The cyclic water-flooding method is effective for development of oil in low-permeability matrix of limestone reservoir and unsuitable for the oil-wet reservoir.
周期注水是开发灰岩储层低渗透基质中原油的一种有效方法，但对于亲油储层效果较差。
To prevent this, the wet gas that is produced is often stripped of condensate and the dry gas is reinjected into the reservoir (cycling) to maintain reservoir pressure.
为了防止出现这种情况，所产出的湿气通常要脱除凝析油，并将干气再注入储层(干气回注)以保持储层压力。
Natural gas in Yingnan Gas Reservoir 2 is mainly composed of hydrocarbon gas, it belongs to wet gas with high hydrocarbon content.
英南2气藏天然气以烃类气体为主，重烃含量较高，属湿气；
The conclusion is: capillary force is in first, elastic force is in second, water-wet oil reservoir is more suitable to cyclic water injection.
结论是，毛管力的作用是第一位的，弹性力的作用是第二位的，水湿油层更适合周期注水。
The sandstones of reservoir act as slightly water-wet.
储层砂岩表现为弱亲水。
The sandstones of reservoir act as slightly water-wet.
储层砂岩表现为弱亲水。
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