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Method for quick quantitative analysis of gas content during the process of petroleum exploration and well drilling by using optical spectrum analyzer

A spectrum analyzer and quantitative analysis technology, applied in color/spectral characteristic measurement, material analysis through optical means, material analysis, etc., can solve the problems of many factors affecting quantitative results, slow analysis speed, low accuracy, etc., to achieve Strong adaptability to working environment, rapid analysis and high sensitivity

Inactive Publication Date: 2006-02-08
HAICHENG PETRO CHEM INSTR FACTORY
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Problems solved by technology

However, the general spectrometer has strict requirements on the sample and working environment, and the software operation is complicated, so it must be operated by well-trained professionals; the quantitative method has great limitations, and it cannot accurately quantify the multi-component mixed gas with overlapping absorption lines. On-line multi-component gas analysis has not yet been applied to the oil exploration logging site at home and abroad
[0005] The purpose of the present invention is to solve the problems of intermittent sampling, slow analysis speed, low accuracy, and many factors affecting quantitative results in the existing gas logging method of mud logging due to the large drilling speed increase.

Method used

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  • Method for quick quantitative analysis of gas content during the process of petroleum exploration and well drilling by using optical spectrum analyzer

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Embodiment Construction

[0015] The vacuum pump (or diaphragm pump) 6 draws the gas desorbed during the drilling process in through port A, and after dust removal and drying treatment by the sample processing system 7, it is introduced into the flow stabilization device 8, and the gas with a stable flow rate enters the gas circulation cell 3 from port B to obtain The sample gas is continuously emptied from the C port. The infrared light emitted by the light source 1 is transformed into interference light by the interferometer 2. The interference light irradiates the sample gas in the gas flow cell 3, and the interferogram is obtained by the detector 4. The obtained interferogram is obtained by The spectral analysis workstation 5 performs mathematical transformation to obtain the infrared spectrum of the sample.

[0016] The spectral analysis workstation 5 includes a control and data acquisition module 5-1, a data preprocessing module 5-2, a qualitative and quantitative analysis module 5-3, and a displa...

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Abstract

The invention relates to a method for fast quantity analyzing the gas content during oil exploration by a spectrum analyzer in the field of oil exploration gas log technology. The tested gas enters into the gas flow cell after processing and is radiated by infraction and tested by the detector, it is computed in the spectrum analysis working station to obtain the infrared spectrum of the sample and the content of each group.

Description

technical field [0001] The invention relates to a mud logging method in the process of oil exploration, in particular to a method for quickly and quantitatively analyzing the gas content in the process of oil exploration and drilling with a spectrum analyzer. Background technique [0002] In the logging process of petroleum geological exploration, gas logging is a routine project of geological logging, which is used to analyze the gas content carried in the mud, find oil and gas shows in time through the gas logging analysis results, and predict engineering accidents, etc. The hydrocarbon detection has been using gas chromatography. However, gas chromatography methods are often intermittent sampling, slow analysis speed, and low precision. The gas chromatograph also needs to be calibrated regularly, the operation is complicated, and the accuracy of instrument calibration has a great influence on the quantitative results. [0003] With the further improvement of drilling te...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G01N21/45G01N21/3504
Inventor 杨仁政
Owner HAICHENG PETRO CHEM INSTR FACTORY
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