Fine Reservoir Description Of Y45 Block In M Oilfield Research On Development Countermeasures

The M oilfield is located in the northwestern margin of the Moliqing fault depression.The reservoir is characterized by rapid lithological physical properties,complicated oil and water distribution,various types of reservoirs,and various factors such as delayed water injection.Many problems are exposed in the development,and the corresponding relationship between injection and production is poor.The sand body has low connectivity and the water injection has no obvious effect,which seriously affects the final oil recovery.In light of these developments,a detailed description and evaluation of the reservoir will be carried out to provide theoretical research for the next step in the development and adjustment program.In this study,the fine oil reservoir description was performed on the lower plate oil reservoir of block y45,and based on the research results,adjustment measures were put forward for the problems existing in the oil field development.In view of the geological characteristics,development status and existing problems of the lower plate oil reservoir in block y45,the reservoir in the study area was analyzed in detail.The logging sequence interface was established to search for the development regular pattern of the layer.The comparison of small layers was conducted using the principle of similar morphology and similar thickness.The original data was further corrected and subdivided through the marker layer and standard wells.The destination layer is subdivided into 20 small layers of 4 sand groups,basically understanding the formation relationship of the y45 footwall;the characteristics of the sedimentary phase are described in detail through well logging phase,single well phase,and plane phase analysis,and the sedimentary evolution pattern is clearly defined.Sedimentary micro phase type;a detailed analysis of the basic physical properties of the reservoir,and a clearer understanding of the compartmentalization,identification,and planar distribution characteristics of the reservoir,delineation of the oil-bearing area,and drawing of an effective thickness plan.The reserves of the study area,starting from the analysis of sedimentary phase structure and micro phase type characteristics,studied the distribution characteristics of the reserves in different micro phase structures;based on the study of stratum and faults,a three-dimensional structural model was established and the reservoir was randomly built The method of the mold establishes the property model of porosity,permeability,oil saturation and net hair ratio,and the image is visually realized in the y45 area.The image directly realized the simulation of the spatial distribution of the reservoir in the lower plate of block y45,which is consistent with the previous research results of geological foundations,and provides a reliable geological basis for the next deployment of development plans.The reservoir engineering analysis shows that the physical properties of the reservoir in the y45 block are poor,the heterogeneity within the layer is strong,the productivity of a single well is low,etc.The reservoir is in the middle development stage,the resources of each development unit have not been fully utilized.There is a lot of space for increasing the degree of recovery and ultimate recovery ratio.The reservoir development potential in the study area has been analyzed and development adjustment measures have been proposed to enhance development.