Abstract: A compact rock pyrolytic analysis and evaluation instrument comprises a sample introduction system, a pyrolytic furnace, a bypass system, a total hydrocarbon amount and methane content analysis system, a signal acquisition control system and a computer. The pyrolytic furnace is respectively connected with the sample introduction system and the bypass system, the total hydrocarbon amount and methane content analysis system is connected with the bypass system, the signal acquisition control system is used for controlling and connecting the total hydrocarbon amount and methane content analysis system, and meanwhile, the signal acquisition control system is communicated with the computer. The disclosure simultaneously detects the total amount of hydrocarbons produced by rock pyrolysis and the content of methane gas produced by rock pyrolysis, and the obtained data are reliable.

Abstract: A compact rock pyrolytic analysis and evaluation instrument comprises a sample introduction system, a pyrolytic furnace, a bypass system, a total hydrocarbon amount and methane content analysis system, a signal acquisition control system and a computer. The pyrolytic furnace is respectively connected with the sample introduction system and the bypass system, the total hydrocarbon amount and methane content analysis system is connected with the bypass system, the signal acquisition control system is used for controlling and connecting the total hydrocarbon amount and methane content analysis system, and meanwhile, the signal acquisition control system is communicated with the computer. The disclosure simultaneously detects the total amount of hydrocarbons produced by rock pyrolysis and the content of methane gas produced by rock pyrolysis, and the obtained data are reliable.

Abstract: A method and a system for measuring the pore structure of tight sandstone are provided. The method comprises the following steps: carrying out the desorption experiment of a core sample saturated by a specific gas containing isotope element to obtain the pressure of the specific gas and the total isotope ratio at each sampling moment; acquiring a single isotope ratio of each pore diameter at each sampling moment according to a physical model containing pore diameter parameter and the pressure of the specific gas at each sampling moment; and obtaining the proportion of a pore of each pore diameter in the core sample. The method and the system for measuring the pore structure of the tight sandstone provided by the disclosure can quickly obtain the pore distribution of the tight sandstone without damaging a sample.