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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第33卷

期数:

2011年第03期

页码:

261-267

栏目:

基础地质与矿产地质

出版日期:

2011-09-15

文章信息/Info

Title:

Study on Secondary Hydrocarbon Generation of Ordovician Hydrocarbon Source Rock in Tarim Basin

文章编号:

1672-6561(2011)03-0261-07

作者:

辛艳朋¹; 2; 邱楠生¹; 2; 秦建中³; 郑伦举³

1.中国石油大学 油气资源与探测国家重点实验室,北京 102249; 2.中国石油大学 盆地与油藏研究中心, 北京 102249; 3.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 214151

Author(s):

XIN Yan-peng¹; 2; QIU Nan-sheng¹; 2; QIN Jian-zhong³; ZHENG Lun-ju³

1. State Key Laboratory of Petroleum Resource and Prospecting, China Unicersity of Petroleum, Beijing 102249, China; 2. Research Center of Basin and Reservoir, China Unicersity of Petroleum, Beijing 102249, China; 3. Wuxi ResearchInstitute of Experimental

关键词:

二次生烃; 奥陶系; 烃源岩; 高压釜; 起始成熟度; 生烃潜力; 塔里木盆地

Keywords:

secondary hydrocarbon generation;  Ordovician;  hydrocarbon source rock;  autoclave;  original maturity;  hydrocarbon generation potential;  Tarim Basin

分类号:

P599;TE122

DOI:

-

文献标志码:

A

摘要:

为研究海相烃源岩二次生烃规律和塔里木盆地生排烃规律,以塔里木盆地奥陶系烃源岩为研究对象,首先通过构造-热演化史和生烃史研究得出,塔里木盆地典型构造单元奥陶系烃源岩具有二次生烃的特征,并且起始成熟度和生烃期次不同。然后选取自然条件下演化至不同起始成熟度的奥陶系海相烃源岩,采用热压模拟实验方法系统研究其二次生烃规律。研究表明:塔里木盆地奥陶系海相烃源岩二次生烃的主控因素是起始成熟度,二次生烃产率随起始成熟度增加规律性减小;低成熟和中成熟烃源岩具有大量生排油气潜力,出现相对延迟的生油高峰,高成熟烃源岩没有大量生油和生气的能力;两次不连续生烃量与一次连续生烃量的差值也受起始成熟度控制,具有阶段性;起始成熟度在低成熟到成熟阶段时,二次不连续生烃过程会增加烃源岩的生烃量,使生烃潜力增加,而高成熟阶段以后,二次不连续生烃过程就会减少烃源岩的生烃量,使生烃潜力减小。

Abstract:

With the view of mechanism of secondary hydrocarbon generation of marine source rock and pattern of hydrocarbon generation and expulsion, Ordovician hydrocarbon source rock was taken as the object in Tarim Basin. The characteristics of Ordovician hydrocarbon source rocks in typical structural units included secondary hydrocarbon generation and different original maturities and hydrocarbon generation stages according to the study on tectonic-thermal evolution and hydrocarbon generation histories in Tarim Basin. Ordovician marine hydrocarbon source rocks with different original maturities under the natural condition were selected to discuss the pattern of secondary hydrocarbon generation according to the thermal pressure simulation. The results showed that the secondary hydrocarbon generation potential of Ordovician hydrocarbon source rocks in Tarim Basin was dominated by original maturity; secondary hydrocarbon generation production rate decreased regularly with the increase of original maturity; the hydrocarbon generation and expulsion potential of hydrocarbon source rock with low and middle maturities was high and there was relatively later hydrocarbon generation peak, and the potential of rock with high maturities was low; the difference between the amount of continuous hydrocarbon generation and the sum of the first and secondary was also dominated by original maturity; when the original maturities were low and middle, the amount and potential of hydrocarbon generation increased during the process of the first and secondary hydrocarbon generation, and the amount and potential decreased when the original maturity was high.

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相似文献/References:

[1]李艳,张秀颀,逯晓喻,等.松辽盆地上古生界烃源岩特征及有效性分析[J].地球科学与环境学报,2013,35(04):39.
　LI Yan,ZHANG Xiu-qi,LU Xiao-yu,et al.Characteristics and Validity Analysis of Hydrocarbon Source Rocks of Upper Paleozoic in Songliao Basin[J].Journal of Earth Sciences and Environment,2013,35(03):39.
[2]金平信,刘承红,高保国,等.渤南凹陷渤深6块潜山储层描述技术[J].地球科学与环境学报,2007,29(02):174.
　JIN Ping-xin,LIU Cheng-hong,GAO Bao-guo,et al.Description Technology for Layer of Burial Hill Oil Pool in Boshen-6 Block of Bonan Depression[J].Journal of Earth Sciences and Environment,2007,29(03):174.
[3]刘克奇,蔡忠贤,张淑贞,等.塔中地区奥陶系碳酸盐岩不整合带的结构[J].地球科学与环境学报,2006,28(02):41.
　LIU Ke-qi,CA I Zhong-xian,ZHANG Shu-zhen,et al.Structure of Ordovician Carbonate Unconformity Zone in Tazhong Area[J].Journal of Earth Sciences and Environment,2006,28(03):41.

备注/Memo

备注/Memo:

收稿日期:2011-01-24
基金项目: 国家重点基础研究发展计划项目(2005CB422102); 中国石油化工股份有限公司海相前瞻性研究项目(YPH08057)
作者简介: 辛艳朋(1982-),女,河南平顶山人,工学博士研究生,从事沉积盆地构造-热演化和油气成藏机理研究。E-mail:xinyanpeng82@163.com

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更新日期/Last Update: 2011-09-20