CAJ | 학술논문

　　哈萨克斯坦滨里海盆地地处东欧地台东南部边缘，为克拉通边缘前陆盆地，是里海地区的主要含油气区之一。滨里海盆地东南部三叠系－侏罗系广泛发育陆源碎屑岩地层。储集层岩性主要为浅海陆棚、海滩砂坝及三角洲沉积相的砂岩和粉砂岩，储层物性特征总体表现为中孔－中渗型。测井结果显示储层物性和孔隙结构变化较大，储层非均质性强。采用基于模糊数学的评价方法，通过多元回归分析、最小二乘法优化地质要素，确定孔隙度、渗透率、含油饱和度、砂岩厚度作为关键地质因素，建立了模糊数学关系模型，克服了常规的储层含油气性评价过程中诸多不确定因素带来的复杂化和主观性问题。通过多个模型比较，作出判断，确定了J2Ⅱ和TⅡ储层为本区优势储层，为该区进一步油气开发提供参考依据。
　　합살극사탄빈리해분지지처동구지태동남부변연，위극랍통변연전륙분지，시리해지구적주요함유기구지일。빈리해분지동남부삼첩계－주라계엄범발육륙원쇄설암지층。저집층암성주요위천해륙붕、해탄사패급삼각주침적상적사암화분사암，저층물성특정총체표현위중공－중삼형。측정결과현시저층물성화공극결구변화교대，저층비균질성강。채용기우모호수학적평개방법，통과다원회귀분석、최소이승법우화지질요소，학정공극도、삼투솔、함유포화도、사암후도작위관건지질인소，건립료모호수학관계모형，극복료상규적저층함유기성평개과정중제다불학정인소대래적복잡화화주관성문제。통과다개모형비교，작출판단，학정료J2Ⅱ화TⅡ저층위본구우세저층，위해구진일보유기개발제공삼고의거。
Kazakhstan Pre-Caspian Basin is a craton marginal foreland basin located in the southeast edge of East European Platform and is one of the main petroliferous regions in Caspian Sea .Terrigenous clastic rocks were widely developed dur-ing the Triassic-Jurassic in southeastern Pre-Caspian Basin .The reservoirs are dominated by sandstone and siltstone of shallow marine shelf facies , shoals facies and delta facies .The poroperm characteristics of the reservoirs are medium porosity and moderate permeability as a whole .The well logging interpretation shows that the reservoirs physical properties and pore texture are of strong heterogeneity .Based on fuzzy mathematics evaluation ,this paper optimized the geological factors through multiple regression analysis and smallest secondary multiplication , recognized porosity , permeability , oil saturation and sand thickness as the key geological factors , and established fuzzy mathematical model .The new model overcomes the complexity and subjectivity caused by various uncertainties that are common in traditional reservoir evaluation . Multiple model comparison reveals that the favorable reservoirs in this area are J 2Ⅱand TⅡ.