Conductance Study on The Effect of Torsion of Drilling Pipe on The Inside Pattern Fluid Flow

Abstract

The drilling pipe with convoyed water is commonly concentrated in the present day due to the internal and external complex forces exposed to it. Pumping fluid pressure, hydrostatic head and torsion forces are classified as internal forces, while the drilling wall of the pipe and the total deformation caused by these exposed forces are external forces. In this study, the total deformation generated was analysed. Two cases were examined as a standard operating Craft and Graves [1]. The drilling pipe is made of steel with dimensions length (1.5 m); outer diameter (4 in or 101.6 mm) and inner diameter (3.34 in or 84.836 mm). The parameters were modelled by using (INVENTOR PROF 2016 and ANSYS, V. 16.1 software). The results obtained showed that increasing the twisting force on the drilling pipe walls leads to increment in the radial water flow displacement.

A comparison study of the behaviors of single-phase turbulent flow at low to moderate Reynolds numbers through a vertical pipe: 3D counters analysis

“…Fig. 3 shows an approximate starting velocity deviation before the center of pipe diameter by (17 mm) and by symmetrically after the center of diameter at the distance of (34 mm). It can conclude that the present model is worthily used for the 3D water at turbulent flow upward in a vertical pipe.…”

“…13 illustrated the total deformation of the water element flowing inside the pipe. Under a 3D simulation when water is pumped upward in a vertical pipe, this acts as a forced draught system on the water element and led the clutch to deform the water element in an inlet and outlet due to the change in the exerted pressure on it [3].…”

“…While the paper [2] is presented the 3D analysis of the pressure drop of fluid flow through fittings. The behavior of fluid motion inside the vertical drilling pipe is presented in [3]. The study [4] is focused on analyzing the fluid flow inside the pipe with 2D and 3D models in many applications such as pipe networks, Tee-junction, elbow, bending straight pipes at different positions, drilling pipes, etc.…”