Sedimentary Microfacies Study Of HAI21-4Block

The aim of this study " Sedimentary microfacies study of HAI21-4block " is torecognize the characteristics of geological structure and oil reservoir spreading anddevelopment of this block, understand the characteristics of oil and water distribution,reconstruct the sedimentary environment, providing support for the development of this blockin future.Through the cores observation, this study determined the sedimentary microfacies typesand the development law and characteristics of core in work area, provided a more realisticsequence of vertical development in order to determine the distribution of sedimentarymicro-phase. Use the results of the cores observation to determine the relationship standardsbetween the rock and electricity, to establish the conversion model between rock andelectricity. Explain sedimentary microfacies artificially for each layer or sand formation ofeach well,Establish vertical sedimentary microfacies model of each single well. This study, itstheoretical guide is sedimentology, development geology and well log geology, recognizedthe reservoir distribution and development through comprehensively applying cf the geology、coring、logging、production dynamic and etc. And reached the following conclusions:1. Use stability mud strata as a sign of contrast, adopting the deposition cyclesdescending levels, grading the guiding ideology of contrast control. Make single layerdividing of Fuyu oillayer in work area, divide Fuyu oil layer into12single layer under thecontrol of sedimentary cycle and maker bed2. The study shows that Fuyu reservoirs sediment is mainly affected by the north sourcecontrol in this area, underwater distributary channel and the estuary bar extends from north tosouth.