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| Prediction of CaCO3 scaling quantity in water injection wellbore |
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YANG Xiao xi1, ZHAO Lei2, ZHANG Ding yong2, TAN Hong qi3
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(1.College of Transport ＆ Storage and Civil Engineering in China University of Petroleum, Dongying 257061, China;2.Xianhe Oil Production Plant, Shengli Oilfield, Dongying 257068, China;3.CNPC Engineering Incorporation, Beijing 100011, China)
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| Abstract: |
| Taking the water injection wellbore as object, combining the heat transfer theory with the scaling prediction technology, a scaling prediction mathematical model of water injection wellbore was established according to the heat transfer process and fluid flow process of injection water along wellbore. The changes of water injection rate,temperature, pressure, pH value, ion mass concentration were also taken into consideration. The scaling prediction software of water injection well was developed. The quantity of CaCO3 scaling in the water injection well was predicted by using the software in Shengli Oilfield. The results show that the prediction accords with the real situation. Accurate prediction of the wellbore scaling can provide basis for taking scale control and scale removal measurement in oilfield. |
| Key words: scaling prediction water injection well wellbore mathematical model |
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