目前高含水期油田中使用的流體取樣式電容法產(chǎn)出剖面測井儀因其精度低不能滿足測量高含水油田含水率的要求. 為此,利用同軸線作傳感器,使油水混合介質(zhì)在同軸線內(nèi)流動,通過測量油水混合介質(zhì)的相位系數(shù)來得到油水混合介質(zhì)的含水率. 研制的儀器不但提高了測量精度,還實現(xiàn)了油井含水率以往難實現(xiàn)的連續(xù)測量. 模擬井試驗和現(xiàn)場試驗結(jié)果表明了該油井含水率測量方法的新穎性及實用性.
關(guān)鍵詞: 含水率; 同軸線; 電磁波; 連續(xù)測量
Abstract : The difference in dielect ric property between oil and water is so great that their phase constant s of elect romagnetic waves are quite different . The mixture of oil/ water flows inside the coaxial line used as a sensor . The water content in the oil/ water mixture can be measured by measuring the phase constant . The measuring inst rument can improve the measuring accuracy of water content , and realizes continuous mea2 surement of water content in oil well. Simulation result s and on2site measurement s show this way of mea2
suring water content is new and practical.
Key words : water content ; coaxial line ; elect romagnetic wave ; continuous measurement