Rheological Properties of PHPA Polymer Support
Rheological Properties of PHPA Polymer Support Fluids
TY - JOUR. T1 - Rheological properties of PHPA polymer support fluids. AU - Lam, Carlos. AU - Martin, P J. AU - Jefferis, S A. N1 - Cited By :1 Export Date: 16
Rheological Properties of PHPA Polymer Support Fluids
Rheological Properties of PHPA Polymer Support Fluids Carlos Lam1; Peter J. Martin2; and Stephan A. Jefferis3 Abstract: Synthetic polymer fluids are becoming a popular replacement for bentonite slurries to support excavations for deep foundation elements.
Synthetic polymer fluids are becoming a popular replacement for bentonite slurries to support excavations for deep foundation elements. However, the rheological properties of the polymer fluids used in excavation support have not been studied in detail, and there is currently confusion about the choice of mathematical models for this type of fluid.
Rheological Properties of PHPA Polymer Support Fluids
Rheological Properties of PHPA Polymer Support Fluids Article in Journal of Materials in Civil Engineering 27(11):04015021 · October 2015 with 4,783 Reads How we measure 'reads'
Rheological properties of PHPA polymer support fluids . By Carlos Lam, P J Martin and S A Jefferis Rheological property, Viscoelastic properties,
Observations on Viscosity Reduction of PHPA Polymer
However, the rheological properties of the polymer fluids used in excavation support have not been studied in detail, and there is currently confusion about the choice of mathematical models for
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The Polish Petroleum and Natural Gas Market - Instytut Nafty i Gazu
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Geotechnical tests at the laboratory The physical and mechanical properties of the ground used for a microtunnel project are listed in Table 4.1; they are measured by geotechnical tests carried out in specialized laboratories, or by in situ tests, as indicated in Table 4.4.
- What type of polyacrylamide is used in oil industry?
- The polyacrylamide use can be anionic, cationic, or nonionic with various ratios of the comonomers used in the case of the anionic and cationic polymers. The anionic polyacrylamides in the oil field industry are designated by the generic name of partially hydrolyzed polyacrylamide (PHPA), although they are in actuality copolymers .
- What is partially hydrolyzed polyacrylamide (PHPA)?
- Partially hydrolyzed polyacrylamide (PHPA) is the most frequently used polymer in this respect, owing to its low cost, viscosifying nature, and well-known physiochemical properties (Urbissinova et al. 2010 ). The molecule of this polymer is a flexible chain which remains in coil-like structure in the absence of a shearing effect.
- Which comonomer is used for the production of anionic polyacrylamides?
- The workhorse comonomer for the production of anionic polyacrylamides is acrylate salts of acrylic acid. These anionic polymers can be prepared as various mono- and divalent metal salts and other positively charged inorganic and organic counterions of the polymerization of acrylic acid with acrylamide (see Fig. 34.4 ).
- What is an anionic polyacrylamide?
- Anionic polyacrylamides make up the largest portion of the polyacrylamide market. The polymers can be prepared over a wide range of anionic charges and molecular weights (1000 to > 20,000,000 molecular weight). The workhorse comonomer for the production of anionic polyacrylamides is acrylate salts of acrylic acid.
