Geochemical logging instrumentIt is a key analytical equipment used in the fields of petroleum exploration, geological research, and environmental monitoring. Its core function is to evaluate the distribution of oil and gas reservoirs, reservoir quality, and geological structure by analyzing the geochemical properties of underground rock layers.
Geochemical logging instrumentData analysis is a systematic and precise process that mainly involves the following steps and key points:
Data acquisition and transmission: The geochemical logging instrument excites the elements in the sample (such as using X-ray fluorescence, neutron activation analysis, etc.) to emit characteristic radiation, which is captured by the detector and converted into electrical signals. Subsequently, these electrical signals are transmitted to the computer system to form raw spectral data.
Data preprocessing: Prior to data analysis, it is necessary to preprocess the raw spectral data, including data cleaning, normalization, and other operations, to eliminate the influence of noise and outliers, and improve the accuracy and reliability of the data.
Quantitative analysis and mineral composition identification: Using specialized software to analyze preprocessed spectral data and determine the types and contents of elements contained in the sample. This includes quantitative analysis of elements, identification of mineral composition, and geochemical characteristics of rock formations. For example, by comparing sample databases, different mineral compositions in rocks can be identified and their relative contents can be determined.
Key parameter acquisition: The geochemical logging instrument can simultaneously obtain multiple key parameters in one experiment, such as S0 (gaseous hydrocarbons), S1 (liquid hydrocarbons), S2 (cracked hydrocarbons), Tmax (cracking peak temperature), etc. These parameters comprehensively reflect the oil and gas characteristics of the rock formation and are of great significance for evaluating the scale and production capacity of the reservoir.
Report generation and interpretation: All data is organized and detailed geological analysis reports are generated. These reports not only provide geochemical parameters of the samples, but also interpret and apply the analysis results based on geological background knowledge and practical engineering needs. For example, based on geochemical parameters, the maturity, migration path, and reservoir conditions of oil source rocks can be determined, providing strong support for oil and gas exploration and development.
Multi technology integration and comprehensive analysis: The data analysis of geochemical logging instruments is often combined with other logging techniques (such as gas logging, rock debris logging, etc.) and logging data for comprehensive analysis. Through the integration of multiple technologies, the trend of geological changes, abnormal areas, and potential oil and gas reservoirs can be more accurately identified, improving exploration efficiency and success rate.