Method and system for simultaneous measurement of porosity of oil-containing compact rock

The embodiment of the invention provides an oil-containing compact rock porosity simultaneous measurement method and system.The method comprises the steps that a prepared oil-containing compact rock sample is obtained, the sample is pretreated, and a to-be-measured sample is obtained; calculating the apparent volume of the to-be-detected sample, the volume of retained water, the volume of retained oil and the pore volume of residual communicated pores; and obtaining the total porosity of the oil-containing compact rock sample based on the apparent volume, the volume of the retained water, the volume of the retained oil and the pore volume of the residual communicated pores. The embodiment of the invention provides a two-dimensional nuclear magnetism and He gas measuring method porosity simultaneous measurement technology, accurate measurement of total porosity and nondestructive testing of an oil-containing compact sample can be realized under the condition of no washing oil, and the high-pressure He gas meas