一种低压井泡沫冲砂液开发  

A FOAM SAND-WASHING FLUID DEVELOPED FOR LOW-PRESSURE WELLS

作　　者：周文 王铁钢 王涛 王仲广 吕睿 

机构地区：[1]中国石油大港油田石油工程研究院 [2]中海油能源发展公司采油技术服务分公司

出　　处：《天然气勘探与开发》2014年第2期81-84,14,共4页Natural Gas Exploration and Development

摘　　要：低压油气井修井冲砂过程中,常规入井液与储层压差大易产生漏失,造成储层伤害。为解决修井液与储层适用性,开发评价了一种适合于低压油气井作业的新型冲砂液体系。该体系具有密度可调、储层配伍性好、携砂能力强、封堵能力强和反相驱替渗透率恢复高等特点,解决了水平低压油气井冲砂困难、后期产能恢复周期长和减产的难题,现场作业应用效果良好。In the process of sand washing of low-pressure wells, lost circulation may be easily occurred due to large differential pressure between conventional working fluid and reservoir, further resulting in reservoir damage. So, a new sand-washing fluid system, which may be suitable for low-pressure wells, was developed and evaluated. This sys-tem is characterized by adjustable density, good compatibility, strong sand-carrying and plugging capacity, and excel-lent recovery of inverse displacement permeability. Meanwhile, it can solve such problems as difficulty in sand washing of horizontal wells with low pressure, long period of restoring productivity in the later development, and production re-duction. In general, it has achieved good results.

关 键 词：低压井 低固相 低密度 泡沫冲砂液 修井 

分 类 号：TE358[石油与天然气工程—油气田开发工程]