The results indicate that appropriate pressure field should be preserved in the process of sequent water flooding.
研究结果表明，后续水驱应保持合理压力场；
During viscous crude oil steam flooding, a high pressure steam water separator is introduced to improve steam quality and then enhance recovery factor.
为在稠油热采蒸汽驱阶段提高注汽干度，进而提高稠油开采率，引进了高压汽水分离器。
Surfactant flooding can reduce injection pressure increase quantity, and can improve the efficiency of flooding, can effectively solve the problems existing in the water.
表面活性剂驱可以降低注入压力增加注入量，又可以提高驱油效率，能够有效的解决注水中存在的问题。
Abnormal high pressure systems have formed in Anan Block of Erlian oilfield due to long time of water flooding, kicks, lost circulation and hole collapse are frequently encountered.
二连油田阿南区块，由于长期注水，油气层出现明显的异常高压，地层原始压力遭到破坏，造成了井涌、井塌、井漏等复杂事故。
The original elastic energy in low permeability reservoir is generally small, so all the oil fields early or late adopt water flooding to keep the pressure of the low permeability reservoir.
我国低渗透油藏的天然弹性能量普遍较小，所以基本上都先后采取了注水保持压力的开发方式。
The pressure of nitrogen drive is greater than that of carbon dioxide drive but less than that of water flooding.
注氮气开发注采压差大于注二氧化碳开发注采，小于注水开发注采压差；
The pressure of nitrogen drive is greater than that of carbon dioxide drive but less than that of water flooding.
注氮气开发注采压差大于注二氧化碳开发注采，小于注水开发注采压差；
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