Accurate Strata Correlation With Wells And Seismic Data

As the exploration and(evelopment of the oil and gas,Kekeya condensate gas field has entered the production tail with a high proportion of water,and the production of each reservoir in Z formation began to decline consequently in varying degrees.Kekeya condensate gas field should not only face the emerging new geological problems,but also have to deal with the following basic date problems:1 Basic data such as reports of drilling,logging,well testing,measures,production and Research is insufficient or scattered in various places.2 Due to the complexity of surface geological conditions,characterization on the fracture by the old seismic data which have low signal to noise ratio is not accurate,therefore the old seismic data is unable to meet the requirements of fine structure description.3 Across four generation of logging suites,Electric logging curves got during last 35 years are lack of uniform logging processing and interpretation.Problems of basic data of Kekeya condensate gas field definitely caused the stagnant of miscellaneous geologic investigations,which lead to the prominent contradiction between the geological study and urgent production tasks.Searching for undiscovered lithologic hydrocarbon reservoir and remaining oil is the significant way to steady the oil and gas production at the production tail.Either way shall be established at subzone structural map but the old seismic data can neither meet the demand of horizontal or vertical resolution for structural diagram.In tackling these problems,it is the main purpose of this paper that through the complete database of seismic,geological,drilling core,logging and performance data compiled this time in the Kekeya research area to carry out new 3D seismic fine structural interpretation based on the main target layer and then to establish subzone structural map based on both the accurate subzone correlation and the constraint seismic surface.