CAJ | 학술논문

　　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。
　　탄산염암봉동형유장저집공간류형주요위대형용동、용식공동급렬봉，척도대소현수，형태불규칙，분포불련속。정량각화공、동、봉재삼유공간적전포일직시해류유장개발적기술난제，목전상결핍유효적지질건모방법。이탑하탄산염암봉동형유장위원형，제출료다원약속탄산염암봉동형유장삼유지질건모방법，즉재고암용발육모식공제하，채용량보법건모。제일보，건립4개단일류형저집체모형：수선이용지진식별적대형용동화대척도렬봉，통과학정성건모방법，건립리산대형용동모형화리산대척도렬봉모형；연후재암용상공약속하，기우용동발육개솔체화정간렬봉발육개솔체，채용수궤건모다속성협동모의방법，건립용식공동모형화소척도리산렬봉모형。제이보，채용동위조건부치산법，장4개단일류형모형융합성다척도리산봉동저집체삼유지질모형。해모형정량각화료봉동저집체재삼유공간적전포특정，위유전개발전정료견실적지질기출。
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 .