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Copyright of China Mining Magazine is the property of China Mining Magazine Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Sand production in Wells is the main contradiction facing the explo让ation of unconsolidated sandstone oil and gas reservoirs・ Resin consolidated artificial wellbore is the most widely used chemical sand control method in oil fields at present because of its excellent effect on fine sand control, which can achieve screen-free sand control under complex well conditions ・ The extended finite element method (XFEM) was used to simulate the crack passing through a single particle, a pair of particles and a plurality of evenly distributed particles, and the influence of nanoparticles on the crack growth path and damage dissipation energy was studied・ It was found that the influence range of nano-SiO2 on the crack was 5 nanoparticle diameters, and the best mass fraction of nano-SiO2 was 3% of the resin matrix. The results of measuring the impact strength of resin spline and the compressive strength of resin sand control body show that when the mass fraction of nano-SiO2 is 3%, the impact strength of resin spline increases about 39% and the compressive strength of resin sand control body increases about 36%, which significantly improves the mechanical properties of phenolic resin. [ABSTRACT FROM AUTHOR]

Introduced the existing forms of water and salt in crude oil, the harm of salt and water in crude oil, the equipment of electric desalting and dehydration, the factors affecting the effect of electric desalting, including temperature, water injection, type of demulsifier, pressure, mixing strength and summarizes several existing domestic and foreign electric desalting and dehydration technologies, including ultrasonic electric desalting technology, double oil inlet and double electric field technology.The microwave radiation method and the application progress of these technologies are introduced, and the future development of crude oil electric desalting and dehydration technology is prospected. [ABSTRACT FROM AUTHOR]

Hydrogen sulfide gas appears in some oil and water Wells in Huang 3 Block of Changqing Oilfield, and the number of Wells increases year by year, which brings a certain safety hidden danger to the production of the oilfield.The reasons for the rise of hydrogen sulfide in a crude oil and produced liquid in Changqing Oilfield were analyzed through experiments.The relationship between oil soluble hydrogen sulfide and temperature, pressure, water content and pH value was carried out by qualitative evaluation and quantitative determination of hydrogen sulfide, and the process of hydrogen sulfide generated by sulfate-reducing bacteria in the transport process was discussed.The results show that the changes of temperature, pressure, water content and pH value, as well as the content of sulfate-reducing bacteria have effects on the rise of hydrogen sulfide.SW-02 desulfurizer should be added to effectively inhibit the production of hydrogen sulfide in oil Wells, which provides technical support for ensuring the safe production of oil fields. [ABSTRACT FROM AUTHOR]

Copyright of Food & Machinery is the property of Food & Machinery Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of China University of Petroleum is the property of China University of Petroleum and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Taiwan Agricultural Research is the property of Taiwan Agricultural Research Institute, Council of Agriculture, Executive Yuan and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The new1.0 Mt/a ethylene cracking unit and 0.8 Mt/a p-xylene unit in a 15.0Mt/are fining-chemical integration project in China was designed to be matched with the original 12.0Mt/ are fining project and the new 3.0Mt/a refining reconstruction and expansion project. After theprojectwasimplemented,thedieseltogasolineratiowasrelativelyhigh,andthetotalamountof refinedoilwastoomuch;theethylenecrackingfeedstockwereinsufficient,andtheoverallproperties were heavy the competitiveness of p-xylene unit technology route was weak. Therefore, above problems need to be solved. Method The route was determined that there fining processing project added"2.2 Mt/adieselhydrocracking+2.6 Mt/a continuous reforming to optimize there finery processingschemes,increasingthefeedstockofethylenecrackingandp-xylene.ResultsCompared with before optimization, the diesel to gasoline ratio decreased from 1.74to1.00,andthetotal refinedoilreducedby1876.8kt/a; the total ethylene cracking unit feedstock reduced by about 17.4kt/abuttheethyleneproductionincreasedby56.1kt/a, the ethylene cracking feedstock were further lightened; p-xylene unit feedstock increased from 1 270. 3 kt/a to 2 916. 9 kt/a, which could meet the demand of 2 000 kt/a of p-xylene unit feedstock. Conclusion Using the 2017 version of the crude oil price · system of 50 US dollars/bbl, (1 bbl=159 L), the incremental investment rate of return (after tax) of the project is 27. 62 %, which has good economic benefits. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food & Machinery is the property of Food & Machinery Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the high-temperature and high-pressure experiments, it is essential to know the pressure and temperature of sample as well as the temperature distribution inside sample chamber. Therefore, it is necessary to calibrate the pressure and temperature of the experimental assembly before using the hightemperature and high-pressure experimental device. Here we carried out the pressure and temperature calibrations experiments on 19 mm outer diameter sample assembly of the end-loaded piston-cylinder apparatus. We calibrated the pressure of sample chamber by using the melting curve of sodium chloride (NaCl) under high pressure. When the oil pressure of the oil cylinder drops significantly, the NaCl in the sample chamber melts; according to the temperature measured by the thermocouple at this time and the comparison of the melting curve of NaCl under high pressure published by the predecessors, the real pressure in the sample chamber was determined. The pressure calibration results show that there is a linear relationship between the real pressure and the nominal pressure. The double thermocouple method was used to measure the temperature in the center and upper part of the 19 mm outer diameter sample assembly chamber. It was found that the temperature in the center of the sample chamber was higher than the temperature in the upper part of the sample chamber. In addition, the temperature gradient in the sample chamber increases with increasing temperature and decreases with increasing pressure. The temperature gradient in the sample chamber during the second stage pressurization and heating is higher than the temperature gradient in the sample chamber of the first stage pressurization and heating experiment. The pressure and temperature calibration results obtained in this study are of reference value and guiding significance for future high-temperature and high-pressure experimental study using 19 mm outer diameter sample assembly. [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The Gulf of Guinea is the largest gulf in Africa, with the rise of oil exploitation, shipping and offshore engineering in the sea area, it is more and more important to explore the wave property in this area. Based on the third generation Simulating Waves Nearshore (SWAN) model, a two-layer-nesting wave model from the Atlantic Ocean to the Gulf of Guinea was established to simulate the waves in the Gulf of Guinea under typical sea conditions, and study its wave distribution and propagation characteristics. Simulation results show that: The waves in the Gulf of Guinea are mainly affected by the weather system in the southern hemisphere, especially the swells generated and transmitted by the roaring forties. The wave direction in the Gulf of Guinea is relatively stable, mainly in the south and southwest, and the northwest corner is most seriously affected by mixed waves due to the influence of wind field and wave direction. The wave intensity in the central sea area is not weaker that in the northwest, and there are high-strength swells. The southeast sea area is the place with the lowest wave height in the Gulf of Guinea. [ABSTRACT FROM AUTHOR]

In order to analyze China’s bamboo and rattan commodity export situation and its influencing factors under the global supply chain environment, optimize the industrial structure of bamboo and rattan commodity export and promote the upgrading of forest products international logistics industry, this paper decomposed the time series of the annual export of the six major types of bamboo and rattan commodity value during 2007-2019 by the empirical mode decomposition and analyzed the impacts of various factors on China’s bamboo and rattan commodity exports from three aspects including supply level, market demand, and trade environment by regression analysis. Research showed that according to the empirical mode decomposition results, the fluctuations in the export value of bamboo and rattan raw materials（BRRM）, canned bamboo shoots（CBS）, bamboo charcoal（BC）, bamboo and rattan plaits（BRP） and bamboo and rattan furniture（BRF） were mainly sourced from the long-term trend component, and the fluctuations in the industrialized use of bamboo products（IUBP） were mainly due to the medium and long-term fluctuation component. Stepwise regression analysis showed that the trade environment was the main aspect that affects China’s bamboo and rattan commodity exports. The devaluation of the Chinese currency played a significant role in promoting the export of bamboo charcoal and bamboo and rattan furniture. The rise in international crude oil prices significantly hindered the export of bamboo and rattan raw materials and industrialized utilization of bamboo. The outbreak of the international financial crisis also had negative impact on the export of bamboo and rattan raw materials; meanwhile, the supply level also had a significant impact on the export of bamboo and rattan products. The increase in the import of bamboo and rattan raw materials had a significant hindering effect on the export of industrialized utilization of bamboo and bamboo and rattan plaits, but significantly promoted the export of bamboo charcoal and bamboo and rattan furniture. The expansion of bamboo forest area had a significant promotion effect on the increase in the export value of canned bamboo shoots. Therefore,China’s export value of bamboo and rattan commodities from 2007 to 2019 showed a fluctuating upward trend. The export value of various types of bamboo and rattan commodities fluctuated relatively smoothly. China’s export of bamboo and rattan was most significantly affected by trade environment factors,followed by supply factors. The change in market demand was relatively small,so the export of bamboo and rattan commodities was relatively insignificant. [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Surfactant Detergent & Cosmetics (1001-1803) is the property of China Surfactant Detergent & Cosmetics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin University of Science & Technology is the property of Journal of Harbin University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Since the selling price of oil products is related to the density of crude oil, the quality of oil products can be improved by controlling the mixing proportion of crude oil with different densities. However, it is found by many on-site tests that the density of oil mixture does not conform to the linear weighting law, resulting in the deviation between the density of oil mixture theoretically calculated and the measured value, which affects the sales benefit of crude oil. Therefore, based on the experimental results of mixed oil density in several groups, this paper fitted the mathematical model of mixed crude oil density. Field application of the model shows that the average error between the calculated value and the measured value can be controlled within 0.000 6 g/cm³, and the research results can provide guidance for the field crude oil allocation. [ABSTRACT FROM AUTHOR]

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

For ship operating benefit and ship energy efficiency index EEOI of voyage charter, the ship operating benefit and EEOI estimation model were established in the paper. Four scenarios i. e., low oil price and low freight rate, low oil price and high freight rate, high oil price and low freight rate, high oil price and high freight rate, were calculated by some cases. The results show that EEOI is related to the speed and is not affected by the oil price and the freight rate, and the slower the speed is, the lower EEOI. The faster ship speed leads to the greater the voyage benefit in the scenarios of ow oil price and low freight rate, and low oil price and high freight rate. When the ship speed is slightly higher than the minimum speed, the voyage benefit reaches the most in the scenarios of high oil price and low freight rate, and high oil price and high freight rate. The model established for the ship voyage efficiency and EEOI can provide a certain reference for the choice of shipping speed of the shipping sectors. [ABSTRACT FROM AUTHOR]

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Central China Normal University is the property of Huazhong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)