Gas lift method is widely used to increases oil production rate. Establishment of heat transfer model and prediction of temperature profile are meaningful in designing gas lift valves and achieving high gas lift efficiency. In the heat transfer model, heat balance equations in tubing and annulus are built under steady state condition. Equations are derived with two boundary conditions. Joule-Thompson effect is considered when gas is pushed through the gas lift valve and this will make the temperature prediction more accurate than that in other models. Changes of temperature in tubing and annulus with depth is revealed in the case study. Temperature profile in the proposed model is compared with Hasan’s model and Gilbertson’s model and verified against field data. In sensitivity analysis, effects of the gas injection rate, oil production rate, heat conductivity of cement and tubing on temperature profile of tubing and annulus are discussed.
|Commitee:||Boukadi, Fathi, Feng, Yin|
|School:||University of Louisiana at Lafayette|
|School Location:||United States -- Louisiana|
|Source:||MAI 56/01M(E), Masters Abstracts International|
|Subjects:||Engineering, Petroleum engineering|
|Keywords:||Gas lift, Heat transfer, Joule-Thompson effect|
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