内蒙古杭锦旗探区石炭—二叠系天然气成藏模式

现代地质 ›› 2017, Vol. 31 ›› Issue (03): 587-594.

内蒙古杭锦旗探区石炭—二叠系天然气成藏模式

李功强¹^,²(), 贾会冲³, 潘和平⁴, 谢锐杰¹(), 赵永刚², 刘四洪³, 陈雨霖¹, 刘东海⁵

1.长江大学地球科学学院,湖北武汉 430100
2.中石化华北石油工程有限公司测井分公司,河南新乡 453700
3.中国石化华北油气分公司勘探开发研究院,河南郑州 450006
4.中国地质大学(武汉) 地球物理与空间技术学院, 湖北武汉 430074
5.中国石油东方地球物理公司研究院,河北涿州 072751

收稿日期:2016-12-07 修回日期:2017-02-27 出版日期:2017-06-10 发布日期:2017-06-27
通讯作者: 谢锐杰,男,教授,博士生导师,1965年出生,石油地质学专业,主要从事层序地层学和储层地质、地震资料综合解释的研究工作。Email:xieruijie@yangtzeu.edu.cn。
作者简介:李功强,男,高级工程师,博士研究生,1975年出生,矿产普查与勘探专业,从事测井解释、储层评价及地质应用的研究工作。Email:go7657@126.com。
基金资助:
中国石油化工股份有限公司科技项目“杭锦旗地区大中型气田形成条件与分布规律”(P13109)

The Permo-Carboniferous Gas Reservoir Forming Model of Hangjinqi Exploration Area in Northern Ordos Basin, Inner Mongolia

LI Gongqiang¹^,²(), JIA Huichong³, PAN Heping⁴, XIE Ruijie¹(), ZHAO Yonggang², LIU Sihong³, CHEN Yulin¹, LIU Donghai⁵

1. College of Geosciences,Yangtze University,Wuhan, Hubei 430100,China
2. Well Logging Company of SINOPEC North China Petroleum Engineering Company, Xinxiang, Henan 453700,China
3. Exploration and Development Research Institute, SINOPEC North China Company, Zhengzhou, Henan 450006, China
4. Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan,Hubei 430074, China
5. Geophysical Research Institute of BGP, CNPC,Zhuozhou,Hebei 072751, China

Received:2016-12-07 Revised:2017-02-27 Online:2017-06-10 Published:2017-06-27

摘要/Abstract

摘要：

鄂尔多斯盆地北部杭锦旗探区泊尔江海子—三眼井断裂带南北两侧石炭—二叠系的烃源岩、储集层、源储关系、气水分布、油气运移及产能等成藏条件与特征都具有明显的区别。通过分析断裂带南、北天然气甲烷含量和密度特征的差异,认为断裂带以北天然气部分来自于南部。划分了3种不整合面运移通道类型,并通过分析断层特征,明确了南部生成的天然气可以通过不整合面和断层运移至断裂带以北。结合生储盖组合、运移输导等特征,确定了断裂带以南的伊陕斜坡区煤系气源岩与河流相致密砂岩储层的成藏组合特点为源储紧邻、广覆式分布,断裂带以北的继承性隆起区,虽本地气源条件较差,但与断裂带以南的源岩区构成侧接式组合。探区位于鄂尔多斯盆地北部石炭—二叠系准连续—非连续成藏过渡带上,依此建立了“源储紧邻、物性控藏”和“双源供气、圈闭控藏”南北两种不同的天然气成藏模式。

关键词: 鄂尔多斯盆地, 杭锦旗探区, 石炭—二叠系, 成藏模式

Abstract:

In the north and south sides of Borjianghaizi-Sanyanjing fault zone of Hangjinqi exploration area in northern Ordos Basin, the accumulation conditions and features of the Permo-Carboniferous such as source rock, reservoir, the relationship between source rock and reservoir, gas and water distribution, deliverability etc have significant differences. By analyzing the differences of methane content and density of the natural gas in the south and north of the fault zone, the results show that some part of the natural gas which exists in the north of the fault zone was originated from the south. Three types of unconformity transport channel were divided. Through analyzing the characteristics of the faults, it is clear that the natural gas generated from the south could migrated to the north of the fault zone through the unconformity and faults. Combined with the analysis of source reservoir cap rock assemblage and transport features, the reservoir-forming assemblage characteristics of the coal formation gas source rock and fluvial facies compact sand in Yishan slope area which located in the south of the fault zone was determined to that the source is adjacent to the reservoir which is widely distributed, and in the inherited uplifted area which is in the north of the fault zone, local gas source condition is poor, but a side joint group with the source rock area in the south of the fault zone was formed in this area. The exploration area located in the quasi-continuous-discontinuous transition zone of the Permo-Carboniferous in the north of the Ordos Basin, based on which two different types of natural gas reservoir forming models were established. The model in the south is “the adjacent of the source and reservoir and physical property’s controlling of reservoir”, the models in the north is “dual sources’ supplying of gas, trap’s controlling of reservoir”.

Key words: Ordos Basin, Hangjinqi exploration area, Permo-Carboniferous, reservoir forming model

中图分类号:

TE122.3

李功强, 贾会冲, 潘和平, 谢锐杰, 赵永刚, 刘四洪, 陈雨霖, 刘东海. 内蒙古杭锦旗探区石炭—二叠系天然气成藏模式[J]. 现代地质, 2017, 31(03): 587-594.

LI Gongqiang, JIA Huichong, PAN Heping, XIE Ruijie, ZHAO Yonggang, LIU Sihong, CHEN Yulin, LIU Donghai. The Permo-Carboniferous Gas Reservoir Forming Model of Hangjinqi Exploration Area in Northern Ordos Basin, Inner Mongolia[J]. Geoscience, 2017, 31(03): 587-594.

图/表 7

图1 杭锦旗探区区带划分及位置图

Fig.1 Zone division and location map of Hangjinqi exploration area

图2 断裂南、北天然气甲烷含量特征(左)和密度分布特征(右)

Fig.2 Characteristics of methane content (left) and density distribution (right) of natural gas in the south and north of the fault

图3 杭锦旗探区断裂输导体系及输导层段示意图

Fig.3 Fault transporting system and transport layer segment of Hangjinqi exploration area

表1 杭锦旗探区不整合面油气运移通道类型表

Table 1 Unconformity channel type of hydrocarbon migration in Hangjinqi exploration area

类型		特征	岩性				作用	成藏
双运移通道型Ⅰ		不整合面之上岩层不整合面风化黏土层	砂岩				疏导储集	不整合面上下均可成藏
		不整合面之上岩层不整合面风化黏土层	黏土层				封堵
		半风化岩层	砂岩	碳酸盐岩		变质岩	疏导储集
单运移通道型	Ⅱ₁	不整合面之上岩层不整合面风化黏土层	泥岩				封堵	不整合面之下成藏
		不整合面之上岩层不整合面风化黏土层	黏土层				封堵
		半风化岩层	砂岩	碳酸盐岩		变质岩	疏导储集
	Ⅱ₂	不整合面之上岩层不整合面风化黏土层	砂岩				疏导储集	不整合面之上成藏
		不整合面之上岩层不整合面风化黏土层	黏土层				封堵
		半风化岩层	泥岩				封堵
	Ⅱ₃	不整合面之上岩层不整合面半风化黏土层	砂岩				疏导储集	疏导
	Ⅱ₃	不整合面之上岩层不整合面半风化黏土层	碳酸盐岩		变质岩		疏导储集	疏导

图4 十里加汗区带成藏模式图

Fig.4 Reservoir forming model of Shilijiahan zone

图5 什股壕区带成藏模式图

Fig.5 Reservoir forming model of Shiguhao zone

图6 杭锦旗探区断裂带南、北不同的成藏模式示意图

Fig.6 Different reservoir forming models in the south and north of the fault zone in Hangjinqi exploration area

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