论古岩溶洞穴型储层三维地质建模——以塔河油田四区奥陶系储层为例  

Discussion on 3D Geological Modeling of Palaeokarst Cave Reservoir: a Case Study on Ordovician Reservoir of the 4th Block in the Tahe Oilfield

作　　者：马晓强[1,2] 侯加根[1,2] 胡向阳[3] 刘钰铭[1,2] 邹婧芸[1,2] 赵彬[4] 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]中国石化石油勘探开发研究院,北京100191 [4]长江大学地球物理与石油资源学院,湖北荆州434023

出　　处：《地质论评》2013年第2期315-324,共10页Geological Review

基　　金：国家重点基础研究发展计划(973)课题"碳酸盐岩缝洞型油藏地质模型研究"(编号2011CB201003);国家科技重大专项课题"缝洞型碳酸盐岩油藏三维地质建模技术"(编号2011ZX05014-002);中国石油大学(北京)科研基金(编号KYJJ2012-01-19)的成果

摘　　要：古岩溶洞穴型储层是一种后期改造形成的特殊碳酸盐岩储层,储层发育复杂,非均质性很强。开展洞穴型储层建模研究对该类储层的三维定量表征以及数值模拟、储量计算等后续工作有重要意义。在古岩溶洞穴型储层成因特征分析的基础上,针对储层建模的几个关键环节开展了讨论,包括建模策略、模拟随机性控制方法以及数学方法等方面。并以塔河油田四区奥陶系储层为例进行了实践应用,在地貌分区、岩溶分带的地质框架下,以井孔数据为基础,优选能够反映洞穴发育概率的波阻抗反演信息及相干信息作为模拟的井间约束条件,选取具有趋势的同位协同序贯指示模拟方法整合多类信息建立了洞穴型储层三维地质模型,并提出了研究区分块设置局部变差函数的思路,取得了较好的效果。Palaeokarst cave reservoir is a kind of special carbonate reservoir which is remoulded, and development of this reservoir is complex, having strong heterogeneity. It＇ s significant for the 3D quantitative characterization, numerical simulation, reserve calculation etc. to carry out the modeling of palaeokarst cave reservoir. Through the analysis of objective reality of Ordovician palaeokarst cave reservoir in the Tahe oilfield, several key steps in reservoir modeling, such as modeling strategy, simulation randomness control and mathematical algorithm etc. were discussed. And taking the Ordovician reservoir of the 4th block in the Tahe oil_field as an example, under the geological framework of vertical karst zoning and planar paleogeomorphic division, based upon the borehole data, optimizing wave impedance and coherence attribute which can reflect development probability of caves as cross well constraints, the 3D geological model of palaeokarst cave reservoir is built by using the method of collaborative sequential indicator simulation with a trend to integrate multi-information, and thought of local variogram setting is proposed and achieves good results.

关 键 词：古岩溶 洞穴 储层建模 塔河油田 波阻抗 序贯指示模拟 

分 类 号：P618.13[天文地球—矿床学]