Performance of the Wireline Heave Compensation System Onboard D/V &lt;i&gt;JOIDES Resolution&lt;/i&gt;

Iturrino, G. J.; Liu, T.; Goldberg, D.; Anderson, L.A.; Evans, H.; Fehr, Aaron T.; Guèrin, G.; Inwood, J.; Lofi, J.; Malinverno, A.; Morgan, Sally; Mrozewski, S.; Slagle, Angela L.; Williams, Talcott

doi:10.5194/sd-15-46-2013

Cited by 7 publications

(8 citation statements)

References 3 publications

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“…For technical reasons, a heave compensator, commonly used to attenuate the vertical movements of the ship from the heave during the drilling operations, has to be momentarily shut down during the APC shooting. The short coring time reduces most heave effects [ Huey , ; Iturrino et al ., ], but may still affect the core integrity. The core barrel and its acquired sample are then retrieved using the wireline cable back to the vessel, where it is transferred with a high‐speed winch onto the ship's deck for processing.…”

Section: Apc Coring Techniquementioning

confidence: 99%

“…Heave is ship motion induced by waves. Its effects on the boat and attached drill string were a very important problem during early drilling operations [ Ruddiman et al ., ; Goldberg et al ., ; Guerin and Goldberg , ; Huey , ], and the common use of passive heave compensators in combination with GPS positioning aboard the R/V JOIDES Resolution reduce the heave effects to <50 cm during drilling under normal weather conditions [ Iturrino et al ., ]. For technical reasons, the heave compensators have to be stopped during the few seconds of shooting during APC operations.…”

Section: Types Of Coring Disturbances and Their Recognitionmentioning

confidence: 99%

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Coring disturbances in IODP piston cores with implications for offshore record of volcanic events and the Missoula megafloods

Jutzeler

White

Talling

et al. 2014

Geochem. Geophys. Geosyst.

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Piston cores collected from IODP drilling platforms (and its predecessors) provide the best long-term geological and climatic record of marine sediments worldwide. Coring disturbances affecting the original sediment texture have been recognized since the early days of coring and include deformation resulting from shear of sediment against the core barrel, basal flow-in due to partial stroke, loss of stratigraphy, fall-in, sediment loss through core catchers, and structures formed during core recovery and on-deck transport. The most severe disturbances occur in noncohesive (sandy) facies, which are particularly common in volcanogenic environments and submarine fans. Although all of these types of coring disturbances have been recognized previously, our contribution is novel because it provides an easily accessible summary of methods for their identification. This contribution gives two specific examples on the importance of these coring disturbances. We show how suck-in of sediments during coring artificially created very thick volcaniclastic sand layers in cores offshore Montserrat and Martinique (Lesser Antilles). We then analyze very thick, structureless sand layers from the Escanaba Trough inferred to be a record of the Missoula megafloods. These sand layers tend to coincide with the base of core sections, and their facies suggest coring disturbance by basal flow-in, destroying the original structure and texture of the beds. We conclude by outlining and supporting IODP-led initiatives to further reduce and identify coring disturbances and acknowledge their recent successes in drilling challenging sand-rich settings, such as during IODP Expedition 340.

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Section: Apc Coring Techniquementioning

confidence: 99%

Section: Types Of Coring Disturbances and Their Recognitionmentioning

confidence: 99%

Coring disturbances in IODP piston cores with implications for offshore record of volcanic events and the Missoula megafloods

Jutzeler

White

Talling

et al. 2014

Geochem. Geophys. Geosyst.

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“…The risk of damaging downhole instruments is also increased. A WHC system was thus designed to compensate for the vertical motion of the ship and maintain a steady motion of the logging tools to ensure highquality logging data acquisition Iturrino et al, 2013). The WHC uses a vertical accelerometer (motion reference unit [MRU]) positioned under the rig floor near the ship's center of gravity to calculate the vertical motion of the ship with respect to the seafloor.…”

Section: Wireline Heave Compensatormentioning

confidence: 99%

Methods

Tada¹,

Murray²,

Zarikian³

et al. 2015

Proceedings of the IODP

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“…During wireline logging operations, the ship's heave and ocean conditions affect the wireline tension and tool position in the well. A wireline heave compensator (WHC) system is used in conditions of increased swell to maintain a steady motion of the logging tools and to ensure high-quality logging data acquisition (Liu et al, 2013;Iturrino et al, 2013). The WHC was used for all open hole logging operations regardless of sea state.…”

Section: Wireline Logging Operationsmentioning

confidence: 99%

Expedition 396 methods

Berndt¹,

Zarikian²,

Agarwal³

et al. 2023

Proceedings of the International Ocean Discovery Program

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publications.iodp.org • 3 known because of the deviation of the pipe below the ship, which can vary depending on water currents, tides, and water depth; the hole position is thus known typically within 10 m accuracy.Drilling sites were numbered according to the series that began with the first site drilled by the D/V Glomar Challenger in 1968. Starting with Integrated Ocean Drilling Program Expedition 301, the prefix "U" designates sites occupied by JOIDES Resolution. When drilling multiple holes at a site, hole locations are typically offset from each other by ~20 m. During Expedition 396, we offset holes at an average of 115 m, except for Site U1570, where holes were offset as far as 1772 m. Site U1570 was approved by EPSP as a 2 km long "ribbon" or transect west of Site U1569 with start and end coordinates. This ribbon provided an alternate coring strategy to Site U1569, where deep stratigraphic targets were outcropping at shallower subseafloor depths. A letter suffix distinguishes each hole drilled at the same site. The first hole drilled is assigned the site number modified by the suffix "A," the second hole takes the site number and the suffix "B," and so forth. During Expedition 396, 21 holes were drilled at 10 sites (U1565-U1574; see Figure F4 in the Expedition 396 summary chapter [Planke et al., 2023a]).

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Performance of the Wireline Heave Compensation System Onboard D/V <i>JOIDES Resolution</i>

Abstract: No abstract available. <br><br> doi:<a href="http://dx.doi.org/10.2204/iodp.sd.15.08.2013" target="_blank">10.2204/iodp.sd.15.08.2013</a>

Cited by 7 publications

References 3 publications

Coring disturbances in IODP piston cores with implications for offshore record of volcanic events and the Missoula megafloods

Coring disturbances in IODP piston cores with implications for offshore record of volcanic events and the Missoula megafloods

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Expedition 396 methods

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