CAJ | 학술논문

大庆油田现已进入高含水开发阶段，寻找和开发剩余油非常重要。大庆油田3个密集井网区的实验结果表明，沉积微相是影响剩余油平面分布的主要因素，大型河道砂中的剩余油主要分布于砂体物性变差的部位，分流河道及水下分流河道砂中的剩余油主要存在于薄砂层或孤立的小透镜体中；沉积韵律层渗透性的差异控制剩余油的纵向分布，厚油层顶部是剩余油富集的有利区段。另外，开发因素对剩余油的分布亦有一定的影响。不同成因的砂体中，剩余油分布不同。分流河道砂体、分流间砂体及水下分流砂体因非均质性严重，故易形成剩余油。
대경유전현이진입고함수개발계단，심조화개발잉여유비상중요。대경유전3개밀집정망구적실험결과표명，침적미상시영향잉여유평면분포적주요인소，대형하도사중적잉여유주요분포우사체물성변차적부위，분류하도급수하분류하도사중적잉여유주요존재우박사층혹고립적소투경체중；침적운률층삼투성적차이공제잉여유적종향분포，후유층정부시잉여유부집적유리구단。령외，개발인소대잉여유적분포역유일정적영향。불동성인적사체중，잉여유분포불동。분류하도사체、분류간사체급수하분류사체인비균질성엄중，고역형성잉여유。
The test results of three dense well net regions in DaqingOilfields indicate that sedimentary microfacies is the main factor influencing the planar distribution of residual oil.In large channel sand bodies,the residual oil is mainly distributed in the places with poor physical property;in distributary channel sand bodies,the oil is usually preserved in thin sand laminaes and sand lens.The top part of thick oil horizon favours the enrichment of residual oil,and exploration factor also has some influence on the distribution of risidial oil.