Effect of Coiled Tubing Curvature on Friction Pressure Loss of Newtonian and Non-Newtonian Fluids - Experimental and Simulation Study

2004 ◽  
Author(s):  
Samyak Jain ◽  
Naveen Singhal ◽  
S.N. Shah
Keyword(s):  
Simulation Study ◽  
Pressure Loss ◽  
Newtonian Fluids ◽  
Coiled Tubing ◽  
Friction Pressure

A model to calculate the pressure loss of Newtonian and non-Newtonian fluids flow in coiled tubing operations

2021 ◽  
Vol 204 ◽  
pp. 108640
Author(s):  
Beatriz Rosas Oliveira ◽  
Bárbara Cavalcante Leal ◽  
Leônidas Pereira Filho ◽  
Rodrigo Fernando de Oliveira Borges ◽  
Eduardo da Cunha Hora Paraíso ◽  
...  
Keyword(s):  
Pressure Loss ◽  
Newtonian Fluids ◽  
Coiled Tubing

Rheological Properties and Frictional Pressure Loss of Drilling, Completion, and Stimulation Fluids in Coiled Tubing

2004 ◽  
Vol 126 (2) ◽  
pp. 153-161 ◽  
Author(s):  
Yunxu Zhou ◽  
Subhash N. Shah
Keyword(s):  
Drag Reduction ◽  
Rheological Properties ◽  
Pressure Loss ◽  
Hydroxyethyl Cellulose ◽  
Test Facility ◽  
Drilling Mud ◽  
Polymeric Fluids ◽  
Pressure Losses ◽  
Coiled Tubing ◽  
Friction Pressure

The rheological properties and friction pressure losses of several common well-drilling, completion, and stimulation fluids have been investigated experimentally. These fluids include polymeric fluids—Xanthan gum, partially hydrolyzed polyacrylamide (PHPA), guar gum, and hydroxyethyl cellulose (HEC), bentonite drilling mud, oil-based drilling mud, and guar-based fracturing slurries. Rheological measurements using a Bohlin CS 50 rheometer and a model 35 Fann viscometer showed that these fluids exhibit shear thinning and thermal thinning behavior except the bentonite drilling mud whose viscosity increased as the temperature was raised. Flow experiments using a full-scale coiled tubing test facility showed that the friction pressure loss in coiled tubing is significantly higher than in straight tubing. Since the polymeric fluids displayed drag reducing property, their drag reduction behavior in straight and coiled tubings was analyzed and compared. Plots of drag reduction vs. generalized Reynolds number indicate that the drag reduction in coiled tubing was not affected by polymer concentration as much as in straight tubing. The onsets of turbulence and drag reduction in coiled tubing were significantly delayed as compared with straight tubing. The effect of solids content on the friction pressure losses in coiled tubing is also briefly discussed.

Coiled Tubing Fracturing Tube Pressure Loss Prediction Model

2013 ◽  
Vol 746 ◽  
pp. 515-519
Author(s):  
Dan Qiong Li ◽  
Shi Cheng Zhang ◽  
Suian Zhang
Keyword(s):  
Prediction Model ◽  
Pressure Loss ◽  
Rheological Parameters ◽  
Straight Pipe ◽  
Coiled Tubing ◽  
Friction Pressure ◽  
Loss Prediction ◽  
Pipe Segment ◽  
Basic Characteristics ◽  
Fluid Rheology

A coiled tubing pressure loss prediction model was established by fluid dynamics theory and method which based on the basic characteristics of the non-Newtonian fluid rheology; Construction displacement, sand ratio and well depth parameters of the pressure loss in the pipe, and calculated pipe pressure loss when the actual pumping process through examples. Thesis proposes: (1) the bend within the pressure loss is an important part of the pressure loss, should be based on the construction object to choice coiled tubing length reasonable, and minimize elbow paragraph length in order to reduce the pipe friction pressure loss. (2) Flow and sand ratio have the same impact of the law with the depth changes in the pressure loss of the straight pipe segment and elbow segment, increases linearly with the depth, flow or sand ratio the larger, more dramatic increase with the depth. Flow or sand ratio the larger the total pressure loss of the tube with the depth decreasing amplitude the greater. (3) According to the actual pump injection procedure, the tube fluid rheological parameters will change, inject pre-flush and replacement fluid the pipe pressure loss low; inject sand mixing liquid friction pressure loss high.

Effect of Coiled-Tubing Curvature on Friction-Pressure Loss of Xanthan Foams

2005 ◽  
Author(s):  
Parag Vijay Gujar ◽  
Subhash Nandlal Shah ◽  
Yunxu Zhou
Keyword(s):  
Pressure Loss ◽  
Coiled Tubing ◽  
Friction Pressure

Rheological and Hydraulic Properties of Drilling, Completion, and Stimulation Fluids in Straight and Coiled Tubings

2002 ◽  
Author(s):  
Y. Zhou ◽  
S. N. Shah
Keyword(s):  
Drag Reduction ◽  
Guar Gum ◽  
Polymer Concentration ◽  
Hydroxyethyl Cellulose ◽  
Test Facility ◽  
Drilling Mud ◽  
Polymeric Fluids ◽  
Pressure Losses ◽  
Coiled Tubing ◽  
Friction Pressure

The rheological properties and friction pressure losses of several fluids that are most commonly used as well drilling, completion, and stimulation fluids have been investigated experimentally. These fluids include polymeric fluids – Xanthan gum, partially hydrolyzed polyacrylamide (PHPA), guar gum, and hydroxyethyl cellulose (HEC), bentonite drilling mud, oil-based drilling mud, and guar-based fracturing slurries. Rheological measurements using a Bohlin CS 50 rheometer and a model 35 Fann viscometer showed that these fluids exhibit shear thinning and thermal thinning behavior except the bentonite drilling mud whose viscosity increased as the temperature was raised. Flow experiments using a full-scale coiled tubing test facility showed that the friction pressure loss in coiled tubing is significantly higher than in straight tubing. Since the polymeric fluids displayed drag reducing property, their drag reduction behavior in straight and coiled tubings was analyzed and compared. It was found that the drag reduction (DR) in coiled tubing is much lower than that in straight tubing. Plots of drag reduction vs. generalized Reynolds number indicate that the drag reduction in coiled tubing was not affected by polymer concentration as much as in straight tubing. The onsets of turbulence and drag reduction in coiled tubing were significantly delayed as compared with straight tubing. The effect of solids content on the friction pressure losses in coiled tubing is also briefly discussed.

Modeling of Hydraulic Line of Device Producing Fluctuant Load Based on Fluid Mechanics

2012 ◽  
Vol 252 ◽  
pp. 56-59
Author(s):  
Xian Bin Wang ◽  
Hong Xing Deng
Keyword(s):  
Fluid Mechanics ◽  
Pressure Loss ◽  
Hydraulic Pressure ◽  
Local Pressure ◽  
Line Model ◽  
Bench Tests ◽  
Friction Pressure ◽  
Experimental Bench ◽  
Pressure Characteristics

The paper deals with modeling of vehicle breaking system hydraulic line based on fluid mechanics. Under the consideration of friction pressure loss and local pressure loss in hydraulic line, an improved hydraulic line model is proposed. The experimental bench tests were carried out based on the device producing fluctuant load to verify the accuracy of the improved hydraulic line model. The system hydraulic pressure characteristics were analyzed by simulation using AMESim software.

Modeling of Newtonian Fluids in Annular Geometries With Inner Pipe Rotation

2010 ◽  
Author(s):  
Mehmet Sorgun ◽  
Jerome J. Schubert ◽  
Ismail Aydin ◽  
M. Evren Ozbayoglu
Keyword(s):  
Axial Velocity ◽  
Pressure Loss ◽  
Tangential Velocity ◽  
Flow Characteristics ◽  
Newtonian Fluids ◽  
Flow Loop ◽  
Eccentric Annulus ◽  
Pressure Losses ◽  
Proposed Model ◽  
Pipe Rotation

Flow in annular geometries, i.e., flow through the gap between two cylindrical pipes, occurs in many different engineering professions, such as petroleum engineering, chemical engineering, mechanical engineering, food engineering, etc. Analysis of the flow characteristics through annular geometries is more challenging when compared with circular pipes, not only due to the uneven stress distribution on the walls but also due to secondary flows and tangential velocity components, especially when the inner pipe is rotated. In this paper, a mathematical model for predicting flow characteristics of Newtonian fluids in concentric horizontal annulus with drill pipe rotation is proposed. A numerical solution including pipe rotation is developed for calculating frictional pressure loss in concentric annuli for laminar and turbulent regimes. Navier-Stokes equations for turbulent conditions are numerically solved using the finite differences technique to obtain velocity profiles and frictional pressure losses. To verify the proposed model, estimated frictional pressure losses are compared with experimental data which were available in the literature and gathered at Middle East Technical University, Petroleum & Natural Gas Engineering Flow Loop (METU-PETE Flow Loop) as well as Computational Fluid Dynamics (CFD) software. The proposed model predicts frictional pressure losses with an error less than ± 10% in most cases, more accurately than the CFD software models depending on the flow conditions. Also, pipe rotation effects on frictional pressure loss and tangential velocity is investigated using CFD simulations for concentric and fully eccentric annulus. It has been observed that pipe rotation has no noticeable effects on frictional pressure loss for concentric annuli, but it significantly increases frictional pressure losses in an eccentric annulus, especially at low flow rates. For concentric annulus, pipe rotation improves the tangential velocity component, which does not depend on axial velocity. It is also noticed that, as the pipe rotation and axial velocity are increased, tangential velocity drastically increases for an eccentric annulus. The proposed model and the critical analysis conducted on velocity components and stress distributions make it possible to understand the concept of hydro transport and hole cleaning in field applications.

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