| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Research Abstract |
Drilling data acquisition system was established onboard the scientific drilling vessel Chikyu to acquire the actual drilling data continuously. Utilizing the drilling data, evaluation of dynamic stress actually exerted on the drill pipe was examined, and consideration was conducted by comparing with the theoretical stress. In addition, evaluation of the performance of the heave compensator, which is equipment to mitigate the propagation of vessel heave motion to the drill pipe, was conducted. The knowledge and drilling data contribute to the strength evaluation and the drilling criteria plan for actual drilling programs of the Chikyu.
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