Detection And Analysis Of Light Hydrocarbons From The Rock

Light hydrocarbon technology is a technical means which can carry out the qualitative and quantitative analysis of oil and gas in CH4~C9H20 a total of 103 monomer hydrocarbon. The physic chemical properties of the individual components of the light hydrocarbons are not the same. Therefore, we can analyze the composition and content of the crude oil characteristics, rational use of test data, the interpretation of oil- related information to evaluate oil and gas reservoirs.Light hydrocarbon composition containing n-alkanes, isoparaffin, cycloalkane, aromatic hydrocarbon four components, It is in the highest content in the oil, the most abundant component, the most obvious change. Concentration of each parameter or the relative ratio of many parameter combinations contains abundant geological information, can show the reservoir problems and reflect the oil reservoir information. But the technology has not been widely used in the field, the reason is: first, the influence of test conditions. Methods of sampling and pretreatment method are different, can cause the detection results of different. Second, the data analysis is difficult, too much dependence on a few experts experience. Limit the application and popularization of technology.This Research based on the existing light hydrocarbon analysis technique, combined with gas chromatography detection methods, standardized light hydrocarbon detection processes. Summarize the experience of experts prepared light hydrocarbon data analysis softwareFirst, clear the selection of samples and pretreatment means. Comparing the effects of different pretreatment conditions on the analysis results, selection of pretreatment of optimum scheme.Secondly, Optimizing the software automatically naming function. On the basis of the existing, improved naming formula algorithm to improve the accuracy of automatic naming.Finally, the preparation of the light hydrocarbon data analysis software. It has oil-water interface is divided. Oil and gas distinguish and other functions. After practice in the oil field, According to the principle of light hydrocarbon to select the optimal analysis parameters and Improve the interpretation of the template, forming a simple and practical light hydrocarbon data analysis software.This method has been in practice in the field of oil, has proven to be effective. Not only improve the efficiency and accuracy of data analysis, but also to promote the application of light hydrocarbons in reservoir evaluation.