摘要
低渗油田注水过程中储层保护的关键是保护孔喉。以张天渠低渗油田为例,对储层敏感性和注入水水质进行评价,对储层伤害的内部潜在因素和外部诱发因素进行分析,诊断出储层损害的主要因素有水敏、速敏,注入水中固相颗粒堵塞及结垢堵塞,同时存在细菌堵塞、腐蚀物堵塞的可能。根据储层堵塞伤害原因,选择综合保护技术措施。
The key of reservoir protection is the protection of the pore throats during water injection in low permeability oilfields.The reservoir sensitivity and the injected water quality are assessed, taking the low permeability oilfield in Zhangtianqu as example, Meanwhile, the interior latent factors and exterior inducing factors of formation damage are analyzed. The main factors of formation damage include the water sensitivity, velocity sensitivity, solid particles blocking in injected-water and scale blocking, At the same time, the bacteria or corrosions object blocking are probable too, The integrated protection technology and measures are selected in terms of the reasons of formation damage.
出处
《断块油气田》
CAS
2008年第1期101-104,共4页
Fault-Block Oil & Gas Field
关键词
注水
储层保护
地层损害
低渗油田
water injection, reservoir protection, formation damage, low permeability oilfield.
