Laponite-polymer composite as a rheology modifier and filtration loss reducer for water-based drilling fluids at high temperature

Yang, Jie; Sun, Jinsheng; Ren, Wei; Liu, Fan; Wang, Jintang; Qu, Yuanzhi; Wang, Pingquan; Huang, Hongjun; Liu, Luman; Zhao, Zhentang

doi:10.1016/j.colsurfa.2022.130261

Cited by 33 publications

(22 citation statements)

References 45 publications

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“…C–N stretching was observed at approximately 1458.70 cm −1 in DMAA, DMDAAC, and NVP. It has been determined that SO 3 from AMPS has a stretching vibration at 1212.00 cm −1 [ 39 ]. The absorption peak at 1156.59 cm −1 is attributed to TPEG.…”

Section: Resultsmentioning

confidence: 99%

New Zwitterionic Polymer as a Highly Effective Salt- and Calcium-Resistant Fluid Loss Reducer in Water-Based Drilling Fluids

Liu

Sun

Ren

et al. 2022

Gels

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To control the filtration loss of drilling fluids in salt–gypsum formations, a novel type of zwitterionic polymer gel (DNDAP) was synthesized by free radical polymerization, which was used as a salt- and calcium-resistant fluid loss reducer for water-based drilling fluids (WBDF). DNDAP was prepared with N, N-dimethylacrylamide (DMAA), N-vinylpyrrolidone (NVP), Diallyl dimethyl ammonium chloride (DMDAAC), 2-acrylamide-2-methylpropaneonic acid (AMPS), and isopentenol polyether (TPEG) as raw materials. Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H-NMR) were used to characterize the composition and structure of the DNDAP copolymer. The thermal stability of DNDAP was evaluated by the use of thermogravimetric analysis (TGA). WBDF with DNDAP was analyzed for zeta potential and particle size and the corresponding filter cake underwent energy dispersive spectrum (EDS) analysis and scanning electron microscope (SEM) analysis. The results showed that the thermal decomposition of DNDAP mainly occurred above 303 °C. DNDAP exhibits excellent rheological and filtration properties in water-based drilling fluids, even under high-temperature aging (up to 200 °C) and high salinity (20 wt% NaCl or 5 wt% CaCl2) environments. The strong adsorption effect of DNDAP makes the particle size of bentonite reasonably distributed to form a dense mud cake that reduces filtration losses.

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Section: Resultsmentioning

confidence: 99%

New Zwitterionic Polymer as a Highly Effective Salt- and Calcium-Resistant Fluid Loss Reducer in Water-Based Drilling Fluids

Liu

Sun

Ren

et al. 2022

Gels

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“…The zeta potential is often used to characterize the stability of drilling fluids. When the absolute value of the zeta potential is greater than 30 mV, drilling fluids are relatively stable [ 28 , 29 ]. As shown in Figure 11 , the zeta potential of the pure sediment system is −25.1 mV, indicating inferior electrostatic repulsion and stability and high odds of settling.…”

Section: Resultsmentioning

confidence: 99%

Kinetic Hydrate Inhibition of Natural Gels in Complex Sediment Environments

Wang

Sun

Bian

et al. 2022

Gels

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Natural gels are emerging as a hotspot of global research for their greenness, environmental-friendliness, and good hydrate inhibition performance. However, previous studies mostly performed experiments for simple pure water systems and the inhibition mechanism in the sediment environment remains unclear. Given this, the inhibition performance of xanthan gum and pectin on hydrate nucleation and growth in sediment environments was evaluated via hydrate formation inhibition tests, and the inhibition internal mechanisms were revealed via a comprehensive analysis integrating various methods. Furthermore, the influences of natural gels on sediment dispersion stability and low-temperature fluid rheology were investigated. Research showed that the sediments of gas hydrate reservoirs in the South China Sea are mainly composed of micro-nano quartz and clay minerals. Xanthan gum and pectin can effectively inhibit the hydrate formation via the joint effects of the binding, disturbing, and interlayer mass transfer suppression processes. Sediments promote hydrate nucleation and yet inhibit hydrate growth. The interaction of sediments with active groups of natural gels weakens the abilities of gels to inhibit hydrate nucleation and reduce hydrate formation. Nonetheless, sediments help gels to slow down hydrate formation. Our comprehensive analysis pointed out that pectin with a concentration of 0.5 wt% can effectively inhibit the hydrate nucleation and growth while improving the dispersion stability and low-temperature rheology of sediment-containing fluids.

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“…In this stage, the mass decreased slowly with the increase of temperature, mainly because the polymer AADN contains a large number of strong polar hydrophilic groups, such as amide groups and sulfonic groups, which make the polymer adsorb free water in the air. As the temperature rose, free water and volatile substances gradually volatilized, resulting in some mass loss [ 14 ]. Stage II is from 309.1 °C to 347.1 °C.…”

Section: Resultsmentioning

confidence: 99%

“…Deep and ultra-deep high temperatures, high pressure, and complex geological conditions (mostly salt-gypsum layer) seriously limit the performance of drilling fluids. Drilling fluid additives are easily degraded, cross-linked, desorbeded, and undergo conformational change under high-temperature and high-salt, resulting in a rheological disorder of the drilling fluid, loss of filtration control, and deterioration of settlement stability [ 11 , 12 , 13 , 14 ], thus affecting drilling operations.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Filtration Control of Zwitterionic Polymer AADN in High Temperature High Pressure Water-Based Drilling Fluids

Ren

Yang

Liu

et al. 2022

Gels

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With the exploration and development of high-temperature and high-salt deep oil and gas, more rigorous requirements are warranted for the performance of water-based drilling fluids (WBDFs). In this study, acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, diallyl dimethyl ammonium chloride, and N-vinylpyrrolidone were synthesized by free radical copolymerization in an aqueous solution to form a temperature and salt-resistant zwitterionic polymer gel filtration loss reducer (AADN). The zwitterionic polymer had excellent adsorption and hydration groups, which could effectively combine with bentonite through hydrogen bonds and electrostatic attraction, strengthening the hydration film thickness on the surface of bentonite, and promoting the stable dispersion of drilling fluid. In addition, the reverse polyelectrolyte effect of zwitterionic polymers strengthened the drilling fluid’s ability to resist high-temperature and high-salt. The AADN-based drilling fluid showed excellent rheological and filtration control properties (FLAPI < 8 mL, FLHTHP < 29.6 mL) even after aging at high-temperature (200 °C) and high-salt (20 wt% NaCl) conditions. This study provides a new strategy for simultaneously improving the high-temperature and high-salt tolerance of WBDFs, presenting the potential for application in drilling in high-temperature and high-salt deep formations.

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Laponite-polymer composite as a rheology modifier and filtration loss reducer for water-based drilling fluids at high temperature

Cited by 33 publications

References 45 publications

New Zwitterionic Polymer as a Highly Effective Salt- and Calcium-Resistant Fluid Loss Reducer in Water-Based Drilling Fluids

New Zwitterionic Polymer as a Highly Effective Salt- and Calcium-Resistant Fluid Loss Reducer in Water-Based Drilling Fluids

Kinetic Hydrate Inhibition of Natural Gels in Complex Sediment Environments

Investigation on Filtration Control of Zwitterionic Polymer AADN in High Temperature High Pressure Water-Based Drilling Fluids

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