岩性油气藏 ›› 2018, Vol. 30 ›› Issue (3): 100–111.doi: 10.12108/yxyqc.20180312

• 技术方法 • 上一篇    下一篇

锦州25-1油田优质储层地震响应特征与定量预测

王伟, 吴奎, 何京, 张金辉, 沈洪涛   

  1. 中海石油(中国)有限公司天津分公司 渤海石油研究院, 天津 300459
  • 收稿日期:2017-12-21 修回日期:2018-02-10 出版日期:2018-05-21 发布日期:2018-05-21
  • 作者简介:王伟(1983-),男,硕士,工程师,主要从事构造解释及储层预测等方面的研究工作。地址:(300459)天津市滨海新区海川路2121号渤海石油管理局大厦B座1006室。Email:114786240@qq.com。
  • 基金资助:
    “十二五”国家重大科技专项“近海隐蔽油气藏勘探技术”(编号:2011ZX05023-002)资助

Seismic response characteristics and quantitative prediction of high quality reservoirs in Jinzhou 25-1 oilfield

WANG Wei, WU Kui, HE Jing, ZHANG Jinhui, SHEN Hongtao   

  1. Bohai Oil Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300459, China
  • Received:2017-12-21 Revised:2018-02-10 Online:2018-05-21 Published:2018-05-21

摘要: 渤海湾北部锦州25-1油田及外围区主力含油层系沙二段油气勘探的关键是寻找优质储层。通过地震响应特征分析、井震正演模拟及敏感属性提取,定性刻画出优质储层的地震响应特征及其分布范围;创新应用“叠前同时反演+岩相流体概率分析”组合技术,得到研究区沙二段砂岩储层的概率体;结合25-1油田21口探井资料进行储层厚度及孔隙度与砂岩概率的相关性分析,通过设置阈值,定量预测出了厚度大于50 m、孔隙度大于20%的优质储层发育区。研究成果为锦州25-1油田及其围区的滚动勘探与井位设计提供了理论依据,研究思路为预测辽西北洼其他区域沙二段优质储层提供了方法借鉴。

关键词: 多点地质统计学, 训练图像, SNESIM 方法, 变差函数, 冲积扇, 构型

Abstract: To find high-quality reservoirs is the key for oil and gas exploration in main oil-bearing strata of the second member of Shahejie Formation in Jinzhou 25-1 oilfield and its surrounding areas in northern Bohai Bay. The seismic response characteristic analysis, well seismic forward modeling and sensitive attribute extraction were applied to qualitatively depict the seismic response characteristics and distribution range of high quality reservoirs. The combined technique of"prestack simultaneous inversion and lithofacies fluid probability analysis" was used to obtain the probability body of sandstone reservoir in the second member of Shahejie Formation in the study area. Based on the data from 21 wells in Jinzhou 25-1 oilfield, the correlation between reservoir thickness, porosity and sandstone probability was analyzed. By setting threshold, high quality reservoir development zones with thickness greater than 50 m and porosity greater than 20% were quantitatively predicted. The research results could provide a theoretical basis for the progressive exploration and well location design of Jinzhou 25-1 oilfield and its surrounding areas. The research ideas could provide a reference for high quality reservoir prediction of the second member of Shahejie Formation in other areas of western Liaoning.

Key words: multiple-point geostatistics, training image, SNESIM method, variogram, alluvial fan, structure

中图分类号: 

  • TE122
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