Identification Of Most Productive Zones In Kazkara Deposit Through Integrated Reservoir Characterization

The thesis presents in detail the reservoir characterization starting from the application of AVO interpretation for anomalies in wells of Kazkara field and the deterministic inversion in pre-stack data volume.The work goes from collection of data such as open-hole logs,core information,formation rocks,and seismic volumes to petrophysical interpretation,seismic data processing,AVO analysis,seismic inversion and result interpretation.I will describe the application of all principles and methods.Following the workflow which is shown in chapter 2,First,I will give a briefly introduction of the general information available from the wells and the field,The second part is edits logs,mainly of Density(RHOB),Neutron(NPHI),P-wave Compressional(DTC)and S-wave Share(DTS).After logs edit,petrophysical properties like lithology,porosities,water saturation and the lithofacies are determined.Finally,an elastic and petrophysical properties analysis is performed using cross-plots and the results of these analyses are correlated with seismic attributes and can do an AVO interpretation to later achieve a seismic inversion.3D seismic survey is the undisputed leader among tools of identifying potential exploration targets and reservoir characterization.These surveys explore large subsurface volumes to help oil and gas companies map geological structures and select drilling locations.The results of seismic survey are seismic reflection data which carry subsurface information and information beyond reflector location.Every reflection changes the information because of the amplitude change of received wave.The property controlling this change produces at the interface with impedance contrast.The information of seismic reflection amplitude can be used for an inversion to determine the relative impedance of the media on both sides of the interface.Mentioned methods of the of thesis with specific details in areas as geology,geophysicsand petrophysics can determine: structural and production properties of reservoir rocks to obtain horizons and layers useful for future production or evaluation reserves team works on the field,in case of research of the geological structure of the reservoir can pursue trend and trace the the sedimentation and structure what can be useful while selection drilling areas.The results obtained can be used to further calculate the reserves and identify the most productive areas for production.Reservoir characterization is made by correlating seismic properties obtained with values measured in wells and extended wells.It's a process that helps fill our knowledge gaps of properties between wells.