坪北油田套管损坏井治理技术研究

近年来,坪北油田套管损坏井的数量呈现快速增长趋势。套管损坏井不仅影响油水井正常生产、造成可采储量损失,而且存在污染洛河层水源的风险。目前套损井治理技术主要包括:膨胀管补贴与封隔器卡堵技术,由于工艺技术上存在一定缺陷,现场应用范围受限。因此,通过研究周边同类型油田的套损井治理技术,并积极开展适应性评价与先导现场试验,为指导下步坪北油田套损井的治理奠定技术基础。

Research of Technology Used to Treat Casing Damage Wells in Pingbei Oilfield

Casing damage wells have been increasing rapidly in Pingbei Oilfield in recent years. They influence regular production of oil--water wells, which causes the loss of recoverable reserve. In addition, Luohe layer headwaters may be at risk of being polluted. Casing damage wells are now treated mainly by patching with the expansion pipe or blocking with the packer. However, some defects These two techniques have limit their range of field application. In order to lay a technological foundation for next treatment of casing damage wells in Pingbei Oilfield, a research has been carried out on the treatment technology used in neighboring oilfields which are of the same type. And also, efforts have been made to conduct an assessment on its adaptability and to make a guidance experiment.