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Mud-Shale Gas Forming Conditions in Carboniferous and Strategic Area Selection in Qaidam Basin

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 254-256页

作者： LI Junliang xiao yongjun LIN Wu School of Geoscience China University of Petroleum Qingdao City Shandong Province 266555 China Western New Prospect Research Institute Shengli Oilfield Company SINOPEC Dongying City Shandong Province257000 China

Exploration at home and abroad have proved that oil and gas preserved in mud-shale reservoir is frontier for oil industry, marine mud-shale in America and marine/ terrestrial mud-shale in China both exhibited good potential （Zhang et al., 2008; Nie et al., 2009; Li et al., 2010; Dong et al., 2011; Jiang et al., 2012）.

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Novel phasefield model of hydraulic fracture propagation in poroelastic media and numerical investigation of interaction between hydraulic fracture and natural fracture

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Petroleum 2024年第4期10卷 672-695页

作者： Sang Yu Yi Song Shouyi Wang yongjun xiao Junjie Hu Yiting Wang Liangping Yi Zhaozhong Yang PetroChina Southwest Oil&Gas Field Company Chengdu610051China State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation//Southwest Petroleum University Chengdu610500China

A novel numerical model is established to study the hydraulic fracture extend in poroelastic media with natural fractures based on the phase field *** this new model,the poroelasticity parameter(Biot's coefficient,Biot's modulus,and porosity)of rock is a function of the phasefield ***,a new phase field evolution equation is *** finite element numerical discretization method and Newton–Raphson(NR)iterative method are adopted to establish the corresponding numerical solution iterative *** stability and correctness of the model were verified by a series of numerical simulation *** fluid pressure within the fracture,the fracture length,and the fracture width calculated by the model that regards the poroelasticity parameter as a constant would be larger,longer,and smaller,respectively,compared with those calculated by the model established in this *** effect of certain formation factors and engineering factors on the intersection behavior between hydraulic fracture and natural fracture is investigated based on the established model.

关键词： Hydraulic fracturing Phasefield method Nature fracture Porous medium

Early Cretaceous Thrust and Nappe Tectonics in North Qilian Shan,Northern Tibetan Plateau:Evidence from Field Mapping,Geochronology,and Deep Structural Analysis

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Acta Geologica Sinica(English Edition) 2023年第4期97卷 1058-1077页

作者： HAN Lele DING Weicui CHEN Xuanhua SHAO Zhaogang ZHANG Da xiao yongjun HE Chengguang WANG Zengzhen LI Bing ZHANG Yiping XU Shenglin WANG Ye School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China SinoProbe Center Chinese Academy of Geological Sciences and China Geological SurveyBeijing 100037China Exploration and Development Research Institute Shengli Oilfield CompanySinopecDongyingShandong 257000China Henan Institute of Geological Survey ZhengzhouHenan 450001China

The North Qilian Shan fold and thrust belt,located at the northern Tibetan Plateau and southern margin of the Hexi Corridor,is a key tectonic unit to decode the formation and expansion of the *** studies emphasize the Cenozoic deformation due to the far-field response to the Indo-Asian collision,but the Mesozoic deformations are poorly constrained in this *** conducted detailed field mapping,structural analysis,geochronology,and structural interpretation of deep seismic reflectional profiling and magnetotelluric(MT)sounding,to address the superposed results of the Mesozoic and Cenozoic *** results recognized the North Qilian thrust and nappe system(NQTS),the root and the frontal belt are the North Qilian thrust(NQT),and the Yumu Shan klippe(YK),*** middle belt is located between the NQT and the *** granite zircon U-Pb dating from the middle belt yields an age of ca.415 Ma,which is similar to south *** thrusting displacement is estimated at ca.48 km by structural interpretation of deep *** timing is constrained in the early stage of the Early Cretaceous by the formation of simultaneous growth *** suggest that the NQTS has resulted from the far-field effect of the Lhasa-Qiangtang collision,and the Yumu Shan is uplifted by the superposed Cenozoic deformation.

关键词： geochronology structural analysis seismic reflectional and MT profiling Early Cretaceous North Qilian thrust and nappe system Tibetan Plateau

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光电目标快速捕获系统设计及其实验研究

红外与激光工程 2014年第7期43卷 2312-2317页

作者：肖永军林贻翔湖北工程学院物理与电子信息工程学院湖北孝感432000 武汉大学电子信息学院湖北武汉430079

在空间光通信系统中,终端平台目标光的捕获技术是通信链路建立的一项关键技术。考虑到传统的扫描捕获方式,系统捕获概率低、且耗时长,不利于通讯系统链路建立,因此提出采用GPS进行目标快速定位,搭配水平和俯仰基准传感器,利用GSM网进行... 详细信息

在空间光通信系统中,终端平台目标光的捕获技术是通信链路建立的一项关键技术。考虑到传统的扫描捕获方式,系统捕获概率低、且耗时长,不利于通讯系统链路建立,因此提出采用GPS进行目标快速定位,搭配水平和俯仰基准传感器,利用GSM网进行无线传输,进而辅助APT系统完成目标捕获的终端技术,并建立了目标快速捕获系统。基于该系统开展了多项实验研究,结果表明:对于固定点捕获,概率可达100%;对于模拟目标运动捕获,当模拟转速增大时,捕获平均时间增大,捕获概率降低,但仍然能维持在60%之上;对于低速动态捕获,也能较好地完成系统链路建立需求。

关键词：快速捕获系统捕获概率水平和俯仰基准角

Portable fiber-optic laser-induced breakdown spectroscopy system for the quantitative analysis of minor elements in steel

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Plasma Science and Technology 2019年第3期21卷 46-51页

作者： Qingdong ZENG Fan DENG Zhiheng ZHU Yun TANG Boyun WANG yongjun xiao Liangbin XIONG Huaqing YU Lianbo GUO Xiangyou LI School of Physics and Electronic-information Engineering Hubei Engineering University Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science andTechnology

In this paper, we developed a portable laser-induced breakdown spectroscopy(LIBS) using an optical fiber to deliver laser energy and used it to quantitatively analyze minor elements in *** R^2 factors of calibration curves of elements Mn, Ti, V, and Cr in pig iron were 0.9965,0.9983, 0.9963, and 0.991, respectively, and their root mean square errors of cross-validation were 0.0501, 0.0054, 0.0205, and 0.0245 wt%, respectively. Six test samples were used for the validation of the performance of the calibration curves established by the portable LIBS. The average relative errors of elements Mn, Ti, V, and Cr were 2.5%, 11.7%, 13.0%, and 5.6%,respectively. These results were comparable with most results reported in traditional LIBS in steel or other matrices. However, the portable LIBS is flexible, compact, and robust, providing a promising prospect in industrial application.

关键词： laser-induced breakdown spectroscopy optical fiber quantitative analyses minor element

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基于模糊推理模型的专家系统的研究与应用

计算机工程 2005年第8期31卷 180-181,187页

作者：向艳王洪元江苏工业学院计算机系常州213016

应用模糊推理理论的思想和方法设计和实现了一个燃煤锅炉事故诊断专家系统。本文详细介绍了系统的基本结构、知识表示和推理机制。系统采用模糊关系矩阵和基于框架的模糊推理相结合的推理方法,具有较高的准确性。最后给出了一个应用实例。

关键词：模糊知识库模糊推理模糊专家系统事故诊断

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A simultaneous measurement method of radon and thoron concentrations by using a scintillation cell

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A simultaneous measurement method of radon and thoron concen...

^(220)Rn累积测量的吸收体法及其应用

第三次全国天然辐射照射与控制研讨会

作者： Zhao Guizhi LIU Yanli xiao yongjun xiao Detao School of Nuclear Science and Technology University of South China

In order to determine radon and thoron reference concentrations in the thoron chamber,a simultaneous measurement method of radon and thoron concentrations by using a scintillation cell was *** method realizes discrimination of radon and thoron each other on the difference of their *** consists of three steps:The fast step is that 5 minutes count is done for the determination of thoron concentration after circulating for 5 minutes when the fresh radon and thoron mixed gas flows through scintillation cell with the flow rate of *** second step is that 5 minutes count is done for the determination of radon concentration after waiting for 15 minutes when the pump is *** third step is the calculation of radon and thoron *** are two calculation methods,they are the simultaneous calculation and the correctional calculation of the influence of longer life thoron daughters to radon *** simultaneous measurement of radon and thoron reference concentrations in the thoron chamber can be done in one hour by using the new method.

关键词： radon concentration thoron concentration scintillation cell simultaneous measurement

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核技术 2005年第9期28卷 688-692页

作者：肖德涛赵桂芝肖拥军马光鼐南华大学核科学技术学院衡阳421001

利用220Rn子体ThC’衰变产生的α粒子能量较氡及其子体衰变产生的α粒子能量都高的特点,发展了一种220Rn测量的吸收体方法。本文介绍了加吸收体甄别氡及实现220Rn直接测量的原理、剂量计及其刻度方法。该剂量计测量220Rn暴露量和介质表... 详细信息

利用220Rn子体ThC’衰变产生的α粒子能量较氡及其子体衰变产生的α粒子能量都高的特点,发展了一种220Rn测量的吸收体方法。本文介绍了加吸收体甄别氡及实现220Rn直接测量的原理、剂量计及其刻度方法。该剂量计测量220Rn暴露量和介质表面220Rn析出率的刻度系数分别为R0=0.0767cm–2(kBq·m–3·h)–1和R=0.1300cm–2(kBq·m–3·h)–1。当测量周期7d,所用CR-39本底径迹密度标准差ST=1.6cm–2时,其测220Rn浓度与220Rn析出率的探测下限分别为LLDC=248.4Bq·m–3和LLDE=34.8mBq·m–2·s–1。220Rn累积测量的吸收体法在环境220Rn水平测量、室内220Rn及其子体水平分布测量和介质表面220Rn析出率测量中得到了应用。

关键词： ^220Rn ^220Rn浓度 ^220Rn析出率吸收体

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基于自校正控制的空间光通信精跟踪系统设计

仪器仪表学报 2012年第5期33卷 1181-1186页

作者：左韬黄海波肖永军武汉科技大学信息科学与工程学院武汉430081 湖北汽车工业学院电气与信息工程学院十堰442002 武汉大学电子信息学院武汉430079

针对空间光通信捕获、跟踪、对准(acquisition,tracking,pointing,ATP)系统的精跟踪单元高度复杂、被控对象参数模型难以精确获得、存在慢变化随机干扰的特点,提出采用自校正PID(proportional,integral and derivative)控制来设计精跟... 详细信息

针对空间光通信捕获、跟踪、对准(acquisition,tracking,pointing,ATP)系统的精跟踪单元高度复杂、被控对象参数模型难以精确获得、存在慢变化随机干扰的特点,提出采用自校正PID(proportional,integral and derivative)控制来设计精跟踪的控制器,改善了系统动态性能,增强了系统对不确定因素的适应性。采用遗忘因子递推最小二乘法来进行参数辨识,能在线调整适应对象参数的变化,增强了系统的适应性和鲁棒性。通过仿真验证了算法的控制性能和参数辨识效果,算法的实时性也满足系统设计的要求。给出了ATP精跟踪系统的设计框图,进行了2.3 km的精跟踪实验。实验结果表明精跟踪系统采用自校正PID控制有较好的跟踪精度。

关键词：捕获、跟踪、对准自校正PID 最小二乘辨识精跟踪