开发过程中普遍存在注水井长期注入压力居高不下、注入量低、单井注入压力差异大等问题。
It universally exists that injected pressure is high in a long time, injected water volume is low, the difference of injected pressure of each well is very large during oilfield development.
低和特低均质储层中的渗流启动压力对渗流速度、油藏产量递减规律、产水规律和注入水的波及范围都有影响。
In low and ultra-low homogeneous reservoir start-up pressure have an impact on the flow rate, reservoir production decline law, water production laws and injected water sphere of influence.
研究结果表明：特低渗油藏在不同开发方式开发过程中，注入压力都表现为先上升后下降，最后趋于稳定值；
The results show that: in the ultra-low permeability permeable reservoirs development process, injection pressure increases first and then decreases, at last stays stable;
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