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Design and Analysis of the Composite Hollow Glass Spheres Separator for Dual-Gradient Drilling in Deep Water

  • Ruiyao Zhang
  • Jun LiEmail author
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 75)

Abstract

Aiming at improving the HGS injection and separation issue in HGS dual-gradient drilling(DGD) in deep water, the underwater two-stage composite separator with axial vane to guide flow and no smooth straight cone section has been designed. The traditional tangential inlet is designed to the type of axial vane guiding flow in axial direction. The types of Hyperbola and parabola sections are used to replace the smooth straight cone ones in two stages respectively. The composite separator is provided with a hollow thin-walled pipe with a wall holes from the first overflow outlet to the second bottom outlet in the axial direction. The three dimensional modeling of the composite separator has been established by SolidWorks. The RNG κ-ε is adopted to describe the turbulence model in internal flow field and solid-liquid two phase flow is depicted by Euler model equation. At last, the is numerical simulation is directed by fluent software. The results show that the composite separator can achieve high separation efficiency and overflow ratio. To some extent, the study can promote the development of HGS dual-gradient drilling in deep water.

Keywords

Dual-Gradient drilling The hollow glass spheres Axial vane Two stage Fluent 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.College of Petroleum Engineering, China University of PetroleumBeijingChina

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