CAJ | 학술논문

分析了鄂尔多斯盆地子北地区延长组长6段油层构造特征、沉积相分布及砂体展布特征，从烃源岩、储层、盖层等方面对长6段油藏成藏条件进行了探讨，并就油藏类型、主控因素及成藏期次进行了讨论。结果表明：子北地区长6段油藏具有较好的生、储、盖配置关系，主要受沉积微相及储层物性控制；长6段油气主要储存在长61、62、63段河道砂体内，油藏类型主要为岩性圈闭；长6段油藏主控因素有主分流河道、储层物性及其非均质性、原油分布；长6段油层中，油气包裹体均一温度分布呈双峰状，主要在100℃~110℃和130℃~140℃；利用热演化史与流体包裹体均一温度法对油气成藏期次进行判断，长7段烃源岩生成的油气在早白垩世运移并大量聚集至长6段油层组，形成长6段油藏。
분석료악이다사분지자북지구연장조장6단유층구조특정、침적상분포급사체전포특정，종경원암、저층、개층등방면대장6단유장성장조건진행료탐토，병취유장류형、주공인소급성장기차진행료토론。결과표명：자북지구장6단유장구유교호적생、저、개배치관계，주요수침적미상급저층물성공제；장6단유기주요저존재장61、62、63단하도사체내，유장류형주요위암성권폐；장6단유장주공인소유주분류하도、저층물성급기비균질성、원유분포；장6단유층중，유기포과체균일온도분포정쌍봉상，주요재100℃~110℃화130℃~140℃；이용열연화사여류체포과체균일온도법대유기성장기차진행판단，장7단경원암생성적유기재조백성세운이병대량취집지장6단유층조，형성장6단유장。
Tectonic characteristics,distribution of sedimentary facies and sandstone distribution of Chang-6 member in Yanchang Formation of Zibei area,Odors Basin were analyzed.Hydrocarbon accumulation conditions of Chang-6 reservoir were investigated in terms of hydrocarbon source rock,reservoir,caprock,etc.Reservoir type,main controlling factor and accumulation period were discussed. The results show that Chang-6 member has a good assemblage of source-reservoir-caprock in Zibei area, and is controlled by sedimentary microfacies and reservoir physical property;petroleum in Chang-6 member is reserved in channel sandbody of Chang-61 , Chang-62 ,Chang-63 members,and reservoir type is lithologic trap;the main controlling factors of reservoir in Chang-6 member include main distributary channel,reservoir physical property and its anisotropy,distribution of petroleum;distribution of homogenization temperature of petroleum inclusion in Chang-6 member is bimodal shape with the values of 100 ℃-110 ℃ and 130 ℃-140℃;hydrocarbon accumulation period is obtained by the combination of thermal evolution history and homogenization temperatures of fluid inclusion,and petroleum generated by hydrocarbon source rock of Chang-7 member migrates in Early Cretaceous,and accumulates in oil layer group of Chang-6 member,and then Chang-6 member reservoir forms.