雁翎油田注氮气提高采收率现场试验

RESERVOIR ENGINEERING RESEARCH OF THE NITROGEN INJECTION PILOT IN YANLING OIL FIELD

翎油田注氮井组试验是一项与ＴＯＴＡＬ法国石油公司合作开展的针对碳酸盐岩底水油藏注水开发后期提高采收率的现场试验。在进行了大量油藏地质再研究及开采历史再认识的基础上编制了试验方案，１９９４年１０月开始正式注氮气试验。注气试验过程中，重点监测了油气、油水界面和注气井、观察井的井口压力变化，根据油气、油水界面的变化特点及试验进展要求，开展了界面运动规律、气驱效果和试生产方案等油藏工程方面的研究。通过注气及开井生产动态变化的研究，认识了注气和开井生产时各项动态指标的变化规律，积累了一定的经验，为继续开展注气、采油工作奠定了基础。

The nitrogen injection pilot in Yanling oil field is for EOR of carbonate reservoir with bottom aquifer in high water cut stage under the cooperation with TOTAL French Oil Company.The pilot plan was made up according to the further study of reservoir geology and production history,and was performed from Oct.1994.During gas injection,reservoir engineering research such as contact movement,gas drive efficiency and production plan were carried out on the basis of the various observed oil gas contact,oil water contact,wellhead pressure as well as formation pressure.The nitrogen injection pilot results was in better understan ding of the performance of injection and production,and will contribute to the future injection and production operations.A detailed and related discussion is provided in this paper.