Preparation and Swelling Inhibition of Mixed Metal Hydroxide to Bentonite Clay

Zhang, Bowen; Wang, Qingchen; Yan, Wei; Wei, Wei; Du, Weichao; Zhang, Jie; Chen, Gang; Slaný, Michal

doi:10.3390/min12040459

Cited by 15 publications

(7 citation statements)

References 26 publications

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“…The inhibitor has a certain microscopic effect on the particle size of bentonite. The in uence of synthetic products on the particle size of bentonite particles was analyzed by laser particle size analysis of untreated bentonite particles and bentonite particles treated with different solutions [23]. Table 11 and Fig.…”

Section: Particle Distributionmentioning

confidence: 99%

Preparation and application of a new polyhydroxy ammonium shale hydration inhibitor

Wang

Jun

Chen

et al. 2023

Preprint

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In this paper was study the wellbore instability caused by hydration of shale formation during drilling is a major problem in drilling engineering. A polyhydroxy-alkanolamine was synthesized, and the shale inhibition performance was evaluated by anti-swelling test, linear swelling test, wash-durable test and bentonite hydration and dispersion experiment. The shale inhibition mechanism of polyhydroxy-alkanolamine was studied by Fourier transform infrared spectroscopy (FTIR), particle size distribution, Zeta potential, Thermal analysis and Scanning electron microscopy (SEM). The main results show that the use of polyhydroxy-alkanolamine (EGP-2) can result in a relatively lower linear swelling rate of bentonite, and the linear swelling rate of 0.3% EGP-2 was 26.98%, which is stronger compared with 4% KCl. The anti-swelling rate of 0.3% EGP-2 was 43.54%, the shrinkage swelling rate of 0.3% EGP-2 was 34.62%. Results show that EGP-2 may permeate and adsorb on the bentonite surface. The rolling recovery rate of easily hydrated shale was high as 79.36%, which greatly reduces the dispersion ability of water to easily hydrated shale. The results of this study can be used to maintain the stability of the wellbore, which is conducive to related research.

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Section: Particle Distributionmentioning

confidence: 99%

Preparation and application of a new polyhydroxy ammonium shale hydration inhibitor

Wang

Jun

Chen

et al. 2023

Preprint

Self Cite

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“…In extreme cases, high viscosity can even result in bit balling, which can cause well leakage, blowouts, and well collapse. [2][3][4][5][6] To ensure proper performance, it is essential to carefully select viscosity enhancers for drilling fluids to control viscosity.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, if the viscosity is too high, the flow resistance becomes too high and the return velocity in the annulus is too low, hindering hole cleaning and cutting speed. In extreme cases, high viscosity can even result in bit balling, which can cause well leakage, blowouts, and well collapse 2–6 . To ensure proper performance, it is essential to carefully select viscosity enhancers for drilling fluids to control viscosity.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performances of a cationic modified polyacrylamide viscosity enhancer for water‐based drilling fluids

Zhang

Wang

Sun

et al. 2023

J of Applied Polymer Sci

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Polyacrylamide and its derivatives are commonly used as viscosity enhancers in water‐based drilling fluids, but they have limitations in terms of salt resistance and temperature resistance. In this study, a novel cationic functional monomer, 4‐allylaminocarbonyl‐1‐dodecylpyridinium bromide, was introduced into the molecular chains of an acrylamide and acrylic acid copolymer in order to improve its temperature resistance and salt tolerance. Results showed that the apparent viscosity of a 2000 mg/L copolymer solution was 440.4 mPa s at a shear rate of 7.34 s−1, decreasing to 23.5 mPa s at 510 s−1 before recovering to 49.2 mPa s when the shear rate returned to 170 s−1. After 16 h of aging at 120°C, a brine drilling fluid containing 1% of the copolymer showed an apparent viscosity retention rate of 70%, likely due to the formation of a stable net structure between the copolymer's molecular chains and clay particles. These results suggest that the copolymer could be an excellent candidate for use as a viscosity enhancer in drilling fluids.

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“…Bentonite is a natural clay formed primarily of the montmorillonite family, consisting of two silica tetrahedral lamellae and one alumina octahedron lamellae [ 6 , 7 ]. It is frequently utilized in environment-related materials due to its excellent swelling properties and low permeability [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Preparation of Polymer-Modified Bentonite and Sand Mixtures Based on Osmotic Pressure Principle

Zhang

et al. 2022

Materials

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Polymer-modified bentonite and sand mixtures (PMBS) are widely used in the engineering field due to their low cost and low permeability. In this study, different ionic types of polyacrylamides were used to modify bentonite to improve its swelling properties and impermeability. The physicochemical properties of polymer-modified bentonite were characterized by X-ray diffraction, particle size distribution, IR spectroscopy, SEM, and free swell index (FSI) to further demonstrate the successful organic modification of bentonite. To investigate the impermeability mechanism of PMBS from the perspective of osmotic pressure, the colloidal osmotic pressure of bentonite and hydraulic conductivity were compared. The results showed that anionic polyacrylamide (APAM) had the most obvious improvement on the swelling properties of bentonite, and 3% APAM increased the FSI of bentonite from 15 mL/2 g to 41 mL/2 g. With the increase in polymer dosage, the colloidal osmotic pressure of bentonite increased and the hydraulic conductivity of PMBS decreased significantly. The interior of PMBS is equivalent to a highly concentrated bentonite–sand–water system. When the colloidal osmotic pressure in the restricted space is higher than the external hydraulic pressure, it will prevent infiltration from occurring. When the external hydraulic pressure exceeds the high concentration of bentonite colloid osmotic pressure, the hydraulic conductivity may increase rapidly. Therefore, the impermeability of PMBS depends on the colloidal osmotic pressure of bentonite. Finally, it was confirmed that PMBS had a self-healing capacity by simulating damage to PMBS.

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Preparation and Swelling Inhibition of Mixed Metal Hydroxide to Bentonite Clay

Cited by 15 publications

References 26 publications

Preparation and application of a new polyhydroxy ammonium shale hydration inhibitor

Preparation and application of a new polyhydroxy ammonium shale hydration inhibitor

Preparation and performances of a cationic modified polyacrylamide viscosity enhancer for water‐based drilling fluids

Study on Preparation of Polymer-Modified Bentonite and Sand Mixtures Based on Osmotic Pressure Principle

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