Determination of Hydrocarbon Compounds in Rocks by Ultrasonic Extraction Gas Chromatography-Mass Spectrometry

Abstract

Abstract The convenient, quick and accurate detection of hydrocarbon compounds in rocks and the establishment of the detection method of hydrocarbon compounds in rocks are of great significance for the study of hydrocarbon compounds in rocks. It can provide effective parameters for the study of oil-source source correlation, sedimentary environment Identification and source layer determination. In this paper, We use conventional extraction (cable extraction) and ultrasonic extraction to extract hydrocarbon compounds from rocks respectively, using Gas chromatography mass spectrometer to analysis the extracts. Then we choose some of the more commonly used in oil and gas geochemical parameters for comparison, by comparing these parameters to compare the advantages and disadvantages and the difference of two methods, so as to analyze the extraction efficiency of ultrasonic extraction method, and constantly optimize the experimental conditions by experiments. By statistics and comparison of the geochemical parameters obtained by the two extraction methods, it can be found that ultrasonic extraction method can not only meet the demand of routine analysis, but also can get some parameters which conventional extraction method can't get. Ultrasonic extraction method has the advantages of low sample quantity, fast processing speed and high analytical efficiency. the analysis results are more accurate. Therefore, ultrasonic extraction gas chromatography mass spectrometry can effectively replace conventional extraction methods to analyze and process rock samples, obtain more accurate geochemical parameters and make the results of oil-source correlation more reliable, which has better geological significance.