套管漏失水井地层吐水现象的认识与治理

Recognization and Treatment of the Phenomena of Casing Leaked Water Wells Spiting Water to the Formation

雷芳英 王学玲 刘颖峰 姜淑霞 张健泉

中原油田分公司采油二厂

The NO. 2 Oil Production Division , Zhongyuan Oilfield Company ,SINOPEC, Henan 457506 , P. R. China

随着油田开发时间的延长,套管漏失的油、水井越来越多。对于套管错断等原因无法大修的井常常报废关井,寻找新的代替井。近几年在动态分析中经常发现在注采比合理的情况下,油井能量得不到保障或者水井注水压力反常。通过调查、分析、试验,证实正常水井注入水有向同层位的套漏井漏点吐水的现象。因此,通过井温测试证实后,对存在吐水现象的井注灰封堵油层,不仅增加了水驱控制储量和水驱动用储量,而且很快取得了极为可观的增油效果。

With the development of the oilfield , the casing leakage of oil and water wells become more and more. The abandoned wells in which casing disocated can’t be repaired and have to seek new replaced wells. The phenomena , that the energy unavailability of oil wells and the anomaly of water injection pressure of water wells under the reasonable injection-production ration in dynamic analysis was taken place frequently. The normal injection wells spit water to the wells of the same layer formation through the casing leakage was analyzed Therefore , the temperatrue logs were conducted to confirm the suspicious casing leak wells and sealed the oily layer , which can not only increase the water drive control reserve and movable reserve , getting appreciable economic effect .