Experimental methodology for determining gas-abrasive wear of field equipment elements

UDK: 620.16
DOI: 10.24887/0028-2448-2020-3-78-82
Key words: erosion, gas-abrasive wear, mineral impurities, gas field equipment, experiment, laboratory test, impact angle, velocity, mass loss
Authors: V.N. Abrashov (Sibneftegas JSC, RF, Novy Urengoy), V.V. Zhonin (RN-BashNIPIneft LLC, Ufa), R.N. Imashev (RN-BashNIPIneft LLC, Ufa), K.V. Litvinenko (RN-BashNIPIneft LLC, Ufa), A.G. Mikhaylov (RN-BashNIPIneft LLC, Ufa), M.I. Nasyrova (RN-BashNIPIneft LLC, Ufa), M.A. Skorobogach (Sibneftegas JSC, RF, Novy Urengoy), A.T. Faritov (Akrus-M SPE LLC, RF, Ufa)

The article is devoted to development of a methodology for studying the phenomenon of solid particles erosion of metals during interaction of a target material with abrasive particles in a gas stream. Gas-abrasive wear of gas field equipment elements as a result of mineral impurities removal from the formation is a common problem in the oil and gas industry, which is the cause of industrial accidents, outage, production losses, and expensive repair procedures due to premature failure of most significant elements of field equipment.

While developing a comprehensive erosion model, it is very important to determine the area of applicability and empirical data corresponding to the selected model. The current paper demonstrates a methodology for performance of laboratory sand blasting tests of materials, representing a pair ‘abrasive particles – steel’, in order to determine different steels’ gas-abrasive wear resistance ability, as well as to identify the most aggressive conditions from the point of view of erosion phenomenon. Sand blasting tests of materials were performed with the use of a special laboratory equipment installation, consisting mainly of an ejector tube for directing the atmospheric air flow containing mineral impurities, which is installed right in front of the rigidly fixed steel sample. The main goal of the experiments was to determine the dependences of the target material mass loss on the abrasive particles velocity magnitudes, the size of the particles, impact angle, and particles parcel mass. The design of the fastening of the target made it possible to install the sample at arbitrary angles to the air flow direction. Quartz sand was used as the material of abrasive particles. To capture the particle velocity, high-speed video shooting technology was used. According to the obtained data representing a range of dependences, basic empirical parameters such as a material constant and a velocity exponent were identified, and considered to be necessary for further mathematical modeling.

Experimental data obtained from the laboratory sand blasting tests will be used as input data for further numerical modelling of gas field equipment elements based on a new methodology for predicting of erosion rate of a range of field equipment and gas gathering pipeline system elements.

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