The Method Research Of Identification And Extraction Of Oil Gravity And Magnetic Anomalies

The extraction of oil and gas anomalies is to identify and extract slightly negative gravity anomalies and high-frequency low-amplitude magnetic anomalies under strong structural background,the various basement structure and various information of interference on weak anomalies,making oil anomalies difficult to abnormal identify, even using some effective methods are also difficult to identify the gravity and magnetic anomalies.Now how effective to extract micro-gravity and magnetic anomalies information from strong regional structure of oil and gas reservoirs becoming a pressing problem Therefore, it is urgent to research combination technology based on gravity magnetic anomalies accumulation model,and forecast oil and gas prospect to provide theory basis and technical support of using micro-gravity and magnetic anomaly information directly find oil and gas.This paper summarizes the basic characteristics of various types of oil and gas reservoirs, based on the establishment of reservoir model,due to various oil and gas accumulation model laws of gravity and magnetic anomalies.Using series recognition methods to extracte gravity and magnetic anomaly information,Formed a extraction and recognition combination technology based on a oil and gas reservoirs ccumulation model and anomaly information.Based on identification oil and gas Anomalies, using integrated assessment software ang combined with seismic, drilling, geochemical data to optimize oil and gas anomalies.By processing and analyzing Sebei work area to verify correctness and practicality of this combination technology.