block du 84 of shu 1 district, liaohe oilfield, is a representational block, which has the hard-producing extra-heavy oil reserves with a larger size in liaohe oilfield.
曙一区杜84块是辽河油田超稠油难采储量中规模较大的具有代表性的区块,开发中存在注汽困难、生产周期短、油井作业频繁热损失大、地层普遍出砂、综合成本高、开采难度大等一系列问题。