| The flow unit research belongs to the oil deposit geology research theory and the attribute method which emerge in mid and late of 1980s .The reservoir flowing unit belongs to the category of reservoir construction structure, is a reservoir non-isotropic. Aimed at water ratio of Yuan 72 of Hu Jianshan oil field area rise quickly, the wells have bottom water have high water ratio, launched flowing unit distribution and the flowing unit and the remaining oil relations research, deepened the understanding of this oil deposit geological.This article first analysis the structure, deposition, storage layer and geological features of Yuan 72 district's Yan9 reservoir of Hu Jianshan oilfield.Basing on the analyses result , using well log, well test result to research the regularity of distribution of reservoir fluid. Base on the research result, used more subject theory and method, comprehensive geological, and well log, oil test and production dynamic information, combine the static and dynamic information, determine the barrier of permeative fluid , extraction the parameter of flow unit, divided the flow unit of the wells have core information, established the storage layer flow unit model of research area braided river phase ; with the distribution of flow unit and property of reservoir , revealed the internal relationship of flow unit and remaining oil distribution .The result has been used in the develop of reservoir.Research shows that: Hu Jianshan oilfield yuan 72 area structure and regional tectonic background consistently, is low and the northeast of reservoir with braided fluvial facies primarily, mainly develop braided channel distributary channel, natural levees, plain; such microfacies between bay By oil reservoir distribution of the reservoir characteristics and micro structure control, mainly distributed in bottom water reservoir delayed 9-2 section, oil-water layer mainly distributed in middle and northeast delay 9-3 pieces; Using the porosity, permeability, flow layer, three parameters with index clustering analysis, a flow unit discriminant indices, can effectively identify research area, and the research flow unit of divided into three flow unit is reasonable; Through mobile unit distribution studies show, sedimentary facies distribution on the flow unit control obvious,Ⅰ,Ⅱclass flow unit in the river and river main development development area,Ⅲoffsets stack of flow in river main development unit, channel of edge between bay parts; According to different characteristics of flow unit, combine to produce dynamic, think of the dynamic unit of reservoir liquid producing ability of absorbing water and play a direct control effect; Using mobile units and relationship of remaining oil distribution, know meta 72 area delay 9 section of remaining oil distribution atⅠreservoir, because such flow unit of bottom water coning quickly, make water Wells, noting that the generally high current yield is reduced, and the oil crosswell residual oil, still have many distribution In the combination of three kinds of flow unit by sand body parts, pointed out and well nets imperfect, the influence of remaining oil in a strip or plane often block distribution, distribution bigger; According to the research results, flow unit of the proposedⅡkind, unusedⅢflow unit of reservoir pore assignments, and for JingZu internal flow unit by effect of different water injection well bad refracturing, these measures in the production practice has achieved good application effect.Through the above researches, the thought and method of the braided fluvial region fluvial reservoir flow unit research in the study area have been formed, the deepening understanding of reservoir heterogeneity are achieved, and scientific basis foe stable production has been provided. |
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