石油与天然气地质 ›› 2018, Vol. 39 ›› Issue (6): 1237-1245.doi: 10.11743/ogg20180613

• 油气勘探 • 上一篇    下一篇

下生上储式油气运移优势路径确定方法及其应用

王浩然1, 付广1, 宿碧霖2, 孙同文3, 汤文浩4   

  1. 1. 东北石油大学 地球科学学院, 黑龙江 大庆 163318;
    2. 中国石油 大庆油田有限责任公司 第四采油厂, 黑龙江 大庆 163318;
    3. 广东石油化工学院, 广东 茂名 525000;
    4. 河北思科立珂石油科技有限责任公司, 河北 沧州 062650
  • 收稿日期:2017-08-23 修回日期:2018-08-22 出版日期:2018-12-28 发布日期:2018-10-22
  • 通讯作者: 付广(1962-),男,博士、教授,油气藏形成与保存。E-mail:fuguang2008@126.com。 E-mail:fuguang2008@126.com
  • 第一作者简介:王浩然(1989-),男,博士研究生,油气藏形成与保存。E-mail:wanghaoranpro@163.com。
  • 基金项目:
    国家科技重大专项(2016ZX05007003003);中国石油天然气股份有限公司重大科技项目(2016D-0702);国家自然科学基金项目(41372153,41872157);东北石油大学研究生创新科研项目(YJSCX2017-003NEPU)。

A method to determine preferential pathways for hydrocarbon migration in “lower source rock and upper reservoir” combination and its application

Wang Haoran1, Fu Guang1, Su Bilin2, Sun Tongwen3, Tang Wenhao4   

  1. 1. College of Earth Science, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
    2. The 4thOil Production Plant, Daqing Oilfield Company Ltd., PetroChina, Daqing, Heilongjiang 163318, China;
    3. Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China;
    4. Hebei Scoilmic Petroleum Technology Co., Ltd, Cangzhou, Hebei 062650, China
  • Received:2017-08-23 Revised:2018-08-22 Online:2018-12-28 Published:2018-10-22

摘要: 基于下生上储式油气运移模式及特征,结合三维地震资料、测井和录井资料,分别利用油气成藏期断层活动速率与断面油气势能相结合、砂地比与砂体顶面流体势能相结合的理论,建立了一套下生上储式油气运移优势路径的确定方法,进而可得到下生上储式油气优势成藏范围。将该方法应用到了海拉尔盆地贝尔凹陷局部构造南屯组一段下生上储式油气成藏中。结果表明:南屯组一段下生上储式油气成藏分为油气垂向运移模式和先垂向后侧向运移模式,分别确定其中油气运移优势路径有17个和11个,相应的油气优势成藏范围分别为2.3 km和1 km。与研究区内油气实际分布规律相对比,计算结果与实际情况吻合,表明该方法可以用于确定下生上储式油气运移优势路径,有利于划定下生上储式油气优势成藏范围,可以为油气勘探提供指导作用。

关键词: 下生上储, 成藏组合, 油气运移, 优势路径, 南屯组, 海拉尔盆地

Abstract: The study is based on the analysis of characters of hydrocarbon migration within a lower source rock-upper reservoir combination,and 3D seismic and logging data.We worked out a method to determine the preferential pathways for hydrocarbon migration through combining fault activity ratio with hydrocarbon potential energy on fault plane and combining net-to-gross ratio with fluid potential on top of sand bodies.It can be used to define the scope of preferential hydrocarbon accumulation in this mode.Its application in the 1st member of Nantun Formation (K1n1) within a local structure of Bei’er Sag,Hailar Basin,reveals that hydrocarbon migration in the reservoir could be divided into two modes:the mode of vertical migration and the mode of vertical migration followed by lateral migration.There are 17 preferential migration pathways for the former and 11 for the latter.Correspondingly,their scopes of preferential hydrocarbon accumulation are within 2.3 km and 1km respectively,just coinciding with the practical hydrocarbon distribution.It demonstrates that this method is feasible for determining preferential pathways in hydrocarbon migration within a lower source rock-upper reservoir combination,and conducive to delineating the scope of petroliferous region in the reservoir.In conclusion,it is of importance to guide future petroleum exploration.

Key words: combination of “lower source rock with upper reservoir”, hydrocarbon accumulation assemblage, hydrocarbon migration, preferential pathway, Nantun Formation, Hailar Basin

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