Abstract: China's maturing oilfields have come into the later development stage.Relations of the water oil underground are complicated and residual oil are dispersive,more difficulties have met in stable production and adjusting.About 70 percent of productions and reserves are the main production and potential from these oilfields.Most China's oilfield are nonmarine heterogeneous with complex geological structure and high oil viscosity,which determined the uneven of waterflooding and complication of residual oil distribution.This paper describes four correlating techniques for improving development effects and oil recovery based on the developing status of maturing oilfield:1.Reservoir description correlating technique,which comprising of dynamic monitoring,fine reservoir description and reservoir numerical simulation;2.Waterflooding correlating technique:structure adjusting for water injection,fluid production and water cut;drilling high effect adjusting wells;improving recovery of low effective units;3.Thermal recovery technique;4.Chemical flooding method.Much progress have been made in IOR techniques for China's maturing oilfields in recently years.According to potential distribution of different reservoirs.Many effective methods and correlating techniques may get better results in increments of reserve and production.The development level and efficiency will improve non marine heterogeneous oil fields only relying on these advanced,practical and economical techniques.

Key words: maturing oilfield, development, adjusting, IOR, correlating techniques

摘要： 中国陆上老油田已进入高含水后期开发,随着开采程度加深,地下油水关系越来越复杂,剩余油分散,给油田稳产和调整挖潜带来的难度越来越大.但目前老油田储量和产量的比例,仍占陆上总开发储量和产量的70%以上,是生产上的主力,其潜力也最大,仍然是今后调整挖潜的主要对象.鉴于中国陆上油田绝大多数为陆相储层,构造复杂,非均质严重,原油粘度偏高,石油地质特点决定了水驱油的不均匀性及剩余油分布的复杂性,潜力就存在于这种复杂之中.根据中国陆上石油地质特点和老油田开发现状,围绕改善开发效果及提高采收率着重阐述了四个方面的配套技术:即认识油藏的配套技术,主要包括油藏动态监测技术、油藏精细描述技术、油藏数值模拟技术;完善注水开发配套技术,主要包括注水结构调整、产液结构及含水结构调整、钻取高效调整井、改造“双低”单元、配套工艺技术等;热力采油配套技术;化学驱采油配套技术.经过多年来的努力,我国陆上油田提高采收率技术有了明显进步,针对不同类型油藏潜力分布特点,采用各种有效方法及其配套技术,为挖潜增储、增产提供了很大的余地.

关键词: 老油田, 开发, 调整, 提高采收率, 配套技术