首页> 外国专利> A NEW METHOD TO ENHANCE VERTICAL RESOLUTION OF TIME-DECAY LOG USING FORWARD MODELING DECONVOLUTION OF TIME-DECAY SPECTRA

A NEW METHOD TO ENHANCE VERTICAL RESOLUTION OF TIME-DECAY LOG USING FORWARD MODELING DECONVOLUTION OF TIME-DECAY SPECTRA

机译:利用时间衰减谱正演反卷积提高时间衰减测井垂直分辨率的新方法

摘要

A method for enhancing measurement resolution is disclosed. In one embodiment,the method includes (1) obtaining multiple measurement samples at each ofmultiple positions along a borehole; (2) extracting reference index samplesfrom the set of measurement samples; (3) determining a difference between eachof the reference index samples and corresponding modeled index samples; and(4) updating a set of enhanced index samples based on the difference. Theindex samples are preferably chosen to be representative of the measurementsamples obtained at each position, and accordingly, may be selected ones ofthe measurement samples, or alternatively, may be averages of the measurementsamples. The aforementioned modeled index samples may be found fromapplication of a predetermined tool response to the enhanced index samples,which in turn, may be found by iteration. Once the difference has been reducedbelow some threshold, the relationship between the enhanced index samples andthe reference index samples may be used to calculate a deconvolution filterfor all of the original measurement samples from the borehole. When applied tothe original measurement samples, the deconvolution filter producesmeasurement samples having an enhanced resolution.
机译:公开了一种用于提高测量分辨率的方法。在一实施例中,该方法包括(1)在每个沿钻孔的多个位置; (2)提取参考指标样本从一组测量样本中; (3)确定两者之间的差异参考指标样本和相应的建模指标样本;和(4)根据差异更新一组增强索引样本。的优选选择指数样本以代表测量结果在每个位置获得的样本,因此可以从测量样本,或者可以是测量的平均值样品。可以从以下位置找到上述建模的索引样本将预定的工具响应应用于增强的索引样本,反过来,可以通过迭代找到。一旦差异减少低于某个阈值,增强索引样本与参考索引样本可用于计算反卷积滤波器对于来自钻孔的所有原始测量样本。当应用于原始测量样本,反卷积滤波器产生具有增强分辨率的测量样品。

著录项

  • 公开/公告号CA2393153A1

    专利类型

  • 公开/公告日2001-06-14

    原文格式PDF

  • 申请/专利权人 HALLIBURTON ENERGY SERVICES INC.;

    申请/专利号CA20002393153

  • 发明设计人 HAGIWARA TERUHIKO;

    申请日2000-12-01

  • 分类号G01V3/00;

  • 国家 CA

  • 入库时间 2022-08-22 01:21:24

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