Synthesis, characterization and properties of an anionic polymer for water-based drilling fluid as an anti-high temperature and anti-salt contamination fluid loss control additive

Mao, Hui; Wang, Weiji; Ma, Yongle; Huang, Yan

doi:10.1007/s00289-020-03227-y

Cited by 23 publications

(11 citation statements)

References 39 publications

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“…As can be seen from Figure 4 , the filtration loss of BT-DF x (FL API from 28.9 to 3.8 mL, FL HTHP from 128.6 to 24.8 mL, respectively) decreased sharply as AADN increased to 2 wt% in BT-DF. Because the polymer AADN contains spatial ring structures such as DMDAAC [ 34 ] and NVCL [ 35 ], the thermal stability of AADN was improved. At high temperatures, the polymer is fully adsorbed on the surface of BT particles, and the sulfonic groups on the polymer AADN chain endow AADN with strong high-temperature dispersion ability [ 36 ].…”

Section: Resultsmentioning

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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Section: Resultsmentioning

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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“…15,16 In order to improve the performance of drilling fluids under high temperature and high salinity, a number of filtrate reducers have been developed, mainly modified natural products and synthetic polymer filtrate reducers. [17][18][19] Guo and Peng 20 synthesized a starch-graft-polyacrylamide copolymer by corn starch and acrylamide in aqueous solution. The copolymer was also beneficial to reduce the filtration loss of water-based drilling fluid at 147 C and saturated salinity.…”

Section: Introductionmentioning

confidence: 99%

“…Filtrate reducer is the most widely used additive in water‐based drilling fluids, which is used to reduce the filtration loss of the drilling fluid system, stabilize the well wall and maintain the rheology of the drilling fluid system 15,16 . In order to improve the performance of drilling fluids under high temperature and high salinity, a number of filtrate reducers have been developed, mainly modified natural products and synthetic polymer filtrate reducers 17–19 . Guo and Peng 20 synthesized a starch‐graft‐polyacrylamide copolymer by corn starch and acrylamide in aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a network‐structured polymer with low viscosity effect and its use as filtrate reducer for water‐based drilling fluids

Lin,

Li,

Liu

et al. 2023

J of Applied Polymer Sci

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With the development of deep formations, high temperature and high salinity seriously affect the rheology and filtration performance of water‐based drilling fluids. Therefore, in this study, a network‐structured polymer (DSD‐β‐CD) with low viscosity effect was synthesized using β‐cyclodextrin (β‐CD) as the backbone and N,N‐dimethylacrylamide (DMAA), sodium p‐styrene sulfonate (SSS), and dimethyl diallyl ammonium chloride (DMDAAC) as monomers. The polymer was analyzed by transmission electron microscope, Fourier transform infrared spectrum, nuclear magnetic resonance, and thermogravimetric analysis. The filtrate reducer in this study showed excellent temperature and salt resistance, the filtration loss of the water‐based drilling fluid containing 3.5% DSD‐β‐CD and 18% NaCl was 5.1 mL after hot rolling at 220°C for 16 h. Additionally, its viscosity was 0.2 mPa s higher than that of the water‐based drilling fluid with 18% NaCl, showing an excellent low viscosity effect. The filtration loss reduction mechanism of DSD‐β‐CD was investigated by viscosity analysis, mud cake analysis, particle size distribution, hydration swelling of bentonite, and Zeta potential. The results showed that DSD‐β‐CD could be adsorbed on the surface of bentonite particles through hydrogen bonds and ionic bonds, which increased the dispersion of bentonite particle and the compactness of the mud cake, thus reducing the filtration loss.

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“…Therefore, rheology enhancers that can tolerate high temperature and high salinity are essential for deep oil and gas development. Existing rheology enhancers for water-based drilling fluids are typically high-molecular weight polymers [6][7][8], which improve rheological performance by enhancing the reticulation in the drilling fluid [9][10][11][12]. However, the existing additives of drilling fluids have serious viscosity reduction under high temperature and high salinity conditions, resulting in an inability with deep formation drilling [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Development and evaluation of a high temperature and high salinity resistant rheological enhancer for water-based drilling fluids

Zhang

Sun²,

Wang³

et al. 2022

J. Phys.: Conf. Ser.

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A rheology enhancer MMA for water-based drilling fluids was developed using acrylamide (AM), sodium p-styrenesulfonate (SSS), maleic anhydride (MA) and lauryl methacrylate (LMA). MMA has hydrophobic side chains that can form hydrophobic association structures in the drilling fluid, thus giving the drilling fluid the properties of NaCl-promoted viscosity enhancement. When the drilling fluid with 2% MAA was hot-rolling at 200°C and 30% NaCl for 16h, its apparent viscosity and yield point were 29.0 mPa·s and 12.0 Pa, respectively. Meanwhile, its rheological enhancement and viscosity retention properties were better than those of common oilfield products such as CMC, PAC and Driscal D at the same addition.

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Synthesis, characterization and properties of an anionic polymer for water-based drilling fluid as an anti-high temperature and anti-salt contamination fluid loss control additive

Cited by 23 publications

References 39 publications

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

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

Synthesis of a network‐structured polymer with low viscosity effect and its use as filtrate reducer for water‐based drilling fluids

Development and evaluation of a high temperature and high salinity resistant rheological enhancer for water-based drilling fluids

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