摘要
鄂尔多斯盆地中部某地区延长组长6油层组,属于典型的陆相成因低孔低渗砂岩储层,在开发早期油藏描述阶段,动静态资料缺乏,要对油藏进行全面的研究和评价具有较大的难度。随机建模技术能够描述由于资料的缺乏而引起的地质模型的不确定性,因此,对于处于开发初期阶段的油田早期油藏描述,具有较好的针对性和适应性。这里简要介绍了随机建模的基本原理,建立了鄂尔多斯盆地中部某地区延长组长6油层组的构造模型,利用序贯指示模拟方法和序贯高斯模拟方法,建立了目的层的沉积微相和物性参数三维展布模型。经生产实践表明,用随机建模方法建立的地质模型,与实际生产动态符合率高,这表明随机建模技术在我国陆相复杂储层早期油藏描述阶段中,具有很大的适用性和实用性。
Chang 6 layer of Yanchang formation of ORDOS basin is typical fluvial reservoir with low porosity and super low permeability.During the early stage of oil reservoir description,it is difficult to study and evaluate the oil reservoir thoroughly because both of the static and dynamic information is scarce.The technology of reservoir stochastic modeling can describe the geological model's indeterminacy because of lack of information feasible.In the paper,the basic methods of stochastic modeling is introduced and skeleton model of Chang 6 zone of Yanchang formation of ORDOS basin is established.The sedimentary micro-facies model of the target formation and 3-D geological model of reservoir parameters,i.e.permeability and porosity,are also achieved using the algorithms of SIS(Sequential Indicator Simulation)and SGS(Sequential Gaussian Simulation),separately.The practical production results indicate that the prediction of advantage sand on the base of geological model of reservoir accords with the practical production highly.The technology of stochastic modeling is applicable and banausic in the early stage of oil reservoir description in completed fluvial facies reservoir in China.
出处
《物探化探计算技术》
CAS
CSCD
2008年第5期403-407,350,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金项目(40672086)
关键词
随机建模
油藏描述
延长组
低渗透储层
stochastic modeling
oil reservoir description
Yanchang formation
low-permeability reservoir
