俄罗斯难采储量动用技术概览

Overview of technologies for difficult-to-recover reserves in Russia

自“一带一路”倡议提出后,中俄能源合作不断深化,俄罗斯已经成为中国重要的能源市场。随着俄罗斯油气资源开采的不断深入,多数已开发油田进入产量快速递减阶段。截至2020年,俄罗斯已探明储量的枯竭程度已超过55%,资源开采难度不断扩大,由于基础设施落后和缺少必要技术等原因,油田稳产难度越来越大。所以,需要不断更新技术工艺,进一步开发条件较差的储层来弥补产量下降。通过对俄罗斯难采储量开发领域进行调研,分析了开发其低渗透储层、巴热诺夫组页岩油、油田开发后期剩余油等难采储量时采用的一系列个性化钻采工艺技术(如水平井多级水力压裂、混相注入工艺技术等)的特点和优势,为国内同类难采储量的高效开发提供借鉴作用。

Since the Belt and Road Initiative was put forward,the energy cooperation between China and Russia has been deepening,and Russia has become an important energy market for China.With the further development of oil and gas resources in Russia,a large part of the developed oilfields have entered the stage of rapid production decline.By 2020,the depletion degree of proven reserves in Russia has exceeded more than 55%,and the resource exploitation and oilfield steady production were increasingly difficult due to the outdated infrastructure and a lack of the necessary technology.Therefore,it is necessary to continuously update the technology and further develop the reservoirs with poor conditions to make up for the decline in production.According to a survey of Russian oil giants,such as Rosneft,Gazprom and Lukoil oil companies,in the development of difficult-to-recover reserves,a series of personalized drilling and production technologies have been analyzed,such as multi-stage hydraulic fracturing in horizontal wells and miscible injection technology used to develop difficult-to-recover reserves,including low-permeability reservoirs,Bazhenov Formation shale oil,and remaining oil in the later stages of oilfield development.The technical characteristics and advantages were analyzed briefly,so as to provide a reference for the efficient development of similar difficult-to-recover reserves in China.