Optimization of Oil Production Parameters of Rod Pump for Low-Productivity Wells in Ultra-Low Permeability and Tight Oil Reservoirs

WEI Hangxin; XU Jianning; ZHAO Yajie; HUANG Hua; XI Wenkui

doi:10.11911/syztjs.201706015

Volume 45 Issue 6

Nov. 2017

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Petroleum Drilling Techniques > 2017 > 45(6): 83-87. > DOI: 10.11911/syztjs.201706015

WEI Hangxin, XU Jianning, ZHAO Yajie, HUANG Hua, XI Wenkui. Optimization of Oil Production Parameters of Rod Pump for Low-Productivity Wells in Ultra-Low Permeability and Tight Oil Reservoirs[J]. Petroleum Drilling Techniques, 2017, 45(6): 83-87. DOI: 10.11911/syztjs.201706015

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Optimization of Oil Production Parameters of Rod Pump for Low-Productivity Wells in Ultra-Low Permeability and Tight Oil Reservoirs

1.
School of Mechanical Engineering, Xi’an Shiyou University, Xi’an, Shaanxi, 710065, China;
2.
Research Institute of Shaanxi Yanchang Petroleum(Group) Co. Ltd., Xi’an, Shaanxi, 710075, China

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Received Date: April 26, 2017
Revised Date: November 03, 2017

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Abstract

Abstract

It is difficult to optimize the working system of the rod pump due to low production and high energy costs of low-productivity wells in ultra-low permeability and tight oil reservoirs.By using bottom-hole pressure data of those oil producers,the model for the optimization of oil production parameters is built on the basis of the flow integral equation.By adopting the model,some parameters such as stroke length,stroke frequency,production time and shut-in time can be optimized without compromising steady peak production of those oil producers.Optimization of these parameters can effectively save energy and reduce costs.Experiments in 163 oil wells in the Qilicun Oilfield showed that energy consumption can be reduced up to 25.9% through the application of the technique to optimize the production time.Research results show that optimal model for oil production parameter based flow integral equations can effectively eliminate errors from previously applied techniques.This technique can effectively reduce energy consumption of the rod pump system to enhance overall performances of the oilfield.
- ultra-low permeability,
- tight oil reservoir,
- rod pump,
- oil production parameter,
- intermittent cycle,
- Yanchang Oilfield

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References

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Optimization of Oil Production Parameters of Rod Pump for Low-Productivity Wells in Ultra-Low Permeability and Tight Oil Reservoirs

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