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大庆油田已进入开发的中后期 ,随着投产时间的延长和作业次数的增加 ,井况变差 ,作业井和待大修井逐年增多 ,尤其由于高压注水、地质和工程技术等因素造成的套损井逐渐增多。目前 ,大庆约有 6 0 0 0多口套管损坏井 ,占投产油水井总数的 17.2 2 % ,对油田可持续发展影响巨大。根据深部取套修井技术在大庆地区的应用情况 ,介绍了深部取套修井工艺、深部取换套方法、修井施工中出现的问题及解决办法 ,对发展深部取套工艺提出几点建议 ,为国内各油田深部取套修井提供参考。
Daqing oilfield has entered the middle and late stages of development. With the prolongation of production time and the increase of operations, the well conditions deteriorate and the number of work wells and over-service wells is increasing year by year. In particular, casing damage due to high-pressure water injection, geological and engineering technologies Wells gradually increased. At present, there are about 60,000 casing damage wells in Daqing, accounting for 17.2% of the total number of oil and water wells put into operation, which has a huge impact on the sustainable development of the oilfield. Based on the application of deep welling and overhauling technology in Daqing region, this paper introduces the methods of deep welling and overhauling, the method of deep replacing casing, the problems and solutions in well construction, and puts forward some suggestions on developing deep well casing technology , Providing a reference for deep welling of all oilfields in China.