ANALYSIS OF HYDROCARBON ACCUMULATION CONDITIONS OF THE UPPER PALAEOZOIC SEQUENCE OF THE SOUTHERN NORTH CHINA BASIN
-
摘要: 南华北上古生界石炭—二叠系含煤地层是一套良好的烃源岩,但多年勘探一直未能取得油气突破。该文从控制上古生界油气成藏的关键因素出发,立足有效烃源岩与油气保存这2个基本条件的分析,取得了对该区主要凹陷上古生界成烃演化和油气保存条件的重要认识。研究认为,南华北上古生界具有二次生烃的有利条件,并具有油气兼生的特点;太康隆起、鹿邑凹陷、谭庄—沈丘凹陷在燕山中晚期已具备二次生烃条件,而倪丘集凹陷较晚,主要在喜山晚期,是寻找晚生晚成油气藏的重点地区;现今深凹区是二次生烃的主要区,并具有有利的油气保存条件。Abstract: The coal-bearing strata of Carboniferous—Permian of Upper Palaeozoic is a set of good source rock in the Southern North China Basin.However,up to now any great exploration breakthrough has not been achieved.Based on analysis of effective source rock and hydrocarbon preservation,starting from the key factors of controlling hydrocarbon accumulation of Upper Palaeozoic,the important recognition on the hydrocarbon-generation evolution and hydrocarbon preservation condition of main sags has been gained in this paper.Three viewpoints by research are as follows.There is advantaged condition of secondary hydrocarbon generation in the Southern North China and the source rock can produce oil and gas.Taikang Uplift,Luyi Sag and Tanzhuang—Shenqiu Sag had secondary-hydrocarbon condition in Mid Late Yanshanian Period,but there is secondary hydrocarbon in Late Himalayan Period in Niqiuji Sag,which is the focus of looking for the hydrocarbon accumulations that hydrocarbon generated late and reservoir formed late.The modern deep sags are the main hydrocarbon-generation areas and they have advantages condition of hydrocarbon preservation in the Southern North China Basin.
-
[1] 刘志武,周立发,何明喜.周口拗陷石炭-二叠系油气资源及其成藏条件[J].地球科学与环境学报,2008,30(3):271-276. [2] 王荣新,赵刚,邓世英.南华北上古生界烃源岩有机地球化学特征[J].石油实验地质,2008,30(5):485-488. [3] 白斌,周立发,刘彬辉,等.华北盆地南部二叠系烃源岩特征研究[J].西北地质,2006,39(3):48-53. [4] 高建平,周立发,徐艳萍,等.太康隆起和周口坳陷上古生界煤系烃源岩地球化学特征[J].西北地质,2006,39(3):59-63. [5] 王宗礼,罗强,赵锋,等.南华北地区鹿邑凹陷石炭-二叠系有利成藏条件分析[J].天然气地球科学,2005,16(2):194-199. [6] 胡俊卿,严永新,吴官生,等.南华北地区石炭系二叠系有机质热演化成因类型研究[J].石油天然气学报(江汉石油学院学报),2005,27(5):554-556. [7] 何治亮,程喆,徐旭辉,等.东秦岭-大别及两侧的大地构造旋回与油气勘探领域[J].石油实验地质,2009,31(2):109-118. [8] 黄泽光,高长林,吉让寿.南华北地区中新生代盆地演化[J].石油与天然气地质,2005,26(2):252-256. [9] 何争光,刘池洋,赵俊峰,等.华北克拉通南部地区现今地温场特征及其地质意义[J].地质论评,2009,55(3):428-434. [10] 饶丹,全书进.南华北盆地周口坳陷周参10井低产油流剖析[J].石油实验地质,2005,27(6):612-618. [11] 耿春雁,王玉林,刘华.济阳地区煤系有机质二次生烃特征及勘探思路[J].新疆石油天然气,2007,3(1):29-33. [12] 全书进,饶丹,孔凡军,等.周口坳陷上古生界油气资源潜力分析[J].石油实验地质,2004,26(6):542-545. [13] 秦勇,张有生,朱炎铭,等.煤中有机质二次生烃迟滞性及其反应动力学机制[J].地球科学:中国地质大学学报,2000,25(3):278-281. [14] 谢其锋,周立发,刘新华,等.南华北盆地周口坳陷南12井油藏成藏条件分析[J].石油地质与工程,2008,22(5):14-17. -
计量
- 文章访问数: 1633
- HTML全文浏览量: 63
- PDF下载量: 856
- 被引次数: 0
下载:
苏公网安备32021102000780号