地学前缘 ›› 2018, Vol. 25 ›› Issue (4): 155-167.DOI: 10.13745/j.esf.sf.2018.6.27

• 盆地与资源 • 上一篇    下一篇

济阳坳陷邵家地区沙四段油气成藏差异性及其定量评价

林承焰，朱兆群，刘魁元，董春梅，任丽华，李志鹏   

  1. 1. 中国石油大学(华东) 地球科学与技术学院, 山东 青岛 266580
    2. 中国石化胜利油田分公司河口采油厂, 山东 东营 257200
    3. 中国石化胜利油田勘探开发研究院, 山东 东营 257061
  • 收稿日期:2017-09-24 修回日期:2018-01-25 出版日期:2018-07-15 发布日期:2018-07-15
  • 作者简介:林承焰(1963—)，男，博士，教授，主要从事油气藏开发地质、油气地质与勘探研究。E-mail：lincy@upc.edu.cn
  • 基金资助:
    国家科技重大专项(2017ZX05009-001)

Quantitative evaluation of hydrocarbon accumulation disparity in the fourth member of the Shahejie Formation in the Shaojia area of the Jiyang depression.

IN Chengyan,ZHU Zhaoqun,LIU Kuiyuan,DONG Chunmei,REN Lihua,LI Zhipeng   

  1. 1. School of Geosciences, China University of Petroleum(East China), Qingdao 266580, China
    2. Hekou Oil Production Plant of Shengli Oilfield, SINOPEC, Dongying 257200, China
    3. Research Institute of Exploration and Development, Shengli Oilfield,SINOPEC, Dongying 257061, China
  • Received:2017-09-24 Revised:2018-01-25 Online:2018-07-15 Published:2018-07-15

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摘要： 济阳坳陷邵家地区沙四段勘探目标多、油气分布不均一且对油气成藏规律认识程度较低，给油气勘探工作带来较大困难。为了能够直观地认识油气成藏差异特征，并可以快速方便地为油气勘探决策部署提供有效指导意见，对研究区沙四段开展成藏差异性定量评价研究。在立足于已有勘探成果的基础上，按照含油气系统区带圈闭分层次对其油气成藏差异性特征进行系统剖析，并充分利用改进的区带与圈闭评价方法以及借助于统计挖掘等数学手段进行定量表征评价。结果表明：总体上研究区沙四段油气成藏差异明显，油源、储层及运聚条件是影响油气成藏差异性的主要因素；北部断阶带成藏条件优越，仍是主要的滚动勘探区，评价出的1类圈闭可作为优选的钻探目标；南部缓坡带成藏条件变化较大，通过加大勘探则有望成为油气资源接替区；西部断裂带成藏条件总体较差，勘探风险较高，局部可作为油气潜力区。开展的成藏差异性定量评价可以有效降低油气勘探成本，深化油气成藏认识，对类似地区的油气效益勘探具有一定借鉴意义。

关键词: 成藏差异性, 定量评价, 邵家地区, 沙四段

Abstract: A great number of hydrocarbon exploration targets exist in the fourth member of the Shahejie Formation, in the Shaojia area of the Jiyang depression. However, hydrocarbon exploration activities in Shaojia are limited due to hydrocarbon distribution heterogeneity and the lacking understanding of hydrocarbon accumulation. In this paper, a quantitative evaluation on hydrocarbon accumulation disparity was conducted to intuitively study the characteristics of hydrocarbon accumulation and provide guidance for exploration decision making fast and conveniently. Based on current exploration achievements, differences in hydrocarbon accumulation at different levels, including petroleum system, play and trap, were analyzed systematically and evaluated quantitatively in the study case, by improved geological evaluation methods of play and trap and mathematics approaches such as statistical mining. The results showed that there is a significant disparity in hydrocarbon accumulation in the study area, which is mainly controlled by the geological factors including source, reservoir, migration and accumulation. In general, the northern fault terrace zone, which possesses favorable accumulation conditions, could still be the main progressive exploration area; and the evaluated first class traps would be the optimized targets in further exploration. The southern gentle slope zone shows a large variation in accumulation conditions, which is of the potential to be the replacement tract by exploration enhancement. In contrast, the western fault zone possesses poor accumulation conditions of high exploration risks, but could be treated as potential areas of oil and gas regionally. The quantitative disparity evaluation conducted in this study can contribute to reducing exploration costs as well as deepening our understanding of hydrocarbon accumulation, and serve as a reference for efficient explorations in similar cases.

Key words: difference in hydrocarbon accumulation, quantitative evaluation, Shaojia area, fourth member of the Shahejie Formation

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