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Development of a high-temperature Thixotropic Cement Slurry System

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Fluid Dynamics & Materials Processing 2023年第11期19卷 2907-2921页

作者： Ping Lv Jiufei Liu Mengran Xu Hui Tian Huajie Liu Yuhuan Bu Zhuang Cai Junfeng Qu Institute of Petroleum Engineering Technology Sinopec Northwest Oil Field CompanyUrumqi830000China Xinjiang Branch of CNPC Chuanqing Drilling Engineering Company Limited Korla841000China School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580China Sinopec Shengli Petroleum Engineering Co. Ltd.DongyingChina Henan Science and Technology Innovation Promotion Center Zhenzhou450003China

Cementing carbonate reservoirs is generally a difficult *** so-called thixotropic cement slurry has gained considerable attention in this regard as it can help tofix some notable *** precisely,it can easilyfill the leakage layer;moreover,its gelling strength can grow rapidly when pumping stops,thereby increasing the resistance to gas channeling,effectively preventing this undesired phenomenon in many ***-temperature thixotropic cement slurry systems,however,are still in an early stage of development and additional research is needed to make them a viable *** the present study,using a self-developed composite high-temperature thixotropic additive as a basis,it is shown that the compressive strength can be adjusted by tuning the proportion of silica sand,the high-temperature retarder,fluid loss additive and dispersant(compatible with the thixotropic additive).According to the tests,the developed high-temperature thixotropic cement slurry system has a 14 d compressive strength of 29.73 MPa at 150°C,and a thickening time of 330 min when the dosage of retarder is 2%.At the same time,the rheological property,water loss,permeability,water separation rate,and settlement stability of the cement slurry system meet the requirements of cementing construction.

关键词： high temperature resistance thixotropy cement slurry system

Excellent electromagnetic wave absorption of MOF/SiBCN nanomaterials at high temperature

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Chinese Journal of Aeronautics 2021年第11期34卷 277-291页

作者： Chunjia LUO Peng MIAO Yusheng TANG Jie KONG MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Shaanxi Key Laboratory of Macromolecular Science and TechnologySchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China

Electromagnetic wave absorbing materials at high-temperature are urgently needed for stealth aircrafts or aero-engines worked in harsh *** this contribution,cobaltcontaining siliconboron carbonitride(MOF/SiBCN)nanomaterials were prepared by pyrolyzing metal–organic framework,*** 2-methylimidazole(ZIF-67),and hyperbranched *** rhombic dodecahedral ZIF-67 and cobalt element promoted in situ formation of dielectric loss phases,including SiC nanocrystals,CoSi nanocrystals and turbostratic *** ZIF-67/SiBCN nanomaterials showed excellent microwave absorption both at room and elevated *** minimum reflection coefficient(RC_(min))was-51.6dB and effective absorption bandwidth(EAB)is 3.93GHz at room *** an elevated temperature of 600℃,the RC_(min) reached-30.29 dB and EAB covered almost the whole X-band(3.95GHz,8.45–12.4GHz).The ZIF-67/SiBCN nanocomposites are promising and useful platform for microwave absorbing materials at *** may shed light on the downstream applications in designing next generation areo-engines and stealth aircrafts.

关键词： Electromagnetic wave absorption high temperature resistance Metal-organic framework Polymer-derived ceramics Siliconboron carbonitride

Study on a Polyamine-Based Anti-Collapse Drilling Fluid System

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Open Journal of Yangtze Oil and Gas 2022年第3期7卷 203-212页

作者： Wenwu Zheng Fu Liu Jing Han Binbin He Shunyuan Zhang Qichao Cao Xiong Wang Xintong Li Sinopec Group North China Petroleum Engineering Co Ltd. Zhengzhou China Overseas Institute of China Petroleum Corporation Engineering Technology Research Institute Beijing China Yangtze University Jingzhou China

In complex strata, oil-based drilling fluid is the preferred drilling fluid system, but its preparation cost is high, and there are hidden safety risks. Therefore, the new progress of high-performance anti-collapse water-based drilling fluid at home and abroad is analyzed. It is difficult to prevent and control the well collapse. Once the well wall instability problem occurs, it will often bring huge economic losses to the enterprises, and the underground safety accidents will occur. In order to ensure the stability of the well wall and improve the downhole safety, the key treatment agent of water-based collapse drilling fluid is selected, the anti-collapse drilling fluid system is formulated, the evaluation method of drilling fluid prevention performance is established, and a set of water-based drilling fluid system suitable for easy to collapse strata in China is selected to ensure the downhole safety. The development trend of high performance anti-collapse water-based drilling fluid is expected to provide a reference for the research of high performance anti-collapse water-based drilling fluid system and key treatment agent.

关键词： Well Wall Stability Anti-Collapse Water-Based Drilling Fluid Evaluation Method high temperature resistance Salt resistance

3D-printed controllable gradient pore superwetting structures for high temperature efficient oil-water separation

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Journal of Materiomics 2021年第1期7卷 8-18页

作者： Zhipeng Jin Hui Mei Yuekai Yan Longkai Pan Hongxia Liu Shanshan Xiao Laifei Cheng Science and Technology on Thermostructural Composite Materials Laboratory School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'anShaanxi710072China

Superwetting surfaces have the potential to address oil pollution in water,through their ability to separate the ***,it remains a great challenge to fabricate stable and efficient separation structures using conventional manufacturing ***,the materials traditionally used for oil-water separation are not stable at high ***,there is a need to develop stable,customizable structures to improve the performance of oil-water separation *** recent years,3D printing technology has developed rapidly,and breakthroughs have been made in the fabrication of complicated ceramic structures using this ***,a ceramic material with a gradient pore structure and superhydrophobic/superoleophilic properties was prepared using 3D printing for high-efficiency oil-water *** gradient pore structure developed here can support a flux of up to 25434 L/m^(2)h,which is nearly 40%higher than that an analogous structure with straight *** 200℃,the oil-water separation performance was maintained at 97.4%.Furthermore,samples of the material exhibited outstanding mechanical properties,and chemical stability in a variety of harsh *** study provides an efficient,simple,and reliable method for manufacturing oil-water separation materials using 3D printing,and may have broader implications for both fundamental research and industrial applications.

关键词： 3D printing Gradient pore structure high temperature resistance Surface functionalization Oil/water separation

Zirconia Hollow Spheres and Their Application

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China's Refractories 2018年第4期27卷 26-30页

作者： GAO Qianyu WU Aijun WANG Qi YIN Hongji Central Research Institute of Building and Construction MCC Group State Key Laboratory of Advanced Refractories Sinosteel Luoyang Institute of Refracoties Research Co.Ltd.

Zirconia hollow sphere products are ultra-high temperature energy saving lightweight insulating refractories in zirconia *** not only have the same refractoriness as zirconia products,but also have the advantages of low bulk density and excellent thermal insulation *** thermal conductivity is 0.3-0.4 W · m-1 · K-1 only 1/2 of that of the ordinary zirconia *** are special refractories which can be used steadily up to 2 400 ℃ in oxidation,reduction and vacuum *** hollow sphere products are the best lining refractories for various ultra-high temperature kilns and furnaces of tungsten and molybdenum metal products processing,artificial crystals,and quartz industrial production.

关键词： zirconia hollow sphere high temperature resistance thermal insulation application

Laboratory Study on 210°C high temperature and Salt Resistant Drilling Fluid

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Open Journal of Yangtze Oil and Gas 2021年第3期6卷 83-97页

作者： Xintong Li Qichao Cao Li He Shunyuan Zhang Song Wang Yangtze University Jingzhou China China Petroleum Engineering Technology Research Institute Co. Ltd. Overseas Office Beijing China

Combined with the current research status in this area at home and abroad, with the improvement of salt and high temperature resistance as the research goal, the laboratory research of salt and high temperature resistant drilling fluid system has been carried out, and lubricants, inhibitors and stabilizers have been optimized. The final drilling fluid formula is: water + 3% sepiolite + 0.3% Na2CO3 + 3% RH-225 + 3% KCOOH + 3% G-SPH + 3% CQA-10 + 1.5% ZX-1 + Xinjiang barite, density 2.2 g/cm3, using hot-rolling furnace, environmental scanning electron microscope, high temperature and high pressure plugging instrument and Zeiss microscopes and other instruments use core immersion experiments, permeability recovery value experiments, and static stratification index methods to perform temperature resistance, reservoir protection, plugging performance, and static settlement stability performance of the configured drilling fluid., Inhibition performance, biological toxicity, salt resistance, anti-pollution performance have been tested, and it is concluded that the temperature resistance is good under the condition of 210°C, and the salt resistance can meet the requirements of 20% NaCl + 0.5% CaCl2 concentration. It has a good reservoir protection effect, the permeability recovery value can reach more than 90%, the performance of restraining water dispersion and cuttings expansion is good, the heat roll recovery rate can reach more than 85%, and the SSSI value shows that its settlement stability performance is good;Its plugging performance is good under high temperature and high pressure. It laid the foundation for the next step to promote the field application of the drilling fluid system.

关键词： Salt resistance high temperature resistance Drilling Fluid Performance Evaluation

Screening of high temperature Resistant Fodder Yeast Strains

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Agricultural Biotechnology 2015年第4期4卷 58-60,69页

作者： Yufeng LIU Yueming WANG Qingli YANG Yanru JI Yan DONG Jie SHI Daqing Branch of Heilongjiang Academy of Sciences

[ Objective] This study aimed to screen yeast strains suitable for high temperature processing of formulated biological feed. [ Method ] high temperature resistance and culture conditions of six yeast strains were investigated. [Result] Two yeast strains resistant to high temperature （45 ℃ ） with high viable cell number （10^8 cells/ml） were screened, including DQFC2117-1 and DQFC2122-2. [ Conclusion] Strains DQFC2117-1 and DQFC2122-2 could be used as high temperature resistant yeast strains for processing of formulated biological feed.

关键词： high temperature resistance Fodder yeast Formulated feed Biological feed

新型缔合聚合物AP调剖体系研制及矿场应用(英文)

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Petroleum Science 2004年第4期1卷 47-56页

作者：赵化廷赵普春陈洪张三辉中原油田采油三厂中国山东莘县252429

A new polymer system, referred to simply as the AP-P4 polymer system, aims at solving the problems of high temperature, high salinity and the poor shearing resistance, all of which are encountered by conventional polymers (such as polyacrylamide) used in profile control, profile performance improvement and EOR operations in the Zhongyuan Oilfield, Sinopec. This system has been developed on the basis of the specific molecular structure and the better properties of high temperature resistance, high salinity resistance and strong shearing resistance of the new type of AP-P4 association polymer. Acidity modifying agents and cross-linking agents (MZ-YL, MZ-BE, MZ-XS), compatible with the new polymer system, are selected. Results of performance tests have shown that the new polymer system has excellent thickening, high temperature, high salinity and shearing resistance and anti-dehydrating properties. In 2003, it underwent its first pilot test in 26 wells in China, with remarkable effects in increasing oil production and decreasing water production. The newly developed polymer system and its application technology described in this paper may play a guiding role in polymer profile control operations in the oil reservoirs of high temperature and high salinity.

关键词： association polymer profile control high temperature resistance high salinity resistance strong shearing resistance