基于Akima插值的随钻测井数据实时处理方法

马海; 肖红兵; 杨锦舟; 李勇华

doi:10.11911/syztjs.201503016

基于Akima插值的随钻测井数据实时处理方法

doi: 10.11911/syztjs.201503016

中石化胜利石油工程有限公司钻井工艺研究院, 山东东营 257017

基金项目:

国家科技重大专项"低渗油气田高效开发钻井技术"(编号:2011ZX05022)、国家高技术研究发展计划("863"计划)项目"海上大位移井钻完井关键技术开发与集成"(编号:2012AA091501)联合资助.

详细信息

作者简介:
马海(1981—),男,山东蓬莱人,2004年毕业于石油大学(华东)电子信息工程专业,2010年获中国石油大学(华东)控制理论与控制工程专业博士学位,工程师,主要从事随钻测井解释及数据处理方法的研究工作.

中图分类号: P631.8⁺4
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出版历程
- 收稿日期: 2014-12-23
- 修回日期: 2015-04-30
- 刊出日期: 1900-01-01

A Real-Time LWD Data Processing Method Based on Akima Interpolation

Drilling Technology Research Institute, Sinopec Shengli Oilfield Service Corporation, Dongying, Shandong, 257017, China

摘要

摘要: 为解决随钻测井实时数据采样密度不均匀造成的"黑点"及"拉直线"问题,提出了一种随钻测井数据实时处理方法.首先,利用薄层阈值法结合峰峰/谷谷比值法进行实时数据奇异点检测与剔除,消除随钻测井高频振荡干扰造成的"毛刺"现象,提高实时随钻测井曲线信噪比;然后,对实时获取的随钻测井数据进行网格化分析,利用Akima方法建立随钻测井实时数据重采样模型,实现随钻测井实时数据网格化及采样间隔等间距化处理.将该方法应用于实际的随钻测井实时数据处理,处理后的随钻实时数据与内存数据对比表明,最大相对误差10.92%,比常规方法减小6.06百分点;平均相对误差8.73%,比常规方法减小3.46百分点;相关系数0.980 8,比常规方法增大了0.040 2.研究结果表明,薄层阈值法结合峰峰/谷谷比值法及Akima方法,能解决随钻测井实时数据的"黑点"及"拉直线"问题.
- Akima插值 /
- 随钻测井 /
- 数据处理 /
- 网格化 /
- 重采样
Abstract: A real-time LWD data processing method was proposed to address the "black spots" and "pull straight" problems caused by nonuniform sampling of real-time LWD data. Firstly, singular points of real-time LWD data were detected and eliminated utilizing the thin-layer threshold method together with peak-peak or valley-valley ratio method,and the "glitch" phenomenon caused by high-frequency oscillation of LWD was eliminated to improve the signal-to noise-ratio of real-time LWD data.Secondly,the gridding analysis was performed to the real-time LWD data that was obtained.The data gridding and equal interval resampling were accomplished through the establishment of the resampling model of real-time LWD data.The proposed method was applied in the actual LWD data processing.The comparison of processed real-time LWD data with the memory data showed that the maximum relative error and average relative error were 10.92 percent and 8.73 percent respectively,6.06 percent and 3.46 percent less than conventional method;the correlation coefficient was 0.980 8,0.040 2 more than conventional method.The results showed that the combined method of the thin-layer threshold method and the peak-peak or valley-valley ratio method together with Akima method could successfully address the "black spots" and "pull straight" problems.
- Akima interpolation /
- logging while drilling (LWD) /
- data processing /
- gridding /
- resample

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参考文献(11)

杨旭.测井蓝图回放及曲线编辑技术研究与实现[D].青岛:中国石油大学(华东)计算机与通信工程学院,2011. Yang Xu.Realization and technology research about logging-blueprint protract and edit of curve[D].Qingdao:China University of Petroleum(Huadong),College of Computer and Communication Engineering,2011.

Akima H.A new method of interpolation and smooth curve fitting based on local procedures[J].Journal of the ACM,1970,17(4):589-602.

文环明,庄庆德,马晓红.测井曲线的分数布朗插值[J].测井技术,2005,29(5):435-438. Wen Huanming,Zhuang Qingde,Ma Xiaohong.Fractal Brown movement interpolation of logging curves[J].Well Logging Technology,2005,29(5):435-438.

余继峰,于泳,付文钊,等.测井数据Matlab插值与地质旋回性分析应用[J].煤炭学报,2011,36(10):1679-1682. Yu Jifeng,Yu Yong,Fu Wenzhao,et al.Application of interpolation of well logs based on Matlab to analysis of geological cyclicity[J].Journal of China Coal Society,2011,36(10):1679-1682.

孔玉霞,廖明先,易娟子.插值法在测井数据处理中的应用:基于Excel的数据处理[J].石油仪器,2008,22(2):58-60. Kong Yuxia,Liao Mingxian,Yi Juanzi.Application of interpolating based on Excel to logging data processing[J].Petroleum Instruments,2008,22(2):58-60.

马海,杨锦舟,肖红兵,等.基于变异函数及支持向量机测井曲线插值方法[J].测井技术,2012,36(6):575-580. Ma Hai,Yang Jinzhou,Xiao Hongbing,et al.A log interpolation method based on support vector machine and a semivariogram model[J].Well Logging Technology,2012,36(6):575-580.

刘正锋,夏宏权.岩心分析数据插值方法研究[J].天然气工业,1998,18(4):32-34. Liu Zhengfeng,Xia Hongquan.A research on the interpolation of core analysis data[J].Natural Gas Industry,1998,18(4):32-34.

魏茂安,马海,陈潮,等.利用Kriging插值实现测井声波低频分量重构[J].石油钻探技术,2007,35(2):15-17. Wei Maoan,Ma Hai,Chen Chao,et al.The well log AC low frequency components reconstruction using Kriging interpolation[J].Petroleum Drilling Techniques,2007,35(2):15-17.

邵才瑞.井筒数据的Akima插值重采样方法[J].测井技术,2004,28(2):112-114. Shao Cairui.An Akima interpolation method for borehole data resampling[J].Well Logging Technology,2004,28(2):112-114.

来燕菁,张为民,齐党进,等.Akima曲线插补中的空间曲线多项式生成方法研究[J].制造技术与机床,2013,56(2):56-60. Lai Yanjing,Zhang Weimin,Qi Dangjin,et al.Research on generating space curve polynomials for Akima curve interpolation[J].Manufacturing Technology Machine Tool,2013,56(2):56-60.

谢汝宽,王平,郭华,等.考虑航磁水平梯度变化的ΔT网格化方法研究[J].地球物理学报,2013,56(2):660-666. Xie Rukuan,Wang Ping,Guo Hua,et al.Aeromagnetic total field gridding enhancement with horizontal gradient[J].Chinese Journal of Geophysics,2013,56(2):660-666.

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