西南石油大学学报(自然科学版)

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边际油田薄油层开发中的地质导向技术

邹晓萍1,陈恭洋2   

  1. 1. 中海石油深圳分公司,广东深圳518069
    2. 长江大学计算机科学学院,湖北荆州434023
  • 出版日期:2013-10-20 发布日期:2013-10-20

Application of Geosteering Technique in the Marginal Oil
Sheet Developing

Zou Xiaoping1, Chen Gongyang2   

  1. 1. CNOOC Shenzhen Limited,Shenzhen,Gaungdong 518069,China
    2. College of Computer Science,Yangtze University,Jingzhou,Hubei 434023,China
  • Online:2013-10-20 Published:2013-10-20

摘要:

HZ25–3 油田是中国海上某探区第一个用钻采平台开发的边际油田。油田构造幅度低,油层多且薄,储量规
模小。针对两个油藏油层薄、非均质性强、连续性差的特点,首先精细设计了两口水平井的轨迹,其次应用近钻头的
方位密度及成像使水平井成功着陆在距砂岩顶0.5 m 的储层中。并通过地层边界探测技术结合三维地质模型的实时
更新技术进行随钻跟踪、实时调整井眼轨迹,在不到2.0 m 的薄油层中钻水平段420~500 m,砂岩钻遇率达80% 以上。
初期日产油达400 m3 以上,水平井开发取得了良好的效果,同时提高了边际油田的经济效益。

关键词: 边际油田, 地质导向, 密度成像, 地层边界探测, 三维地质模型

Abstract:

HZ25–3 Field is the first marginal oilfield on production independently developed by platform in eastern Peal River
Mouth Basin. According to the characteristic of very thin oil column,serious heterogeneity and discontinuity of the two major
reservoirs,the trajectorys of two horizontal wells were designed accurately. The log curves from LWD tool close to the bit are
quite important to land the well succesfully,and the information of formation boundary guided the lateral placement and well
trajectory adjustment. The geosteering drilling technique was successfully applied in two horizontal wells of HZ25–3 Field,
which brought the good productivity.

Key words: marginal oilfield, geosteeling, density imaging, formation boundary detecting, 3D geologic model