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低温固井
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  cementing at low temperature
     In general, separable setting sand-cement slurry system with the density of 1.90 g/cm 3 was employed because it meets the special requirements of cementing at low temperature and later steam processing at high temperature in heavy oil wells;
     一般情况下,采用密度为1.90 g/cm3 加砂双凝水泥浆体系,该体系性能满足了稠油井低温固井、后期高温注蒸汽开采作业的特殊要求;
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  “低温固井”译为未确定词的双语例句
     Many challenges were faced in cementing of deep sea, such as low temperature, potential shallow layer water and gas breakthrough, the narrow safe mud density window between the formation pore pressure and the fracturing pressure, frequent lost circulation, the evolution of slurry temperature and the differential displacement.
     深水固井面临着诸多的挑战,如低温、潜在的浅层水窜和气窜、地层孔隙压力和破裂压力之间“窗口”狭窄,地层易压漏、水泥浆温度的演变、顶替差等,提出满足深水低温固井的水泥浆的基本性能要求是:①水泥浆密度低; ②低温下较短的过渡时间和优良的抗压强度;
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  相似匹配句对
     Cementing technology in low temperature shallow layers
     低温浅层油气井固井技术
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     The Low Temperature Electrochemistry
     低温电化学
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     Cementing composition and its application in shallow reservoir at BHST
     低温浅层稠油井固井水泥浆体系研究及应用
短句来源
     Equipment of valve cryogenic test
     阀门低温试验装置
短句来源
     WELL CEMENTING TECHNOLOGY FOR SICHUAN REGION
     四川固井技术
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In Nanyang oilfield, shallow heavy oil reservoir of large area is buried in depth from 200 m to 1000 m, and at atmospheric temperature, the heavy oil viscosity is 9050~52000 mPa·s. During the drilling process, lost circulation and hole collapse often occurs, the drilling fluid density was out of control, the cementing qualification rate was about 80%, and the high quality rate was less than 60%. Based on researches and tests, a set of technology and relevant cement slurry system were formed. In general, separable...

In Nanyang oilfield, shallow heavy oil reservoir of large area is buried in depth from 200 m to 1000 m, and at atmospheric temperature, the heavy oil viscosity is 9050~52000 mPa·s. During the drilling process, lost circulation and hole collapse often occurs, the drilling fluid density was out of control, the cementing qualification rate was about 80%, and the high quality rate was less than 60%. Based on researches and tests, a set of technology and relevant cement slurry system were formed. In general, separable setting sand-cement slurry system with the density of 1.90 g/cm 3 was employed because it meets the special requirements of cementing at low temperature and later steam processing at high temperature in heavy oil wells; and at 30 ℃, the thickening time of the cement slurry for long section is conditioned within 90~120 min and the cement slurry for short section within 50~60 min, and the filtrate volume below 50 mL. This system has been used in 70 + wells with average depth of 400 m. Results showed that cement returned to the surface in all the wells. The cementing qualification rate was 96%, and the high quality rate was 82%.

南阳油田的浅层稠油分布面积大,深度一般为200~1000 m,常温下稠油粘度为9050~52000 mPa·s,钻井中井漏、井壁坍塌时有发生,钻井液密度难以控制,固井合格率一直在80%左右,优良率不到60%,固井质量严重影响了油田的产能建设和合理开发。经过对浅层稠油井固井技术的研究、试验,形成了一套适合于浅层稠油井固井的工艺技术措施和水泥浆体系。一般情况下,采用密度为1.90 g/cm3 加砂双凝水泥浆体系,该体系性能满足了稠油井低温固井、后期高温注蒸汽开采作业的特殊要求;在30 ℃左右时,长段水泥浆稠化时间控制为90~120min,短段为50~60 min,失水量小于50 mL。经现场应用表明,该体系在南阳古城和井楼地区共固稠油井70 余口,平均井深为400 m,水泥浆全部返至地面,固井质量合格率达96%,优良率达82%,取得了好的效果。

Many challenges were faced in cementing of deep sea, such as low temperature, potential shallow layer water and gas breakthrough, the narrow safe mud density window between the formation pore pressure and the fracturing pressure, frequent lost circulation, the evolution of slurry temperature and the differential displacement. The essential performances of slurry for low temperature cementing were proposed as follows: low slurry density, little transition time at low temperature, excellent compression resistance,...

Many challenges were faced in cementing of deep sea, such as low temperature, potential shallow layer water and gas breakthrough, the narrow safe mud density window between the formation pore pressure and the fracturing pressure, frequent lost circulation, the evolution of slurry temperature and the differential displacement. The essential performances of slurry for low temperature cementing were proposed as follows: low slurry density, little transition time at low temperature, excellent compression resistance, few filtration, well integrity of slurry, satisfactory long-term sealing and cementing of slurry with casing and formation and high displacing efficiency. The several conventional cementing technologies for deep sea abroad were reviewed which included rapid setting gypsum slurry, PSD slurry, high alumina slurry, aerated slurry and so on. Some crucial problems on deep sea cementing were emphasized and proposed.

深水固井面临着诸多的挑战,如低温、潜在的浅层水窜和气窜、地层孔隙压力和破裂压力之间“窗口”狭窄,地层易压漏、水泥浆温度的演变、顶替差等,提出满足深水低温固井的水泥浆的基本性能要求是:①水泥浆密度低;②低温下较短的过渡时间和优良的抗压强度;③低失水;④好的水泥浆完整性;⑤水泥浆与套管和地层的密封和胶结等长期性能好;⑥顶替效率高。介绍了国外常见的几种深水固井水泥浆技术,包括快凝石膏水泥浆体系、PSD水泥浆技术、高铝水泥、充气水泥浆技术和其他水泥浆技术。最后就深水固井应重点注意的几个问题提出了建议。

In consideration of the problems conventionally encountered in deep water and low temperature cementation, the hazard and mechanism for channeling prevention of surface flow and shallow flow in deep water are analyzed. The design principle of deep water cementing slurry is introduced. It is proposed that the slurry system used in deep water and low temperature is developed in laboratory.

针对深水低温固井常遇到的问题,分析了深水表层浅层流的危害及防窜机理,介绍了深水固井水泥浆设计原理,提出了室内开发的深水低温水泥浆体系。

 
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