Longitudinal natural vibration of ultra-long drill string during offshore drilling

Wada, Ryota; Kaneko, Tatsuya; Ozaki, Masahiko; Inoue, Tomoya; Senga, Hidetaka

doi:10.1016/j.oceaneng.2018.02.054

Cited by 27 publications

(6 citation statements)

References 12 publications

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“…In deep-sea riserless drilling for scientific purposes, similarly to offshore drilling, the drillstring is easily bent especially under the effect of strong currents [9]. Moreover, for this specific deep-sea drilling, the motions leading to the axial dynamic stress need to be carefully considered because the natural period of longitudinal vibration is close to the wave periods [10].…”

Section: Introductionmentioning

confidence: 99%

Fatigue resonant tests on S140 and S150 grade corroded drill pipe connections and pipe bodies

Santus

Burchianti²,

Inoue

et al. 2020

International Journal of Pressure Vessels and Piping

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Section: Introductionmentioning

confidence: 99%

Fatigue resonant tests on S140 and S150 grade corroded drill pipe connections and pipe bodies

Santus

Burchianti²,

Inoue

et al. 2020

International Journal of Pressure Vessels and Piping

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“…Although the turbine generators offer significant advantages over battery power in terms of quantity of power and sustainability, they also have the disadvantages of complex construction, high cost, and stringent requirements of flow and viscosity. [7,10] Meanwhile, the drill pipe inevitably produces vibration, especially lateral vibration, during operation, [11][12][13][14] while the vibrational energy is widely distributed throughout the whole drill pipe assembly, but is underutilized. Therefore, it is a good choice to develop a new approach to utilize the vibration energy, which cannot only power the MWD system, but also realize the self-powered monitoring of the drill pipe.…”

Section: A Drill Pipe-embedded Vibration Energy Harvester and Self-po...mentioning

confidence: 99%

A Drill Pipe‐Embedded Vibration Energy Harvester and Self‐Powered Sensor Based on Annular Type Triboelectric Nanogenerator for Measurement while Drilling System

Dong

et al. 2022

Adv Materials Technologies

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Measurement while drilling (MWD) system of offshore drill pipe is of great significance for safety production. It is greatly demanded to develop a sustainable power supply as well as self‐powered sensors for the MWD system. In this work, a drill pipe‐embedded annular type triboelectric nanogenerator (AT‐TENG) is proposed and systematically investigated, and it consists of an annular silicone rubber and a pair of electrodes. The design of the AT‐TENG allows the silicone rubber to contact and separate with the electrodes easily in a narrow space under arbitrary direction vibration to realize power generation. The experimental results show that the peak power density of AT‐TENG with single‐pair electrode reaches 63.7 W m−3 under the vibration frequency of 4 Hz and amplitude of 100 mm. The minimum peak voltage is >65 V within 360° lateral vibration range. The peak voltage achieves 351.62 V under the third‐order natural frequency. In addition, the amplitude and frequency obtained from the voltage signals exhibit linearly with those of actual vibration. The mean error between the frequency detected by AT‐TENG and actual frequency is <0.03%. Thus, the AT‐TENG can serve as an energy harvester and self‐powered vibration sensor.

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“…Fourier analysis reveals [18] that the pressure spectrum has two main peaks, one centered at 0.0625 Hz (a 16 s period) with a 5.89 MPa amplitude, another centered at 0.625 Hz (a 1.6 s period) with a 7.63 MPa amplitude, Fig. 12a.…”

Section: Cylinder Power Analysismentioning

confidence: 99%

Design and Full-Scale Experimental Results of a Semi-Active Heave Compensation System for a 200 T Winch

Niu

Yan³

et al. 2019

IEEE Access

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Lifting and lowering a load on the ocean can be a dangerous task but can be made easy and safe by adopting heave compensation (HC) devices. The design and full-scale experimental results of a 3000-m semi-active heave compensation (AHC) system for a 200-T winch are presented in this paper. First, the design requirements are given and the semi-AHC mechanism is chosen. An integrated cylinder with one passive chamber and two active chambers is designed. Then, the capacities of the passive and active chambers are determined. The hydraulic and electrical systems and the control strategies are introduced subsequently. Finally, full-scale factory tests at different sinusoidal wave periods and amplitudes show that the semi-AHC system has a displacement compensation efficiency of 92.9% met the design requirements. In-depth power analysis further shows that the active and passive chambers contribute 20.5% and 72.4% displacement compensation efficiencies, respectively. The efficiency of the passive chamber consists with the 68%-80% passive compensation efficiency from Oceanworks Company and Rexroth Company.INDEX TERMS Integrated cylinder, passive heave, power analysis, semi-active heave compensation.

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Longitudinal natural vibration of ultra-long drill string during offshore drilling

Cited by 27 publications

References 12 publications

Fatigue resonant tests on S140 and S150 grade corroded drill pipe connections and pipe bodies

Fatigue resonant tests on S140 and S150 grade corroded drill pipe connections and pipe bodies

A Drill Pipe‐Embedded Vibration Energy Harvester and Self‐Powered Sensor Based on Annular Type Triboelectric Nanogenerator for Measurement while Drilling System

Design and Full-Scale Experimental Results of a Semi-Active Heave Compensation System for a 200 T Winch

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