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A Method for Determining Oil Quality and Fluid Type Using 3D Quantitative Fluorescence Spectrum Derived Parameters

A three-dimensional quantitative and map technology, applied in the field of drilling, can solve the problem that the matrix data is not fully utilized, and achieve the effect of improving the accuracy.

Active Publication Date: 2020-09-15
CNOOC TIANJIN BRANCH +2
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Problems solved by technology

At present, the interpretation of 3D quantitative fluorescence mud logging mainly depends on the three parameters of excitation wavelength, emission wavelength and oil concentration. The matrix data in the original 3D quantitative fluorescence map data has not been fully utilized, and the accuracy of 3D quantitative fluorescence mud logging interpretation is still relatively high. room for improvement

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  • A Method for Determining Oil Quality and Fluid Type Using 3D Quantitative Fluorescence Spectrum Derived Parameters
  • A Method for Determining Oil Quality and Fluid Type Using 3D Quantitative Fluorescence Spectrum Derived Parameters
  • A Method for Determining Oil Quality and Fluid Type Using 3D Quantitative Fluorescence Spectrum Derived Parameters

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0019] The single-point quantitative fluorescence analysis uses a fixed excitation wavelength (254nm) and a fixed emission wavelength (320nm) for fluorescence testing, while the two-dimensional quantitative fluorescence analysis is based on the working principle of the single-point quantitative fluorescence logging instrument. , change the emission wavelength from the original fixed 320nm light wave to 260-800nm ​​for wavelength scanning, and give the two-dimensional fluorescence map of each scan (the abscissa is the emission wavelength, and the ordinate is the fluorescence intensity of the rock sample). Similar to two-dimensional quantitative fluorescence analysis, three-dimensional quantitative fluorescence also uses spectroscopic technology for excitation wavelengths. When the sample is irradiated with different wavelengths of excitation light...

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Abstract

The invention relates to a method using three-dimensional quantitative fluorescence spectrum derived parameters to judge oil quality and fluid types. The method includes the steps of firstly, using athree-dimensional quantitative fluorescence detector to detect rock samples collected during drilling to obtain original three-dimensional quantitative fluorescence spectrum data; secondly, using theoriginal three-dimensional quantitative fluorescence spectrum data to obtain the three-dimensional quantitative fluorescence spectrum derived parameters; thirdly, according to the three-dimensional quantitative fluorescence spectrum derived parameters and the accumulated three-dimensional quantitative fluorescence spectrum historical data of the oil field, using statistical inductive method to build a diagonal included-angle method chart, an actually-measured oil containing concentration and oil-water change rate interpretation chart and a waterline deviation and standard oil sample deviationinterpretation chart. The method has the advantages that by mining three-dimensional quantitative fluorescence spectrum information, the spectrum feature identification parameters and the interpretation method are formed, and accordingly the judging accuracy of the oil quality and fluid types is increased.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a method for judging oil quality and fluid type by using parameters derived from three-dimensional quantitative fluorescence spectrum. Background technique [0002] The three-dimensional quantitative fluorescence logging technology is to use the characteristics that aromatic hydrocarbons and other components contained in petroleum can be excited and emit fluorescence under ultraviolet light irradiation, and quantitatively calculate the oil concentration, An optical analysis method for judging the properties of fluids. The 3D quantitative fluorescence mud logging technology is developed on the basis of the 2D quantitative fluorescence mud logging technology, and it is the development and innovation of the 2D quantitative fluorescence mud logging technology. The obtained information of hydrocarbons in the formation is richer, the map is more intuitive, and it can better reflect t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6456
Inventor 胡云谭忠健毛敏马金鑫刘坤张建斌倪朋勃夏震于本志赵梦
Owner CNOOC TIANJIN BRANCH
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