YY-3000B Oil and Rock Comprehensive Evaluation Instrument

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YY-3000B Oil Shale Comprehensive Evaluation Instrument

Working Principle: The principle involves programmed heating of a quantitative sample of oil shale and reservoir rock in a special pyrolysis furnace. This causes the hydrocarbons and kerogen (source rock) in the rock sample to volatilize and crack at different temperature ranges. A carrier gas (H2 or He) is used to physically separate the released hydrocarbons from the rock sample. The carrier gas then carries the hydrocarbons directly into a flame ionization detector (FID) for quantitative detection. The detection results are converted from gas concentration changes into corresponding electrical signals via gas-to-electric conversion. These signals are then amplified and processed by a computer to obtain the content of each hydrocarbon and the peak temperature of the cracked hydrocarbons.

Working Principle:

The principle involves programmatically heating a quantitative sample of source rock and reservoir rock in a special pyrolysis furnace. This causes the hydrocarbons and kerogen (source material) in the rock sample to volatilize and crack within different temperature ranges. A carrier gas (H2 or He) is used to physically separate them from the rock sample, and the carrier gas then carries them directly into a flame ionization detector (FID) for quantitative detection. The detection results are converted from changes in hydrocarbon concentration into corresponding electrical signals, which are then amplified and processed by a computer to obtain the content of each hydrocarbon and the peak temperature of the cracked hydrocarbons.

Applications in geochemical logging include:

① determining reservoir crude oil density and properties;

② evaluating reservoir oil abundance;

③ identifying true and false oil and gas shows:

I. basic parameter judgment method of pyrolysis analysis;

II. derived parameter judgment method of positive pyrolysis analysis;

④ evaluating hydrocarbon source rocks.

INNOVATIVE FEATURES:

I. A rational and practical analytical process was selected and designed. The organic combination of pyrolysis analysis and residual carbon analysis, along with the effective use of imported six-way valves and two-position five-way solenoid valves, resulted in a rational and efficient analytical process. The method fully utilizes the instrument's hardware resources, employing an innovative carbon dioxide filtration device and a simultaneous analysis and cleaning technique, greatly simplifying instrument operation and application. This method is protected by a utility model patent.

II. Multiple technical processing methods are employed to analyze and determine the Tmax of different samples. The main unit uses a large touchscreen display to show the instrument's operating status, while a computer simultaneously displays the instrument's operating spectrum and processes the data. This achieves a dynamic combination of the main unit and the computer.

III. The dual-hydrogen flame ionization detector (FID) is organically combined with a high-efficiency catalytic device using an inner-liner structure. The methane converter is directly mounted on the heating block of the detector and contains a nickel catalyst. It converts the CO and CO2 desorbed from the absorption trap into methane through high-temperature hydrogenation, which is then detected by the hydrogen flame ionization detector. The absorption trap uses a double-cylinder structure made of stainless steel. The outer wall of the furnace body is machined into an arc-shaped groove, and armored heating wires are tightly wound around the outer wall. It contains ground and crushed molecular sieves to adsorb the CO and CO2 generated by high-temperature oxidation and cracking in the oxidation furnace at low temperatures, and then desorb the adsorbed CO and CO2 at high temperatures.

Software Interface

The instrument features a novel, unique, practical, stable, and reliable overall design. The software is user-friendly and meets the analytical needs of both field and laboratory applications. Six different methods for determining the Tmax peak provide more effective analysis methods for various samples. It features a touchscreen interface, host computer control, and remote control capabilities for analysis.