Investigation of a hydrophobically associating polymer’s temperature and salt resistance for fracturing fluid thickener

Mao, Jincheng; Xue, Ju-Kui; Zhang, Heng; Yang, Xiaojiang; Lin, Chong; Wang, Quanhang; Li, Chao; Liao, Zhengjie

doi:10.1007/s00396-022-04965-3

Cited by 23 publications

(14 citation statements)

References 20 publications

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“…When the temperature was higher than 50 °C, the viscosity of composite system increased by 60 % relative to the viscosity of P(AM‐DPMOH 2 ) solution. Since the boronic ester bonds have the thermal stability, they are less affected by temperature and have better stability under high temperature condition [20–23] . For the composite system, both the intermolecular entanglement and network structure were strengthened by the boronic ester bond.…”

Section: Resultsmentioning

confidence: 99%

“…Since the boronic ester bonds have the thermal stability, they are less affected by temperature and have better stability under high temperature condition. [20][21][22][23] For the composite system, both the intermolecular entanglement and network structure were strengthened by the boronic ester bond. Therefore, composite system had better temperature resistance than that of P(AM-DPMOH 2 ).…”

Section: The Solution Properties Of Composite Systeminfluence Of Temp...mentioning

confidence: 99%

“…In addition, because the Ca 2 + had a negative effect on the hydrogen bonding interaction between P(AM-DPMOH 2 ) and water, CaCl 2 had a larger effect than that of NaCl. However, due to the formation of boronic ester bonds in the composite system, the viscosity of composite system was generally higher than the that of P(AM-DPMOH 2 ) solution, and the viscosity increase was about 50 %, which indicated that the salt in the solution have little effect on the boronic ester bond stability and the composite system have a certain resistance to salt.. [20,[22][23][24]…”

Section: Influence Of Nacl Concentrationmentioning

confidence: 99%

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Preparation of Copolymer of Dihydroxy Monomer and Acrylamide and Its Solution Properties with Polyphenylboronic Acid Compounds

et al. 2022

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The construction of composite flooding system based on dynamic covalent bonds is one of the effective methods to improve the salt and temperature resistance of polymer flooding agents. The polymers used in most composite systems are xanthan gum and guar gum. In this paper, a novel multihydroxyl polymer was synthesized, and a new composite system was constructed based on the dynamic boronic ester bonds. Firstly, the multi-hydroxyl polymer P(AM-DPMOH 2 ) was prepared by aqueous solution copolymerization of acrylamide (AM) and a dihydroxy monomer 2,3-dihydroxy-N-(3-methacrylamidopropyl)-N,N-dimethylpropan-1-aminium (DPMOH 2 ), which was obtained by quaternization reaction between 3-chloro-1,2propanediol and N-(3-dimethylaminopropyl). Then, the composite system was prepared by the P(AM-DPMOH 2 ) solution and polyboronic acid compound (BPEI). The effects of DPMOH 2 content in P(AM-DPMOH 2 ), molecular weight of P(AM-DPMOH 2 ), molecular weight of BPEI, phenylboronic acid groups content in BPEI and pH on the formation of thickening composite system were investigated. The results showed that when the content of DPMOH 2 in P(AM-DPMOH 2 ) exceeded 40 wt%, viscosity average molecular weight of P(AM-DPMOH 2 ) was higher than 5.0 × 10 5 g/mol, the molecular weight of PEI in BPEI was larger than 3000 g/mol, the content of phenylboronic acid groups in BPEI was more than 39.3 %, and pH was in the range of 8-9, the thickening composite system can be formed by P(AM-DPMOH 2 ) and BPEI. In addition, both the temperature and salt resistance of the composite system formed by 3000 mg/L P(AM-DPMOH 2 ) and 2000 mg/L BPEI was much better than that of 3000 mg/L P(AM-DPMOH 2 ). The results of this paper provide a new finding of how to construct a composite flooding system with dynamic covalent bonds.

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Section: Resultsmentioning

confidence: 99%

Section: The Solution Properties Of Composite Systeminfluence Of Temp...mentioning

confidence: 99%

Section: Influence Of Nacl Concentrationmentioning

confidence: 99%

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Preparation of Copolymer of Dihydroxy Monomer and Acrylamide and Its Solution Properties with Polyphenylboronic Acid Compounds

et al. 2022

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“…It is found that the introduction of hydrolysis groups makes the polymer transform into polyelectrolyte, which is helpful to the extension of the molecular chain, and at the same time, it avoids a large amount of adsorption on the surface in the formation pores. The rheological properties of HPAM are greatly affected by the formation environment, so other synthetic polymers have also been applied to enhance oil recovery, including branched poly (propylene amide) [ 50 ], N, N-dimethylacrylamide copolymer [ 51 ], and HPAM derivatives with temperature and salt-resistant monomers (such as AMPS and NVP) [ 52 , 53 , 54 ]. No matter whether HPAM or other synthetic polymers, the polymer molecular chain has the characteristics of flexibility, easy change of molecular conformation, and extremely easy to bend and entangle.…”

Section: Why Choosing Supramolecular Polymer As the New Materials For...mentioning

confidence: 99%

Can Supramolecular Polymers Become Another Material Choice for Polymer Flooding to Enhance Oil Recovery?

et al. 2022

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High molecular polymers have been widely studied and applied in the field of enhanced oil recovery (EOR). At present, the focus of research has been changed to the design of polymer networks with unique properties such as anti-temperature and anti-salinity, good injection and so on. Supramolecular polymers have high viscoelasticity as well as excellent temperature, salt resistance and injection properties. Can supramolecular polymers become another material choice for polymer flooding to enhance oil recovery? The present review aims to systematically introduce supramolecular polymers, including its design strategy, interactions and rheological properties, and address three main concerns: (1) Why choose supramolecular polymers? (2) How do we synthesize and characterize supramolecular polymers in the field of oilfield chemistry? (3) What has been the application progress of supramolecular polymers in improving oil recovery? The introduction of a supramolecular interaction system provides a new idea for polymer flooding and opens up a new research direction to improve oil recovery. Aiming at the “reversible dynamic” supramolecular polymers, the supramolecular polymers are compared with the conventional covalent macromolecular polymer networks, and the challenges and future research directions of supramolecular polymers in EOR are discussed. Finally, the author’s viewpoints and perspectives in this emerging field are discussed.

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“…Mao et al 22 reported a quaternary hydrophobic associating thickener P (acrylamide/acrylic acid/2‐acrylamide‐2‐methylpropanesulfonic acid/hydrophobic monomer), and found that the dissolution times of thickener was shorten to 7 min, the thickener solution with temperature resistance of 120°C and salt resistance of 30 × 10 4 mg/L NaCl, and the calcium ions existed in the solution could prolong the dissolution time of the thickener 23 . The thickeners of references were powder polymer, which had the problems of slow dissolution in water, the fracturing fluid online continuous mixing could not be achieved in field construction 20–23 …”

Section: Introductionmentioning

confidence: 99%

Preparation and evaluation of acryloyl morpholine modified emulsion fracturing fluid thickener with high temperature resistance and salt resistance

Shi

Sun

et al. 2022

J of Applied Polymer Sci

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To prepare the thickener of fracturing fluid with temperature resistance, salt resistance and quick dissolution, an emulsion thickener (ASC) was synthesized by acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, and acryloyl morpholine. The dissolution, salt resistance and drag reduction of ASC, and the viscoelasticity, temperature resistance and shear resistance and gel breaking properties of fracturing fluid formed by ASC and zirconium crosslinker were investigated. The results showed that the sticky time of ASC was less than 60 s and the drag reduction rate was 72.5% in 100,000 mg/L brine, showing that ASC had thickening ability in high salinity brine and satisfied the requirements of continuous fluid preparation on the fracturing process.The viscosity of ASC fracturing fluid was 98 mPa s after shearing at 200 C and 170 s À1 for 150 min when the salinity was 100,000 mg/L. When the ammonium persulfate concentration was 400 mg/L, the viscosity of the broken fluid was 4.0 mPa s. The temperature resistance, salt resistance and shear resistance of ASC emulsion fracturing fluid could be significantly improved by the introduction of acryloyl morpholine, ASC fracturing fluid had the characteristics of high elasticity and low viscosity, which could meet the application requirements under ultra-high temperature reservoirs.

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Investigation of a hydrophobically associating polymer’s temperature and salt resistance for fracturing fluid thickener

Cited by 23 publications

References 20 publications

Preparation of Copolymer of Dihydroxy Monomer and Acrylamide and Its Solution Properties with Polyphenylboronic Acid Compounds

Preparation of Copolymer of Dihydroxy Monomer and Acrylamide and Its Solution Properties with Polyphenylboronic Acid Compounds

Can Supramolecular Polymers Become Another Material Choice for Polymer Flooding to Enhance Oil Recovery?

Preparation and evaluation of acryloyl morpholine modified emulsion fracturing fluid thickener with high temperature resistance and salt resistance

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