Results 71 to 80 of about 242,341 (155)
, 2017 Drilling deep HPHT wells is the most compelling reason for drilling companies to look for alternative drill pipes that meet their requirements. Currently, with the emergence of drill pipes made of materials other than steel, a thorough study of ...
Bouali, Elahmoun +5 more
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Reaming While Drilling Drillstring Structure Optimization and Application Performance Evaluation
Shiyou jixie, 2016 The reaming tool BHA is the most important controllable factor during reaming while drilling operations,whereas the irrational drill string structure could lead to intensified drill string vibration.In view of this,the drill string-formation finite ...
Zhang Qiang, Fu Jianhong, Li Haoran
doaj
Analysis on the dynamics of flexible drillstring under different drilling parameters
Frontiers in Earth ScienceDuring the operation of the drill string, it displays a degree of flexibility. Simultaneously, its dynamic properties, influenced by complex stress conditions, manifest nonlinearity and uncertainty.
Jifei Cao +8 more
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Qualification of a computer program for drill string dynamics
, 1985 A four point plan for the qualification of the GEODYN drill string dynamics computer program is described. The qualification plan investigates both modal response and transient response of a short drill string subjected to simulated cutting loads applied
Carne, T. G. +2 more
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Study on Drill String Fatigue Life in Deepwater Drilling
Shiyou jixie, 2016 Dynamic response of the deepwater drilling platform increases alternating loads of the drilling string.As a consequence,the calculation of drill string fatigue life becomes more complicated.By using the numerical simulation method,a method for studying ...
Wang Jiajia, Chen Jianmin
doaj
Effect of installation distance of shakers on weight on bit and accelerations of the drill-string.
, 2018 (A) Change of weight on bit in the bottom hole over time. (B) Maximum acceleration along the drill-string. (C) Root mean square acceleration along the drill-string. https://dx.doi.org/10.17504/protocols.io.kfactie.
Ruihe Wang (736822) +2 more
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EXPERIMENTAL AND NUMERICAL STUDIES OF DRILL-STRING DYNAMICS [PDF]
, 2011 A drill string is the transmission component of rotary drill-rig system used for mining petroleum and natural gas resources. The drill-string system is essentially a long slender structure whose length can be in kilometers. Additionally, the drill-string
Liao, Chien-Min
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Influence of Physical Parameters on Acoustic Transmission Characteristics of Drill String Channel
Shiyou jixie, 2019 The in-depth study of the transmission characteristics of sound waves in the drill string is of great significance for the development of sound transmission systems. The drill string is considered as pipeline composed of different uniform circular tubes.
Huang Mingquan, Zhao Guoshan, Tan Zhe
doaj
Study on Mechanism of Stick–Slip Vibration Based on Torque Characteristics of PDC Bit
Applied SciencesStick–slip vibration (SV) of drill string systems is the main cause of fatigue failure of PDC bits under complex drilling conditions. Exploring its mechanism is helpful for identifying the causes of bit failure and developing preventive measures to ...
Lijun Li, Chunliang Zhang, Aixuan Wu
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Acoustical properties of drill strings
The Journal of the Acoustical Society of America, 1989 The recovery of petrochemical and geothermal resources requires extensive drilling of wells to increasingly greater depths. Real-time collection and telemetry of data about the drilling process while it occurs thousands of feet below the surface is an effective way of improving the efficiency of drilling operations.
openaire +2 more sources