Synthesis and assessment of a hydrophobically associating heteropolymer in water-based mud

Nagre, R. D.; Owusu, Prince Appiah; Tchameni, Alain Pierre; Kyei, Sampson Kofi; Azanu, David

doi:10.1007/s11696-020-01379-9

Cited by 11 publications

(5 citation statements)

References 27 publications

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“…The strong absorption peak at 1654 cm −1 corresponded to the -C=O stretching vibrations of amide groups [49,50], while the characteristic absorption peaks at 1237 cm −1 were assigned to C-N stretching vibrations [51]. At 1390 cm −1 , a characteristic absorption peak of -COO − associated with carboxyl in the AA unit was observed [52]. Moreover, the rigid five-membered ring of the NVP unit exhibited characteristic absorption peaks at 1450 cm −1 [50].…”

Section: Ft-ir Analysis Of Saanmmentioning

confidence: 98%

Study of a novel cross linked graft copolymer starch in water-based drilling fluid

You

Hou

et al. 2023

Mater. Res. Express

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In the drilling industry, the demand for environmentally friendly additives with high thermal stability is increasing due to the dual factors of increasing environmental pressure and high-temperature oil layers. However, commonly used non-toxic and biodegradable additives, such as etherified modified starch, cannot withstand temperatures higher than 150 °C. Additionally, natural polymers with better thermal stability obtained through graft modification with sulfonated monomers face challenges in meeting the standards of toxicity and biodegradability. To address these technical problems, a novel graft and crosslink copolymer, St-AA/AM/NVP/MBA (SAANM), was synthesized from corn starch by combining graft modification with a non-sulfonated monomer and cross-linking modification. Laboratory evaluation results confirm that the thermal stability of SAANM in a nitrogen atmosphere was close to 300 ℃, and it exhibits excellent temperature resistance up to 170 °C in bentonite-based mud, while also retaining the non-toxic and biodegradable characteristics of starch. The water-based drilling fluid (WBDF), added with SAANM, demonstrated outstanding rheological properties, fluid loss control performance, and environmental friendliness after aging at 170 °C and being polluted by high concentrations of NaCl or CaCl2. The successful application of SAANM in a high-temperature directional well in an offshore oil field confirms its potential for borehole cleaning and wellbore stability.

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Section: Ft-ir Analysis Of Saanmmentioning

confidence: 98%

Study of a novel cross linked graft copolymer starch in water-based drilling fluid

You

Hou

et al. 2023

Mater. Res. Express

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“…Long et al 22 prepared a natural mixture of carboxymethyl cellulose and carboxymethyl starch (CMCS) by alkalization and etherification, which has good filtration performance at 120 C. Synthetic polymers can adjust their temperature and salt tolerance through the selection of groups. Amides and carboxyl groups have strong adsorption properties, and the particle size is stable by hydrogen bond adsorption, such as acrylamide (AM), 23 Acrylic acid (AA), 24 and so forth. The sulfonic group has good salt resistance, and the heterogeneous ring and benzene ring have good temperature resistance, 25,26 such as 2-acrylamide-2-methylpropyl sulfonic acid (AMPS), 24,27 N-vinylpyrrolidone (NVP), 28 sodium p-styrene sulfonate (SSS), 14 the temperature and salt resistance of the polymer can be improved by polymerizing with monomers with these functional groups.…”

Section: Introductionmentioning

confidence: 99%

“…Amides and carboxyl groups have strong adsorption properties, and the particle size is stable by hydrogen bond adsorption, such as acrylamide (AM), 23 Acrylic acid (AA), 24 and so forth. The sulfonic group has good salt resistance, and the heterogeneous ring and benzene ring have good temperature resistance, 25,26 such as 2-acrylamide-2-methylpropyl sulfonic acid (AMPS), 24,27 N-vinylpyrrolidone (NVP), 28 sodium p-styrene sulfonate (SSS), 14 the temperature and salt resistance of the polymer can be improved by polymerizing with monomers with these functional groups. At present, the commonly used method is to use acrylamide-based polymers as the main monomer and introduce monomers with high-temperature and salt-resistant groups.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel zwitterionic polymers and their properties as filtrate reducer for water‐based drilling fluid

Bai,

Wu,

Zhang

et al. 2023

J of Applied Polymer Sci

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The development of high‐temperature and salt‐resistant filtrate reducer is of great significance to the exploitation of deep and ultra‐deep wells. In this study, Zwitterionic copolymer PANDS was synthesized by free radical polymerization using acrylamide (AM), N‐vinylpyrrolidone (NVP), methacryloxyethyl trimethyl ammonium chloride (DMC) and sodium p‐styrene sulfonate (SSS) as monomers. Through orthogonal test, the optimum synthesis conditions were determined as follows: n (AM): n (NVP): n (SSS): n (DMC) = 3.5:2:0.5:0.5, the reaction temperature is 50°C, the initiator concentration is 0.4 wt%. The structure and thermal stability of the copolymers were analyzed by Fourier transform infrared spectroscopy (FT‐IR), nuclear magnetic resonance spectroscopy (1H‐NMR) and thermogravimetry (TG). In addition, the filtration reduction performance of PANDS was evaluated according to the American Petroleum Institute (API) standard. The mechanism of reducing filtration loss was studied by laser particle size analysis, Zeta potential and scanning electron microscope analysis of mud cake. The results show that PANDS has good temperature resistance and good filtrate loss reduction. With the addition of 1.5%PANDS, the filtrate loss of drilling fluid is 8.7 mL after aging at 160°C for 16 h, and can resist 6 wt% NaCl and 1 wt% CaCl2.

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“…At present, oil and natural gas are still one of the most important energy sources in the world [ 1 , 2 , 3 ]. With the continuous development of petroleum resources, shallow resources are gradually depleted, and deep ultra-deep oil and gas has become a key development object [ 4 , 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Amphoteric Ion-Modified, Styrene-Based Nano-Microsphere and Its Application in Drilling Fluid

Zhang,

Liu,

Sun

et al. 2023

Materials

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With the gradual depletion of shallow oil and gas, deep oil and gas has become the focus of development. However, deep formations generally face the challenge of high-temperature and high-salinity, and drilling fluid agents are prone to failure, leading to drilling fluid intrusion into the formation that can cause serious drilling accidents such as well bore collapse. For this, a styrene-based nano-microsphere (SSD) modified with amphoteric ions was developed, with a particle size of 228 nm which could resist temperatures up to 200 °C and sodium chloride (NaCl) up to saturation. SSD has significant salt-responsive properties and its aqueous dispersion becomes transparent with increasing salinity. The SSD provided superior plugging performance in solutions containing NaCl, with a core plugging efficiency of 95.2%, and it was significantly better than the anion-modified microspheres. In addition, in drilling fluids under high temperature and high-salinity conditions, the SSD promotes particle gradation of drilling fluids and improves the zeta potential through its own plugging and synergistic effect with clay, which significantly improves the comprehensive performance of drilling fluids, such as stability, rheological performance, and filtration reduction performance. The development of SSD provides a new idea for research of high-temperature and high-salinity-resistant drilling fluid agents.

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Synthesis and assessment of a hydrophobically associating heteropolymer in water-based mud

Cited by 11 publications

References 27 publications

Study of a novel cross linked graft copolymer starch in water-based drilling fluid

Study of a novel cross linked graft copolymer starch in water-based drilling fluid

Synthesis of novel zwitterionic polymers and their properties as filtrate reducer for water‐based drilling fluid

A Novel Amphoteric Ion-Modified, Styrene-Based Nano-Microsphere and Its Application in Drilling Fluid

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