Research On The Prediction Method Of Interwell Interlayer In Donghe Sandstone Of Hudson Oilfield

Interlayer exists commonly and distributes complexly in Donghe Sandstone of Hudson Oilfield.In order to meet the requirements of fine reservoir description and residual oil distribution,clear the position,types and distribution of interlayer,deepen the understanding of reservoir internal structure,for residual oil exploration and reservoir development adjustment providing the theory basis.Through core observation and vertical well and horizontal well logging data and dynamic production data,established the vertical well and horizontal well interlayers'qualitative interpretation chart and identification standards which can accurately determine the characteristics of interlayers' lithology,physical property,position and thickness.Using the dip logging to pick up the single well interlayers' occurrence,clear interlayers' trend and range in the interwell extension.Under the control of the stratigraphic sequence and sedimentation model,based on the framework of interlayer,integrated various logging series,horizontal well data and dynamic production data to predict.Combining the conventional logging data and dip logging data,identify the interface levels and types of the vertical well interlayer.Through the combination of vertical wells and horizontal wells and take the horizontal wells as "bridge",to predict the interlayers' distribution between two adjacent vertical wells.Combining the static and dynamic data and guiding by the static geological depositional model,summarize the dynamic response model of interlayer.Synthesize all of the above data to predict the interlayer distribution.