Research On Reservoir Flow Unit And Application

A comprehensive research is carried out on Reservoir Flow Units and Its Application, including division of Reservoir Flow Units, relations between Reservoir Flow Units to production responses, 3D reservoir modeling, reservoir simulation and engineering project. A case is from Zaonan Oil Field adapted.The structure of isochronal stratum is builded by the high- frequency sequence stratigraphy and hiberarchy analysis methods including parasequence layer, sand body and genie sand body. Reservoir property parameters are computed from log data according to layer, and body, genie sand body.The deposite facies are divided in tow scales of layer and sand body, the conception of proportional microfacies is put forward, that the proportion of a certain face can be used to descript face of interval which includes several sands, which can avoid averaging phenomena. Types and characteristics of reservoir diagenesis is anaylized. The complex system of diagenesis is quantified on base of rock slices, and the contribution ration of all kinds of diagenesis to reservoir properties is studied.In virtue of section and slice up, Reservoir structure model is built ,and the formation mechanism of reservoir structure is probed. The genie sand can be considered as a connectivity sand body, it's also a unit in engineer project, the research has important meaning to oil production, specially in those oil fields in stage of high water bearing.In the paper, flowing character of simple point of reservoir is depicted by method of flow coefficient and FZI. Flow unit of physical communicated object is depicted by method of fuzzy clustering to.Connectivity body is classified into four Flow unit according to FZI. by uzzy cluster, the scheme is confirmed for division of Flow units. Three sections from three methods show the same characteristics, that result from the same properties of flow units. The flow units in Connectivity body can meet the production of oil field.Base on flow unit division of genic sand, the relationship between flow unit and the responds of water inject test and fluid production test, effective thickness, calculation of reserves, residual recoverable reserves, and forecast of oil remaining, and so on. In a word, these research is important meaning for extending application of flow unit and improvement of recovery ratio.New engineering strategy of oil production is brought out based on reservoir flow unit, and the efficiency is gained in Z43 block.