Abstract:

Taking LH Oilfield as an example, a method of integrated geological modeling, using seismic, log and geological data, was applied to the characterization of Neocene reef reservoir.The reservoir of LH Oilfield belongs to Neocene Zhujiang Formation, a typical Neocene fringing reef on the carbonate platform margin.In order to predict the complicated inner stratum frame, a workflow was put foreward.Based on incorporated analysis of 3D seismic data, cores and logs, the depositional and diagenetic process was figured out, and thus the inner frame of reef was worked out.Under the constraint of geological frame, logs and seismic attribution, a geological reservoir model was built up with stochastic modeling method.The prediction of reservoir characteristics in reef flat area,based on the study and geological model, has been proved by a new well.

Key words: Neocene, reef reservoir, platform margin, depositional and diagenetic process, integrated geological modeling, reservoir characterization