松辽盆地梨树断陷天然气成因类型及勘探方向

doi:10.7623/syxb201605006

石油学报 ›› 2016, Vol. 37 ›› Issue (5): 622-630.DOI: 10.7623/syxb201605006

松辽盆地梨树断陷天然气成因类型及勘探方向

宋振响, 顾忆, 路清华, 周卓明, 李贶

中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所江苏无锡 214126

收稿日期:2015-10-26 修回日期:2016-02-23 出版日期:2016-05-25 发布日期:2016-06-06
通讯作者: 宋振响,男,1983年6月生,2006年获山东科技大学学士学位,2009年获中国科学院研究生院硕士学位,现为中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所工程师,主要从事油气成烃成藏及非常规油气地质研究。Email:szhx0606@163.com
作者简介:宋振响,男,1983年6月生,2006年获山东科技大学学士学位,2009年获中国科学院研究生院硕士学位,现为中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所工程师,主要从事油气成烃成藏及非常规油气地质研究。Email:szhx0606@163.com
基金资助:
中国石油化工股份有限公司科技开发部项目(P09026)资助。

Genetic types of natural gas and its exploration direction in Lishu fault sag, Songliao Basin

Song Zhenxiang, Gu Yi, Lu Qinghua, Zhou Zhuoming, Li Kuang

Wuxi Institute of Petroleum Geology, Sinopec Research Institute of Petroleum Exploration and Production, Jiangsu Wuxi 214126, China

Received:2015-10-26 Revised:2016-02-23 Online:2016-05-25 Published:2016-06-06

摘要/Abstract

摘要：

随着松辽盆地梨树断陷金山地区典型煤型气的发现,梨树断陷天然气来源及成因成为一个亟需研究的问题。结合梨树断陷天然气的发现情况,在天然气的组分组成、轻烃参数及组分碳同位素分析的基础上,讨论了不同地区天然气的来源及成因。研究表明梨树断陷天然气除J2井外,主要为有机成因气,且存在单源型和混源型2种类型:单源型气主体为油型气,而金山地区为典型的煤型气;梨树断陷天然气混源现象普遍,其中孤家子、后五家户和新立地区浅层主要为煤型气和油型气的混合,四五家子地区还可能有生物气的混入。母质类型较好的沙河子组二段烃源岩为梨树断陷的主力油气源岩,小宽断裂和秦家屯断裂之间为该套烃源岩的有利分布区,下一步有望获得油气突破;金山地区煤型气的发现揭示火石岭组和沙河子组一段煤系源岩具备充足的生气能力,东南斜坡带煤型气有望获得新的突破。

关键词: 碳同位素, 轻烃, 天然气成因, 勘探方向, 梨树断陷

Abstract:

With the discovery of coal-type gas in Jinshan area, it has becoming a pressing research topic to study the origin and genetic types of natural gases in Lishu fault sag. Combining with the natural gas distribution, this paper discussed the natural gas origin and genetic types in Lishu fault sag based on the analysis of gas component composition, light hydrocarbon parameters and carbon isotopic compositions. The result indicates that the natural gases in Lishu fault sag are mainly organic origin with the exception of the gas from J2 well. The gas type can be divided into two categories, monophyletic type and mixed type respectively. The monophyletic type gases are mainly oil-type gas while the gases from Jinshan area are coal-type gas. Mixed type gases are very common in Lishu fault sag, the gases from Gujiazi, Houwujiahu and Xinli are mixed with oil-type gas and coal-type gas while the gas from Siwujiazi are mixed with thermogenetic gas and biogenetic Gas. The mainly source rock formation in Lishu fault sag is K₁sh², with the type Ⅱ₁ kerogens, the region between Xiaokuan fault and Qinjiatun fault maybe a favorable distribution area for this high-quality source rocks and also a good target. The discovery of coal-type gas in Jinshan area revealed that the potential of gas generation from K₁h and K₁sh¹ coaly source rocks are very huge, coal gas is expected to obtain a new breakthrough in southeast slope belt.

Key words: carbon isotope, light hydrocarbon, genesis of natural gases, exploration direction, Lishu fault sag

中图分类号:

TE122.1

宋振响, 顾忆, 路清华, 周卓明, 李贶. 松辽盆地梨树断陷天然气成因类型及勘探方向[J]. 石油学报, 2016, 37(5): 622-630.

Song Zhenxiang, Gu Yi, Lu Qinghua, Zhou Zhuoming, Li Kuang. Genetic types of natural gas and its exploration direction in Lishu fault sag, Songliao Basin[J]. Acta Petrolei Sinica, 2016, 37(5): 622-630.

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松辽盆地梨树断陷天然气成因类型及勘探方向

Genetic types of natural gas and its exploration direction in Lishu fault sag, Songliao Basin

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