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A Method for Adaptive Adjustment of Regional Interpretation Parameters

A technology for self-adaptive adjustment and interpretation of parameters, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of excessive energy and machine time, affecting the reliability of logging interpretation results, and mineral interpretation models that cannot fully describe the underground Geological conditions and other issues to achieve the effect of improving quality and reducing program debugging time

Inactive Publication Date: 2016-11-30
刘洋
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Problems solved by technology

However, the above-mentioned optimized logging interpretation technology has the following two problems: (1) The mineral interpretation model cannot fully describe the subsurface geological conditions, and there may be other minerals that may affect the logging response. Fixed regional interpretation parameters will affect the reliability of logging interpretation results; (2) Since each logging value, initial value of reservoir parameters, regional interpretation parameter values ​​and errors are combined into an organic whole, the relationship between them Interactions make debugging of interpretation parameters difficult, and data processing takes far more energy and machine time than conventional analysis programs

Method used

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Embodiment Construction

[0017] figure 1 It is a flowchart of a method for adaptively adjusting regional interpretation parameters provided by the present invention, and the steps of the method are as follows.

[0018] Step (1) Select the regional interpretation parameters according to the provided stratigraphic information, see the table below, and establish the logging interpretation model.

[0019] 　

quartz

dolomite

Calcite

muddy

porosity

DEN

2.66

2.87

2.71

2.42（2.2-2.8）

1

DT

55.5

43.5

47-49

125（70-150）

189

CN

-0.02

0.01

-0.01

0.44（0.25-0.5）

1

GR

4

2

7

200（150-200）

15

PE

1.81

3.14

5.81

7

0.36

[0020] Step (2) Select a set of interpretation parameters from the table. Based on the interpretation model, response equation, interpretation parameters, initial values ​​of reservoir parameters and objective function, an optimal data processing is performed on the ...

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Abstract

A method for adaptively adjusting regional interpretation parameters based on optimal logging interpretation technology. Its features include: A. Determining the name of the mineral components in the formation and the value range of the corresponding regional interpretation parameters; B. Obtaining the adjustment order and adjustment direction of the muddy regional interpretation parameters; C. Automatically based on the adjustment order and adjustment direction Adjust the shale regional interpretation parameters; D. The termination condition of the adjustment is that the difference between the theoretical calculation curve value and the actual logging value reaches the minimum or the shale interpretation parameter value exceeds the given range. This method can not only reduce the debugging time of regional interpretation parameters, but also improve the quality of optimal logging interpretation results.

Description

technical field [0001] The invention relates to a method for adaptively adjusting regional interpretation parameters based on optimized well logging interpretation technology, which is characterized in that it can reduce the debugging difficulty of regional interpretation parameters in optimization processing software and improve the quality of interpretation results. Background technique [0002] At present, the optimal logging interpretation technology is based on the generalized inversion theory of geophysics, based on the actual logging values ​​that reflect the formation characteristics after environmental impact correction, and according to the appropriate interpretation model and logging response equation, through a reasonably selected area The corresponding theoretical logging values ​​are back-calculated and compared with the actual logging values. The objective function is established according to the non-linear weighted least square principle, and the unknown reser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 刘洋
Owner 刘洋