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Physicomechanical Properties of Compositions Based on Butadiene–Nitrile Rubbers after Long-Term Exposure to a Drilling Fluid


The influence of a drilling fluid on the physicomechanical properties of commercial rubbers of two types (RTD-1, RTD-2), which are used as stator coatings for downhole drilling motors, is studied. Prolonged (60 days) contact with a drilling fluid at 25°C is found to increase the stiffness and the coefficient of mechanic loss of rubber. The stability of the properties of RTD-1 rubber during operation in contact with a drilling fluid is shown to be higher than that of RTD-2 rubber. At 80°C, the elastic–hysteresis properties of the rubbers of both types have deteriorated by 30–50%.

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Correspondence to A. A. Mironova.

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Translated by I. Moshkin

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Mironova, A.A., Aptukov, V.N., Poturaev, P.S. et al. Physicomechanical Properties of Compositions Based on Butadiene–Nitrile Rubbers after Long-Term Exposure to a Drilling Fluid. Russ. Metall. 2022, 400–403 (2022).

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  • rubbers
  • stator coating
  • butadiene–nitrile rubbers
  • drilling fluid
  • hysteresis loop