Handheld laser spectrometer for quickly detecting oiliness of rock core on site and detection method

Abstract

The invention belongs to the technical field of energy exploration, and particularly relates to a handheld laser spectrometer for quickly detecting oiliness of a rock core on site and a detection method. The handheld laser spectrometer comprises a rock core, rock core boxes, a controller, a handheld detector and an optical cable, wherein the optical cable internally comprises two strands of optical fibers, namely, an incident optical fiber and a return optical fiber, and laser reflecting plates are arranged on the rock core boxes at the two ends of the rock core respectively; the controller comprises a laser generator, a spectrum analyzer and a distance analyzer, laser generated by the laser generator is transmitted to the handheld detector through the incident optical fiber of the opticalcable, the handheld detector comprises a spectroscope A, a spectrum detection port and a distance detection port, the laser is divided into two beams through the spectroscope A, one beam is irradiated to the rock core from the spectrum detection port to induce the rock core to generate fluorescence, and the fluorescence is captured by the spectrum detection port; the other beam is emitted to thelaser reflecting plate from the distance detection port, and is returned to the distance detection port after being reflected; and the fluorescence and the reflected light of the laser reflecting plate return to the interior of the controller through the return optical fiber of the optical cable.

Description

technical field [0001] The invention belongs to the technical field of energy exploration, and in particular relates to a hand-held laser spectrometer and a detection method for rapid detection of oiliness in on-site rock cores. Background technique [0002] During the development of oil shale, shale oil, and oil-bearing sandstone resources, it is necessary to detect the main composition parameters of oil shale samples in real time, such as oil content, TOC, and oil weight ratio, to evaluate the grade of the reservoir and determine the effectiveness Mining rock formation location. However, the laboratory sample measurement method is still used at present, the process is cumbersome, the efficiency is low, and it cannot meet the needs of rapid and large-scale detection on site. [0003] In the past, fluorescence microphotography was only able to perform fluorescence photography on prepared thin sections, and the photos provided could not reflect the true oil-bearing propertie...

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Problems solved by technology

[0004] The fluorescence display of oily mudstone on the mercury lamp fluorescence mud logging instrument is extremely weak, so the mercury lamp fluorescence mud logging instrument cannot detect oily mudstone samples well

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