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Petroleum Engineer

345 words | 2 page(s)

An article by Vajargah and van-Oort (2015), “Determination Of Drilling Fluid Rheology Under Downhole Conditions By Using Real-Time Distributed Pressure Data” is particularly essential to my career in petrolum engineering as it offers a unique method of identifying mud rheological properties in real-time by applying downhole sensory data. The idea presented by the authors would enable wells serve the same purpose as large pipe viscometer during drilling. In the proposed technique, the viscometer or well would be able to contain strategically placed sensors for reading pressure measurements. The approach is an essential development towards the realization of complete automation in drilling fluids.

Vajargan and van-Oort (2015) hold that the annular friction pressure loss is directly proportional to pipe oddness. That is, a decrease in the annular friction pressure is accompanied with an increase in pipe peculiarity, an effect that is more common in laminar flow. Besides, further improvements are necessary for pipe rotation, fillings in the wellbore cuttings, and hole cleaning. Validation of the technique was done via pressure information collected from wired drill pipe in field operations and trials using 12.6 ppg and 13.1 ppg synthetic related muds (Vajargan & van-Oort, 2015). Comparison between the rheological bounds of 12.6 ppg and 13.1 ppg mud beneath downhole events reveal that the 13.1 ppg is thicker due to the high concentration of solid matter. While the trial did not intend to meet timely measurement of rheology and failed to conform to recommended procedures, satisfactory results were obtained that help validate the new method.

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The thinner drilling fluid from the under downhole conditions can be due to extreme temperature effects for the particular case study. However, if more studies were sampled, there would be different better outcomes. More satisfactory results would automatically credit the approach. The method would minimize costs related to labor requirements. Similarly, the need for measurements at the surface level would be eliminated. Therefore, I highly recommend this technique in the drilling of petroleum compounds.

    References
  • Vajargah, A. K., & van-Oort, E. (2015). Determination of drilling fluid rheology under downhole conditions by using real-time distributed pressure data. Journal of Natural Gas Science and Engineering, 24, 400-411.

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