"中石油油气预探项目"(20040101)资助.

Abstract

Abstract: Maximum paleoheat flux is 96.3mW/m² and the average geothermal gradient is 5.0℃/hm at 65Ma bp in Xingcheng area of Xujiaweizi faulted-depression in Songliao Basin according to thermal indictors inversion. The result of basin modeling and calculating indicates that natural gas of hydrocarbon sources was quickly generated from 110Ma bp and two obvious gas-generating peaks occurred in individually 95Ma bp and 75Ma bp in Xujiaweizi faulted-depression. Homogenization temperatures of inclusion in the volcanic reservoirs prove that reservoir-forming temperature range of natural gas in Yingcheng Formation in Xushen1 Well is from 115℃ to 186℃. The synthetic analysis of the inclusion homogenization temperatures and reservoir thermal-evolution history indicates that reservoir-forming time of the deep natural gas in Xingcheng area of Xujiaweizi faulted-depression are about from 103Ma bp to 60Ma bp. The reservoir-forming time occurred after the deposition of Denglouku Formation which is cap rock, which is of advantage to conservation of deep natural gas in this area.

Key words: Xujiaweizi faulted-depression, geothermal flow, gas-generating peak, inclusion, homogenization temperature, reservoir-forming time

摘要： 热指标反演恢复表明,松辽盆地徐家围子断陷兴城地区古热流值在距今65Ma时达到最大值96.3mW/m²,同时平均地温梯度高达5.0℃/hm。盆地模拟计算结果表明,徐家围子断陷烃源岩从距今110Ma开始快速生气,在距今95Ma和75Ma出现了两次显著的生气高峰。火山岩储层包裹体均一温度显示,徐深1井营城组天然气成藏温度为115℃~186℃。包裹体均一温度和储层热演化史综合分析表明,徐家围子断陷兴城地区深层天然气成藏期是距今103~60Ma,即成藏期出现在登娄库组盖层形成以后,这对该地区深层天然气的保存比较有利。

关键词: 徐家围子断陷, 大地热流, 生气高峰, 包裹体, 均一温度, 成藏期

CLC Number:

TE112.1

Li Jingkun, Feng Zihui, Liu Wei, Song Lanbin, Shu Ping. Research on reservoir-forming time of deep natural gas in Xujiaweizi faulted-depression in Songliao Basin[J]. Editorial office of ACTA PETROLEI SINICA, 2006, 27(S1): 42-46.

李景坤, 冯子辉, 刘伟, 宋兰斌, 舒萍. 松辽盆地徐家围子断陷深层天然气成藏期研究[J]. 石油学报, 2006, 27(S1): 42-46.

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Research on reservoir-forming time of deep natural gas in Xujiaweizi faulted-depression in Songliao Basin

松辽盆地徐家围子断陷深层天然气成藏期研究

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