A Method for Estimating the Location of the Drill-Bit During Horizontal Directional Drilling Using a Giant-Magnetostrictive Vibrator

Tamura, Junpei; Kawamura, Y.; Mochiji, Hidemi; Sasaki, Naoto; Mizutani, Koichi; Okawa, Hirokazu

doi:10.1143/jjap.50.07hc15

Cited by 10 publications

(5 citation statements)

References 36 publications

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“…Propagation velocity of sand in previous studies is shown. [28][29][30][31] When sand is assumed to be solid or liquid, propagation velocity is shown. 26) Ultrasound irradiation can be applied to SAGD, it is effective to propagate widely.…”

Section: Experimental Methodsmentioning

confidence: 99%

Investigation of Thermal Conductivity and Heat Characteristics of Oil Sands Using Ultrasound Irradiation for Shortening the Preheating Time

Kamagata¹,

Kawamura²,

Okawa³

et al. 2012

Jpn. J. Appl. Phys.

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Oil sands are attractive as an energy resource. Bitumen, which is found in oil sands, has high viscosity, so that it does not flow. Most oil sands are underground and are developed with a method called steam-assisted gravity drainage (SAGD). Hot steam is injected underground to fluidize bitumen and promote its recovery. However, the preheating time is too long. One way of reducing running costs is by shortening the preheating time. Previous studies have found that bitumen can be extracted from oil sands efficiently by applying ultrasonic irradiation, but SAGD was not applied directly in these cases. Thus, the purpose of this study is to apply ultrasonic irradiation to SAGD, thereby shortening the preheating time of oil sands. As a model experiment for SAGD, heat transfer experiments in a sand layer made with Toyoura sand and silicone oil were conducted and the thermal effect with ultrasound was investigated. #

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Section: Experimental Methodsmentioning

confidence: 99%

Investigation of Thermal Conductivity and Heat Characteristics of Oil Sands Using Ultrasound Irradiation for Shortening the Preheating Time

Kamagata¹,

Kawamura²,

Okawa³

et al. 2012

Jpn. J. Appl. Phys.

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“…The thermal expansion coefficient of adhesive cobalt is larger than that of diamond, which causes the polycrystalline diamond layer to generate intergranular cracking and quickly reduces its structural strength. 1,[10][11][12][13][14][15] Although the impact resistance of the polycrystalline diamond layer has increased significantly in the supporting role of carbide, its inside residual stress causes the PDC to still be easy to peel-off under a large impact load, which will result in the rapid loss of its rock-breaking ability. [16][17][18][19][20] In this paper, we propose a new type of embedded PDC based on our previous research.…”

Section: Introductionmentioning

confidence: 99%

The wear analysis model and rock-breaking mechanism of a new embedded polycrystalline diamond compact

Tian

Liu

Yang

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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Polycrystalline diamond layer peel-off is a hot topic in oil and gas drilling engineering. When an integrated polycrystalline diamond compact cutter suffers overload, there is a rapid decline in its rock-breaking performance and drilling rate of penetration. To modify the comprehensive performance of polycrystalline diamond compact, we innovatively propose a new embedded polycrystalline diamond compact. According to geometric analysis theory combined with the linear combination rule, the three typical embedded design schemes – the imitation palm-shaped, imitation Z-shaped and ring-embedded designs – are discussed. The influences of the number, size, location and combination of the embedded polycrystalline diamond layer on the polycrystalline diamond compact wear mechanism and rock-breaking performance are analysed. The results show that the embedded element and carbide matrix are combined by brazing welding, which not only exerts high abrasion resistance on the polycrystalline diamond layer but also combines with the good impact performance of carbide matrix. Compared with ordinary polycrystalline diamond compact, the intake amount of a single-embedded polycrystalline diamond compact is smaller, and it wears more evenly during the rock-breaking process. Comparing the results from before and after drilling, it effectively prevents the ordinary polycrystalline diamond compact from easily peeling off when suffering overload. The unique wear analysis model can be applied to other types of polycrystalline diamond compact by adjusting the embedding method. The research conclusions provide useful insights into the study of the polycrystalline diamond compact wear mechanism and rock-breaking performance.

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“…Therefore, we propose a method for the monitoring and imaging of the water content in the rooting zone of plants using sound vibration. 1) Shallow underground imaging using the sound wave vibration has been already performed, and there are techniques using a shear horizontal wave, [2][3][4][5][6][7][8][9][10] an electromagnetic sound source, [11][12][13][14] a giant magnetostriction vibrator, [15][16][17] and an air-borne wave [18][19][20][21][22] have been developed. However, no research in which irrigation is controlled by measuring the water distribution in the rooting zone of plants using sound vibration has been performed yet.…”

Section: Introductionmentioning

confidence: 99%

Study on Water Distribution Imaging in the Sand Using Propagation Velocity of Sound with Scanning Laser Doppler Vibrometer

Sugimoto

Nakagawa

Sügimura

et al. 2013

Jpn. J. Appl. Phys.

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We propose a method for the monitoring and imaging of the water distribution in the rooting zone of plants using sound vibration. In this study, the water distribution measurement in the horizontal and vertical directions in the soil layer was examined to confirm whether a temporal change in the volume water content of the soil could be estimated from a temporal changes in propagation velocity. A scanning laser Doppler vibrometer (SLDV) is used for measurement of the vibration velocity of the soil surface, because the highly precise vibration velocity measurement of several many points can be carried out automatically. Sand with a uniform particle size distribution is used for the soil, as it has high plasticity; that is, the sand can return to a dry state easily even if it is soaked with water. A giant magnetostriction vibrator or a flat speaker is used as a sound source. Also, a soil moisture sensor, which measures the water content of the soil using the electric permittivity, is installed in the sand. From the experimental results of the vibration measurement and soil moisture sensors, we can confirm that the temporal changes of the water distribution in sand using the negative pressure irrigation system in both the horizontal and vertical directions can be estimated using the propagation velocity of sound. Therefore, in the future, we plan to develop an insertion-type sound source and receiver using the acceleration sensors, and we intend to examine whether our method can be applied even in commercial soil with growing plants.

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A Method for Estimating the Location of the Drill-Bit During Horizontal Directional Drilling Using a Giant-Magnetostrictive Vibrator

Cited by 10 publications

References 36 publications

Investigation of Thermal Conductivity and Heat Characteristics of Oil Sands Using Ultrasound Irradiation for Shortening the Preheating Time

Investigation of Thermal Conductivity and Heat Characteristics of Oil Sands Using Ultrasound Irradiation for Shortening the Preheating Time

The wear analysis model and rock-breaking mechanism of a new embedded polycrystalline diamond compact

Study on Water Distribution Imaging in the Sand Using Propagation Velocity of Sound with Scanning Laser Doppler Vibrometer

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