准噶尔盆地西北缘稠油油藏蒸汽吞吐后期提高开发效果的方法  

Study on the Improved Development Effect and Methods at Late Stages of Steam Stimulation in Heavy Oil Reservoirs in the Northwest Margin of Junggar Basin, Xinjiang

作　　者：钱鑫[1] 黄文华[1] 喻克全[1] 吴俊英[1] 

机构地区：[1]新疆油田分公司勘探开发研究院开发所,克拉玛依834000

出　　处：《新疆石油学院学报》2002年第4期57-62,共6页Journal of Xinjiang Petroleum Institute

摘　　要：准噶尔盆地西北缘浅层稠油油藏自1984年进行蒸汽吞吐试验以来,已陆续动用了六区、九区、红浅区等三个油田18个层块,截止1996年底共动用含油面积41.9Km2,地质储量9086×104t。通过近十年的开采,大部分区块已到了吞吐末期,吞吐阶段累积产油1308×104t,油汽比0.33,采出程度约20%左右,动用程度很低。本文就是利用油藏工程及数模方法,提出了在吞吐后期转换开采方式、加密调整、优化调整注采参数、改善采油工艺技术、层位上返、注添加剂等提高蒸汽吞吐后期开发效果的方法,通过这些方法,使稠油老区产量持续在稳定水平。Since the steam stimulation test was carried out in 1984 in the shallow heavy oil reservoirs in the northwest margin of Junggar Basin, heavy oil has been produced in 18 horizons in three oilfields such as District No.6, District No.9 and Hongqian District successively, and by the end of 1996 a total oil-bearing area of 41.9 km2 was put into production, with the OOIP of 9086×104t. After nearly ten years of development, most parts of the area have come to the end of steam stimulation. The cumulative oil production at the steam stimulation stage is 1308×104t, with the oil-steam ratio of 0.33, a ratio of total oil produced to OOIP is around 20%, with a low degree of production. This paper suggests that, by using reservoir engineering and numerical simulation methods, the recovery methods should be changed at the later stages of steam stimulation, infilling well pattern adjustment, optimizing and adjusting the injection-recovery parameters, improving the oil production technologies, and such methods as using inverted recovery (from the bottom to the top layers), injecting additives etc. By using this methods, the oil production is maintained at a stable level in the aging heavy oil areas.

关 键 词：准噶尔盆地西北缘 稠油油藏 蒸汽吞吐后期 开发效果 方法 

分 类 号：TE345[石油与天然气工程—油气田开发工程] TE357.