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《Well Logging Technology》 1992-01
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Application of Spline Function to Algorithm of Compensated Neutron Log

Ju xiaodong  
Starting discussion on calibration points of Compensated Neutron Log,this paper proposes that spline interpolation, instead of conventional regression fitting,is used to build the response equation of CNL. The favorate spline function is polynomial in a segment of the domain. The author points out four-point third-order polynomial is a practical formula of the spline interpolation. The coefficients of the polynomial are easy to derive. The realtime processing parameters in porosity equation can be accepted by a digital computer system supported by ordinary software. A new calibration method is proposed for CNL. The test of downhole tools is much more simplified. Determination of water point value is discussed. The concrete formula for calculating parameters is provided in the appendix,and can be used as the basis for computer programming.
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Meng Jun Department of Machinery Manufacturing;A Locally Defined Cubic Parametric Spline[J];;1987-01
2 Wu Hongyi Basic Courses Department;On the Poised Problem of Quartic Lacunary Spline Interpolation[J];;1987-Z1
3 Chen Jianming;Zhang Jiaquan Department of Machinery Manufacturing;EXPERIMENTAL AND MATHEMATICAL STUDY OF INGOT'S FEED METAL REQUIRED IN TIME INCREMENTS[J];;1988-03
4 Xie Shufeng Department of Machinery Engineering;THE KIND OF PLANAR CUBIC PARAMETRIC CURVES AND THE DISTRIBUTIVE THEORY FOR POINT OF INFLECTION AND POINT OF SINGULARITY[J];;1991-04
5 DONG Ming zhe YU Wen bo YANG Hong yan (Department of Mathematics,Anshan Normal University,Anshan Liaoning 114005,China);The Application of Huffman Algorithm in Scheduling Public Travel Services[J];Journal of Anshan Teachers College;2002-03
6 Qi Dongxu ( CAD Research Center );SOME NOTES ON MATHEMATICAL SCHEMES IN COMPUTER AIDED GEOMETRIC MODELING[J];Journal of North China University of Technology;1991-01
7 Sun Fuwei Xue Qingbo Chen Dezhuang ( Department of Fundamental Sciences );THE APPLICATION OF SPLINE FUCTIONS IN TUNNEL ENGINEERING[J];Journal of North China University of Technology;1992-03
8 Qi Dongxu Ge Jiantao ( CAD Research Center, North China University of Technology, 100041, Beijing, China);On Generating of Point Set Sequences and Constructing of Fractals (Ⅰ)[J];Journal of North China University of Technology;1993-03
9 Qi Dongxu; Li Huashan (CAD Center, North China Univ. of Tech., 100041, Beijing, China);On the Affine Transformation in Graph Generating and Image Processing[J];Journal of North China University of Technology;1995-03
10 Song Ruixia(College of Sciences, North China Univ. of Tech., 100041,Beijing, China);Many-Knot Technique of Spline Function[J];Journal of North China University of Technology;2003-01
China Proceedings of conference Full-text Database 1 Hits
1 Xia Jiahua Guo Wenfu Zhang Zhishu;The Application of the Cubic Spline Function for Steel Tube Arch Ring Lofting[A];[C];1999
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