泡排剂的应用

徐 强

中国石油川庆钻探工程有限公司生产运行处 610051

摘 要

在天然气开发过程中，当气井产水时，气藏能量将会降低，逐渐变成间歇井，甚至因井底严重积液而停产。泡沫排水采气是一种经济性高、效率高、施工方便的排水采气技术。泡沫排水也存在很大的局限性，它一般受井深、井温、及产层水质的矿化度等多种条件的限制。本文针对不同油田的地层水矿化度、温度等情况，通过实验选择有效的泡排剂以维护天然气井的正常生产；通过实验测试泡排剂在不同环境下的适应能力和各种性能以满足天然气开采的需要。研究结果表明泡排剂在不同矿化度的水样中以及不同的温度下其效果不一致，相对来说，泡排剂CT5-2的性能更稳定，效果更明显。 关键词：气井 泡排剂 泡沫排水 机理

Application of foam scrubbing agent foam scrubbing agent

XUQIANG

Manufacture operation department of CNPC ChuanQing Drilling and exploration Co,ltd 610051

ABSTRACT

While being spirit well to produce water in the natural gas the development the process, the spirit hides energy and will lower, become intermittent well gradually and even stops production because the well bottom seriously accumulates a liquid. The foam catchment adopts spirit to be a kind of economic sex Gao, efficiency Gao and start construction convenient catchment to adopt a spirit technique. The foam drains to also exist to very greatly limit sex, it is generally subjected to well deep, well, and produce 1 F the mineral of the fluid matter to turn one degree's etc. is various conditional restrictions. This design to the geologic strata water mineral of different oil-field turns circumstances, such as degree and temperature...etc. and pass an experiment choice a valid bubble row with the maintenance natural gas well of

normal produce; Orientation ability and various function passing the experiment test bubble row under the different environment with satisfy the natural gas mine of demand. Study the result enunciation bubble row in the different mineral turn the water kind of degree and the different temperature descend its effect inconformity, opposite to say, the function which steeps a row CT5-2 more stable, the effect is more obvious.

Keyword: Annoy well；Steep a row；The foam drain；Mechanism

目 录

摘 要................................................................................................................................. 1 ABSTRACT ...................................................................................................................... 1 1 绪 论............................................................................................................................. 4 2 泡排剂与泡排工艺....................................................................................................... 5 2.1 泡排工艺.................................................................................................................. 5 2.1.1 泡沫排水采气的机理........................................................................................... 5 2.1.2 注入方法............................................................................................................... 5 2.1.3 泡排剂的注入量及日加药次数........................................................................... 5 2.2 泡排剂的发展.......................................................................................................... 6 2.2.1 泡排剂的性能....................................................................................................... 6 2.2.2 泡排剂的类型....................................................................................................... 7 2.2.3 泡排剂的指标....................................................................................................... 7 2.2.4 泡排剂性能评价方法........................................................................................... 7 2.2.5 泡排剂的适用条件............................................................................................... 8 2.2.6 泡排剂的选择....................................................................................................... 9 2.3 泡沫的稳定机理...................................................................................................... 9 2.3.1 泡沫中液体的流失............................................................................................. 10 2.3.2 泡膜的透气性..................................................................................................... 10 2.4 影响泡沫稳定性的因素........................................................................................ 10 2.4.1 起泡溶液的表面张力......................................................................................... 10 2.4.2 表面粘度 ................................................................................................... 11 2.4.3 溶液粘度 ................................................................................................... 11 2.4.4 液膜的表面电荷................................................................................................. 11 2.4.5 泡沫质量............................................................................................................. 11 2.4.6 压力和气泡大小分布......................................................................................... 12 2.4.7 温度..................................................................................................................... 12 3 结论与建议............................................................................................................... 12 参 考 文 献................................................................................................................... 13