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随着油田开发时间的延长,特别是到油田开发的中,晚期,油水井井下套管的损坏将越来越严重,克拉玛依油田由于地质条件复杂,加上长期的注采开发,套管故障井的数目也越来越多.不仅使油水井无法正常生产(尤其是分层开采井),给井下作业(尤其是分层作业)造成困难,而且直接降低井的使用寿命,影响油田开发井网的完善和最终采收率,给整个油田开发的综合经济效益带来严重影响。实体膨胀管补贴技术适用套管损坏的任意井,能将补贴管在井下对接至所需长度,是修复套损井的一项切实可行,值得推广的修井技术。
With the development of oilfields prolonged, especially in the middle and late stages of oilfield development, casing damage of oil and gas wells will become more and more serious. Because of the complicated geological conditions in Karamay Oilfield, coupled with long-term injection and development, casing failure wells More and more not only the normal production of oil and water wells (especially the stratified production of wells), causing difficulties to downhole operations (especially stratified operation), but also directly reduce the service life of the well, affecting the well network The improvement and ultimate recovery rate have a serious impact on the overall economic benefits of the entire oilfield development. The solid expander subsidy technology is applicable to any well damaged by the casing pipe, and it can connect the subsidized pipe to the required length downhole. It is a feasible and worthwhile promotion workover technique for repairing casing damage.