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中国石油勘探  2018, Vol. 23 Issue (5): 88-93    DOI: 10.3969/j.issn.1672-7703.2018.05.011
  工程技术 本期目录 | 过刊浏览 | 高级检索 |
一种水平井合成记录的制作及标定方法——以沾化凹陷桩202—平1井为例
毕俊凤1, 才巨宏2
1 中国石化胜利油田分公司勘探开发研究院;
2 中国石化胜利油田分公司石油开发中心
A method for making and calibrating synthetic records of horizontal wells: a case study on Well Zhuang 202-Ping 1 in the Zhanhua sag
Bi Junfeng1, Cai Juhong2
1 Exploration and Development Research Institute, Sinopec Shengli Oilfield Company;
2 Oil Development Center, Sinopec Shengli Oilfield Company
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摘要 针对水平井钻进方向与地层次序相反,合成记录反映的界面信息同地震剖面不一致等问题,提出了一种实用有效的合成记录制作及标定方法。首先对水平段测井曲线从井底反向求取声波时差及密度曲线,并在原井底位置虚拟一口直井,将反向后的声波时差及密度曲线作倾角转换后加载至该井,计算波阻抗和反射系数。同时对地震数据体沿倾斜地层的底界面拉平,在拉平处理的地震数据体上提取地震子波,与反射系数褶积得到合成地震道,并与虚拟井的井旁地震道对比调整完成井震标定。采用该方法对济阳坳陷沾化凹陷桩202-平1井进行了合成记录的制作与标定,明确了中生界内部各组段分界面及大套油层段在地震剖面上的对应关系,达到了水平井层位标定的目的。
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毕俊凤
才巨宏
关键词 水平井钻井轨迹地层次序曲线反向地震数据体拉平合成记录    
Abstract:The penetrating direction of a horizontal well is opposite to real stratigraphic sequence, so that the interface information reflected by synthetic records is inconsistent with real seismic sections. A practical and effective method for making and calibrating synthetic records is proposed for horizontal wells. First, the AC and density curves are calculated from the bottom of a horizontal well upward, based on the horizontal section logging curve, and an imaginary vertical well is made at the bottom of the horizontal well, then the reverse AC and density curves are imported to the vertical well after dip transform, and acoustic impedance and reflection coefficient are calculated. Second, seismic data are flattened along the bottom of the inclined layer, and based on which seismic wavelets are extracted and convoluted by the reflection coefficient to make a synthetic seismic record. Finally, well-seismic calibration is done by comparing the synthetic seismic record with the seismic trace near the imaginary vertical well. The method has been applied to make and calibrate the synthetic record of Well 202-Ping 1 in the Zhanhua sag in the Jiyang depression. The result defines the corresponding relationship between the members of the Mesozoic formation and thick oil layers on the seismic section, achieving the purpose of reservoir calibration in the horizontal well.
Key wordshorizontal well    drilling trajectory    stratigraphic sequence    reverse logging curve    flattening seismic data    synthetic record
收稿日期: 2017-06-19      出版日期: 2018-09-15
ZTFLH:     
基金资助:国家科技重大专项“渤海湾盆地精细勘探关键技术”(2011ZX05006)。
引用本文:   
毕俊凤, 才巨宏. 一种水平井合成记录的制作及标定方法——以沾化凹陷桩202—平1井为例[J]. 中国石油勘探, 2018, 23(5): 88-93.
Bi Junfeng, Cai Juhong. A method for making and calibrating synthetic records of horizontal wells: a case study on Well Zhuang 202-Ping 1 in the Zhanhua sag. China Petroleum Exploration, 2018, 23(5): 88-93.
链接本文:  
http://www.cped.cn/CN/10.3969/j.issn.1672-7703.2018.05.011      或      http://www.cped.cn/CN/Y2018/V23/I5/88
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