Rod Design Optimization of the Hydraulic Feedback Pump of Heavy
Oil Mixed with Light Oil

doi:10. 3863/j. issn. 1674 – 5086. 2013. 05. 023

Abstract

Abstract:

Tahe Oilfield is a carbonate reservoir with ultra-deep，ultra-heavy oil，which needs to mix with light oil. Sucker rod
pumps are mainly the hydraulic feedback heavy oil pump，which is designed specifically for heavy oil production. The stress
situation of hydraulic feedback heavy oil pump in mixing light oil wells was analyzed，and the sensitivity of various loading
factors was evaluated，and finally we put forward that producing fluid level and viscosity of the miscible liquids are the most
sensitive factors affecting the loading. On the basis of force analysis，we identify the problems of rod string designing method
at present and analyze the reasons of the rupture and out of joint of the sucker sod. Through a lot of comparison of the measured
and calculated data，we draw the conclusion that the stress error of optimized poles is smaller and the stress status evaluation is
more accurate. The optimized calculation method will be used to calculate the maximum pump depth for various combinations
of the oil extractor，rod and pump，and to guide the production management.

Key words: heavy oil, blending light oil, hydraulic feedback heavy oil pump, stress analysis, rod design optimization

Yuan bo, Du Linhui, Liang Zhiyan, Tang Jian, Jiang Jianhua. Rod Design Optimization of the Hydraulic Feedback Pump of Heavy
Oil Mixed with Light Oil[J]. 西南石油大学学报(自然科学版), DOI: 10. 3863/j. issn. 1674 – 5086. 2013. 05. 023.

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