Fine Reservoir Description Of Guantao-formation In Shan 10-X122 Block In Shanjiasi Oilfield

Shan 10-X122 block is located at the southern of Shanjiasi Oilfield,lies in the joint of the two pieces Shan 2 block and Shan 10 block,since 1984,when the Shan 2 block and Shan 10 block have been put into development,overall good development effect were obtained.However,because of the low degree of geological understanding,the Shan 10-X122 block has been unable to develop and deploy effectively because of the difficult development of heavy oil.Based on the Shan 10-X122 block guantao as the research object,according to the principle of isochronous contrast stratigraphic classification,the stratigraphic sequence comparison and further fine low level sequence segmentation,combined with block seismic data,logging data,and the adjacent Shan 2 blocks and Shan 10 geological characteristics of continuity and inheritance and so on to determine the structural characteristics of the research block,fracture characteristics,etc.Through the study of Shan 10 drilling coring data determine the blocks in the study of lithologic features and structure of the particle size,etc.,according to a single piece of lithology,palaeontology,electrical characteristics,combining with the analysis of single well facies,sand body thickness,sand body morphology,such as research,analysis of the sedimentary facies,sub facies and microfacies,at the same time,according to the regional sedimentary background,sedimentary facies marks the establishment of a Shan 10-X122 block sedimentary model.Upon completion of block structure and sedimentary pattern research,based on the use of single well logging data and seismic data to carry out the plane distribution of the reservoir characteristics research,especially the objective layer guantao reservoir plane and layer,interlayer heterogeneity and so on,according to the standard of effective thickness,oil-water interface and production performance data,determine the thickness of each small layer of guantao effective distribution.Based on the log data and the test data,the contour map of the effective thickness and the main layer is prepared,and the other characteristics of the reservoir are also studied.Try and figure out the single well oil exploration development regularity and characteristics of the volume method is adopted to carry out the calculation of reserves,according to the specification requirements and reserves evaluation indicators,to Shan 10-X122 block for comprehensive evaluation of reserves of heavy oil reservoir.The practice of the mine shows that the new well drilling and the single well capacity have reached the design index,which has obtained the better development effect and fully verified the result of this oil reservoir description.