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形状记忆筛管自充填防砂完井技术 被引量:11
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作者 段友智 艾爽 +1 位作者 刘欢乐 岳慧 《石油钻探技术》 CAS CSCD 北大核心 2019年第5期86-90,共5页
针对独立筛管防砂完井无法支撑井壁、有效期短的问题,以及砾石充填防砂完井工艺复杂、易砂堵、费用高的不足,提出了利用一趟管柱实现长裸眼环空充填的形状记忆筛管完井技术。在优化设计形状记忆筛管机械结构的基础上,研究了形状记忆筛... 针对独立筛管防砂完井无法支撑井壁、有效期短的问题,以及砾石充填防砂完井工艺复杂、易砂堵、费用高的不足,提出了利用一趟管柱实现长裸眼环空充填的形状记忆筛管完井技术。在优化设计形状记忆筛管机械结构的基础上,研究了形状记忆筛管生产工艺,研制了形状记忆防砂筛管,并对其性能进行了试验评价,形成了形状记忆筛管自充填防砂完井工艺。现场试验结果表明,形状记忆防砂筛管膨胀性能优越、能完全充填环空和炮眼,且膨胀后的渗透性好、挡砂精度高。形状记忆筛管自充填防砂完井技术施工工艺简单、能适应不规则井眼,具有很好的推广应用价值。 展开更多
关键词 完井 防砂 筛管 形状记忆聚合物 自充填 膨胀试验
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形状记忆筛管自充填防砂完井技术要点研究
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作者 张利平 《石油石化物资采购》 2020年第36期67-67,共1页
本文针对防砂完井中所涉及的筛管变形损坏要点进行最新形状记忆筛管自充填防砂完井工艺概述,以工程技术要点为出发,将形状记忆筛管性能评价与加工过程中的细节进行分段展示,为现场一线工作人员提供技术支撑。
关键词 形状记忆 筛管 自充填 防砂 完井
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连续梁0#块免振捣自充填混凝土应用技术
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作者 梅达 《工程技术研究》 2021年第12期92-93,共2页
连续梁桥在铁路线路中的占比逐渐增加,但0#块的混凝土存在振捣不密实的情况,会影响施工进度和质量。当前,免振捣自充填混凝土成功运用于无砟轨道Ⅲ型板中,且取得了良好的经济效益。文章基于免振捣自充填混凝土的配合比设计方法、拌和物... 连续梁桥在铁路线路中的占比逐渐增加,但0#块的混凝土存在振捣不密实的情况,会影响施工进度和质量。当前,免振捣自充填混凝土成功运用于无砟轨道Ⅲ型板中,且取得了良好的经济效益。文章基于免振捣自充填混凝土的配合比设计方法、拌和物工作性能及硬化性能评价指标,对免振捣自充填混凝土运用于连续梁0#块的可行性进行了探讨。 展开更多
关键词 连续梁桥 免振捣自充填混凝土 0#块混凝土
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形状记忆充填层膨胀后的性能测试实验 被引量:1
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作者 段友智 刘欢乐 +2 位作者 艾爽 秦星 岳慧 《大庆石油地质与开发》 CAS CSCD 北大核心 2022年第1期84-90,共7页
为研究形状记忆筛管在出砂井井底发生膨胀后的工作性能,对膨胀后的形状记忆充填层进行取样,通过实验分析其性能特征。结果表明:采用自主研发的聚合物复合材料制备的形状记忆充填层的岩心样品的力学性能符合温敏型材料的变化规律;不同位... 为研究形状记忆筛管在出砂井井底发生膨胀后的工作性能,对膨胀后的形状记忆充填层进行取样,通过实验分析其性能特征。结果表明:采用自主研发的聚合物复合材料制备的形状记忆充填层的岩心样品的力学性能符合温敏型材料的变化规律;不同位置的3块岩心的绝对渗透率基本相同,形状记忆充填层的均质性好;岩心的压差变化小,形状记忆充填层的抗堵塞性能好;该形状记忆充填层具有良好的渗透性能、挡砂性能和耐酸碱性能,能够满足指定出砂井的生产要求。形状记忆充填层膨胀后的性能测试实验能够直观地分析形状记忆筛管膨胀后的工作性能,为环空自充填防砂完井技术的材料选择与现场应用提供实验方法和依据。 展开更多
关键词 形状记忆 形状记忆筛管 环空自充填防砂完井技术 聚合物复合材料 抗堵塞性能 渗透性能 挡砂性能 耐酸碱性能
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高流动混凝土基本性能及施土性能 被引量:1
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作者 徐新生 初凤荣 +1 位作者 黄博升 肖丽萍 《粉煤灰综合利用》 CAS 2001年第6期41-43,共3页
高流动混凝土是指用于混凝土结构中 ,具有高流变性和抗分离性 ,不需振捣进行自充填的混凝土。高流动混凝土是以提高混凝土结构物的耐久性、可靠性和适应 2 1世纪新的施工技术为目的而提出的 ,是一种新概念混凝土。本文从基本性能、施工... 高流动混凝土是指用于混凝土结构中 ,具有高流变性和抗分离性 ,不需振捣进行自充填的混凝土。高流动混凝土是以提高混凝土结构物的耐久性、可靠性和适应 2 1世纪新的施工技术为目的而提出的 ,是一种新概念混凝土。本文从基本性能、施工技术。 展开更多
关键词 高流动混凝土 抗分离性 自充填 粉煤灰 矿渣
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An automatical infill shot method for uniform imaging of target layer 被引量:4
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作者 赵虎 尹成 +3 位作者 侯朋军 蒲龙川 黄勇 苑国辉 《Applied Geophysics》 SCIE CSCD 2013年第2期222-228,237,共8页
Seismic imaging quality is critical to describing reservoirs. There are many methods that can improve imaging quality; some rely on advanced processing means, whereas others rely on changing the field acquisition meth... Seismic imaging quality is critical to describing reservoirs. There are many methods that can improve imaging quality; some rely on advanced processing means, whereas others rely on changing the field acquisition methods. However, most of the acquisition methods focus on improving imaging by using infill shots without considering the target-layer illumination energy. Moreover, total infill shooting greatly increases the acquisition cost. In this paper, we present a new method for maximizing the contribution to the target shadow area illumination by automatic local infill shooting. Thus, we designed 2D and 3D models and obtained the depth migration section by forward modeling, infill shots, depth migration, etc. The model results also show that by choosing the most appropriate number of shot points, we can enhance the shadow area energy and improve the target-layer imaging quality at low cost. 展开更多
关键词 Infill shooting forward modeling target-layer imaging survey design
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Self-adaptively inpainting gaps between electrical image pads according to the image fabric 被引量:2
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作者 Zhang Zhao-hui Deng Jing +1 位作者 Chen Hua-yong Yu Hong-guo 《Applied Geophysics》 SCIE CSCD 2020年第5期823-833,903,904,共13页
Images created from measurements made by wireline microresistivity imaging tools have longitudinal gaps when the well circumference exceeds the total width of the pad-mounted electrode arrays.The gap size depends on t... Images created from measurements made by wireline microresistivity imaging tools have longitudinal gaps when the well circumference exceeds the total width of the pad-mounted electrode arrays.The gap size depends on the tool design and borehole size,and the null data in these gaps negatively aff ect the quantitative evaluation of reservoirs.Images with linear and texture features obtained from microresistivity image logs have distinct dual fabric features because of logging principles and various geological phenomena.Linear image features usually include phenomena such as fractures,bedding,and unconformities.Contrarily,texture-based image features usually indicate phenomena such as vugs and rock matrices.According to the characteristics of this fabric-based binary image structure and guided by the practice of geological interpretation,an adaptive inpainting method for the blank gaps in microresistivity image logs is proposed.For images with linear features,a sinusoidal tracking inpainting algorithm based on an evaluation of the validity and continuity of pixel sets is used.Contrarily,the most similar target transplantation algorithm is applied to texture-based images.The results obtained for measured electrical imaging data showed that the full borehole image obtained by the proposed method,whether it was a linear structural image refl ecting fracture and bedding or texture-based image refl ecting the matrix and pore of rock,had substantially good inpainting quality with enhanced visual connectivity.The proposed method was eff ective for inpainting electrical image logs with large gaps and high angle fractures with high heterogeneity.Moreover,ladder and block artifacts were rare,and the inpainting marks were not obvious.In addition,detailed full borehole images obtained by the proposed method will provide an essential basis for interpreting geological phenomena and reservoir parameters. 展开更多
关键词 electrical image logging binary structure image inpainting self-adaptively fabric guiding
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Stability study on naturally filling body in gob-side entry retaining 被引量:10
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作者 Zhou Baojing Xu Jinhai +1 位作者 Zhao Maosen Zeng Qinglin 《International Journal of Mining Science and Technology》 SCIE EI 2012年第3期423-427,共5页
In the construction of the filling gob-side entry retaining in a lane, we utilize the self-slide natural phenomenon of a falling gangue in an inclined coal seam goaf. First, we put the falling gangue of goal above the... In the construction of the filling gob-side entry retaining in a lane, we utilize the self-slide natural phenomenon of a falling gangue in an inclined coal seam goaf. First, we put the falling gangue of goal above the laneway and made it the main filling material by adopting the measurement of flexible supporting system combined with those of rigid supporting system. Then we made the filling material gunited and solidified to maintain the filling goal of the gob-side entry retaining beside the lane. Considering the law of energy conservation and law of pressure distribution for retaining the active and Static soil of the wall, we analyzed the reliability of a gangue blocking facilities and the stability of the filling mate- rial in the lane. We analyze the figures to see the stability. The result shows that the gangue block sup- porting system is reliable, and has been successfully practically applied. 展开更多
关键词 Failing gangueNatural-fillingGob-side entry retainingStability
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Bob Gysin等设计苏黎世的住宅兼工作室
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《现代装饰》 2012年第2期147-147,共1页
在这座住宅楼兼工作室里,材料和底层功能的运用与上层楼截然相反。底层的大块玻璃后面就是工作室,而上层楼则能毫无遮挡地看到街道和庭院的景色。两扇超大的窗户凸显出双层高度楼层的空间。单体立面采用自充填混凝土,形成锤凿式的表... 在这座住宅楼兼工作室里,材料和底层功能的运用与上层楼截然相反。底层的大块玻璃后面就是工作室,而上层楼则能毫无遮挡地看到街道和庭院的景色。两扇超大的窗户凸显出双层高度楼层的空间。单体立面采用自充填混凝土,形成锤凿式的表层效果。 展开更多
关键词 工作室 住宅楼 BOB 苏黎世 设计 自充填混凝土 上层 底层
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Noise reduction in cavity flow by addition of porous media 被引量:2
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作者 Ruqian Guo Xiaopeng Chen +2 位作者 Zhenhua Wan Haibao Hu Shuai Cui 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2022年第2期68-80,I0003,共14页
Self-sustained oscillation and the sound radiation of flow over an open cavity is of great importance in nature and industry.Influences of filled porous media in the cavity are investigated numerically by using a latt... Self-sustained oscillation and the sound radiation of flow over an open cavity is of great importance in nature and industry.Influences of filled porous media in the cavity are investigated numerically by using a lattice Boltzmann method in two-dimensional space.It is shown that the outcomes of the porous patch depend on the location of the patch and the original flow mode,namely shear layer(SL)and wake mode(WM).For SL flow,the porous patch either damps the vortical flow or suppresses the generation of the secondary vortex sheet on the wall.The later effect destabilizes the SL.Consequently,the radiated sound is reduced as the patch is on the trailing edge,and increased with porous patch on the floor,respectively.For flow in WM,a transition from WM to SL mode is found when the porous patch is set either on the floor or behind the leading wall.In the cases,the recirculating flow on large scale is blocked significantly due to the porous patch,therefore,the WM flow is not sustained.On the other hand,the porous patch on the trailing edge slightly weakens the sound due to dissipation.The study shows that assembling of porous media in the flow field decreases the radiated sound level only if it is done carefully. 展开更多
关键词 Cavity flow Lattice Boltzmann method Porous media AEROACOUSTIC VORTEX
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Realistic flat-band model based on degenerate p-orbitals in two-dimensional ionic materials 被引量:1
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作者 Jiang Zeng Ming Lu +2 位作者 Haiwen Liu Hua Jiang X.C.Xie 《Science Bulletin》 SCIE EI CSCD 2021年第8期765-770,M0003,共7页
Though several theoretical models have been proposed to design electronic flat-bands, the definite experimental realization in two-dimensional atomic crystal is still lacking. Here we propose a novel and realistic fla... Though several theoretical models have been proposed to design electronic flat-bands, the definite experimental realization in two-dimensional atomic crystal is still lacking. Here we propose a novel and realistic flat-band model based on threefold degenerate p-orbitals in two-dimensional ionic materials. Our theoretical analysis and first-principles calculations show that the proposed flat-band can be realized in 1 T layered materials of alkali-metal chalogenides and metal-carbon group compounds. Some of the former are theoretically predicted to be stable as layered materials(e.g., K2 S), and some of the latter have been experimentally fabricated in previous works(e.g., Gd2 CCl2). More interestingly, the flat-band is partially filled in the heterostructure of a K2 S monolayer and graphene layers. The spin polarized nearly flatband can be realized in the ferromagnetic state of a Gd2 CCl2 monolayer, which has been fabricated in experiments. Our theoretical model together with the material predictions provide a realistic platform for the study of flat-bands and related exotic quantum phases. 展开更多
关键词 Flat-band Degenerate orbitals Material realization 1T structure Partially filled
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Topological Insulators in α-Graphyne
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作者 王国祥 侯净敏 《Communications in Theoretical Physics》 SCIE CAS CSCD 2013年第4期489-493,共5页
In this paper, we investigate topological phases of a-graphyne with tight-binding method. By calculating the topological invariant Z2 and the edge states, we identify topological insulators. We present the phase diagr... In this paper, we investigate topological phases of a-graphyne with tight-binding method. By calculating the topological invariant Z2 and the edge states, we identify topological insulators. We present the phase diagrams of a-graphyne with different filling fractions as a function of spin-orbit interaction and the nearest-neighbor hopping energy. We find there exist topological insulators in a-graphyne. We analyze and discuss the characteristics of topological phases of a-graphyne. 展开更多
关键词 α-graphyne topological insulator Z2 invariant
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