COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Tiantian Zhang,Xiangchun Chang,Xiaoyong Wen,Zhiwen Li,Qianru Yang,Zhiping Li,Caspar Daniel Adenutsi,Mingwei Gao,Qing You
Hydraulic fracturing has been proposed as a potential technology for the development of low-permeability oil reservoirs and also has promising application prospects offshore. In this study, a novel SiO 2 -enhanced seawater-based temperature-resistant clean fracturing fluid was formulated. The fracturing fluid main agents, additives and reducing agents were screened. Besides, the physical and chemical properties (rheology) as well as application (i.e., sand-carrying, gel-breaking, dynamic fluid loss, dynamic damage and anti-swelling) performance of the proposed SiO 2 -enhanced seawater-based temperature-resistant clean fracturing fluid were systematically investigated. It was revealed that 3.2 wt% AASB-17+1.92 wt% NaSal+0.1 wt% SC-107+0.1 wt% TS3 was the optimal SiO 2 -enhanced seawater-based clean fracturing fluid system formula. The SiO 2 -enhanced seawater-based temperature-resistant clean fracturing fluid exhibited remarkable rheological characteristics , the temperature and shear resistance was increased by 28 %, with a maximum temperature resistance of 90ºC. This system can be applied to the fracturing development of most oil reservoirs in the Bohai Bay. In addition, the presence of SiO 2 nanoparticles significantly improved the sand-carrying properties of the proposed clean fractuirng fluid system. The experimental results also suggested that the SiO 2 -enhanced seawater-based temperature-resistant clean fracturing fluid showed excellent performance of shear recovery (fixed shear viscosity recovery rate was 100 %), gel breaking (30 min,1 mPa·s), filter loss ( C w =4.75×10 −4 m/min 1/2 ), anti-swelling (anti-swelling rate was 77.78 %) and salt tolerance. This study provides fundamental technical support for the application of SiO 2 -enhanced seawater-based temperature-resistant clean fracturing fluid in offshore fracturing.
研究领域:
石油工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2019
·Vol. 30
·期 9
·1920-1931
·
IF 3.25
Ting Wang,Bing–rui Li,Li–guang Wu,Yu–bing Yin,Bo–qiong Jiang,Ju–qing Lou
La 3+ - or Yb 3+ -doped TiO 2 supported on the surface of reduced graphene oxide were fabricated by adsorbed-layer nanoreactor synthesis (ANS) coupling with a solvothermal treatment to extend photocatalysis application in the advanced treatment of simulated wastewater with high salt concentration. Results showed that La 3+ or Yb 3+ could distribute in the TiO 2 lattice, only in ANS preparation with graphene oxide as the carrier, to replace Ti 4+ during the solvothermal treatment, thus introducing TiO 2 mixed-crystal and heterojunction structures in the catalysts. La 3+ or Yb 3+ caused lattice distortion structures and anionic vacancies in the TiO 2 lattice. The anionic vacancies (oxygen vacancies) might generate Ti 3+ in catalysts, thus enhancing visible-light response, due to impurity levels introduced by La 3+ or Yb 3+ . As the strong adsorption capability of the catalyst for phenol was not interfered by salt ions in the simulated wastewater, the catalysts could efficiently degrade phenol. The highest removal rate of phenol was approximately 90%.
研究领域:
环境科学
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材料化学
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光催化
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水处理
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纳米材料
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表面化学
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环境功能材料
✓ 已验证
DOI
高影响因子
MARINE POLLUTION BULLETIN
·
2025
·
IF 4.9
Tianshuo Lan,Yiping Du,Meichun Liu,Xinna Yu,Danyang Wang,Haotian Huang,Tianyuan Liu,Meizhen Huang
As a global environmental concern, real-time detection of marine nanoplastics (NPs) has gained increasing attention. However, current detection methods are still confronted with the challenge of detecting low concentration NPs in marine solution conditions, and it is imperative to establish a rapid detection method for directly detecting NPs in marine solution. In this study, a silver coated gold nanoparticle (Au@Ag) based real-time SERS detection strategies is proposed, with a particular focus of the enhancement mechanism of the particle diameter for SERS performance. Compared with common SERS enhancing particles, Au@Ag demonstrates remarkable SERS enhancement capability. For mechanism investigation, particle diameter is a critical factor significantly influenced the signal intensity of testing specimen. Among all diameter combinations, SERS performance reaches the maximum level when the particle diameter of Au@Ag is slightly smaller than polystyrene nanoparticles (PS NPs). Under these conditions, the lowest detection concentration of PS NPs in purified water without any extra pretreatments was determined to be approximately 0.1 μg/mL. By employing the same PS NPs and Au@Ag in artificial seawater solution, the lowest detection concentration of PS NPs reaches to 0.01 μg/mL. These results indicate that the efficacy of Au@Ag for real-time SERS detection of PS NPs in marine solution, and provide a valuable reference for future study of material selection and particle size optimization for NPs in-situ SERS detection for real marine condition.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 140
·期 4
·e53372
·
IF 3.057
Guohao Miao,Hai Zhang,Yu Yang,Jin Qu,Xinru Ma,Junping Zheng,Xiaofei Liu
Zirconium is one of the most commonly used crosslinkers for guar gum-based fracturing fluid. Nevertheless, it is difficult for zirconium crosslinkers applied in fracturing to possess both high temperature resistance and adjustable crosslinking time. Meanwhile, few people did systematical research on the crosslinking process of fracturing fluid. In this study, an organic zirconium crosslinker with high temperature resistance and controllable crosslinking time was synthesized. The seawater-based fracturing fluid gel prepared with the crosslinker could perform well under 170°C. Oscillatory shear experiments were conducted to analyze the rheology of the gelation process. Moreover, steady-state shear and micro-rheological tests were conducted to analyze the dynamic and static crosslinking process of the fracturing fluid, respectively. Meanwhile, rheo-kinetic equation was used to fit the data and the effects that various factors had on the gelation process were illustrated thoroughly. This study not only prepared an organic zirconium crosslinker with good performances, but also explored the crosslinking process of fracturing fluid gel, which could improve its further application in oilfields.
研究领域:
石油工程
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化学工程
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材料科学
✓ 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）