scholarly journals THE RHEOLOGICAL MODEL OF LIMITED CREEP OF WOOD

2017 ◽  
Vol 27 (3) ◽  
pp. 182-186
Author(s):  
V.I. Kryshtapovych ◽  
Ya.I. Sokolovskyy
Keyword(s):  
Rheological Model ◽  
Limited Creep

scholarly journals A simple approach for adding thixotropy to an elasto-visco-plastic rheological model to facilitate structural interrogation of human blood

2021 ◽  
Vol 290 ◽  
pp. 104503
Author(s):  
Matthew Armstrong ◽  
Mathias Scully ◽  
Michael Clark ◽  
Trevor Corrigan ◽  
Corey James
Keyword(s):  
Human Blood ◽  
Rheological Model ◽  
Simple Approach

scholarly journals A new rheological model and its application in mountain tunnelling

2008 ◽  
Vol 23 (3) ◽  
pp. 292-299 ◽  
Author(s):  
Zhenchang Guan ◽  
Yujing Jiang ◽  
Yoshihiko Tanabashi ◽  
Hongwei Huang
Keyword(s):  
Rheological Model

Application of a New Rheological Model to Rock Avalanches: An SPH Approach

2016 ◽  
Vol 49 (6) ◽  
pp. 2353-2372 ◽  
Author(s):  
D. Manzanal ◽  
V. Drempetic ◽  
B. Haddad ◽  
M. Pastor ◽  
M. Martin Stickle ◽  
...  
Keyword(s):  
Rheological Model ◽  
Rock Avalanches

scholarly journals A rheological model for immersed corrugated elastic plates

Ultrasonics ◽  
2017 ◽  
Vol 75 ◽  
pp. 115-123
Author(s):  
D. Meier ◽  
H. Franklin ◽  
M.V. Predoi ◽  
M. Rousseau ◽  
J.L. Izbicki
Keyword(s):  
Rheological Model ◽  
Elastic Plates

Shear flow of a heterophase liquid interlayer and its structural-rheological model

2011 ◽  
Vol 56 (8) ◽  
pp. 1100-1105 ◽  
Author(s):  
B. A. Altoiz ◽  
S. K. Aslanov ◽  
S. V. Kiriyan
Keyword(s):  
Shear Flow ◽  
Rheological Model ◽  
Liquid Interlayer

Hole-Cleaning Fibers Improve Cuttings-Carrying Capacity

2021 ◽  
Vol 73 (05) ◽  
pp. 63-64
Author(s):  
Chris Carpenter
Keyword(s):  
Flow Regime ◽  
Carrying Capacity ◽  
Rheological Model ◽  
Drilling Fluid ◽  
Test Method ◽  
Abu Dhabi ◽  
Rheological Parameters ◽  
Cleaning Efficiency ◽  
Hole Cleaning ◽  
Drilling Operations

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 203147, “Investigating Hole-Cleaning Fibers’ Mechanism To Improve Cutting Carrying Capacity and Comparing Their Effectiveness With Common Polymeric Pills,” by Mohammad Saeed Karimi Rad, Mojtaba Kalhor Mohammadi, SPE, and Kourosh Tahmasbi Nowtarki, International Drilling Fluids, prepared for the 2020 Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, held virtually 9–12 November. The paper has not been peer reviewed. Hole cleaning in deviated wells is more challenging than in vertical wells because of the boycott effect or the eccentricity of the drillpipe. Poor hole cleaning can result in problems such as borehole packoff or excessive equivalent circulating density. The complete paper investigates a specialized fibrous material (Fiber 1) for hole-cleaning characteristics. The primary goal is to identify significant mechanisms of hole-cleaning fibers and their merits compared with polymeric high-viscosity pills. Hole-Cleaning Indices Based on a review of the literature, most effective parameters regarding hole cleaning in different well types were investigated. These parameters can be classified into the following five categories: - Well design (e.g., hole angle, drillpipe eccentricity, well trajectory) - Drilling-fluid properties (e.g., gel strength, mud weight) - Formation properties (e.g., lithology, cutting specific gravity, cuttings size and shape) - Hydraulic optimizations (e.g., flow regime, nozzle size, number of nozzles) - Drilling practices (e.g., drillpipe rotation speed, wellbore tortuosity, bit type, rate of penetration, pump rate) In this research, rheological parameters and parameters of the Herschel-Bulkley rheological model are considered to be optimization inputs to increase hole-cleaning efficiency of commonly used pills in drilling operations. The complete paper offers a detailed discussion of both the importance of flow regime and the role of the Herschel-Bulkley rheological model in reaching a better prognosis of drilling-fluid behavior at low shear rates. The properties of the fibrous hole-cleaning agent used in the complete paper are provided in Table 1. Test Method Two series of tests were performed. The medium of the first series is drilling water, with the goal of evaluating the efficiency of Fiber 1 in fresh pills. The second series of tests was per-formed with a simple polymeric mud as a medium common in drilling operations. Formulations and rheological properties of both test series are provided in Tables 4 and 5 of the complete paper, respectively.

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