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利用静温梯度变化规律快速准确查找套损段 被引量:8
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作者 王陶 陈军 +3 位作者 荣宁 王景 于治水 叶翔 《新疆石油天然气》 CAS 2006年第1期45-49,共5页
套管损坏是油气井生产中最常见的故障之一,油气井套管损坏后,轻者影响油气井正常生产,重者直接导致油气井过早报废。套管损坏后,地下异层水常常通过渗漏点灌入生产井筒,增大生产液柱回压,致使油气井减产,甚至停喷。如何有效地查找损坏... 套管损坏是油气井生产中最常见的故障之一,油气井套管损坏后,轻者影响油气井正常生产,重者直接导致油气井过早报废。套管损坏后,地下异层水常常通过渗漏点灌入生产井筒,增大生产液柱回压,致使油气井减产,甚至停喷。如何有效地查找损坏套管的渗漏点,就成为修井堵漏的先决条件,塔里木H油田近年来套损井逐渐增多,油井大幅减产。我们在实践中应用静温梯度法准确地定位了套损井渗漏点,并以此指导油井井下修井作业,成功地解决套损导致油井停喷难题,使油井恢复生产,对类似油田的套损找漏堵漏具有指导意义。 展开更多
关键词 套管损坏 停喷 静温梯度 静温异常 找漏
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试油静温数据的精度及其影响因素分析——以东营凹陷为例 被引量:2
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作者 汪旭东 查明 操应长 《石油天然气学报》 CAS CSCD 北大核心 2010年第6期190-194,共5页
试油静温数据是含油气区地温场研究的主要依据之一,但有些油层的静温数据不准确。选取了东营凹陷150口井的静温数据进行精度分析,指出精度较低的静温数据不符合传导型地温场的特征;导致静温数据精度较低的主要原因是静井时间较短,此外... 试油静温数据是含油气区地温场研究的主要依据之一,但有些油层的静温数据不准确。选取了东营凹陷150口井的静温数据进行精度分析,指出精度较低的静温数据不符合传导型地温场的特征;导致静温数据精度较低的主要原因是静井时间较短,此外油层改造、地下水活动及注水和采油也会对其产生影响。 展开更多
关键词 静温 试油 精度 东营凹陷
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飞机总温(TAT)与静温(SAT)异常显示故障分析
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作者 贺飞 《军民两用技术与产品》 2018年第6期28-28,共1页
空客A320系列飞机这次的故障是一个典型的温度显示的故障,其特点是故障源并不是与温度有直接关系的系统部件.其次该故障无任何警告和故障信息,容易被忽视.
关键词 (TAT) 静温(SAT) PHC ADR
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无粘区静温与涡旋度的关系
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作者 颜幼平 裘品闲 +1 位作者 胡培杰 秦明光 《山东纺织工学院学报》 1994年第1期6-9,共4页
从流体力学基本方程出发,得出了无粘区静温与涡旋度的关系,首次从理论上得到静温分离的结果。
关键词 静温 涡旋度
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基于井温的超深断溶体油藏油井动用深度计算 被引量:8
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作者 顾浩 尚根华 +5 位作者 李慧莉 王强 朱莲花 赵锐 康志江 李王鹏 《特种油气藏》 CAS CSCD 北大核心 2021年第2期57-62,共6页
超深断溶体油藏纵向连通性好,油井生产时井底下方油气易沿断裂高导流通道向井底流动。为明确油井油藏动用深度,以Z油田W9井为例,对比分析超深断溶体油藏流温、静温特征,并基于温度特征建立不同温度-深度关系下油井动用深度计算方法。研... 超深断溶体油藏纵向连通性好,油井生产时井底下方油气易沿断裂高导流通道向井底流动。为明确油井油藏动用深度,以Z油田W9井为例,对比分析超深断溶体油藏流温、静温特征,并基于温度特征建立不同温度-深度关系下油井动用深度计算方法。研究表明:同一深度下流温大于静温,与油嘴直径无关;当深度一定时,油嘴直径越大,流温越高;随深度增大,流温与静温差整体呈降低趋势,靠近井底处流温梯度较低;超深断溶体油藏温度特征受热损失、油井动用深度和传热方式影响;W9井在目前4.5 mm油嘴生产条件下动用深度约为52~62 m。该研究可为超深断溶体油藏油柱高度判断、储量计算、合理生产制度的制订提供依据。 展开更多
关键词 超深油藏 断溶体油藏 动用深度 静温 油柱高度
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产液量对抽油井内流体温度的影响分析 被引量:2
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作者 李汉周 杨海滨 +1 位作者 马建杰 卫光明 《小型油气藏》 2007年第4期58-60,共3页
油井井筒多相流的温度是研究多相流压力和其他参数的基础,同时也是油井生产管理中的一个重要参数。影响油井井筒多相流温度的因素较多,主要通过对井下测试数据的分析,研究了油井井筒流体温度与地温梯度、产液量、含水等因素的关系,... 油井井筒多相流的温度是研究多相流压力和其他参数的基础,同时也是油井生产管理中的一个重要参数。影响油井井筒多相流温度的因素较多,主要通过对井下测试数据的分析,研究了油井井筒流体温度与地温梯度、产液量、含水等因素的关系,这对认识抽油井内温度变化的规律具有借鉴意义。 展开更多
关键词 产液量 井筒流体 静温梯度 检测装置
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井温测井在塔河油田超深井中的应用 被引量:6
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作者 吴春 《特种油气藏》 CAS CSCD 2005年第1期66-69,共4页
井温测井在产出和注入剖面测井过程中有非常广泛的应用 ,可为生产井的动态分析和井内技术诊断提供重要依据。借助井温、温度梯度的大小和变化情况 ,可以定性地判断产层位置、产液量的大小等。本文主要研究了塔河油田生产测井中井温曲线... 井温测井在产出和注入剖面测井过程中有非常广泛的应用 ,可为生产井的动态分析和井内技术诊断提供重要依据。借助井温、温度梯度的大小和变化情况 ,可以定性地判断产层位置、产液量的大小等。本文主要研究了塔河油田生产测井中井温曲线的形态特征 。 展开更多
关键词 测井 剖面 梯度 静温剖面 产出层段
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任丘潜山高温小井眼水平井定向技术 被引量:1
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作者 张炳顺 谭勇志 《石油钻采工艺》 CAS CSCD 北大核心 2010年第1期102-106,共5页
通过长3平1、长3平2两口潜山高温小井眼水平井的施工实践,针对潜山高温水平井施工技术难点进行了阐述。任丘潜山水平井地质形态复杂,地质卡层难;硅质白云岩与灰色白云岩研磨性极强、可钻性差,钻头选型难;入靶精确度要求高,井身轨迹控制... 通过长3平1、长3平2两口潜山高温小井眼水平井的施工实践,针对潜山高温水平井施工技术难点进行了阐述。任丘潜山水平井地质形态复杂,地质卡层难;硅质白云岩与灰色白云岩研磨性极强、可钻性差,钻头选型难;入靶精确度要求高,井身轨迹控制难;井底流动温度较高,随钻仪器监测难;泵压高、排量小、地层漏失,钻屑上返难。通过优化技术方案、优选定向仪器和工具,完善了潜山高温水平井施工工艺,为今后的工作提供了理论依据。 展开更多
关键词 潜山 小井眼 静温
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相关流量追踪法测井技术在塔里木盆地的应用 被引量:1
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作者 伍轶鸣 秦民君 +3 位作者 潘昭才 于志楠 路云峰 裴阳 《石油天然气学报》 CAS CSCD 2014年第11期101-105,7,共5页
塔里木盆地由于受特殊的地质条件和注入因素影响,其测井的自然伽马基线普遍存在高幅度异常。采用传统同位素方法测井时,自然伽马基线与同位素示踪曲线差异不明显,精度较低。针对自然伽马基线高幅度异常特点,改进施工工艺,采用相关流量... 塔里木盆地由于受特殊的地质条件和注入因素影响,其测井的自然伽马基线普遍存在高幅度异常。采用传统同位素方法测井时,自然伽马基线与同位素示踪曲线差异不明显,精度较低。针对自然伽马基线高幅度异常特点,改进施工工艺,采用相关流量追踪法,并加测涡轮流量、关井井温,提高了研究区的测井精度,准确评价了地层吸水状况。 展开更多
关键词 基线异常 相关流量 静温 塔里木盆地
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Comparison of mechanical properties in high temperature and thermal treatment granite 被引量:21
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作者 尹土兵 舒荣华 +2 位作者 李夕兵 王品 刘希灵 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第7期1926-1937,共12页
Static mechanical experiments were carried out on granite after and under different temperatures using an electro-hydraulic and servo-controlled material testing machine with a heating device. Variations in obvious fo... Static mechanical experiments were carried out on granite after and under different temperatures using an electro-hydraulic and servo-controlled material testing machine with a heating device. Variations in obvious form, stress-strain curve, peak strength, peak strain and elastic modulus with temperature were analyzed and the essence of rock failure modes was explored. The results indicate that, compared with granite after the high temperature treatment, the brittle-ductile transition critical temperature is lower, the densification stage is longer, the elastic modulus is smaller and the damage is larger under high temperature. In addition, the peak stress is lower and the peak strain is greater, but both of them change more obviously with the increase of temperature compared with that of granite after the high temperature treatment. Furthermore, the failure modes of granite after the high temperature treatment and under high temperature show a remarkable difference. Below 100 ℃, the failure modes of granite under both conditions are the same, presenting splitting failure. However, after 100 ℃, the failure modes of granite after the high temperature treatment and under high temperature present splitting failure and shear failure, respectively. 展开更多
关键词 GRANITE thermal treatment high temperature effect static mechanical properties failure properties
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夜曲三章
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作者 巴桐 《华文文学》 1998年第4期19-20,共2页
关键词 夜曲 天桥 青春的活力 谁会相信 海市蜃楼 姹紫嫣红 静温 塑胶 使者 泻流
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独享快乐
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作者 一洁 《长江工程职业技术学院学报》 CAS 1995年第4期72-72,共1页
快乐完全是一种感觉,你感觉自己是快乐的,你就是快乐的。所以很多的时候,我觉得那种无声的快乐,隐自心灵深处,便是无法与他人分享。夜深时,周围是一片静谧,唯有床头的小灯闪着柔柔淡淡的桔色光亮,轻轻地放上一盘CD,幽幽古琴声徐徐荡开,... 快乐完全是一种感觉,你感觉自己是快乐的,你就是快乐的。所以很多的时候,我觉得那种无声的快乐,隐自心灵深处,便是无法与他人分享。夜深时,周围是一片静谧,唯有床头的小灯闪着柔柔淡淡的桔色光亮,轻轻地放上一盘CD,幽幽古琴声徐徐荡开,一曲《平沙落雁》,空灵、隽永,便久久回响在心胸; 展开更多
关键词 《平沙落雁》 林语堂 梁实秋 小灯 桔色 自心 雅舍 诗语 忍俊 静温
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财政监察员的风采
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作者 王龙明 《四川财政》 1994年第8期24-25,共2页
财政监察员的风采王龙明你应着时代的召唤,为了廉洁理财,经济发记,走上了财政监察这一神圣的人生舞台,当了一名财政监察员,实现了你纯洁的梦。你带着财政法规,·踏上了财政改革的征程,沿着财政改革之路奋力跋涉,无论是艰难... 财政监察员的风采王龙明你应着时代的召唤,为了廉洁理财,经济发记,走上了财政监察这一神圣的人生舞台,当了一名财政监察员,实现了你纯洁的梦。你带着财政法规,·踏上了财政改革的征程,沿着财政改革之路奋力跋涉,无论是艰难坎坷疾风暴雨,还是坦途缓坡日丽天晴,你... 展开更多
关键词 财政监察 财政改革 违法违纪 财政法规 改革之路 健康发展 领奖台 经济发 岁月 静温
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Effect of Re element on oxidation resistance of Ni_3Al-Mo based alloys at 1150 ℃ 被引量:1
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作者 成阳 张恒 +3 位作者 宋丽文 马岳 李树索 宫声凯 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第3期510-515,共6页
The isothermal oxidation behaviors of three kinds of Ni3Al-Mo based alloys at 1150 ℃ were studied.The morphology,structure and element distribution of oxide scales of the alloys were researched by scanning electron m... The isothermal oxidation behaviors of three kinds of Ni3Al-Mo based alloys at 1150 ℃ were studied.The morphology,structure and element distribution of oxide scales of the alloys were researched by scanning electron microscopy,X-ray diffraction and electron probe microanalysis.The research results show that there are three oxide layers,an outer layer of NiO,an intermediate layer mainly composed of NiO,NiAl2O4 and a small amount of NiMoO4,and an inner layer of NiAl2O4 and Al2O3.Re element was mainly distributed in the intermediate layer,which plays a role as "diffusion barrier" in the process of oxidation,and effectively reduces the diffusion rate of Al and Mo elements outward and diffusion rate of O element inward.As a result,a Al-rich oxide layer formed in the inner layer inhibits the growth of oxide layer and improves the oxidation resistance of the alloy. 展开更多
关键词 Ni3Al-Mo based alloy Re element isothermal oxidation
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Ductility improvement methods for commercial AZ31B magnesium alloy in cold forging 被引量:3
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作者 Ryo MATSUMOTO 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第7期1275-1281,共7页
In order to realize cold forging of magnesium alloys in practical application,some methods for ductility improvement of a commercial wrought AZ31B magnesium alloy(Mg-3%Al-1%Zn,mass fraction) at room temperature were s... In order to realize cold forging of magnesium alloys in practical application,some methods for ductility improvement of a commercial wrought AZ31B magnesium alloy(Mg-3%Al-1%Zn,mass fraction) at room temperature were suggested.The effects of heat treatment before forging and hydrostatic pressure during forging on the ductility were investigated in cold upsetting and cup forging.High-temperature annealing was effective to reduce the degree of the texture anisotropy of the specimen,and it was found that the forging limit of the annealed specimen was improved in cold forging.On the other hand,cold cup forging of the annealed specimen was carried out with applying counter pressure.By applying counter pressures of 100-200 MPa during forging,the critical punch stroke for forging limit of the specimen without crack was improved by 25%in punch stroke. 展开更多
关键词 magnesium alloy FORGING FORGEABILITY heat treatment counter force finite element simulation
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CFD simulation of high-temperature effect on EHD characteristics in a wire-plate electrostatic precipitator 被引量:10
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作者 李艳 郑成航 +3 位作者 罗坤 高翔 樊建人 岑可法 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第4期633-640,共8页
A computational fluid dynamics (CFD) model is carried out to describe the wire-plate electrostatic precipitator (ESP) in high temperature conditions, aiming to study the effects of high temperature on the electro-... A computational fluid dynamics (CFD) model is carried out to describe the wire-plate electrostatic precipitator (ESP) in high temperature conditions, aiming to study the effects of high temperature on the electro- hydrodynamic (EHD) characteristics. In the model, the complex interactions at high temperatures between the electric field, fluid dynamics and the particulate flow are taken into account. We apply different numerical methods for different fields, including an electric field model, Euler-Lagrange particle-laden flows model, and particle charging model. The effects of high temperature on ionic wind, EHD characteristics and collection effi- ciency are investigated. The numerical results show high temperature causes more significant effects of the ionic wind on the gas secondary flow. High viscosity of gas at high temperature makes particles follow the gas flow pattern more closely. High temperature reduces the surface electric strength, so that the mean electric strength weakens the space charging. On the contrary, there is an increase in the diffusion charging at high tem- perature compared with at low temperature. High temperature increases the ratio of mean drag force over mean electrostatic force actin~ on the ~atticles which mav contribute to a decline of collection efficiencv. 展开更多
关键词 Electro-hydrodynamicElectrostatic precipitationHigh temperatureIonic wind
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Static recrystallization behavior of hot-deformed magnesium alloy AZ31 during isothermal annealing 被引量:4
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作者 杨续跃 朱亚坤 +1 位作者 H.MIURA T.SAKAI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第7期1269-1274,共6页
The static recrystallization of hot-deformed magnesium alloy AZ31 during isothermal annealing was studied at temperature of 503 K by optical and SEM/EBSD metallographic observation.The grain size change during isother... The static recrystallization of hot-deformed magnesium alloy AZ31 during isothermal annealing was studied at temperature of 503 K by optical and SEM/EBSD metallographic observation.The grain size change during isothermal annealing is categorized into three regions,i.e.an incubation period for grain growth,rapid grain coarsening,and normal grain growth.The number of fine grains per unit area,however,decreases remarkably even in incubation period.This leads to grain coarsening taking place continuously in the whole period of annealing.In contrast,the deformation texture scarcely changes even after full annealing at high temperatures.It is concluded that the annealing processes operating in hot-deformed magnesium alloy with continuous dynamic recrystallized grain structures can be mainly controlled by grain coarsening without texture change,that is,continuous static recrystallization. 展开更多
关键词 magnesium alloy AZ31 ANNEALING continuous recrystallization grain growth texture
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Microstructure and mechanical properties of CuAgZn/GH909 diffusion bonded joint fabricated by hot isostatic pressing 被引量:1
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作者 Yi XIAO Li-hui LANG Wen-cai XU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第2期475-484,共10页
The hot isostatic pressing-diffusion bonding(HIP-DB)was proposed to achieve the joining of CuAgZn and GH909 directly without an interlayer.The microstructure of joint was characterized by scanning electron microscope(... The hot isostatic pressing-diffusion bonding(HIP-DB)was proposed to achieve the joining of CuAgZn and GH909 directly without an interlayer.The microstructure of joint was characterized by scanning electron microscope(SEM),energy dispersive spectrometer(EDS)and X-ray diffraction(XRD).The microhardness and shear strength were tested to investigate the mechanical properties of joint.The results showed that the interface was complete,and the joint was compact,uniform and free of unbonded defects.The maximum microhardness of joint was HV 443,higher than that of two base alloys,and the average shear strength of joint reached 172 MPa.It is concluded that a good metallurgical bonding between CuAgZn and GH909 can be obtained by HIP-DB with the process parameters of 700℃,150 MPa and 3 h. 展开更多
关键词 CuAgZn alloy GH909 superalloy diffusion bonding hot isostatic pressing
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Thermal decomposition and mechanical properties of hydroxyapatite ceramic 被引量:5
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作者 杨春 郭英奎 张密林 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第2期254-258,共5页
Pure hydroxyapatite(HAP)ceramic and HAP composite ceramic with B2O3 were prepared by isostatic press forming and pressureless sintering.The relationships between thermal decomposition ratio and mechanical properties... Pure hydroxyapatite(HAP)ceramic and HAP composite ceramic with B2O3 were prepared by isostatic press forming and pressureless sintering.The relationships between thermal decomposition ratio and mechanical properties for pure HAP ceramic and the composite ceramic were investigated by means of FTIR,X-ray diffraction and three-point bending method.The results indicate that the decomposition ratio of pure HAP ceramic increases with ascending the sintering temperature and nearly reaches 80%at 1 350?殆or the HAP composite ceramic,the thermal decomposition is inhibited obviously due to the addition of B2O3.The added B atoms incorporate into the crystal lattice of HAP to form solid solution,resulting in an enlargement in the crystal spacing and an improvement in the binding strength of HAP crystal cell.Thermal decomposition ratio of HAP decreases but bending strength and fracture toughness are enhanced for HAP composite ceramics.However,when the added B2O3 is more than 5%(mass fraction),HAP decomposition is promoted and a steady?-TCP is formed due to the fact that when B atoms with higher negative electricity are combined with O,sp2 and a full-air p are formed,and those voids have a strong trend to intake of the outer electrons.So,it is very possible to occupy the place where HAP loses OH - or PO4 3- . 展开更多
关键词 B2O3 hydroxyapatite ceramic thermal decomposition bending strength fracture toughness
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Thermal Decomposition Kinetics of Abietic Acid in Static Air 被引量:3
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作者 农韦健 陈小鹏 +3 位作者 王琳琳 梁杰珍 钟玲萍 童张法 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2013年第7期724-729,共6页
The thermal decomposition of abietic acid in air was investigated under non-isothermal condition using thermogravimetric analysis-differential thermal analysis (TGA-DTA) technique with heating rates of 5, 10, 15 and... The thermal decomposition of abietic acid in air was investigated under non-isothermal condition using thermogravimetric analysis-differential thermal analysis (TGA-DTA) technique with heating rates of 5, 10, 15 and 25 K.min-~. The non-isothermal kinetic parameters were obtained via the analysis of the thermogravimetric and differential thermogravimetric (TG-DTG) curves by using Flynn-Wall-Ozawa method and Kissinger method. The thermal decomposition mechanism of abietic acid was studied with four integral methods (Satava-Sestak, MacCallum-Tanner, ordinary integral and Agrawal). The results show that the thermal decomposition mechanism is nu- cleation and growth, and the mechanism function is Avrami-Erofeev equation with n equates 1/2. The activation energy and the pre-exponential factor are 64.04 kJ.mol^-1 and 5.89×10^5 s^-1, respectively. 展开更多
关键词 abietic acid activation energy thermal decomposition KINETICS integr~ method
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