Analysis Of Seismic Response Characteristics And Sweet-spots Prediction Of Tight Reservoirs

At present,unconventional oil and gas with huge resource potential has become a new field of oil and gas exploration and development.Global unconventional oil and gas exploration and development has entered an active period,and 22% of total oil and gas production comes from tight oil,tight gas,shale oil,shale gas,etc.Unconventional oil and gas reservoirs.Unconventional oil and gas reservoirs have the main characteristics of integration of source and reservoir,diverse lithology,tight and low permeability,which bring many challenges to oil and gas exploration and seismic exploration technology.For different types of dense oil desserts,a targeted "dessert" prediction method is proposed and established to reduce the uncertainty of the prediction of dense oil "desserts" and improve the reliability and effectiveness of dessert predictions.One of the hotspots in research and application of earthquake prediction technology.This research is based on the technical requirements of the dessert seismic response analysis and the establishment of an effective dessert seismic prediction method in related scientific research projects.It focuses on the two major controlling factors of tight reservoirs in the study area: fractures and changes in lithology and physical properties.A comprehensive study focusing on seismic prediction methods and applications is given.Rock physical analysis,forward modeling method of seismic attribute modeling were used in the study,combined with logging and seismic data,summarized the logging response characteristics and seismic response characteristics of different types of tight reservoirs,and established various types of Evaluation criteria and prediction parameters of dessert reservoirs;using a variety of seismic pre-stack and post-stack attribute analysis and inversion methods to identify and predict the distribution of tight oil desserts,providing a scientific basis for the demonstration of the key exploration well MAY1 in the study area;In terms of fracture prediction,developed a new high-precision coherent attribute analysis method,combined with other seismic attribute analysis methods,to improve the reliability of fracture prediction in the study area;Finally,a set of seismic method technologies suitable for the prediction of "sweet spots" in tight reservoirs And the application process has important reference value for the exploration and development of tight reservoirs in the research area and similar areas.