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仿生机器蝠鲼动力学建模及试验研究

水下无人系统学报 2024年第1期32卷 40-47页

作者：陈国军林羊龙金俊陈巍杨雪南京工程学院工业中心江苏南京211167

仿生机器蝠鲼独特的胸鳍摆动推进方式更适合风浪干扰环境下长航时水下作业需求,国内外已经开展了相关研究,但目前仿生机器蝠鲼研究中存在驱动能力弱、控制精度低、仿生效果差等问题。文中以蝠鲼为仿生原型,分析其生物学特性和运动机理,... 详细信息

仿生机器蝠鲼独特的胸鳍摆动推进方式更适合风浪干扰环境下长航时水下作业需求,国内外已经开展了相关研究,但目前仿生机器蝠鲼研究中存在驱动能力弱、控制精度低、仿生效果差等问题。文中以蝠鲼为仿生原型,分析其生物学特性和运动机理,构建运动学模型和动力学模型,为仿生机器蝠鲼的系统设计提供了理论依据,设计了机械结构和控制系统,通过模拟波浪干扰环境下的直线前游、原地转弯和动态沉浮等试验,测试了仿生机器蝠鲼在复杂环境下的性能,验证了仿生机器蝠鲼的运动性能和应用前景。

关键词：仿生机器蝠鲼生物学特征运动控制机械结构

Carbon and oxygen isotopic composition of carbonate cements of different phases in terrigenous siliciclastic reservoirs and significance for their origin:A case study from sandstones of the Triassic Yanchang Formation,southwestern Ordos Basin,China

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Chinese Journal Of Geochemistry 2008年第3期27卷 249-256页

作者： WANG Qi ZHUO Xizhun chen guojun LI Xiaoyan Key Laboratory of Gas Geochemistry Institute of Geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 China Graduate University of Chinese Academy of Sciences Beijing 100039 China

Early carbonate cements in the Yanchang Formation sandstones are composed mainly of calcite with relatively heavier carbon isotope(their δ18O values range from-0.3‰--0.1‰) and lighter oxygen isotope(their δ18O values range from-22.1‰--19.5‰).Generally,they are closely related to the direct precipitation of oversaturated calcium carbonate from alkaline lake *** kind of cementation plays an important role in enhancing the anti-compaction ability of sandstones,preserving intragranular volume and providing the mass basis for later disso-lution caused by acidic fluid flow to produce secondary *** calcites are characterized by relatively light carbon isotope with δ13C values ranging from-8.02‰ to-3.23‰,and lighter oxygen isotope with δ18O values ranging from-22.9‰ to-19.7‰,which is obviously related to the decarboxylation of organic matter during the late period of early diagenesis to the early period of late *** the mid-late diagenetic products,ferriferous calcites in the study area are considered as the characteristic authigenic minerals for indicating large-scaled hydrocarbon influx and migration within the clastic *** late ankerite is relatively heavy in carbon isotope with δ13C values ranging from-1.92‰ to-0.84‰,and shows a wide range of variations in oxygen isotopic composition,with δ18O values ranging from-20.5‰ to-12.6‰.They are believed to have nothing to do with decarboxylation,but the previously formed marine carbonate rock fragments may serve as the chief carbon source for their precipitation,and the alkaline diagenetic environment at the mid-late stage would promote this process.

关键词：碳氧同位素合成碳酸盐水泥碳源可分解水池

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倾转旋翼动载荷高阶谐波主动控制

动力学与控制学报 2024年第8期22卷 75-82页

作者：邓旭东郭俊贤陈国军中国直升机设计研究所景德镇333001

针对倾转旋翼动载荷抑制问题,发展了倾转旋翼/弹性机身耦合动力学计算方法,基于广义卡曼滤波方法与最优控制原理,研究了桨距高阶谐波控制(HHC,Higher Harmonic Control)在倾转旋翼减振中的应用,明确了控制流程与控制策略.以XV-15倾转旋... 详细信息

针对倾转旋翼动载荷抑制问题,发展了倾转旋翼/弹性机身耦合动力学计算方法,基于广义卡曼滤波方法与最优控制原理,研究了桨距高阶谐波控制(HHC,Higher Harmonic Control)在倾转旋翼减振中的应用,明确了控制流程与控制策略.以XV-15倾转旋翼机为例,开展了旋翼动载荷高阶谐波控制仿真,结果表明:在传递矩阵在线识别条件下,旋翼桨毂3Ω载荷分量显著降低,降幅最大90%,最小18%.施加高阶桨距控制后,桨尖区域升力随方位角的波动幅度明显降低,表明HHC方法主要通过削减桨叶高频气动力实现旋翼减振.

关键词：倾转旋翼振动载荷高阶谐波控制系统识别

准噶尔盆地南缘地区含膏质地层岩性特征及测井识别方法

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吉林大学学报（地球科学版） 2024年第4期54卷 1419-1431页

作者：庞志超肖华毛晨飞陈国军梁琬坤高明张啸中国石油新疆油田分公司勘探开发研究院乌鲁木齐830013 中国石油集团测井有限公司地质研究院西安710077

近来年准噶尔盆地南缘地区中生界碎屑岩油气藏屡获突破,成为盆地重要的勘探领域。中生界普遍含有石膏,因此含膏质地层的岩性优选是储层评价的关键。为提高该区岩性识别的精度,并对含膏质地层储层曲线进行校正,本文基于岩石物理实验,分... 详细信息

近来年准噶尔盆地南缘地区中生界碎屑岩油气藏屡获突破,成为盆地重要的勘探领域。中生界普遍含有石膏,因此含膏质地层的岩性优选是储层评价的关键。为提高该区岩性识别的精度,并对含膏质地层储层曲线进行校正,本文基于岩石物理实验,分析不同岩性的测井曲线响应特征,对比发现含膏质地层导致补偿中子值降低、声波时差减小、电阻率升高;对含膏质岩性进行了测井识别,并提出了蒙特卡罗数值模拟方法,对膏质砂岩进行不同孔隙度、不同膏质体积分数条件下的补偿中子测井地层模拟,建立了补偿中子孔隙度曲线校正模型,最终实现了岩性的精细划分。解释的岩性与薄片分析对比符合率达到88.2%。

关键词：准噶尔盆地南缘中生界含膏质地层蒙特卡罗数值模拟岩性识别测井

Quantificational Etching of AAO Template

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Journal of Materials Science & Technology 2007年第3期23卷 427-429页

作者： guojun SONG Dong chen Zhi PENG Xilin SHE Jianjiang LI Ping HAN Institute of Polymer Materials Qingdao University Qingdao 266071 China

Ni nanowires were prepared by electrodeposition in porous anodized aluminum oxide （AAO） template from a composite electrolyte solution. Well-ordered Ni nanowire arrays with controllable length were then made by the partial removal of AAO using a mixture of phosphoric acid and chromic acid （6 wt pct H3PO4：1.8 wt pct H3CrO4）. The images of Ni nanowire arrays were studied by scanning electron microscopy （SEM） to determine the relationship between etching time and the length of Ni nanowire arrays. The results indicate that the length of nanowires exposed from the template can be accurately controlled by controlling etching time.

关键词： Nanowire arrays Anodized aluminum oxide (AAO) Controllable etching

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复杂盐膏层定向井固井工艺探讨

化工管理 2024年第16期 159-162页

作者：李晓陈国军陈治中刘军波中海油田服务股份有限公司天津300459

伊拉克某油田盐膏层定向井的9-5/8″套管固井面临诸多技术难题:定向井段复合盐膏层段长且蠕变压力高,漏失压力当量密度和钻井液密度仅相差0.1 g/cm3左右,极易发生井漏;该井段下部压力系数高达2.25的高压盐水固井期间外窜导致固井质量差... 详细信息

伊拉克某油田盐膏层定向井的9-5/8″套管固井面临诸多技术难题:定向井段复合盐膏层段长且蠕变压力高,漏失压力当量密度和钻井液密度仅相差0.1 g/cm3左右,极易发生井漏;该井段下部压力系数高达2.25的高压盐水固井期间外窜导致固井质量差、溢流频发及技术套管环空带压;高密度水泥浆配置难度高,可泵性差;固井前循环排量受限,清洗效果差;盐膏层在定向段暴露面积增大,加大了清洗难度;高密度饱和盐水钻井液和高压盐水氯根含量高,与水泥浆接触后,水泥浆存在超缓凝现象。现场通过选用合适的水泥浆体系及加重材料,并采用了双压稳固井技术和其他一系列技术措施,保障了固井作业的安全顺利完工,且固井质量良好。本井的固井作业经验可以为M油田复合盐膏层地层定向井固井及其他类似井的作业提供参考。

关键词：盐膏层井漏高压盐水抗污染性水泥浆体系技术措施

Chemical kinetics evaluation and its application of natural gas generation derived from the Yacheng Formation in the deep-water area of the Qiongdongnan Basin,China

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Acta Oceanologica Sinica 2018年第1期37卷 50-59页

作者： SU Long ZHANG Dongwei YANG Haizhang chen Ying chen guojun ZHENG Jianjing XU Yongchang Key Laboratory of Petroleum Resources Gansu Province/Key Laboratory of Petroleum Resources Research Institute of Geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 China University of Chinese Academy of Sciences Beijing 100049 China Research Center of China National Offshore Oil Corporation Beijing 100027 China

The natural gas generation process is simulated by heating source rocks of the Yacheng Formation, including the onshore-offshore mudstone and coal with kerogens of Type II2-III in the Qiongdongnan Basin. The aim is to quantify the natural gas generation from the Yacheng Formation and to evaluate the geological prediction and kinetic parameters using an optimization procedure based on the basin modeling of the shallow-water area. For this, the hydrocarbons produced have been grouped into four classes（C1, C2, C3 and C4-6）. The results show that the onset temperature of methane generation is predicted to occur at 110℃ during the thermal history of sediments since 5.3 Ma by using data extrapolation. The hydrocarbon potential for ethane, propane and heavy gaseous hydrocarbons（C4-6） is found to be almost exhausted at geological temperature of 200℃ when the transformation ratio（TR） is over 0.8, but for which methane is determined to be about 0.5 in the shallow-water area. In contrast, the end temperature of the methane generation in the deep-water area was over 300℃ with a TR over 0.8. It plays an important role in the natural gas exploration of the deep-water basin and other basins in the broad ocean areas of China. Therefore, the natural gas exploration for the deep-water area in the Qiongdongnan Basin shall first aim at the structural traps in the Ledong, Lingshui and Beijiao sags, and in the forward direction of the structure around the sags, and then gradually develop toward the non-structural trap in the deep-water area basin of the broad ocean areas of China.

关键词： deep—water area geological prediction natural gas Yacheng Formation evaluation Qiongdongnan Basin

Greenhouse gas emissions from oilfield-produced water in Shengli Oilfield,Eastern China

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Journal of Environmental Sciences 2016年第8期28卷 101-108页

作者： Shuang Yang Wei Yang guojun chen Xuan Fang chengfu Lv Jiaai Zhong Lianhua Xue Key Laboratory of Petroleum Resources Gansu Province/Key Laboratory of Petroleum Resources Research Institute of Geology and Geophysics Chinese Academy of Sciences University of Chinese Academy of Sciences

Greenhouse gas（GHG） emissions from oil and gas systems are an important component of the GHG emission inventory. To assess the carbon emissions from oilfield-produced water under atmospheric conditions correctly, in situ detection and simulation experiments were developed to study the natural release of GHG into the atmosphere in the Shengli Oilfield,the second largest oilfield in China. The results showed that methane（CH4） and carbon dioxide（CO2） were the primary gases released naturally from the oilfield-produced *** atmospheric temperature and release time played important roles in determining the CH4 and CO2emissions under atmospheric conditions. Higher temperatures enhanced the carbon emissions. The emissions of both CH4 and CO2from oilfield-produced water were highest at 27°C and lowest at 3°C. The bulk of CH4 and CO2was released from the oilfield-produced water during the first release period, 0–2 hr, for each temperature, with a maximum average emission rate of 0.415 g CH4/（m3·hr） and 3.934 g CO2/（m3·hr）, respectively. Then the carbon emissions at other time periods gradually decreased with the extension of time. The higher solubility of CO2 in water than CH4 results in a higher emission rate of CH4 than CO2over the same release duration. The simulation proved that oilfield-produced water is one of the potential emission sources that should be given great attention in oil and gas systems.

关键词： Methane Carbon dioxide Oilfield-produced water Atmospheric conditions

海上浮式风电系统的批钻链式锚群设计方案和施工技术

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天津科技 2024年第5期51卷 36-39页

作者：杨志方如萱陈国军王飞中海油田服务股份有限公司河北三河065201 中海油能源发展装备技术有限公司天津300452

随着风电安装技术、海洋钻井成孔技术和工艺的进步,海上风电系统逐渐向远海、深海领域延伸,当水深超过50 m,甚至100 m后,考虑到安全性和经济性,海上风电基础由桩基式逐步转向漂浮式。现有大孔径嵌岩成孔、锤桩的桩基式底座已不能实现浮... 详细信息

随着风电安装技术、海洋钻井成孔技术和工艺的进步,海上风电系统逐渐向远海、深海领域延伸,当水深超过50 m,甚至100 m后,考虑到安全性和经济性,海上风电基础由桩基式逐步转向漂浮式。现有大孔径嵌岩成孔、锤桩的桩基式底座已不能实现浮式风电系统锚定,基于此,利用海洋批钻钻井成孔、固井技术与工艺,采用批钻链式锚群,实现海上浮式风电系统的链式锚定。

关键词：批钻链式锚群浮式风电