CAJ | 학술논문

永安油田地质条件复杂,断层发育,断块破碎,油藏类型受断层影响较大,主要为断层遮挡的层状构造油气藏,目前处于中高含水开发后期,为了改善油田开发效果,开展了沉积相及砂体分布规律研究,进行了储层特征分析与有利地区的预测。通过岩心观察、测井相以及砂体平面和剖面上形态分析,建立了各区、各段和各砂组沉积相图版和单井微相模式。应用纵、横向连井剖面相序列分析,进一步认识了沉积演化、砂层展布和储层物性变化规律。
영안유전지질조건복잡,단층발육,단괴파쇄,유장류형수단층영향교대,주요위단층차당적층상구조유기장,목전처우중고함수개발후기,위료개선유전개발효과,개전료침적상급사체분포규률연구,진행료저층특정분석여유리지구적예측。통과암심관찰、측정상이급사체평면화부면상형태분석,건립료각구、각단화각사조침적상도판화단정미상모식。응용종、횡향련정부면상서렬분석,진일보인식료침적연화、사층전포화저층물성변화규률。
The geological conditions of Yong＇an Oilfield is very complex,fault development,and fault block broken.Reservoir type in Yong＇an district is affected mainly by faults.And the main reservoir type is focused on layered structural reservoir,which is screened by fault.At present,Yong＇an Oilfield has entered the developing later stage of high water-cut.Sedimentary facies and sandbody distribution rules,especially analysis of reservior characteristics,and prediction of favorable region have been studied to improve development effects.Sedimentary facies charts and single well microfacies patterns for each area,each member,and each sand series were established by mass core observation,electrofacies,and morphological analysis in sand-body plane and section.Facies sequence analysis of longitudinal and horizontal well section was applied to recognize sedimentary evolution,sandbody distribution and changing law of reservoir physical properties.