PSI - Issue 47

Saud Alsaghir et al. / Procedia Structural Integrity 47 (2023) 437–447 Saud Alsaghir/ Structural Integrity Procedia 00 (2023) 000 – 000

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Figure 2. Two-dimension illustration of the test lubricant system.

3. Characterization The elemental composition of the received samples was determined using inductively coupled plasma optical emission spectrometry (ICP-OES PlasmaQuant® PQ 9000). A universal hardness testing device (INNOVA-model 783-D, 2012) was used to measure the hardness values of the samples that were received. The wear depth was measured using an in-situ lateral displacement indicator which was calibrated with GT-K Contour 3D optical profilometer (Bruker Nano) depth measurement for previous tests. However, the maximum wear depth measured using the profilometer for one of the conducted tests was 106 µm, while the in-situ depth measurement was 110 µm, therefore, the error between the two measurements is almost 3.77%. that is, an in-situ displacement indicator will be used to measure the wear depth in the experiment.

4. Result and Discussion 4.1. Material composition and hardness

The average measured material compositions for the three steel-grade casings and the tool joint using optical emission spectrometry are shown in Table (1). Rockwell Hardness tester was used to measure the hardness of each casing sample and the tool joint. The average measurements of the hardness are shown in Table (2). Table 1. Average elemental compositions of the three materials & drill pipes.

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