Cause Analysis on Fracture of Fiberglass Sucker Rod

SONG Chengli; SONG Wenwen; LI Yan; LI Na; LIANG Minghua; ZHANG Huajia

doi:10.11973/lhjy-wl202008017

PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING > 2020 > 56(8): 70-73. > DOI: 10.11973/lhjy-wl202008017

SONG Chengli, SONG Wenwen, LI Yan, LI Na, LIANG Minghua, ZHANG Huajia. Cause Analysis on Fracture of Fiberglass Sucker Rod[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2020, 56(8): 70-73. DOI: 10.11973/lhjy-wl202008017

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Cause Analysis on Fracture of Fiberglass Sucker Rod

1. State key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi'an 710077, China;
2. PetroChina Tarim Oilfield Company, Korla 841000, China

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Received Date: October 09, 2019

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The fracture accident of fiberglass sucker rod occurred in the process of oil production. The fracture causes of the fiberglass sucker rod were analyzed by means of size measurement, glass transition temperature detection, resin content detection, mechanical property test and hardness test. The results show that the tensile strength of the fiberglass sucker rod was lower than the required value, and it bore repeatedly tension and compression during operation. The fiberglass gradually fractured into a split and scatter shape. The eccentric wear between coupling and shaft wall accelerated the fracture of rod.
- fiberglass sucker rod,
- fracture,
- tensile strength,
- split and scatter,
- eccentric wear

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