Major Scientific Achievements of the Integrated Ocean Drilling Program

Becker, Keir

doi:10.1016/b978-0-444-62617-2.00001-3

Cited by 2 publications

(1 citation statement)

References 128 publications

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“…A riserless drilling system is typically adopted in the implementation of ocean drilling technology. 2 During the drilling process, the drill string in down hole is affected by the rock and well wall. Meanwhile, the drill string in water is directly affected by the marine environment load.…”

Section: Introductionmentioning

confidence: 99%

Study on dynamic characteristics of drill string in deep-water riserless drilling

Huang

Yang

et al. 2023

Advances in Mechanical Engineering

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The cost and security of ocean drilling are directly related to the efficient exploration and development of ocean resources. The riserless drilling system is usually adopted in the ocean drilling. With the consideration of marine environment load, a dynamic analysis model of drill string in deep-water riserless drilling is established. This model aims to analyze the dynamic characteristics of drill string in the water and down hole during the process of deep-water riserless drilling. The research results are as follows. For the drill string in water, its displacement increase with the increase of ocean current velocity, water depth, rotation speed, and WOB. But the rotation speed and WOB have less influence. The drill string in down hole shows the same pattern. However, the drill string in down hole is only affected near the mud line and the bit, and the rest of the drill string is almost unaffected. In deep-water riserless drilling, stress on the drill string at the wellhead, near the mudline, and at the bottom hole assembly (BHA) is complex. The safety of drill string at these locations should be given great attention.

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Section: Introductionmentioning

confidence: 99%

Study on dynamic characteristics of drill string in deep-water riserless drilling

Huang

Yang

et al. 2023

Advances in Mechanical Engineering

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VOLCORE, a global database of visible tephra layers sampled by ocean drilling

et al. 2020

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The VOLCORE (Volcanic Core Records) database is a collection of 34,696 visible tephra (volcanic ash and lithological or grain size variations) occurrences reported in the initial reports volumes of all of the Deep Sea Drilling Project (DSDP; 1966–1983), the Ocean Drilling Program (ODP; 1983–2003), the Integrated Ocean Drilling Program (IODP; 2003–2013) and the International Ocean Discovery Program (IODP; 2013-present) up to and including IODP Expedition 381. The combined international ocean drilling programmes (OD) have locations with global coverage. Cored tephra layers and tephra-bearing sediments span timescales from recent to ~150 million years in age. This database is a collection of information about reported visible tephra layers entirely or predominantly composed of volcanic ash. Data include the depth below sea floor, tephra thickness, location, and any reported comments. An approximate age was estimated for most (29,493) of the tephra layers using published age-depth models. The database can be used as a starting point for studies of tephrochronology, volcanology, geochemistry, studies of sediment transport and palaeoclimatology.

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Major Scientific Achievements of the Integrated Ocean Drilling Program

Cited by 2 publications

References 128 publications

Study on dynamic characteristics of drill string in deep-water riserless drilling

Study on dynamic characteristics of drill string in deep-water riserless drilling

VOLCORE, a global database of visible tephra layers sampled by ocean drilling

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