Geoenergy Science and Engineering
·
2024
·
IF 0
Yuhan Wu,Ming Duan,Qihai Wang,Bin Chen,Huaxin Chen,Xinliang Li,Shenwen Fang
Sand production in oil wells is a common challenge during the oil extraction process. Water-soluble polymers have attracted attention due to their low toxicity, cost-effectiveness, ease of direct injection, and excellent thermal stability. However, the dry polymer injection process commonly used in offshore oil fields is complex. Therefore, this paper employs acrylamide (AM), 2-acrylamide-2-methylpropane sulfonic acid (AMPS), a dihydroxy monomer (DOH), and a functional monomer (DAM) containing ketone groups and self-crosslinking properties as monomers. A polymer latex type sand control agent was prepared through dispersion polymerization for direct application on offshore platforms. This paper utilizes flocculation time and maximum sand free flow rate as inspection indicators and utilizes both the one-factor-at-a-time method and the surface response method to optimize the synthesis conditions of the sand control agent. The optimal synthesis conditions are obtained: total monomer concentration of 9.15 wt%, DOH concentration at 10 wt% of the total monomer concentration, ammonium sulfate (AS) concentration of 27.02 wt%, dispersant concentration of 2.13 wt%, initiator concentration at 0.25 wt% of the total monomer concentration, reaction time of 12 h, and reaction temperature of 40 °C. Under the conditions of concentration ≥2000 mg/L and curing time ≥4 h, the sand control agent is suitable for sand stabilization under formation conditions of temperatures between 50 and 80 °C, pH levels ranging from 3 to 9, salinity <30000 mg/L, and sand particle size of ≥100 μm. The research results of this paper can serve as a valuable reference for the control of oilfield sand production.
研究领域:
石油工程
·
高分子化学
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产品关联
DOI
Processes
·
2025
·Vol. 13
·期 3
·922
·
IF 2.8
Xu Chen,Xiangpeng Zhu,Cheng Gan,Yigang Li,Diren Liu
The stability of cement slurries under high-temperature conditions poses a significant engineering challenge in cementing operations. This study explored the development of a novel tetrameric thermosensitive thickening polymer (TTSTC) as a solution to this problem. Aqueous free radical polymerization was employed to synthesize the polymer. The base monomers 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and acrylamide (AM) were employed, in conjunction with the long-chain thermosensitive monomers octadecyldimethylallylammonium chloride (C18DMAAC) and N-vinylpyrrolidone (NVP). The optimal synthesis conditions were determined by orthogonal experiments as follows: monomer molar ratio (AM:AMPS:C18DMAAC:NVP) = 15:10:5:5, initiator concentration of 16 wt%, cross-linker concentration of 0.45 wt%, pH 6, and polymerization temperature of 60 °C. The chemical structure of TTSTC was characterized by Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance (1H-NMR), gel permeation chromatography, scanning electron microscopy, Zeta potential, and particle size measurement. The results verified the successful synthesis of the target polymer. Its thermal stability, thermosensitive thickening behavior, and salinity resistance were systematically investigated. Furthermore, the impact of TTSTC on the settling stability, rheological characteristics, and compressive strength of cement paste was assessed. The experimental findings demonstrated that TTSTC displayed noteworthy thermosensitive thickening properties at temperatures up to 279 °C, pH values ranging from 11 to 13, and NaCl/CaCl2concentrations between 0.05 and 0.5 g/L. The optimal performance of TTSTC was observed at mass fractions ranging from 0.6 to 0.8 wt%. When incorporated into the slurry at 0.6–1.0 wt%, TTSTC significantly improved the slurry settling stability, thickening properties, and 28d compressive strength at elevated temperatures compared with the control. When comparing the temperature-sensitive thickening performance of the newly developed treatment agent with that of the commercially available xanthan gum thickener, the results showed that for the cement slurry system containing the new treatment agent at a mass fraction of 0.6%, the reduction in consistency was 30.9% less than that of the cement slurry system with xanthan gum at a mass fraction of 0.6%. These findings indicate that TTSTC has the potential to function as a highly effective additive in cementing operations conducted in extreme environments, thereby enhancing the stability and dependability of such operations.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2016
·
IF 2.725
Luanluan Zhang,Hejun Gao,Yunwen Liao
A series of functional cross-linked polymer (Poly(AMPS- co -DVB)) were synthesized by 2-acrylamido-2-methylpropane sulfonic acid (AMPS) and divinylbenzene (DVB). The physicochemical properties of the Poly(AMPS- co -DVB) were characterized by FT-IR, TGA , SEM, XRD , Zeta potential and UV–Vis. Those results showed that the Poly(AMPS- co -DVB) could provide mounts of adsorption sites from its special structure. The effects of the initial pH, dosage, contact time, and temperature on the adsorption of Rhodamine B (RhB) onto the Poly(AMPS- co -DVB) were investigated. It was found that the initial pH was an important factor for the molecules form of RhB and the surface formation of Poly(AMPS- co -DVB). With increasing of molar ratio of AMPS/DVB, the adsorption efficiency increased gradually. In the adsorption process , both physical and chemical mechanism is presence to adsorb RhB. The maximum adsorption capacity could get 407.9 mg/g within 2 h at room temperature .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Petroleum Science
·
2022
·
IF 4.757
Tian-Ci Zhang,Ji-Jiang Ge,Hao Wu,Hong-Bin Guo,Bao-Lei Jiao,Zhen Qian
The BST oilfield in the northwestern Taklamakan Desert is a fractured carbonate reservoir, but issues of water breakthrough are becoming increasingly severe with the development of water flooding. Unfortunately, the high-temperature and high-salt conditions (130 °C, 71695 mg/L) of the BST oilfield pose challenges for the development of plugging agents. In this study, the effects of 2-acrylamido-2-methylpropane sulfonic acid (AMPS) content on AM/AMPS copolymers and gels were studied through viscosity measurements, nuclear magnetic resonance (NMR), and cryo-scanning electron microscope (Cryo-SEM). Moreover, the AMPS stabilization mechanism of the polymers and gels was explained. Heat-resistant and salt-tolerant gel systems were developed, and their gelation properties, thermal stability, injection capacity, and plugging ability were evaluated. Experimental results showed inconsistencies between the effects of AMPS content on the polymers and gels. For the polymers, the thermal stability increased with increased AMPS content in the polymer. However, excessive AMPS content resulted in poor gelation and low strength. The developed gel systems with S30 polymer (AMPS content is approximately 26%) exhibited excellent thermal stability, controllable gelation time, good injection capacity, and plugging ability. The field application results indicated that most production wells had a positive response, with reduced water-cut and increased daily oil production.
研究领域:
石油工程
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Huayong Luo,Kelin Wu,Qin Wang,Tian C. Zhang,Hanxing Lu,Hongwei Rong,Qian Fang
We explore the feasibility of utilizing electro-responsive hydrogels as novel forward osmosis (FO) draw agents for desalination. The chemically cross-linked hydrogels were synthesized via free radical copolymerization of common acrylamide (AM) with strong anionic comonomer 2-acrylamido-2-methyl- 1 -propanesulfonic acid (AMPS). The morphology, chemical structure , water-adsorbing capacity, and water state of the hydrogels were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), a swelling test, and differential scanning calorimetry (DSC). The water-swollen hydrogels exhibited electroresponsiveness as shrinking and expanding reversibly with the on-off switching of the electric field in an electrode contact system. The magnitude of hydrogels’ deswelling increased with the increase in the degree of swelling and applied voltages. This dehydration phenomenon was induced by the decrease in hydration power of microcounter ions due to the interaction with the electrodes by water electrolysis. The hydrogels were proved to be capable of generating a reasonable water flux of 2.76 L m −2 h −1 (LMH) from brackish water (2000 ppm NaCl solution) due to their high swelling pressure. In addition, the water flux was affected by the amount of hydrogel particles on the membrane surface. Importantly, the prepared hydrogels could effectively release around 71% of the adsorbed water at an applied voltage of 15 V for 40 min, and were able to maintain their water flux and water recovery performances up to three times regeneration. Results indicate that the electric field is an attractive alternative stimulus for extracting desirable water from the hydrogel draw agent in the FO desalination process.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Jingyuan Ma,Boru Xia,Peizhi Yu,Yuxiu An
Acrylamide polymers were widely used as oilfield chemical treatment agents because of their wide viscosity range and versatile functions. However, with the increased formation complexity, their shortcomings such as poor solubility and low resistance to temperature, salt, and calcium were gradually exposed. In this paper, acrylamide (AM)/2-acrylamide-2-methyl-1-propane sulfonic acid (AMPS) copolymers were synthesized by aqueous solution polymerization and inverse emulsion polymerization, respectively. The aqueous polymer (W-AM/AMPS) and the inverse emulsion polymer (E-AM/AMPS) were characterized by Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (1H NMR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and particle size analysis. The rheological properties, filtration properties, and sodium ion (Na+) and calcium ion (Ca2+) resistance were investigated. The results showed that E-AM/AMPS not only had a dissolution speed 4 times faster than that of W-AM/AMPS but also had superior shear-thinning performance both before and after aging. The filtration property of the bentonite system containing 2 wt % E-AM/AMPS was also better than that of the bentonite system containing 2 wt % W-AM/AMPS. In addition, E-AM/AMPS also exhibited extremely high tolerance for Na+ and Ca2+. The huge difference between rheological and filtration properties of E-AM/AMPS and W-AM/AMPS in drilling fluid can be attributed to the differences in the polymer microstructure caused by the two polymerization methods. Both FTIR and 1H NMR results showed that more hydrogen bonds were formed between E-AM/AMPS molecular groups and molecular chains, which led to a cross-linked network structure of E-AM/AMPS which was observed by TEM. It was this cross-linked network structure that made E-AM/AMPS have a high viscosity and allowed it to be better adsorbed on bentonite particles, thus exhibiting excellent rheological and filtration behavior. In addition, E-AM/AMPS powder had a high specific surface area so that it can be dissolved in water faster, greatly reducing the time and difficulty of configuring drilling fluid.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOCONJUGATE CHEMISTRY
·
2019
·
IF 4.349
Jian-Bin Zhen,Peng-Wei Kang,Mu-Han Zhao,Ke-Wu Yang
The traditional antibiotics have specific intracellular targets and disinfect in chemical ways, and the drug-resistance induced by the antibiotics has grown into an emerging threat. It is urgent to call for novel strategies and antibacterial materials to control this situation. Herein, we report a class of silver-decorated nanocomposite AgNPs@PCL-b-AMPs as potent nanoantibiotic, constructed by ring-opening polymerization of the monomers ε-caprolactone, Z-Lys-N-carboxyanhydrides (NCAs), and Phe-NCAs, then decorated with AgNPs, and characterized by SEM, TEM, and DLS. The biological assays revealed that the nanocomposite possessed strong antibacterial efficacy against both Gram-positive and Gram-negative bacteria including clinical isolated bacteria MRSA, VRE, P. aeruginosa, and K. pneumonia, exhibiting a MIC value range in 2–8 μg/mL. Importantly, the S. aureus and P. aeruginosa treated with the nanocomposite did not show drug-resistance even after 21 passages. Also, in vivo anti-infective assays showed that the nanocomposite was able to effectively kill bacteria in the infected viscera of mice. The study of the sterilization mechanism showed that the nanocomposite exhibited a multimodal antimicrobial mechanism, including irreversibly damaging the membrane structure, making the leakage of intracellular ions and subsequently inducing generation of the reactive oxygen species (ROS), ultimately sterilizing the bacteria. The nanocomposite exhibits effective broad-spectrum antibacterial properties and shows low toxicity to the mammalian cells/animal. Overall, the AgNPs@PCL-b-AMPs gained in this work show great potential as a highly promising antibacterial material for biomedical applications including drug-resistant bacterial infection.
研究领域:
生物材料学
·
微生物学
·
药理学
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产品关联
DOI
PubMed
高影响因子
Environmental Science-Water Research & Technology
·
2019
·Vol. 5
·期 10
·1736-1747
·
IF 4.195
Chuanchuan Cui,Shuguang Zhang
In order to control the formation of inorganic calcium scale and improve the environmental benefits of coal water slurry, a non-phosphorus-containing and multipurpose copolymer IA–AMPS–APEG was successfully prepared. The chemical structure, molecular weight and thermal stability of the copolymer were characterized by FTIR, GPC and TGA. FTIR confirmed that the structure of the copolymer was consistent with the expected structure. The results of GPC and TGA showed that the copolymer's number average molecular weight was 31 870, and it had excellent thermal stability. The scale inhibition performance of the copolymer was investigated to determine the optimal synthesis conditions: n(IA) : n(AMPS) : n(APEG) = 1 : 2 : 0.33, the dosage of initiator is 4% of the total mass of the monomers, and the reaction temperature and time were optimized to 80 °C and 4 hours, respectively. The maximum scale inhibition efficiencies against CaCO3 and CaSO4 scale deposits were 94.35% (24 mg L−1) and 85.69% (22 mg L−1). Morphologies and crystal structures of the scale deposits were studied with SEM, TEM and XRD techniques. The results demonstrated that the surface morphologies and crystal structures of the inorganic scale deposits were significantly destroyed by the copolymer. In addition, the prepared coal water slurry using IA–AMPS–APEG as a dispersing additive had a high concentration, low viscosity, and good fluidity and stability. In short, the novel and multifunctional copolymer in this work is considered to be an increasingly promising candidate not only as a scale inhibitor in cooling water and reverse osmosis systems but also as a dispersant used in the preparation of coal water slurry.
研究领域:
环境科学
·
材料化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2020
·
IF 4.231
Abdul Haleem,Jun Chen,Xiao-Xiao Guo,Jia-Yun Wang,Hui-Juan Li,Peng-Yun Li,Sheng-Qi Chen,Wei-Dong He
Temperature-responsive macro-porous cryogels of poly( N -iospropylacryamide- co -acrylamido-2-methylpropane sulfonic acid) [P(NIPAM- co -AMPS)] were prepared through redox-initiated cryo-polymerization at −12, −18 and −24 °C. Silver or gold nanoparticles (AgNPs or AuNPs) were formed inside P(NIPAM- co -AMPS) cryogels through the thermal reduction of absorbed AgNO 3 or HAuCl 4 , resulting in hybrid cryogels immobilized with AgNPs or AuNPs. Fourier transform infrared spectroscopy , thermal gravimetric analysis and X-ray diffraction confirmed the chemical composition . Cryogel morphology and nanoparticle distribution were investigated through scanning and transmission electron microscopies . By checking swelling ratio in neutral water, the temperature response of cryogels was identified. The hybrid cryogels were used as the catalysts to reduce p -nitrophenol with NaBH 4 at different temperatures and pHs. The hybrid cryogel with AuNPs had the higher catalytic activity than the counterpart hybrid cryogel with AgNPs. The catalytic activity of hybrid cryogels increased with temperature and pH. The temperature response of cryogels facilitated their isolation from the reaction mixture. Since AuNPs were fixed tightly onto the cryogel pore-wall and hardly lost, hybrid cryogels with AuNPs demonstrated no decrease in catalytic activity for 5 cycles of p -nitrophenol reduction.
研究领域:
材料科学
·
催化化学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 25
·e53968
·
IF 3
Wang Hui,Cui Mengbing,Chen Heng,Feng Jizheng,Zeng Yan,Zhou Hangyue,Chen Gairong
In this research, a new amphiphilic random copolymer of 2-acrylamido-2-methylpropane sulfonic acid (AMPS) and methyl methacrylate (MMA) (abbreviated as P(AMPS-co-MMA)) was synthesized by solution free radical copolymerization method, and was introduced into hydrophobic polyvinylidene fluoride (PVDF) membrane via nonsolvent induced phase separation (NIPS) process without adding pore-forming agent to enhance the permeability and antifouling properties of PVDF ultrafiltration membrane. The FT-NMR spectroscopy confirmed the chemical structure of P(AMPS-co-MMA) and copolymerization of AMPS and MMA, the effects of P(AMPS-co-MMA) on membrane surface chemical compositions, morphology, roughness, charge, hydrophilicity, permeability and antifouling properties were characterized in-detail. The results indicate that the PVDF/P(AMPS-co-MMA) composite membranes demonstrated excellent permeability, improved antifouling property and long-term stability due to the optimized membrane microstructure, stronger hydrophilicity and endowed negative charge. The PVDF composite membrane blended with 1.5 wt% P(AMPS-co-MMA) showed the best membrane performances, the pure water flux was 286.5 L·m −2 ·h −1 while the BSA rejection was as high as 98%, and the flux recovery ratio ( FRR ) and reversible fouling ratio to the total fouling ratio ( R r /R t ) reached 94.8% and 87% respectively, which outpaced ever reported and commercial PVDF membranes. Therefore, P(AMPS-co-MMA) copolymer was expected to be a potential excellent pore-forming material in fabricating high-performance membranes.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 25
·50601
·
IF 3.125
Wenlong Qin,Ruixuan Li,Hanxi Li,Guanfeng Jiang,Guowei Qin,Yang Wang,Jiang Yang
A Fe 3 O 4 nonaparticles coated with acrylamide/2-acrylamido-2-methyl-1-propanesulfonic acid copolymer(Fe 3 O 4 -Polymer NPs) was synthesized by emulsion polymerization. The structure of Fe 3 O 4 -Polymer NPs was then characterized by infrared spectroscopy, thermo-gravimetric analysis, and scanning electron microscopy. Meanwhile, the rheological properties of Fe 3 O 4 -Polymer NPs solution were systematically studied. The results showed that when dosage of hydrophobic Fe 3 O 4 -Oleic NPs is 10%, the synthesized Fe 3 O 4 -Polymer NPs was with the best viscosity enhancement performance, and the maximum saturation magnetization could reach to 20.0 emu/g. The apparent viscosity value of 5000 mg/L magnetic nano-composite solution was 154.6 mPa·s at 30°C. It shows strong viscosity enhancement ability and good temperature performance. Hence, it has great application potential in well stimulation of medium and high temperature oil and gas reservoirs.
研究领域:
材料科学
·
石油工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 133
·期 33
·
IF 1.866
Xin Tang,Bin Yuan,Yuanguang Yang,Yingquan Xie
A new water-soluble polymer was prepared and evaluated as a filtrate reducer for oil well cementing. The filtrate reducer (WSP) was synthesized from 2-acrylamido-2-methylpropane sulfonic acid (AMPS), acrylic acid (AA), dimethyl acrylamide (DMAA), and sodium allylsulfonate (SA) by aqueous free radical polymerization. The synthesis conditions were optimized by orthogonal experiment. The molecule structure of the synthesized copolymer (WSP) was verified by Fourier transformer infrared spectrum (FTIR) and nuclear magnetic resonance hydrogen spectroscopy ( 1 H-NMR). The molecule weight of the synthesized copolymer was determined by gel permeation chromatography (GPC). The thermal stability of the synthesized copolymer was tested by thermogravimetry and differential thermogravimetry (TG and DTG). When the dosage of WSP is up to 3% in fresh water cement slurry, the FL API can be controlled within 58 mL. In 37% salt water cement slurry, the FL API can be controlled within 90 mL when the dosage of WSP is 5%. The thermal degradation of WSP is not obvious before 289 °C. Compared with a commercial filtrate reducer BS-100L and a reported copolymer HTF200C, the WSP has better performance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43824.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）