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通过雅克拉、大涝坝凝析气田凝析气井井口取样化验含水试验,认为凝析油的极易分离分层的性质是造成取样含水波动异常的根本原因。由此造成手动随机性井口取样,凝析气井液相到达井口时,液相含水应该不同,即含水存在着客观上的波动性。立管内、集输水平管线油水以分层流动状态存在和取样时需控制阀门开度的现场实际情况,很难准确取到管线内能代表真实含水的样品。建议井口取样应优先立管,虽也有缺点,但相对其他位置取样,取样含水更准确性、实用性更好。
Through the experiment of aquifer sampling in condensate gas well in Accra and Daluoba condensate gas field, it is considered that the nature of easily separating and delaminating condensate oil is the fundamental reason causing the abnormality of sampling water fluctuation. As a result, random random wellhead sampling is taken. When the condensate gas well reaches the wellhead, the liquid water content should be different, that is, the water content has objective volatility. Vertical pipe, set the level of oil and water pipelines to the existence of stratified flow and sampling need to control the valve opening of the actual situation at the scene, it is difficult to accurately get the pipeline can represent the real water-containing samples. It is suggested that sampling of wellhead should take priority for riser, though it has some shortcomings. However, it is more practicable to sample water samples more accurately than others.