亚极地海域油气田开发方式的选择

俄罗斯远东萨哈林岛大陆架上油气资源丰富，由于地处亚极地海域冬季海冰严重，年冰期在180 d 以上，单层冰厚可达1 m；并且萨哈林岛还处于多个地质板块的交汇处，地震灾害频繁，区域内海上油气田开发难度很大。针对当地不同的油气田，选择一种适合其特点的开发方式非常关键。通过对该海域已有几个油气田开发实践的分析，总结出了针对亚极地海域不同条件下油气田开发方式的选择依据，并对各开发方式下的单井成本进行了比较，推荐了该区域WEINI 凝析气田较理想的开发方案。这种亚极地海域油气田开发方式的选择方法，较全面地考虑了亚极地海域的环境因素，在现实中可以帮助作业者快速有效地做出决策。

Selection of oil/gas fields development modes in sub-polar offshore areas

Russian Far-East Sakhalin Island continental shelf has abundant oil/gas resources, but it is located in sub-polar offshore areas, so it has severe sea ice in winter. Yearly ice period is over 180 days and single layer of ice can be up to 1 m. Moreover, Sakhalin Island is on the intersection of several tectonic plates, so there are frequent earthquakes and it is also of great difficulty to develop the regional offshore oil/gas fields. In line with different local oil/gas fields, it is very critical to select a development mode suitable its characteristics. By analyzing the development practices for some existing oil/gas fields in this sea area, this paper has summarized the basis for selection of oil/gas field development modes under different conditions for sub-polar offshore areas, compared the costs of single wells under various development modes and recommended a favorable development program for WEINI condensate gas field in this area. This selection method for development mode of oil/gas fields in sub-polar offshore areas fully takes into account the environment factors of sub-polar offshore areas and can help operators make quick and effective decisions in practice.