Hydrophobic associated copolymer as a wide temperature range synthetic cement retarder and its effect on cement hydration

Abstract

Hexadecyldimethylpropylmethacrylamide ammonium bromide was well prepared, allowed to copolymerize with other functional monomers to develop a hydrophobic associated polymer (PIADH) as a wide temperature range cement retarder. The synthetic copolymer was testified by Fourier transform infrared spectroscopy, 1 H-nuclear magnetic resonance, thermo gravimetric analysis, and differential scanning calorimetry. Its temperature induced adaptability was verified via fluorescence probe and NaOH titration techniques, indicating that the retarding groups were increasing at elevated temperature. The applied performance of PIADH modified cement slurries was also evaluated. The results manifested that PIADH not only had excellent retarding property, but also was insensitive to its concentration and temperature variations. Meanwhile, it exhibited less impact on the compressive strength of set cement in large temperature difference. Besides, the inclusion of PIADH improved the microstructure of hardened cement, which was conducive to its mechanical property. The effect of PIADH on cement hydration was also investigated by the isothermal heat flow calorimetry and X-ray diffraction, showing that the retardation of PIADH was achieved through prolonging the induction period and inhibiting the nucleation of portlandite and ettringite crystals.

Thermoviscosifying Smart Polymers for Oil and Gas Production: State of the Art

“… Schematic diagram of the anticipated polymer retarder included in cement slurry under different temperatures . Copyright (2017) Wiley.…”

“…Schematic diagram of the anticipated polymer retarder included in cement slurry under different temperatures. [85] Copyright (2017) Wiley. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57…”

“…The same team recently prepared a pentapolymer with AMPS, AA, itaconic acid, hexadecyldimethylpropylmethacrylamide ammonium bromide, and the thermal‐sensitive comonomer, N,N‐dimethyl acrylamide. They notified that this complicated copolymer not only had excellent retarding performance over a wide range of temperatures, but also was insensitive to the concentration and temperature variations.…”

Hydrophobic‐associated polymer‐based laponite nanolayered silicate composite as filtrate reducer for water‐based drilling fluid at high temperature

“…Previous research studies have shown that the hydrophobic‐associated polymers (HAPs) possess excellent temperature resistance ability, salt resistance ability, and antipollution capacity . However, most of HAPs were applied to improve oil recovery in the petroleum industry . Due to a small amount of hydrophobic groups was grafted at hydrophilic polymer chains, the HAPs possess good solubility and thickening effect .…”

Synthesis and retarder mechanism study of a novel amphoteric composite high temperature-resistant retarder for oil well cement

“…This negatively charged layer not only inhibits the hydration process of cement attributed to the shielding effect of polymer layer, but also is favorable to the dispersion of cement particles because of electrostatic repulsion between the cement particles. [18][19][20] The heterogeneous charge distribution on the surface of hydrating cement particles should be responsible for the adsorption behaviors between the cement particles and the retarders.…”