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本文针对油田开发后期由于各种原因产生的杂质堵塞地层近井地带孔缝,从而导致油水井产油量和注水量下降,而普通酸洗等措施只能解决井筒及井筒周围非常有限距离的污染问题,对上述问题不能得到根本解决,同时由于处于开发后期地层出现亏空的现象,使正常的洗井工艺无法进行的实际情况,研发了水力喷射工具,具有利用高压水作为动力液,通过水嘴对堵塞地带进行冲洗,实现解堵的功能和特点,现场应用工艺成功率和有效率均为100%。
In this paper, due to the impurities in the late stage of oilfield development due to various reasons, the formation of holes near the wellbore is blocked, resulting in the decrease of oil and water production and water injection. Ordinary pickling can only solve the problem of very limited distance around wellbore and wellbore Problem, the above problems can not be fundamentally solved, and at the same time due to the shortage of strata in the late development phenomenon, so that the normal washing process can not be the actual situation, developed a hydraulic jetting tool, with the use of high-pressure water as the motive fluid through the tap The blockage zone to wash, to achieve the function and characteristics of plugging, field application process success rate and efficiency are 100%.