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casing setting depth
相关语句
  套管下入深度
     Based on the conventional casing program design method and the variation rule of the EMD of DGD well, the casing setting depth calculation formula is derived.
     根据传统井身结构设计方法和双梯度的井眼钻井液当量密度的变化规律,推导出套管下入深度的计算公式。
短句来源
  相似匹配句对
     Field Calculation of Casing Head Setting Load
     套管悬挂载荷的现场计算
短句来源
     The method of Setting Up the Maximal Field Depth
     最大景深的设定方法
短句来源
     (2) pump setting depth is rniddle to shallow.
     (2)中浅京挂,小沉没度;
短句来源
     Technique of Setting Casing in Deflection Well with High-Inclination
     大斜度定向井的下套管技术
短句来源
     The female casing coupling is deformed to make up improperly, due to the big size of casing, deep setting depth and heavy hanging load.
     由于套管尺寸大、下入深、悬重大,引起母接箍变形,上扣不到位;
短句来源
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Aiming at the characteristics and requirements of deep well drilling in the complex geologic setting area, a new method for designing casing program is proposed on the basis of traditional design method. The new method for casing program design includes two steps, e.g. designing from bottom to top and from top to bottom of each layer in drilling formation. The minimum depth of casing for each layer can be obtained by the designing step from bottom to top, and the maximum can be...

Aiming at the characteristics and requirements of deep well drilling in the complex geologic setting area, a new method for designing casing program is proposed on the basis of traditional design method. The new method for casing program design includes two steps, e.g. designing from bottom to top and from top to bottom of each layer in drilling formation. The minimum depth of casing for each layer can be obtained by the designing step from bottom to top, and the maximum can be obtained by the step from top to bottom. Casing setting depth can be designed more rationally by combining the two designing steps.

根据深井钻井的特点以及钻井施工对井身结构设计的特殊要求 ,在传统井身结构设计方法的基础上 ,提出了井身结构设计的自下而上和自上而下二步设计法 ,并建立了相应的井身结构设计数学模型。自下而上设计法可用于计算每层套管的最浅下入深度 ,自上而下设计法可用于计算每层套管的最深下入深度。二者相结合使井身结构设计方法更趋合理

During deepwater drilling, due to the small difference between the formation pore pressure and fracture pressure, casing program design is challenging, a new technique known as "Dual Gradient Drilling (DGD)" has been thus developed. This paper presents the basic principle of DGD, and proposes equation for calculating the equivalent density of the drilling fluid in the wellbore below seabed mudline. Based on the conventional casing program design method and the variation rule of the EMD of DGD well, the casing...

During deepwater drilling, due to the small difference between the formation pore pressure and fracture pressure, casing program design is challenging, a new technique known as "Dual Gradient Drilling (DGD)" has been thus developed. This paper presents the basic principle of DGD, and proposes equation for calculating the equivalent density of the drilling fluid in the wellbore below seabed mudline. Based on the conventional casing program design method and the variation rule of the EMD of DGD well, the casing setting depth calculation formula is derived. And considering the features and particular requirements of deepwater drilling, a program for deepwater DGD well casing program design and optimization is developed. The case study herein shows that two or three casing strings can be eliminated by using DGD when compared to conventional riser drilling, which will ultimately reduce the size of both hole and wellhead as well as casing cost. Therefore, DGD may provide an alternative optimization method for deepwater well casing program design, which can produce remarkable economic and industrial values.

针对深水钻井中因地层压力和破裂压力间隙过小引起的井身结构设计问题,提出采用双梯度钻井技术。介绍了双梯度钻井技术的基本原理,给出了海底泥线下井眼钻井液当量密度公式。根据传统井身结构设计方法和双梯度的井眼钻井液当量密度的变化规律,推导出套管下入深度的计算公式。结合深水钻井的特点,考虑钻井施工的特殊要求,开发了深水双梯度钻井井身结构设计及优化程序。实例分析表明,与常规钻井方法相比,双梯度钻井井眼钻井液压力很好地匹配了地层压力和破裂压力之间的间隙,将去除使用2~3层套管鞋深度点,减少井眼和井口尺寸以及降低套管费用。双梯度钻井为深水钻井井身结构设计提供了一种新的优化方法,具有显著的经济效益和工业实用价值。

 
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