EP 2963234 A1 20160106 - STRESS CALCULATIONS FOR SUCKER ROD PUMPING SYSTEMS
Title (en)
STRESS CALCULATIONS FOR SUCKER ROD PUMPING SYSTEMS
Title (de)
SPANNUNGSBERECHNUNGEN FÜR SAUGSTANGEN-PUMPENSYSTEME
Title (fr)
CALCULS DE CONTRAINTE POUR DES SYSTÈMES DE POMPAGE À TIGE DE POMPAGE
Publication
Application
Priority
US 201462019742 P 20140701
Abstract (en)
Techniques and apparatus are provided for stress calculations for sucker rod pumping systems. A method is provided for determining stress along a sucker rod string disposed in a wellbore. The method generally includes receiving, at a processor, measured rod displacement and rod load data for the sucker rod string, wherein the sucker rod string comprises a plurality of sections; and calculating stress values at a plurality of finite difference nodes for at least one of the plurality of sections based, at least in part, on the measured rod displacement and rod load data.
IPC 8 full level
E21B 43/12 (2006.01); E21B 47/00 (2012.01)
CPC (source: EP US)
E21B 43/127 (2013.01 - EP US); E21B 47/009 (2020.05 - EP US)
Citation (search report)
- [XI] WO 2013063591 A2 20130502 - WEATHERFORD LAMB, et al
- [XI] CA 2526345 A1 20070413 - PUMPWELL SOLUTIONS LTD [CA]
- [A] WO 2010051270 A1 20100506 - LUFKIN IND INC [US]
- [XI] T.A. EVERITT ET AL: "An Improved Finite-Difference Calculation of Downhole Dynamometer Cards for Sucker-Rod Pumps", SPE PRODUCTION ENGINEERING, vol. 7, no. 01, February 1992 (1992-02-01), pages 121 - 127, XP055217402, ISSN: 0885-9221, DOI: 10.2118/18189-PA
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2963234 A1 20160106; EP 2963234 B1 20180606; CA 2895793 A1 20160101; CA 2895793 C 20180605
DOCDB simple family (application)
EP 15174273 A 20150629; CA 2895793 A 20150629