锚定补偿式分层注水管柱研究及应用

Anchoring compensating separate layer waterflooding string.

针对常规分层注水管柱受温度效应和压力效应影响而产生蠕动 ,降低管柱使用寿命的问题 ,研制成具有锚定和补偿性能的新型锚定补偿式分层注水管柱。这种管柱采用由补偿器、水力锚和支撑卡瓦组成的锚定补偿机构 ,改善了封隔器的受力条件 ,有利于提高注水管柱的工作寿命。还新研制了与注水管柱配套的ZJK配水器 ,解决了压缩式封隔器坐封时需投捞死芯子的问题。锚定补偿式分层注水管柱已现场应用 50多井次 ,均正常注水 ,其中最大井深 34 0 0m ,最高注水压力 2 8 5MPa ,最长工作时间 30个月 ,是目前比较先进的分层注水管柱。

The conventional separate layer waterflooding string vibrates slightly owing to the influence of temperature effect and pressure effect, therefore the string's service life is lowered. A new separate layer waterflooding string with the functions of anchoring and compensation is developed. The new string adopts a anchoring and compensating mechanism comprised of compensator and hydraulic anchor and holding slip, improves the force condition of the packer. ZJK water distributor is also developed to solve the problems with packer setting. The new string was successfully used 50 times in the oilfield. The maximal depth of well is 3400m, the maximal waterflooding pressure is 28.5MPa, and the longest working time of the string is 30 months.