Research on Energy Saving for Multi-Back after Blending Water from One Station System’s Parameters Optimization

Abstract:

The process of multi-back after blending water from one station is used in a block of Daqing oilfield, for saving energy, reducing consumption and easy to manage. For this block’s water blending system, research on its blending parameters optimization is carried on. According to the block’s characteristic of the process, the characteristic of energy cost minimum as objective function, setting up the multi-back after blending water from one station system’s parameter optimization mathematical model[1]. The model belongs to nonlinear programming problems with constraints, the mixed penalty function method and the improved conjugate direction method are used to solve the model, the optimum water blending temperature is determined by optimization calculating as 62.1°C and quantity of blending water a year is 1.13×105 t . By doing so, running costs saved 220,000 yuan per year to achieve the goal of saving energy and reducing consumption.

• Periodical: Advanced Materials Research (Volume 1023)
• Pages: 187-191
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1023.187
• Online since: August 2014
• Authors: Feng Yun He*, Fan Wang
• Keywords: Mathematical Models, Optimal Control, Reducing Consumption, Saving Energy, Water Blending, Water Transferring

References

[1] Trallero, J.L. et al. A study of oil-water flow patterns in horizontal pipes[J]. SPE 36609, (1995).

[2] Neogi S, Lee A, Jepson WP : A Model for Multiphase (gas - water - oil ) St ratified Flow in Horizontal Pipeline[J]. SPE 28799, (1994).

DOI: 10.2118/28799-ms

[3] Federal de Our Petrol, Brazil. Temperature Distribution in Well bores and Pipelines[J]. SPE, 1992 , 20432: 363~370.

[4] Herm Stapelberg H. The pressure loss and slug frequency of liquid-liquid-gas Slug flow in orizontal Pipes[J]. Int J Multiphase Flow, 1993, 20(2): 25～28.

DOI: 10.1016/0301-9322(94)90083-3

[5] Angeli P , Hewitt G F. Flow st ructure in horizontal oil-water flow[J]. Int J Multi phaseFlow , 2000 , 26: 1117～1140.

DOI: 10.1016/s0301-9322(99)00081-6

[6] Stapelberg H, Mewes D1 Pressure - drop calculation in three-phase slug flow of water, oil and air [J]. Int1 Chemical Engineering, 1994, 34 (3): 295～314.

[7] VN Manzhai, AV I yushnikov, MMGareev, etal. Lab-oratory Studies and Commercial Tests of a Polymerie Agent for Reduetion of the Power Consumption on an oil Pipeline[J]. Journalof Engineering Physics and Thermophysics, 1993, 65(5): 1041~1044.

[8] Polak, e. Higgins, J.E. And Mayne, D.Q. A barrier function method for minimax problems, Mathematical Programming, 1992, 54: 155-176.

DOI: 10.1007/bf01586049