CAJ | 학술논문

松辽盆地双坨子气田下白垩统泉头组第一段为主力产气层段,发育曲流河和辫状河沉积体系.利用岩石相与测井相转换技术对其沉积微相进行了划分与对比,进一步识别出边滩、心滩、决口扇、河道滞留、天然堤和泛滥平原等沉积微相,并对其沉积微相平面展布特征进行了研究,为砂体空间分布预测和三维储层属性建模提供了重要依据.砂体展布受控于沉积微相,结合物性资料统计分析,认为边滩砂体是研究区曲流河沉积中最有利的储集相带,心滩砂体是辫状河沉积中最有利的储集相带.
송료분지쌍타자기전하백성통천두조제일단위주력산기층단,발육곡류하화변상하침적체계.이용암석상여측정상전환기술대기침적미상진행료화분여대비,진일보식별출변탄、심탄、결구선、하도체류、천연제화범람평원등침적미상,병대기침적미상평면전포특정진행료연구,위사체공간분포예측화삼유저층속성건모제공료중요의거.사체전포수공우침적미상,결합물성자료통계분석,인위변탄사체시연구구곡류하침적중최유리적저집상대,심탄사체시변상하침적중최유리적저집상대.
Member 1 of the Lower Cretaceous Quantou Formation is the principal section of the Shuangtuozi gas field located in the Songliao Basin. There develops the meandering river deposition system and braided river deposition system. By using the petrofacies and electrofacies switching technology, the authors divide and compare the sedimentary microfacies of Member 1 of Quantou Formation in the study area, and therefore further recognize the sedimentary microfacies, such as marginal bank, point bat, crevasse splay, channel lag, natural levee, bet lands, etc.. Also, they study the planar distribution characteristics of the sedimentary microfacies so as to provide significant evidences for forecasting sandbody space distribution and 3-D reservoiring modeling. According to statistic analysis of physical property materials, and under the control of sedimentary microfacies, the marginal bank sandbody is the most benificial reservoir belt in the meandering river deposition system of the study area, and the batture sandbody is that in the braided river depositional system of the study area.