Three-dimensional fluorescence analyzer(LH-SDYG)
1)Product principle
LH series of fluorescence analyzers can be applied to detect fluorescent material in multi-field. In the field of geological exploration, it is the on-site technique to analyze fluorescence spectrum of drilling cores, cuttings, sidewall coring and drilling fluid quantificationally. By using fluorescence property of crude oil and measuring spectrum of sample, parameters such as oil concentration, series level and oily index can be gotten. The software has the function of spectrogram identification, which can remove the drilling fluid's pollution intelligently. The analyzers can be applied on-site to discover oil and gas show timely, distinguish true or false show accurately, interpret and evaluate oil reservoir rapidly, particularly the light oil reservoir.
LH-SDYG is based on LH-EDYG and separates the exciting light by grating monochromator, which can enable exciting light of different wavelength to irradiate oil samples, so the 3-D spectrum and fingerprint diagram can be gotten. Abundant information of oil sample can achieve precise identification of reservoir and quantitative analysis.
LH-SDYG uses the separation design innovatively, which separates the optical path and circuit completely. It can avoid their interference to each other and enhance stability, repeatability and portability of the analyzer. The intelligent software system has the unique function of spectrogram identification which can determine sample polluted degree by drilling fluid additives, and eliminate its interference to restore the spectra of crude oil.
2)Main technical parameters
◎Light source：150w xenon lamp
◎Excitation wavelength：200-700 nm
◎Emission wavelength：200-700 nm
◎Accuracy of wavelength：±1 nm
◎Repeatability of wavelength：±1 nm
◎Cuvette：Fluorescent quartz type, with sealed protective shell
◎Sensitivity：0.01 mg/L
◎Cycle time of analysis：30 s
◎Size and weight：660×300×315 mm, 32 kg (Optical path unit) /380×300×140 mm, 8 kg (Circuit unit)
3)Technical advantages
★ Small size, light weight, convenient carrying, suitable for logging site and offshore platform.
★ No need of preheating after power on, sample analysis cycle is very short: 20 seconds for 2-D; 30 seconds for 3-D.
★ The cold light source is low-tension, which can run for long hours continuously. Its service life is up to 3000-5000 hours.
★ Cooled CCD Optical detector can receive and analyze full wavelength range of oil fluorescence, discover and distinguish light oil reservoir effectively.
★ The optical fiber transmission system can reduce noise, improve the SNR and make the analyzer easy to be maintained.
★ The quartz cuvette with sealed protective shell can prevent the sample from volatilizing and improve the repeatability.
★ The intelligent software system is of powerful function, which contains gathering, analysis, interpretation, report forms, print, etc. By the unique function of spectrogram identification, the software can eliminate the interference of drilling additives or mixed oil, which helps us distinguish true or false oil shows accurately.
Three-dimensional fluorescence spectrum analyzer
Three-dimensional fluorescence spectrum analyzer
