摘要
保持合理的压力水平,是获得较高原油采收率的基础,同时也是提高注水利用率、控制油水井套损的关键。喇嘛甸油田水驱注采关系复杂,开发层系交叉,近年来,地层压力总体保持在合理范围内,但局部压力不均衡。因此,通过研究喇嘛甸油田特高含水期水驱地层压力、流压、注采比之间的关系,并制定调整的技术界限指导压力系统调整。通过2012年压力系统优化调整,水驱及各套层系压力控制在合理范围以内,在合理地层压力范围内的采油井比例提高到了45%以上,并有效控制套损发生,全厂发现套损井25口,百口作业井套损率仅为0.91%。
Keeping appropriate pressure is the base of enhancing oil recovery,and it is also very important to improve the utilization efficiency of water injection and control casing damage of the oil or water wells.The injection-production relationship in Lamadian Oilfield is complex,and some layer series of development are crossed.In recent years,reservoir pressure has been kept in a reasonable range as a whole,but there exists regional imbalance.So in order to direct pressure system regulations,the relationship of waterflooding reservoir pressure,flowing pressure and injection-production ratio and set technical limitation of the regulations are studied.After pressure system optimization and regulation in 2012,flooding pressure and every set of layer series are kept in a reasonable range and the ratio of the production wells raises to more than 45%.Casing damage is also controlled effectively.25 wells of casing damage are found in the whole production company,the casing damage rate is only 0.91%every 100 workover wells.
出处
《长江大学学报（自科版）（中旬）》
CAS
2013年第7期136-139,163,共4页
Journal of Yangtze University(Nature Science Edition)
关键词
喇嘛甸油田
水驱压力系统
地层压力
套损
注采比
Lamadian Oilfield
water flooding pressure system
reservoir pressure
casing damage
injection-production ratio
