The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 05, 2022

Filed:

Oct. 16, 2019
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/008 (2012.01); E21B 43/12 (2006.01); E21B 47/06 (2012.01); F04B 19/04 (2006.01); F04B 49/08 (2006.01);
U.S. Cl.
CPC ...
E21B 47/008 (2020.05); E21B 43/128 (2013.01); E21B 47/06 (2013.01); F04B 19/04 (2013.01); F04B 49/08 (2013.01);
Abstract

A method of preventing over-pressurization of a downstream piping network, using a safety VFD, includes continuously receiving, from sensors attached to an ESP, values representing input/output operating parameters of the ESP. The ESP is disposed in a wellbore and fluidically coupled to a piping network disposed at a surface of the wellbore. The method also includes comparing one or more values to operating parameter thresholds determined based on at least one of 1) expected ESP parameters during a blocked outlet condition of the piping network or 2) an association of the operating parameter threshold with a fluidic pressure of the piping network that has a potential of reaching an MAOP of the piping network. The method also includes determining that values meet the threshold and changing an input parameter of the ESP to change a fluidic output of the ESP to prevent the over pressurization of the downstream piping network.


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