Rock sample hydrocarbon generation kinetics high pressure thermal simulation experimental method and device

Abstract

The invention discloses a hydrocarbon dynamics high pressure thermal simulation experiment method and the device for the rock sample, which belongs to the rock oil and natural gas earth chemical experiment research technology field. The method includes the sealing sample into the gold pipe, putting the gold pipe into the high pressure kettle, putting many high pressure kettle into one pyrolyzing oven, starting the water adding pressure and stabilized voltage system, the pyrolyzing oven, picking out one high-pressure kettle and cooling quickly in different temperature point, closing the pyrolyzing oven and water adding pressure and stabilized voltage system until the high-pressure kettle with sample is picked out, then opening the high-pressure kettle and analysis of the sample; the device is made up of the water adding pressure and stabilized voltage system, the heating system and the controlling system. The water adding pressure and stabilized voltage system includes the water tank, the high pressure water pump and the stabilized voltage valve. The heating system includes the pyrolyzing oven, many high-pressure kettles and circle fan. The controlling system includes the central computer, the pressure controller, the pressure recorder, the temperature controller and multi-way temperature detection recorder. The invention can be used in analysis of the kerogen or rock sample.

Description

technical field [0001] The present invention relates to petroleum and natural gas geochemical experimental research technology, more specifically, it relates to a rock sample hydrocarbon generation dynamics high-pressure thermal simulation experimental method, and the present invention also relates to an experimental device for realizing the above-mentioned method. Background technique [0002] In the field of petroleum and natural gas geochemistry, it is necessary to use thermal simulation experiments to study the quantity and composition of hydrocarbons produced by geological samples under certain temperature and pressure. In the thermal simulation experiment research of hydrocarbon generation kinetics, it is especially necessary to accurately control the temperature and pressure of the experiment. At present, the thermal simulation experiments with a pressure of more than 100MPa at home and abroad are all realized by a piston press, that is, the rock sample is placed in a...

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Problems solved by technology

Such a device has the following disadvantages: (1) due to the need to prevent gas leakage, the friction between the piston and the metal cylinder is quite large, which leads to a low pressure on the sample; (2) in many experiments, Due to the change of the friction between the above-mentioned piston and the metal cylinder, the actual pressure of each experimental sample is not completely consistent; (3) For the thermal simulation experiment of hydrocarbon generation kinetics, a hydrocarbon generation curve needs 10 temperature points , because the piston pressurization system can only hold one sample, and 10 experiments need to be done at 10 temperature points, the workload is huge and the efficiency is very low

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