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Method for confirming yield through spectrum unfolding analysis of stratum element logging instrument

A technology of logging instruments and formation elements, applied in the fields of instruments, soil material testing, special data processing applications, etc., can solve problems such as large errors

Inactive Publication Date: 2014-12-24
XIAN AOHUA ELECTRONICS INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The types of stratum elements calculated by this spectrum analysis method will not be wrong, but for some elements with low content or low sensitivity, the calculation process has large errors

Method used

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  • Method for confirming yield through spectrum unfolding analysis of stratum element logging instrument
  • Method for confirming yield through spectrum unfolding analysis of stratum element logging instrument
  • Method for confirming yield through spectrum unfolding analysis of stratum element logging instrument

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Experimental program
Comparison scheme
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Embodiment Construction

[0036] The method that the present invention determines yield is as follows:

[0037] 1. Calculate the normalized standard capture spectrum and calculate the response matrix A

[0038] The calculation method of the response matrix A is as follows:

[0039] let a ij is the (i, j) element of the response matrix A, that is, the element in row i and column j of A.

[0040] For the card segment method, then

[0041] c ij = Σ k = k n k n + 1 N kj , n = 1,2 , . . . n , - - - ( 2 )

[0042] where n is ...

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Abstract

The invention provides a method for confirming yield through spectrum unfolding analysis of a stratum element logging instrument. The method comprises the following steps of confirming a segment area number n and left and right boundaries kn and kn+1 of each segment area; calculating a standard trap spectrum normalization response matrix A; calculating a total numerical value ci of a spectrum to be unfolded in each segment area; calculating an opposite angle weighting matrix W; calculating a weighted least square method spectrum unfolding to obtain the yield yj; utilizing a mean value delta 2 of residual sum of squares to judge an imitative effect. The invention adopts a segment clamping manner spectrum unfolding method. The segment clamping manner is characterized by selectively selecting a channel area, in which an characteristic energy spectrum of an element is located, to unfold the spectrum. Through MC numerical simulation, the method has no large effect on spectrum unfolding.

Description

technical field [0001] The invention relates to a method for analyzing and determining the yield by analyzing the spectrum of a formation element logging instrument. Background technique [0002] For formation element logging, the least square method or the improved method of least square method is generally used to solve the spectrum. The types of formation elements calculated by this spectrum analysis method will not be wrong, but for some elements with low content or low sensitivity, the calculation process has large errors. Contents of the invention [0003] The purpose of the present invention is to provide a method for determining the yield by spectrum analysis of a formation element logging instrument, which can basically reflect the types and relative contents of formation elements. [0004] A method for determining production rate by spectrum analysis of formation element logging tools, which is special in that it includes the following steps: [0005] 1) Determ...

Claims

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Application Information

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IPC IPC(8): G06F19/00G01N33/24
Inventor 石文夫张政彬谭红建
Owner XIAN AOHUA ELECTRONICS INSTR