Analysis of Tool Joint Effects for Accurate Friction Pressure Loss Calculations

2004 ◽  
Author(s):  
Yeon-Tae Jeong ◽  
Subhash N. Shah
Keyword(s):  
Pressure Loss ◽  
Joint Effects ◽  
Friction Pressure ◽  
Tool Joint

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.

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.

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

Research Pressure Loss Based on Gas Liquid Two Phrase Flow Experiment System

2013 ◽  
Vol 404 ◽  
pp. 302-306
Author(s):  
Yao Zhang ◽  
Wan Ling Zhang
Keyword(s):  
Pressure Drop ◽  
Pressure Loss ◽  
Experiment System ◽  
Internal Fluid ◽  
Friction Pressure ◽  
System Flow ◽  
Flow Experiment ◽  
Friction Pressure Drop ◽  
Water Rate ◽  
Main Factor

This paper discussed the pressure drop about the friction pressure drop and gravity pressure drop in the pipe. Represent the model of pressure drop. Calculate the pressure drop in the experiment system. Flow pattern and pressure drop has the directly relationship. And the friction pressure drop is the main factor of influences internal fluid mechanism. Pressure drop is basic of research the water rate and dynamics fluid.

The Hydraulic Effect of Tool-joint on Annular Pressure Loss

2011 ◽  
Author(s):  
Majed Sadeg Enfis ◽  
Ramadan Mohammed Ahmed ◽  
Arild Saasen
Keyword(s):  
Pressure Loss ◽  
Tool Joint
Sign in / Sign up

Export Citation Format

Share Document