Rock oil-bearing grade judging method based on laser induced breakdown spectroscopy
A laser-induced breakdown and rock oil-bearing technology, which is applied in thermal excitation analysis, material excitation analysis, and material analysis by optical means. The effect of accurate judgment, reducing time, improving efficiency and accuracy
Inactive Publication Date: 2016-08-17
YANGTZE UNIVERSITY
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Problems solved by technology
However, as the oilfield enters the exploration stage of subtle oil and gas reservoirs, oil, gas and water interact frequently, and it has become difficult to describe them by visual observation.
In addition, on-site observation with the naked eye is often subject to the subjective influence of the describer, which makes the division of oil grades inaccurate
The instrumental measurement methods for judging the oil content level of rocks mainly include geochemical mud logging, well logging and oil saturation analysis, etc., but these three methods are costly, slow, and not very accurate
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[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the invention.
[0017] The invention provides a method for judging the oil level of rocks based on laser-induced breakdown spectroscopy, such as figure 1 As shown, the method for judging the oil level of rocks based on laser-induced breakdown spectroscopy comprises the following steps:
[0018] S1. Collect rock samples of different oil-containing grades, and use laser-induced breakdown spectrometer to measure the intensity values of molecular chain spectral lines on the surface of rock samples of different oil-containing grades;
[0019] Among them, such as figure 2 As shown, the step S1 includes...
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The invention discloses a rock oil-bearing grade judging method based on laser induced breakdown spectroscopy. By conducting laser induced breakdown spectroscopy measurement on the surface of a rock sample, the relationship between the molecular chain spectral line intensity value of all measurement points on the surface of the rock sample and the oil-bearing grade of the rock sample is obtained, a training structure is generated, and then the molecular chain spectral line intensity value of all measurement points on the surface of the rock sample to be detected is substituted into the training structure to judge the oil-bearing grade of the rock sample to be detected. By the adoption of the method, the oil-bearing grade of the rock sample to be detected can be accurately judged, time for judging the oil-bearing grade of the rock sample can be reduced greatly, and rock sample oil-bearing grade judging efficiency and accuracy are improved. The method can be used for online judgment and measurement of the oil-bearing grade of the rock sample, and accurate judgment of the oil-bearing grade of rock can be achieved effectively and quickly.
Description
technical field [0001] The invention relates to the technical field of judging the oil content level of rocks, in particular to a method for judging the oil content level of rocks based on laser-induced breakdown spectroscopy. Background technique [0002] The oil level of rocks can be divided into six levels: oil-saturated, oil-rich, oil-soaked, oil-spotted, oil-stained, and fluorescent. There is a certain correlation between the oil content level of rocks and the liquid production properties and production capacity of the reservoir, which can more accurately reflect the storage characteristics of oil and gas. Therefore, it is of great significance to accurately and quickly judge the oil level of rocks in oil exploration. [0003] The artificial method of judging the oil level of rocks is described by human visual observation. However, as the oilfield enters the exploration stage of subtle oil and gas reservoirs, oil, gas and water interact frequently, and it has become d...
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IPC IPC(8): G01N21/71
CPCG01N21/718
Inventor 王阳恩徐大海陈奇
Owner YANGTZE UNIVERSITY