Design of a Novel Protector for Sucker Rod Pumps Using Wire Rope

Research output: ThesisMaster's Thesis

Abstract

The invention of the rod guide or protector, whether used in reciprocating or rotating sucker rod strings, is meant not only to centralize the rod strings but also to serve as a paraffin scrapper. Since 1927, rod guides have changed considerably in terms of the materials used and design, in order to provide more protection for rod strings as well as tubing, hence, increasing the mean time between failures (MTBF). The purpose of this study is to provide a design for protectors, used specifically for wire ropes which activate downhole pumps. Since the rod rotator cannot be utilized in a sucker rod pump using wire ropes, the protector was designed with four ribs forming circumferential scraping effect with 360° on the interior wall of the tubing. This protector consists of two identical parts that can be installed on the wire rope in the field. CFD simulations were performed with the software Ansys to define the proper length and diameter of the designed protector, which led to acceptable pressure drops and erodible wear volume.
Translated title of the contributionEntwicklung eines innovativen Protektors für Gestängetiefpumpen mit Drahtseil
Original languageEnglish
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Fazeli Tehrani, Fatemeh, Co-Supervisor (internal)
  • Hofstätter, Herbert, Supervisor (internal)
Award date25 Oct 2019
Publication statusPublished - 2019

Bibliographical note

embargoed until 06-09-2024

Keywords

  • sucker rod pumping
  • artificial lift systems
  • wire rope
  • rod guide
  • EWV
  • CFD

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