低勘探程度盆地烃源岩热演化及排烃史研究——以东海椒江凹陷为例

仝志刚; 赵志刚; 杨树春; 席小应; 郝建荣; 喻英梅

doi:10.11781/sysydz201203319

低勘探程度盆地烃源岩热演化及排烃史研究——以东海椒江凹陷为例

doi: 10.11781/sysydz201203319

中海油研究总院, 北京100027

基金项目: 国家重大科技专项(2008ZX05023-01)资助

详细信息

作者简介:
仝志刚(1969- ),男,博士,高级地质师,从事盆地模拟及油气勘探风险分析等研究工作。E-mail:tongzhg@cnooc.com.cn。

中图分类号: TE122.1
计量
- 文章访问数: 3873
- HTML全文浏览量: 29
- PDF下载量: 1812
- 被引次数: 0
出版历程
- 收稿日期: 2011-11-15
- 修回日期: 2012-03-31
- 刊出日期: 2012-05-28

Research on thermal evolution and hydrocarbon expulsion history of source rocks in low-exploration basins：a case study on Jiaojiang Sag, East China Sea Basin

Research Institute of CNOOC, Beijing 100027, China

摘要

摘要: 低勘探程度盆地,特别是在海域,钻井稀少且一般位于构造高部位,而盆地中心烃源岩埋藏深,又无钻井揭示,如何评价盆地中心烃源岩的演化程度和排烃历史是盆地或凹陷评价的关键问题。该文以东海椒江凹陷为例,从凹陷边缘或构造高部位具备实测温度和镜质体反射率(R_o)资料的钻井出发,利用正演模拟方法,恢复椒江凹陷岩石圈结构及其演化史,进而模拟整个凹陷古新统烃源岩的热演化史。研究表明,椒江凹陷古新统烃源岩现今最大R_o达到2.8%,为过成熟状态。凹陷总排油量略多于排气量,总排烃量为33×10⁸ m³油当量,主要的排烃期在中新世之前。下一步勘探应在凹陷中部凸起带选择圈闭条件好、且形成于中新世之前的目标进行钻探。
- 烃源岩热演化 /
- 正演模拟 /
- 岩石圈结构 /
- 低勘探程度盆地 /
- 东海椒江凹陷
Abstract: In low-exploration basins, especially offshore ones, wells are rare and usually locate in the higher positions. The source rocks in basin centers are buried deeply and are not drilled. Therefore, it is the key for basin/sag evaluation to study the thermal evolution and hydrocarbon expulsion history of source rocks in basin centers. Case studies have been carried out in the Jiaojiang Sag of the East China Sea Basin. Based on the measured temperature and R_o data collected from wells locating in the sag edge or the higher positions, by means of forward modeling method, the lithosphere structure and thermal history of the Jiaojiang Sag have been recovered, and the thermal history of Paleocene source rocks in the whole sag have been modeled. The results show that the maximum R_o of Paleocene source rocks in the sag is 2.8%, indicating over-mature state. The total amount of oil expulsion is a little bit more than that of gas expulsion, and the amount of hydrocarbon expulsion is 33×10⁸ m³ oil equivalent. Hydrocarbon expulsion mainly took place before Miocene. In the future exploration, the prospects with good traps and were formed before Miocene in the central uplifts should be focused on.
- thermal evolution of source rock /
- forward modeling /
- lithosphere structure /
- low-exploration basin /
- Jiaojiang Sag of East China Sea Basin

HTML全文

参考文献(23)

[1]	曹强,叶加仁,石万忠,等.低勘探程度盆地烃源岩早期评价:以南黄海北部盆地东北凹为例[J].石油学报,2009,30(4):522-529.
[2]	瞿辉,赵文智,胡素云.我国油气资源潜力及勘探领域[J].中国石油勘探,2006(4):1-5.
[3]	赵政璋,何海清.中国石油近几年新区油气勘探成果及下步工作面临的挑战和措施[J].沉积学报,2004,22(S1):1-7.
[4]	胡圣标,何丽娟,朱传庆,等.海相盆地热史恢复方法体系[J].石油与天然气地质,2008,29(5):607-613.
[5]	杨树春,仝志刚,贺清,等.潮汕坳陷中生界生烃历史及火成岩侵入影响分析[J].中国海上油气,2008,20(3):152-156.
[6]	何丽娟,汪集旸.沉积盆地构造热演化研究进展:回顾与展望[J].地球物理学进展,2007,22(4):1215-1219.
[7]	胡圣标,张容燕,周礼成.油气盆地地热史恢复方法[J].中国石油勘探,1998,3(4):56-61.
[8]	冉启贵,胡国艺,陈发景.镜质体反射率的热史反演[J].石油勘探与开发,1998,25(6):29-32.
[9]	宗奕,邹华耀,于开平.辽东湾地区古近系烃源岩热演化模拟[J].天然气工业,2010,30(7):21-24.
[10]	郭小文,何生.珠江口盆地白云凹陷烃源岩热史及成熟史模拟[J].石油实验地质,2007,29(4):420-425.
[11]	王颖,张凯.云龙凹陷构造—热演化史分析[J].石油勘探与开发,2006,33(4):470-473.
[12]	刘丽,任战利,崔营滨,等.东濮凹陷现今地温场分布特征[J].地质科学,2007,42(4):787-794.
[13]	邱楠生.柴达木盆地现代大地热流和深部地温特征[J].中国矿业大学学报,2001,30(4):412-415.
[14]	王社教,胡圣标,李铁军,等.准噶尔盆地大地热流[J].科学通报,2000,45(12):1327-1332.
[15]	汪集旸,汪缉安,王永玲,等.辽河盆地地热测量[J].科学通报,1985(13):1008-1010.
[16]	杨风丽,王敏雪,庄建建,等.西湖凹陷反转构造定量运动学过程及对油气的控制作用[J].石油学报,2010,31(4):596-601.
[17]	严德天,王华,王清晨.中国东部第三系典型断陷盆地幕式构造旋回及层序地层特征[J].石油学报,2008,29(2):185-190.
[18]	高德章,赵金海,薄玉玲,等.东海及邻近地区岩石圈三维结构研究[J].地质科学,2006,41(1):10-26.
[19]	何丽娟,熊亮萍,汪集旸.拉张盆地构造热演化模拟的影响因素[J].地质科学,1998,33(2):222-228.
[20]	He Zhiyong,Crews S G,Corrigan J.Rifting and heat flow:why the McKenzie Model is only part of the story//Basin Modeling Perspectives:Innovative Developments and Novel Applications.AAPG Hedberg Conference,Hague,Netherlands,2007.
[21]	Lin Changsong,Zhang Yanmei,Li Sitian,et al.Quantitative mode-ling of multiphase lithospheric stretching and deep thermal history of some Tertiary rift basins in eastern China [J].Acta Geologica Sinica,2002,76(3):324-330.
[22]	McKenzie D P.Some remarks on the development of sedimentary basins[J].Earth and Planetary Science Letters,1978,40(1):25-32.
[23]	仝志刚,贺清,何仕斌,等.东海西湖凹陷地温场及其对烃源岩的作用[J].石油实验地质,2009,31(5):466-471.