Reservoir spaces of fractured-vuggy carbonates mainly , include large caverns , dissolved pores and fractures , which are varied in scale , irregular in shapes and discontinuous in distribution .There still have no effective geological modeling method for quantitative descriptions of 3 D reservoir space distributions in fractured-vuggy carbonate reservoirs . In this paper,taking Tahe fractured-vuggy carbonate reservoir as an example ,we put forward a 3D geological modeling method of fractured-vuggy reservoir under the constraint of multiple geological factors ,i.e.two-step modeling under the control of ancient karst development pattern .In the first step ,4 single-type reservoir models were established .After large cavens and large-scale fractures were identified by using seismic data ,a discrete large cavern model and a discrete large-scale fracture model were established first with deterministic modeling method .Then,under the constraint of karst facies and based on development probability volumes of dissolved pores and interwell fractures , a dissolved pore model and a discrete small-scale fracture model were established by using the stochastic multi-attribute coordinated modeling method . In the second step ,the 4 single-type reservoir models were merged into a 3 D multiscale discrete geological model of frac-tured-vuggy carbonate reservoirs by using the diadochic assignment algorithm .The final model can quantitatively describe the 3D distribution of the fractured-vuggy carbonate reservoirs ,and provide geological foundation for oilfield development .% 碳酸盐岩缝洞型油藏储集空间类型主要为大型溶洞、溶蚀孔洞及裂缝，尺度大小悬殊，形态不规则，分布不连续。定量刻画孔、洞、缝在三维空间的展布一直是该类油藏开发的技术难题，目前尚缺乏有效的地质建模方法。以塔河碳酸盐岩缝洞型油藏为原型，提出了多元约束碳酸盐岩缝洞型油藏三维地质建模方法，即在古岩溶发育模式控制下，采用两步法建模。第一步，建立4个单一类型储集体模型：首先利用地震识别的大型溶洞和大尺度裂缝，通过确定性建模方法，建立离散大型溶洞模型和离散大尺度裂缝模型；然后在岩溶相控约束下，基于溶洞发育概率体和井间裂缝发育概率体，采用随机建模多属性协同模拟方法，建立溶蚀孔洞模型和小尺度离散裂缝模型。第二步，采用同位条件赋值算法，将4个单一类型模型融合成多尺度离散缝洞储集体三维地质模型。该模型定量刻画了缝洞储集体在三维空间的展布特征，为油田开发奠定了坚实的地质基础。
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