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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1335-1347页

作者： TIAN Changjin wang youzhi QIU Kai YANG Qilin School of Civil Engineering Shandong UniversityJinan 250002China China Construction Infrastructure Co. LtdBeijing 100089China School of Transportation Science and Engineering Harbin Institute of TechnologyHarbin 150090China

To investigate the assumptions proposed in this paper,the evolution law governing the strength and expansion performance of MgO and nano-MgO micro-expansive concrete in the environment of mineral powder was firstly observed in this ***,SEM,XRD,and TG-DSC microscopic tests were conducted to reveal the effects of the active mineral-powder admixture on the hydration degree and expansion performance of MgO and nano-MgO in *** experimental results successfully verified our hypothesis,which indicated that the expansion performance of macro-MgO and nano-MgO was indeed depressed by the addition of active mineral power admixtures,even though the mechanical property of concrete composites was effectively ***,the hydration test also demonstrated the negative interference on the mineral powders,which was induced by the expansion *** is found the amounts of hydrates tend to decrease because the mineral powder ratio reaches and exceeds 40%.Moreover,it is also concluded the effect of expansion agents is governed by the alkalinity cement paste,especially for the *** other words,the expansion performance of nano-MgO will vary more obviously with the hydration process,than *** results of this study provide that effective experimental and theoretical data support the hydration-inhibition mechanism of magnesium expansive agents.

关键词： MgO Nano-MgO mineral powders high-performance concrete expansive agents microstructures

Characteristics of Coal Reservoir Pore Structure and Its Diffusion Mode in Huhehu Depression

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 457-459页

作者： wang youzhi Exploration and Development Research Institute of Daqing Oilfield Company Ltd.

1 Introduction The importance of reservoir has been widely recognized in the field of unconventional oil and gas r, esource（Zou Caineng et al., 2012）. The pore structure is the core problem of coal reservoir. One side, the pore structure influenced the adsorption ability of the coal pore structure; The other hand, the pore structure determines the coalbed methane output mode（Zou Caineng et al., 2013）. Hou QuanLin（2012） thinked that different deformation mechanisms, such as composition of the pore system and structure of coal are different, mainly in microstructure and pore structure and coal and chemical structure.

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Porosity Characteristics of Tectonic Coal and Its Controlling Factors

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 460-462页

作者： wang youzhi wang Shihui Exploration and Development Research Institute of Daqing Oilfield Company Ltd.

1 Introduction The coal, as a special reservoir, has a dual accumulating system of matrix pore and fracture. The pore is the main reservoir space of coalbed methane （CBM） in coal. Generally, pore structure is very complicated and irregularly so that it is hard to be described in the traditional geometry. The fractal theory plays an important role in describing the porous media of the seepage system in recent years. The studies by Pfeifer, Katz and Kroch show the pore distribution in such reservoirs as coal, sandstone, shale and carbonatite is according with the fractal theory.

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Main Controlling Factors of CMB Reservoir in Northeast China:Taking Jixi Basin as An Example

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 465-466页

作者： XU Chengwu wang Shihui TAN Baode wang youzhi LI Jia GUO Junwei Daqing oilfield exploration and Development Institute Daqing Heilongjiang 163712 Northeast Petroleum University Daqing City Heilongjiang Province 163318

1 Introduction The coal bearing basin in the east of Northeast China is many, and the little or middle fault depression of low or middle rank coal bearing basin is the main, including Jixi, Boli, Shuangyashan, Hegang, Hulin and other basins （TANG Shuheng, 2000）. Several coal bearing basins have seen well show of CBM（Tablel）. But the research of the coal bed gas system is not carried out at present.

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Study on natural gas enrichment model of tight sandstone reservoirs in Xu2 section of Yingshan area

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Study on natural gas enrichment model of tight sandstone res...

Heterogeneity Characteristics of Tight Reservoir and Gas Accaccumulation in Member 2 of Xujiahe Formation, Yingshan area, Northeast Sichuan

2023年中国地球科学联合学术年会

作者： wang youzhi Exploration and Development Research Institute of Daqing Oilfield Co Ltd

The prospect of tight gas exploration in the Xujiahe Formation in the Sichuan Basin is promising, but the lack of understanding of the gas-water relationship and the enrichment law is the limited bottleneck for the beneficial development of tight gas in the Xujiahe Formation. Comprehensively utilizing the data from well logging and experiments in the Yingshan area, based on the theory of high-resolution sequence stratigraphy, we re-conceptualize the mechanism of tight gas formation in the Yingshan tectonics. The results show that through the identification of different levels of stratigraphic interfaces and lake flooding surfaces, the tight sandstone reservoirs of the Xu2 section in the Yingshan area can be categorized into one long term datum cyclone, and another six medium term datum cyclones, from bottom to top, as MSCl-MSC6. Among them, MSCl-MSC4 lithological assemblage pattern is regressive-accumulative, and MSC5-MSC6 develops intrusive-accumulative lithological assemblage. The rock combination and compositional characteristics of the ascending gyratory rocks have better compressive resistance, better physical conditions, and after tectonic adjustment, the gas-water dissimilarity is complete, and tectonic oil reservoirs are developed. The downward spiral sandstone reservoir of Xujiahe in Yingshan area has experienced relatively strong mechanical compaction, which seriously damaged the primary porosity of the reservoir, resulting in serious tightening of the tight sandstone reservoir in the work area, and the period of oil and gas injection into the reservoir is coupled with the tightening evolution of the reservoir. It has the characteristics of tightening-while-forming, which makes the descending cyclone as a whole gas-bearing and enriched in scale, and it is a favorable target for the future reserve upgrade of the Xu2 section of the Yingshan tectonics of the Xujiahe Formation. The aim is to provide an important reference and basis for the exploration of tight

关键词： xujiahe formation tight sandstone reservoirs Xu2 section enrichment model

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Heterogeneity Characteristics of Tight Reservoir and Gas Acc...

基于多目标规划模型的黑河中游绿洲用水结构优化配置

2020年中国地球科学联合学术年会

作者： wang youzhi Exploration and Development Research Institute of Daqing Oilfield Company Ltd

Tight gas reservoirs are widely developed in the Xujiahe Formation of the Sichuan Basin. Due to the strong heterogeneity of the reservoir, the gas-water relationship is complicated and the exploitation results are poor. The characteristics of the tight reservoir are systematically analysised in the Member2 of Xujiahe Formation of Yingshan area by thin sections and argon ion polishing scanning electron microscopy techniques. In combination with with X-ray diffraction, stable carbon and oxygen isotope, trace elements, the formation mechanism of heterogeneity of tight reservoir is analyzed and the matching relationship between gas accumulation and development of tight reservoir is discussed. The results show that the reservoirs of Member2 of Xujiahe Formation in Yingshan area are mainly composed of feldspar quartz sandstone, lithic feldspar sandstone, and feldspar lithic sandstone. The types of storage space are mainly intergranular pores and intragranular dissolved pores, with an average porosity of 9.47% and an average permeability of 0.14×10-3μm. They are low-porosity and low-permeability reservoirs. The study area experienced relatively strong mechanical compaction, which severely damaged the primary porosity of the reservoir, with an average decrease of 15.27%, which is the main reason for the overall densification of the Member2 of Xujiahe Formation. However, the change of the vertical physical properties of the Member2 of Xujiahe Formation is closely related to the calcite metasomatism and cementation. The tight layer usually appears in the middle of the thick sandstone, with a thickness of 2 to 4 m and a certain distribution range in the transverse direction. The cement and metabolites of calcite mainly form the Middle and Late Cretaceous. At this time, the formation temperature is 120～140℃, and the source rocks are at the peak period of hydrocarbon generation. Thus the high carbonate mineral composition in the source rock of Yingshan area, the organic acid-ric

关键词： tight reservoir heterogeneity diagenesis Xujiahe Formation Yingshan area

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农业机械学报 2020年第2期51卷 299-307页

作者：王友芝郭萍中国农业大学中国农业水问题研究中心

针对水资源优化配置过程中存在的缺水风险、经济效益、配水公平性等问题,构建了确定性多目标规划模型,该模型能够兼顾配水风险、效益及公平性,实现多目标之间的协调,且能够反映水资源配置系统中存在的不确定性。在确定性多目标规划的基... 详细信息

针对水资源优化配置过程中存在的缺水风险、经济效益、配水公平性等问题,构建了确定性多目标规划模型,该模型能够兼顾配水风险、效益及公平性,实现多目标之间的协调,且能够反映水资源配置系统中存在的不确定性。在确定性多目标规划的基础上,构建了不确定条件下基于模糊Me测度的多目标规划模型。另外,根据不同的乐观-悲观因子,将Me测度转换为必要性测度、可信性测度和可能性测度。将所构建的两个模型应用于甘州区、临泽县和高台县的农业、工业、生活、生态部门的配水中,结果表明,两个模型均适用于该地区的水资源配置,不确定性条件下基于Me测度的多目标规划模型相较于确定性模型具有更高的鲁棒性。必要性测度约束的配水量最小,可信性测度约束的配水量居中,可能性测度约束的配水量最大。结构性缺水风险与配水量成反比,经济效益与配水量成正比,在当前可利用水量条件下,GINI系数与配水量成正比。因此,必要性测度更适用于最小化目标值的情况,可能性测度更适合于最大化目标值的情况,可信性测度的结果则是两者的折衷。在3种置信条件约束下,配水量、结构性缺水风险、经济效益随着测度水平的增加而减少,GINI系数随着测度水平的增加而增加。因此,决策者可以基于多目标规划方法,通过选择合适的乐观-悲观因子和测度水平优选最佳配水方案和目标值。

关键词：水资源优化 Me测度多目标规划模型结构性缺水风险 GINI系数

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珲春盆地八连城矿区煤岩孔隙分形特征

西南石油大学学报（自然科学版） 2020年第1期42卷 57-68页

作者：王有智中国石油大庆油田有限责任公司勘探开发研究院

煤岩孔隙结构特征是评价煤层储集能力和选层压裂的重要参数。综合应用低温氮吸附方法、核磁共振技术和氩离子抛光成像等方法,利用分形理论定量表征孔隙的非均质性,并探讨分形维数的影响因素。结果表明,八连城矿区煤岩有机质孔主要为植... 详细信息

煤岩孔隙结构特征是评价煤层储集能力和选层压裂的重要参数。综合应用低温氮吸附方法、核磁共振技术和氩离子抛光成像等方法,利用分形理论定量表征孔隙的非均质性,并探讨分形维数的影响因素。结果表明,八连城矿区煤岩有机质孔主要为植物组织孔、粒间孔和气孔,矿物质孔为溶蚀孔和黏土矿物孔。Ⅰ类曲线显示煤岩发育狭缝状孔和楔形孔。Ⅱ类曲线表明煤岩瓶型孔发育。核磁共振双峰型T2谱表明吸附孔较为发育,连通性差。三峰型显示渗流孔和裂隙发育,孔渗条件好。孔隙直径在2~100 nm时,水分含量和比表面积与D1表现为正相关关系。D2与灰分含量、平均孔径呈正相关和负相关。孔隙直径在0.1~10.0μm时,核磁共振法获得DN1与吸附孔表面积呈正相关,DN2与渗流孔的孔体积呈正相关;DM和溶蚀孔分形维数Dc,分别受到黏土矿物和长石含量的控制。因此,氮吸附Ⅰ型曲线煤层和三峰型核磁T2图谱煤层利于煤层气的开发。

关键词：孔隙结构分形维数氮气吸附核磁共振氩离子抛光珲春盆地

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发动机连杆的瞬态响应计算

内燃机学报 1998年第3期16卷 354-359页

作者：王有智贺红兵东风汽车工程研究院计算机部

本文分析了发动机连杆在工作过程中的受力状况，应用ＭＳＣ／ＮＡＳＴＲＡＮ软件计算了发动机连杆在一个运动周期内受随时间变化的气缸爆发压力、往复惯性力和固定不变的螺栓预紧力时的响应应力，给出了连杆上５个代表性应力区的应力－... 详细信息

本文分析了发动机连杆在工作过程中的受力状况，应用ＭＳＣ／ＮＡＳＴＲＡＮ软件计算了发动机连杆在一个运动周期内受随时间变化的气缸爆发压力、往复惯性力和固定不变的螺栓预紧力时的响应应力，给出了连杆上５个代表性应力区的应力－时间变化曲线和连杆在工作过程中可能受破坏的危险区域，并根据疲劳寿命与应力载荷之间的关系，对危险区域计算出连杆在９５％存活率下的使用寿命大于１０１０次。该连杆满足使用寿命要求，通过对连杆的瞬态响应计算，为设计出满足强度、刚度及轻量化要求的连杆提供了参考依据。

关键词：连杆瞬态响应应力有限元发动机

Enrichment regularity of tight sandstone reservoirs in Jurassic Shaximiao formation in Yingshan area, Northeast Sichuan

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Enrichment regularity of tight sandstone reservoirs in Juras...