Research Article | OPEN ACCESS
Research of Optimization Method of Swabbing Parameters of All Rods Pumping Wells in the Entire Oilfield
1Zhang Xishun, 1Wu Xiaodong, 2Dong Shimin, 1Wu Di and 1Wang Danyang
1China University of Petroleum, Beijing 102249, China
2Yanshan University Qinhuangdao 066004, China
Research Journal of Applied Sciences, Engineering and Technology 2013 8:2630-2635
Received: September 06, 2012 | Accepted: October 09, 2012 | Published: March 15, 2013
Abstract
Aiming at the drawbacks of the optimization and design methods and the practical production goal of least energy consumption, a new theory is raised that the gas of the layer released energy in the lifting process including two parts: dissolved-gas expansion energy and free-gas expansion energy. The motor’s input power of rod pumping system is divided into hydraulic horse power, gas expansion power, surface mechanical loss power, subsurface loss power. Using the theory of energy-conservation, the simulation model of free-gas expansion power has been established, the simulating models of the motor’s input power which are based on the energy method have been improved and the simulation precision of system efficiency has been enhanced. The entire optimization design models have been set up in which the single-well output is taken as the optimum design variable, the planed production of all oil wells in an overall oilfield as the restraint condition and the least input power of the overall oilfield as the object. Synthesizing the optimization design results of the single well and the entire oilfield, the optimal output and the optimal swabbing parameters of all wells can be got. The actual optimizing examples show that the total power consumption designed by the entire optimization method is less 12.95% than that by the single optimization method.
Keywords:
Entire oilfield, gas expansion energy, least energy consumption, optimization, Pumping oil wellsystem efficiency,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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