期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：153
期号：3
页码：032043
DOI：10.1088/1755-1315/153/3/032043
语种：English
出版社：IOP Publishing
摘要：Lu 36 block in Huabei oilfield uses vertical well to inject and horizontal well to produce. The reservoir heterogeneity of this block is strong and watercut is rising fast. The drilling in reservoirs of horizontal well pattern is long, so it is difficult to find water and shut off water, increasing the difficulty to adjust and develop. To explore an effective way to develop the remaining oil of the horizontal well reservoir in later stage of production. Through analyzing, the movable gel flooding can effectively improve interlayer contradictions, expand swept volume in the plane and innerlayer in Lu 36 block. The gel adaptable in horizontal well pattern is large doses, moderate strength and strong stability. Injecting on the single well can lead to the channeling or streaming. Through detailed reservoir description, the reserves are recalculated. The displacement system and parameters are further optimized. 4 wells in Lu 36 block has carried out the overall displacement. 51,264 m3 of flooding agent were injected and the effective rate of corresponding oil wells is 100%. The oil production increased from 5.3 tons to 18.1 tons per day, water cut decreased from 95.43% to 83.18%. The peak of the growing oil is 12.8 tons per day and the valid is 36 months. The cumulative increased oil is 7,965 tons.
