Hydrocarbon Source Rocks Of Oil And Gas Reservoir Evaluation Simulation System Design And Software Preliminary,

The main reason declining the reliability of oil and gas evaluation maybe the genetic method based on reservoir formation not tightly connected with the reservoir type. Based on analyzing the progress of resources evaluation methods used home and aboard, the key factor declined the reliability of oil and gas resources evaluation is concluded, which is the separate of genetic method of oil and gas resources evaluation and the genetic type of specific reservoir. In order to improve the reliability of resources evaluation, the reservoir types integrated with genesis of oil and gas is established. According to the geological analysis of reservoirs over the world and the study of model experiments, it can be concluded that different reservoir has its own proceeding of hydrocarbon generation, hydrocarbon expulsion, hydrocarbon migration-accumulation. And the oil and gas reservoir can be divided into three classifications, which are: Reservoir in source rock; Reservoir near by source rock; Reservoir above or beside source rock. Firstly, the evaluation and modeling system of the reservoir in source rock has been built. According to the geological analysis and the study of model experiments of fractured pool in argillite, it抯 geological conditions have been found, they are, the source rock benefit to procedure fracture, fracture, reservoir, cap formation, trap and conservation condition. There are four stages to form fractured pool in argillite, which are (1) the sedimentation stage of the source rock, which is benefit to procedure fracture;(2) the stage of compaction with water disposal and then hydrocarbon generation;(3) the stage of fracture forming and hydrocarbon migration and accumulation;(4) the destructive stage. Integrated forward modeling with statistical analysis in geological modeling, math model and software is the characters of this system. The details are as follows, II 2 1) In geological modeling, the main stages of the forming of source rock is specified, that is, the sedimentation stage of the source rock, which is benefit to procedure fracture, the stage of compaction with water disposal and then hydrocarbon generation, the stage of fracture forming and hydrocarbon accumulation, the stage of destructive. And the source rock benefit to procedure fracture, fracture, reservoirs, cap formation, trap and conservation conditions are made basic reference condition. 2) According to the basic forming procedures of reservoir, the math models and evaluation models are set up. The math models are made up of three-dimensions model, deposition-elevation procedures, water disposal procedures, transformation of hydrocarbon source rock and measurement of resources. And the evaluation models are made up of forward and backward inference and decision analysis. 3) The software system is designed with C+眀uilder 4, cooperated with mathematics software Matlab, and its database is designed and managed with DataBase 4 plugged in C++builder 4, while OpenGL techniques is used to display the result in three-dimension.