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Insights into the multiple applications of modified polyacrylamide as oilfield corrosion inhibitor and water phase tackifier

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Petroleum Science 2022年第1期19卷 397-408页

作者： Tong Han ji-xiang guo Qing Zhao Tao Shen Shi-Ling Zhang Unconventional Natural Gas Institute China University of PetroleumChangpingBeijing102249People's Republic of China State Key Laboratory of Heavy Oil Processing and College of Science China University of PetroleumChangpingBeijing102249People's Republic of China

In order to obtain a multifunctional oilfield agent with both corrosion inhibition and oil displacement functions,a polymer with benzene ring structures is synthesized based on polyacrylamide(PAM)and used as inhibitor for the first *** including electrochemistry,weight loss and theoretical calculations are used to study the inhibition effect for P110 steel in 1.0 M *** experimental results show that the modified polymer poly-(Z)-N-benzylidenepropionamide(PBAM)has excellent inhibition effects,and the maximum efficiency can reach 90.62%in impedance spectroscopy *** benzene ring structure added in the modified polymer providesπelectrons for the adsorption of inhibitor on metal surface,strengthens the adsorption,and thus brings a better corrosion inhibition *** addition to the corrosion inhibition performance,the viscosity-increasing effect of PBAM is *** results show that the addition of benzene ring not only enhances the corrosion inhibition effect,but also brings temperature resistance to the ***,the salt tolerance of the polymer is affected,the synthesized PBAM which viscosity can above 500 m Pa s at 140℃ is suitable for high temperature and low salinity *** modified polyacrylamide has satisfactory corrosion inhibition and oil displacement performance,which provides a new idea for the development of oilfield chemistry.

关键词： Corrosion inhibitor Polymer Multifunctional pharmacy Computational study

Entangled States in a Single-Qubit Structure with SQUID Coupled with a Super-conducting Resonator

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Communications in Theoretical Physics 2008年第1期49卷 88-92页

作者： LIANG Bao-Long WANG ji-Suo MENG xiang-guo School of Physical Science and Information Engineering Liaocheng University Liaocheng 252059 China

In this paper, the number-phase quantization scheme of the mesoscopic circuit, which consists of a singlequbit structure with superconducting quantum interference device coupled with a super-conducting resonator, is given. By introducing a unitary matrix and by means of spectral decomposition, the Hamiltonian operator of the system is exactly formulated in compact forms in spin-l/2 notation. The eigenvalues and the eigenstates of the system are investigated. It is found that using this system the entangled states can not only be prepared, but also be manipulated by tuning the magnetic flux through the super-conducting loop.

关键词： single-qubit super-conducting resonator quantization spectral decomposition entangled state

Development review and the prospect of oil shale in-situ catalysis conversion technology

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Petroleum Science 2024年第2期21卷 1385-1395页

作者： Li Wang Chen-Hao Gao Rui-Ying Xiong Xiao-Jun Zhang ji-xiang guo The Unconventional Oil and Gas Institute China University of Petroleum-BeijingBeijing102200China

As an unconventional resource, oil shale possesses abundant reserves and significant potential for industrial applications. The rational and efficient development of oil shale resources holds immense importance in reducing national energy demand. In-situ catalytic technology, characterized by its high efficiency, low pollution, and minimal energy consumption, represents a key direction for future oil shale development. This paper provides a comprehensive review of research progress in in-situ oil shale mining technology, oil shale pyrolysis catalysts, the pyrolysis mechanism of kerogen, and the compatibility of different heating processes and catalysts. Furthermore, the paper proposes future research directions and prospects for oil shale in-situ catalytic technology, including reservoir modification, highefficiency catalyst synthesis, injection processes, and high-efficiency heating technology. These insights serve as valuable technical references for the advancement of oil shale in-situ catalytic technology.

关键词： Oil shale In-situ catalytic technology Pyrolysis catalyst Kerogen pyrolysis mechanism

Primary hepatic neuroendocrine tumor with multiple liver metastases:A case report with review of the literature

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World Journal of Gastroenterology 2015年第10期21卷 3132-3138页

作者： Kai Yang Ying-Sheng Cheng ji-jin Yang Xu jiang ji-xiang guo Department of Radiology and Medical Imaging Shanghai Sixth People’s Hospital Shanghai Jiaotong University Department of Interventional Radiology Affiliated Chang Hai Hospital of Second Military Medical University

We herein present a case involving a 41-year-old woman in whom ultrasound examination revealed multiple liver hemangiomas more than 3 years ***-up ultrasound examination revealed that the masses had significantly increased;the largest was located in the right lobe(about 8.2 cm×7.4 cm×6.0cm).Abdominal multidetector computed tomographyrevealed multiple well-circumscribed,heterogeneous,hypodense masses(largest,6.4 cm×6.3 cm×5.0cm)with significant contrast enhancement during the arterial and portal phases and with contrast washout and peripheral enhancement during the delayed *** resonance images demonstrated multiple well-circumscribed,heterogeneous,hypointense hepatic masses with significant contrast enhancement(largest,6.4 cm×6.5 cm×5.1 cm);multiple enlarged porta lymph nodes;and multiple s l i g h t l y e n l a rg e d re t ro p e r i t o n e a l l y m p h n o d e *** and immunohistochemical examination of the right mass biopsy specimen suggested a malignant neoplasm that had originated from a neuroendocrine cell type(grade 2 well-differentiated neuroendocrine carcinoma).After performing a systemic examination to exclude metastasis from an extrahepatic primary site,we considered that the masses had arisen from a primary hepatic neuroendocrine tumor with multiple liver *** patient underwent transcatheter arterial chemoembolization using a combination of oxaliplatin(150 mg)mixed with one bottle of gelatin sponge particles(560-710μm)and lipiodol(6 m L).Primary neuroendocrine tumors of the liver are extremely *** case is interesting because of the rarity of this neoplasm and previous misdiagnosis as multiple liver *** reported cases in the literature are also reviewed.

关键词： Liver Neoplasms-primary Neuroendocrine tumor Metas

The deposition of asphaltenes under high-temperature and highpressure (HTHP) conditions

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Petroleum Science 2023年第1期20卷 611-618页

作者： Rui-Ying Xiong ji-xiang guo Wyclif Kiyingi Hai-Xia Xu Xin-Peng Wu Unconventional Petroleum Research Institute China University of PetroleumBeijing102249China Petroleum Engineering Research Institute of Tarim Oilfield China National Petroleum CorporationXinjiang84100China

In this work,the factors affecting asphaltenes deposition in high-temperature and high-pressure wells were studied using backscattered light and PVT equipment customized to suit the well *** an examination of the intensity of backscattered light,it was revealed that there exists a linear relationship between temperature and asphaltene precipitation within a specific temperature *** this range,a decrease in temperature tends to accelerate asphaltene ***,the impacts of pressure and gas-oil ratio are more *** pressure depletion induces the asphaltenes to precipitate out of the solution,followed by the formation of flocs below the bubble *** addition,an increase in the gas-oil ratio causes a more severe asphaltene deposition,shifting the location of asphaltenes to deep well sections.

关键词： HTHP reservoir Asphaltene Aggregation Gas-oil ratio HTHP PVT cell Back-scattered light

In situ modification of heavy oil catalyzed by nanosized metal-organic framework at mild temperature and its mechanism

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Chinese Journal of Chemical Engineering 2024年第3期67卷 166-173页

作者： Li Wang ji-xiang guo Rui-Ying Xiong Chen-Hao Gao Xiao-Jun Zhang Dan Luo The Unconventional Oil and Gas Institute China University of Petroleum-BeijingBeijing 102200China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China

Two catalysts, nano-sized cobalt-metal-organic framework(Co-MOF) and nickel(Ni)-MOF, were successfully prepared by the modification method. Tetralin(C10H12) was used as the hydrogen donor for the catalytic cracking and hydrogenation modification study of the dehydrated crude oil from the Shengli Oilfield. The optimal reaction conditions were determined through orthogonal experiments, and the components of the crude oil and modified oil samples were analyzed. The results revealed that the nanoMOF catalysts were successfully prepared and exhibited high catalytic activity. They could catalyze the cracking of large molecules in heavy oil at mild temperatures(<300°C), leading to the decomposition of the hydrogen donor. When the mass fraction of the catalyst was 0.2%, the mass fraction of the hydrogen donor was 1%, and the reaction temperature was 280°C, the Ni-MOF showed the best catalytic viscosity reduction effect. It could reduce the viscosity of heavy oil at 50°C from 15761.9 m Pa.s to 1266.2 m Pa.s,with a viscosity reduction rate of 91.97%. The modification effect of Co-MOF was the next best, which could reduce the viscosity of heavy oil to 2500.1 m Pa.s with a viscosity reduction rate of 84.14%. Molecular dynamics simulations revealed a strong interaction force between the MOF surface and asphaltene molecules. In the process of heavy-oil catalytic hydrogenation, the nano-MOF catalyst exhibited high catalytic activity. On the one hand, the empty d orbitals outside the metal atoms in the catalyst could polarize the carbon atoms in the organic matter, accelerating the breaking of long chains. On the other hand, the metal atoms in the catalyst could bond with the carbon σ bonds, breaking the carbon-carbon bonds. This disrupted the structure of the recombined components in the crude oil, irreversibly reducing the viscosity of the heavy oil and improving its fluidity.

关键词： Nano-sized MOF Petroleum Viscosity reduction Catalyst Nanomaterials

Crude oil wax:A review on formation,experimentation,prediction,and remediation techniques

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Petroleum Science 2022年第5期19卷 2343-2357页

作者： Wyclif Kiyingi ji-xiang guo Rui-Ying Xiong Li Su Xiao-Hui Yang Shi-Ling Zhang Unconventional Petroleum Research Institute China University of PetroleumBeijing102249China Sinopec Northwest Oil Field Branch UrumqiXinjiang830011China CNPC Engineering Technology R&D Company Limited BeijingChina

Wax deposition during crude oil production,transportation,and processing has been a headache since the early days of oil *** may lead to low mobility ratios,blockage of production tubing/pipelines as well as fouling of surface and processing facilities,among *** snags cause massive financial constraints increasing projects’*** of meticulous research have been dedicated to this problem that is worth a ***,this paper reviews the mechanisms,experimentation,thermodynamic and kinetic modeling,prediction,and remediation techniques of wax *** overall assessment suggests that available models are more accurate for single than multi-phase flows while the kind of remediation and deployment depend on the environment and severity *** severe cases,both chemical and mechanical are synergistically ***,future prospective research areas that require attention are ***,this review could be a valuable tool for novice researchers as well as a foundation for further research on this topic.

关键词： Oil wax Phase modeling Inhibitors Dispersants Multi-phase flow

Temperature-resistant and salt-tolerant mixed surfactant system for EOR in the Tahe Oilfield

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Petroleum Science 2021年第2期18卷 667-678页

作者： ji-xiang guo Shi-Ling Zhang Yu-Qi Yang Zi-jing Yu Liang Li Yu-Shan Wang Long-Sheng Zhang Unconventional Petroleum Research Institute China University of Petroleum-BeijingBeijing102249China State Key Laboratory of Heavy Oil Processing At Karamay China University of Petroleum-Beijing At KaramayKaramay834000China Patent Examination Cooperation Hubei Center of the Patent Office Wuhan430205China SINOPEC Northwest Oil Field Company Urumchi830011China No.3 Oil Production Plant SINOPEC Northwest Oil Field CompanyLuntai841600China

A new temperature-resistant and salt-tolerant mixed surfactant system(referred to as the SS system)for enhancing oil recovery at the Tahe Oilfield(Xinjiang,China)was *** on the analysis of the crude oil,the formation water and rock components in the Tahe Oilfield,the long-term thermal stability,salt tolerance and the ability to change the wettability,interfacial activity and oil washing efficiency of the mixed surfactant system were *** system contains the anionic surfactant SDB and another cationic surfactant *** the total mass concentration of the SS solution is 0.15 wt%,m(SDB)/m(SDY)ratio is 1 to 1,and excellent efficiencies are achieved for oil washing for five kinds of Tahe Oilfield crude oils(more than 60%).In addition,after adding cationic surfactant,the adsorption capacity of the surfactant is further reduced,reaching 0.261 mg/*** oil displacement experiments indicate that under a temperature of 150°C and a salinity of 24.6×104 mg/L,the SS system enhances the oil recovery by over 10%after water *** SS anionic–cationic surfactant system is first presented in the open literature that can be successfully applied to obtain predictions of Tahe Oilfield carbonate reservoirs with a high temperature and high salinity.

关键词： Mixed surfactant system Temperature resistance Salt tolerance Carbonate reservoir Enhanced oil recovery

基于性能图谱的双肘杆伺服压力机杆系全局优化设计

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上海交通大学学报 2009年第4期43卷 688-692页

作者：付继祥郭为忠高峰上海交通大学重大装备设计与控制工程研究所上海200240

研究了双肘杆伺服压力机的杆系优化设计方法,提取杆系尺寸参数与性能指标的关系,在有界尺度空间内绘制性能图谱,以滑块在工作行程内机械增益最大和力均载变化波动量最小作为优化目标,选取最优解域,再采用复合形法,进行杆系尺度全局优化... 详细信息

研究了双肘杆伺服压力机的杆系优化设计方法,提取杆系尺寸参数与性能指标的关系,在有界尺度空间内绘制性能图谱,以滑块在工作行程内机械增益最大和力均载变化波动量最小作为优化目标,选取最优解域,再采用复合形法,进行杆系尺度全局优化设计.优化后各构件的质心加速度曲线有明显改善,减小了双肘杆各运动副的冲击载荷,提高了冲压质量,从而为双肘杆伺服压力机的杆系尺寸设计提供了有效方法.

关键词：双肘杆伺服压力机优化设计有界尺度空间性能图谱