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Method for recognizing reservoir fluid property by adopting three-dimensional quantitative fluorescent longitudinal parametric variation trend

A technology for reservoir fluid properties and three-dimensional quantification, which is applied in the fields of fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of complex calculation of oil content, insufficient use of three-dimensional quantitative fluorescence mud logging, and difficult operation, etc., to achieve timely and accurate judgment , good application and promotion prospects, and the effect of improving the level and compliance rate

Inactive Publication Date: 2014-10-01
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

However, the calculation of the equivalent oil content in these methods is relatively complicated and requires separate software calculations, which is not easy to operate
In addition, the remaining calculation parameters (contrast level, oiliness index, etc.) of 3D quantitative fluorescence mud logging are not fully used

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  • Method for recognizing reservoir fluid property by adopting three-dimensional quantitative fluorescent longitudinal parametric variation trend
  • Method for recognizing reservoir fluid property by adopting three-dimensional quantitative fluorescent longitudinal parametric variation trend
  • Method for recognizing reservoir fluid property by adopting three-dimensional quantitative fluorescent longitudinal parametric variation trend

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Embodiment Construction

[0018] The method of the present invention for identifying reservoir fluid properties using three-dimensional quantitative fluorescence parameters is based on the three-dimensional quantitative fluorescence analysis parameters such as oil concentration C and Compared with the N parameter, a method for identifying the trend of the parameter change of the reservoir fluid properties is proposed. Among them, the oil concentration (C) refers to the oil concentration of the fluorescent substance in the unit sample, which reflects the abundance of oil and gas in the tested sample, in mg / l; the contrast level (N) refers to the concentration of the fluorescent substance in the unit sample. Corresponding fluorescence series contrast level.

[0019] like figure 2 As shown, the method for identifying reservoir fluid properties using three-dimensional quantitative fluorescence parameters described in an embodiment of the present invention includes the following steps:

[0020] Step 1, c...

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Abstract

The invention discloses a method for recognizing reservoir fluid properties by adopting a three-dimensional quantitative fluorescent longitudinal parametric variation trend. The method comprises the following steps: comparing and analyzing oiliness concentration and contrast level data in collected three-dimensional quantitative fluorogram data and a corresponding oil testing conclusion and a well logging interpretation result and establishing the interpretation standards of judging the reservoir fluid properties; collecting and analyzing specimens to be recognized to obtain the three-dimensional quantitative fluorogram data of the specimens to be recognized; determining the reservoir fluid properties by contrasting the oiliness concentration and the comparison level in the three-dimensional quantitative fluorogram data of the specimens to be recognized with the interpretation standards on the basis of the variation trend of well depths. According to the invention, when the method is applied in the Bohai oilfield, the interpretation coincidence rate can reach 89.5%, and the level and the coincidence rate of the comprehensive interpretation fluid properties in well logging fields can be greatly improved; the method is simple, practical, easy to operate and timely and accurate in judgment, and has a very good application and popularization prospect.

Description

technical field [0001] The invention relates to the technical field of geological logging interpretation and evaluation for petroleum exploration, in particular to a method for identifying reservoir fluid properties by using three-dimensional quantitative fluorescence parameters. Background technique [0002] The so-called fluorescence means that under the irradiation of ultraviolet rays, the fluorescent molecules in crude oil will absorb some energy, temporarily making the fluorescent molecules reach a high-energy and unstable state, and when these fluorescent molecules return to the original state from the unstable state, they will be in the form of The excess energy is released in the form of light waves, a property of oil called fluorescence. Three-dimensional quantitative fluorescence logging technology is to irradiate samples (including any one or more of rock core, wall core, and cuttings) with ultraviolet rays of different wavelengths. After absorbing the excitation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 胡云尚锁贵周心怀罗鹏李战奎刘新新马金鑫王建立
Owner CHINA NAT OFFSHORE OIL CORP
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