Integrated Studies By Reservoir Geology,Seismic Attribute And Production To Determine The Potential Development Area In Middle Jurassic Block A,Mangyshlak Basin

High significance of integrated method by geology and engineering.Integrated models of the geology and flow characteristics of a reservoir are the main tool used to evaluate the potential of drilling new infill wells.Static of geological models are mainly based on borehole data combined with dynamic analyses of production dynamics.They are used to determine the redevelopment of and adjustments to new drilling locations;however,such models rarely incorporate seismic data.Consequently,it is difficult to control the changes in geological models between wells,which results in the configuration of well positions and predicted results being less than ideal.The purpose of the study is to build and establish the patterns of development of productive prospecting Jurassic objects based on the analysis of the structure,to determine the further strategy of capture of horizons based on the development of seismic attribute methodological "approaches" and ideas that provide a higher assessment of favorable zone of oil and gas potential and the probability of detection of secondary and remaining accumulation.There are four main difficulties in exploration and development study.First,the previous approach for the well adjustment position was inefficient,which,in turn,is not applicable for the current goals of exploration of remaining oil in certain horizons using a comprehensive project.Second,the existence of uncertainties and small capacity of coverage of the new survey are,in relationship with seismic model of an outdated methodology,in terms of re-development stage.Thirdly,the well placement in a productive formation is an important aspect of the effective field development.Fourthly,a previous drilling steps lead not effective production for the current life of the field.Here,the new studying process illustrates by(1)establishing favorable areas for static geological analysis;(2)conducting interwell analyses with seismic and sedimentary data;(3)studying well recompletion potential and the condition of nonproducing wells;(4)identifying potential sites constrained by seismic and geological studies,as well as initial oilfield production;(5)providing suggestions in a new well development plan.The comprehensive study with the application of seismic attributes and geological sedimentology environment showed the next results:Firstly,get new detailed model by reservoir geology,seismic and production data.The reservoirs are mainly of the delta type at the deposit.Reservoir deposition was as delta and branched-channel sandstone bodies,while the thickness of the sandstones varies sharply in the area,and lateral connectivity of the reservoir is complex.The marker horizon J-III of the deposit is a with four 4 branched deltas and the channel sandstone bodies spread in a wide strip along the perpendicular direction,with hydrocarbon distribution and productivity determined by facies.The new results obtained based on the applied seismic maps of the RMS attribute and inversion,which in turn allowed the location of reservoirs with remaining oil in the area of the edge part of sandstone bodies of the channel.Secondly,determine the new potential area for drilling and enhance production of wells.In the initial period of development,a heterogeneous sandy oil reservoir was characterized by a significant variation in the characteristics of operation associated with its variability both in area and in size.Enhancement in production tend in recent years,an increase in production growth has been carried out by putting new wells into operation,hydraulic fracturing,recompleted old wells to another horizon and restoring shut wells.The up-to-date technique of application seismic data and attribute RMS gives high detection of missed oil while decade accumulation,in additional reveals geological structure from different angel with newly updated model.This method is unique and never see feasibility before on current field.Results of integration of all described approaches improve understanding of complex reservoir with high efficiency in productivity.To ensure the efficiency of field development,a new method is applicable,which represents a transition from complex geology to engineering using seismic technologies.This is new practice and this method has potential application for effectiveness of production are in Block A,Mangyshlak Basin.