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石油机械 2021年第9期49卷 122-128页

作者：敬加强尹晓云 Boris NMastobaev Anvar RValeev 孙杰刘力华西南石油大学石油与天然气工程学院油气消防四川省重点实验室 Department of Transport and Storage of oil and Gas Ufa State Petroleum Technological University 西安交通大学动力工程多相流国家重点实验室中国石油天然气股份有限公司西南油气田分公司通信与信息技术中心

针对管汇系统中普遍存在并联引出管内气液两相流量分配不均及气液比例不同的现象,开展了T形管内雾状气液两相流相分离特性研究。通过数值模拟研究,得到了水平T形管内两相流动特性、轴向压降变化规律及相分离特征。研究结果表明:空气-水... 详细信息

针对管汇系统中普遍存在并联引出管内气液两相流量分配不均及气液比例不同的现象,开展了T形管内雾状气液两相流相分离特性研究。通过数值模拟研究,得到了水平T形管内两相流动特性、轴向压降变化规律及相分离特征。研究结果表明:空气-水雾状流在T形管水平主管分流处的流速与压力急剧变化、相分离现象显著,而在远离分流处,流速稳定、压力变化缓慢、气液两相分布均匀;该雾状流沿水平主管和侧支管的轴向压降在分流处大幅变化,而在远离分流处,压降变化规律与正常管输压降变化规律一致;流体扰动、气液两相惯性力差异及其相互作用等造成雾状两相流在管内相分配不均。研究结果可为实际工程中的管汇设计及优化提供理论依据。

关键词： T形管雾状两相流数值模拟流动特性轴向压降相分离

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Remediation Effects of Soil Conditioners for CdPolluted Paddy fields

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Agricultural Science & Technology 2019年第3期20卷 31-38页

作者： XIE Yun-he HUANG Bo-jun JI Xiong-hui TIAN Fa-xiang WU Jia-mei GUAN Di Hunan Institute of Agro-Environment and Ecology Key Lab of PreventionControl and Remediation of Soil Heavy Metal Pollution in Hunan ProvinceChangsha 410125PRC Collaborative Innovation Center of Paddy Crop and oil Crops in Southern Changsha 410125PRC Ministry of Agriculture Key Lab of Agro-Environment Institute in the Midstream of Yangtze River Plain Changsha 410125PRC Foreign Economic&Technical Cooperation Center Hunan Department of AgricultureChangsha 410005PRC

A field experiment was conducted to evaluate the remediation effects of 14 soil conditioners for Cd-polluted paddy fields contrasted with conventional fertilization and *** results showed that soil conditioners had no significant impact on rice *** the soil conditioners had stable effects on decreasing the Cd content in grains,the effects varied with the category of *** general,The Cd contents of early rice and late rice were reduced by 22.65%~44.24%and 15.20%~63.03%,***,the stem and leaves showed the same decreasing *** analysis suggested that soil conditioners can be divided into three categories:the first category increases the soil pH to inhibit the Cd activity and cut down the Cd translocation from soil to stem and leaves,which is most efficient in the reduction of Cd content in rice grains;the other category relies on the antagonism or co-precipitation between Cd and certain elements to inhibit the translocation and redistribution of Cd from rice stems to grains,providing a common effect on Cd reduction;the last category can be seen as a combination of the former two categories from the perspective of its functional mechanism and it has a moderate effect on the reduction of Cd contents in rice grains.

关键词： Soil conditioner Cd-contaminated Paddy soil Effectiveness evaluation Heavy metal

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Production Well Microbial Mitigation and H2S Risk Management

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Journal of Physical Science and Application 2020年第2期10卷 19-29页

作者： Abdulmohsen Al-Humam Hisham Al-Shuwaikhat Bahkly Thamer Abdullah Al-Nami Salman Al-Ramel EXPEC Advanced Research Center Saudi AramcoProduction Technology Div. Sa Production Energy Department Ngpe Technical Support Unit Khurais Producing Department Khurais Producing Inspection Unit Khurais Producing Department Plant Energy Unit Sa oil Ops Technical Support Department Udhailiyah Lab Unit

One field has been eternally acknowledged as a sweet arena without the presence of any souring *** the other hand,the Sulfate Reducing Bacteria(SRB)growth which has been lately observed in the field Water Injection System played a major role in increasing the H2S concentrations in particular A *** objective of this study is to mitigate the SRB growth in the A Water Injection System and manage the risk of the Hydrogen Sulfide(H2S).In order to reduce the H2S concentrations and the return the fields back to their original ***,Biocide Treatment usage;based on the thorough evaluation performed in both the Lab and fields by collecting more than 100 samples from designated wellheads and identified sampling points in the field Water Injection System *** field trial for one year was conducted with a persistent monitoring *** appealed that the Biocide Treatment is influential,efficient and functional,carving deeper in the SRB mitigation and H2S risk management,the averaged H2S concentrations and trends in the fields are being controlled and minimized in both the oil and gas phases.

关键词： H2S risk management SRB mitigation

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