Results 51 to 60 of about 180,798 (213)

Study on Three-Dimentional Vibration Response Characteristics of Drilling String in Deepwater Riserless Drilling

Shiyou jixie, 2022
In deepwater riserless drilling system,drill string in seawater is affected by external ocean load,torque of top rotary table and bottom bit-formation force,so it is prone to vibrate in the three directions of longitudinal,transverse,and torsional,making
Liu Jun, Chen Feiyu, Li Jian, Guo Xiaoqiang   +3 more
doaj  

Adaptive Responses of Tropical Crops: A Multi‐Scale Omics Integrated Perspective

Advanced Science, Volume 13, Issue 47, 24 August 2026.
Tropical crops integrate genomic, morphological, physiological, and ecological adaptations to thrive under extreme and variable environments. This review highlights how natural selection, domestication, and breeding shape stress resilience, resource‐use strategies, and productivity in sugarcane, banana, cassava, rubber and oil palm, offering new routes
Peilin Wang, Chenhui Li, Dongjiao Wang, Qibin Wu, Zhen Zeng, Huiming Guo, Han Cheng, Songbi Chen, Hongxing Cao, Hongmei Cheng, Jianghui Xie, Youxiong Que   +11 more
wiley   +1 more source

Deepwater port license application.

, 1978
531 p.This document is an application for receiving a deepwater port licence. This document contains reasoning and exhibits in support of this application.
Texas Deepwater Port Authority.
core   +1 more source

Envelopes for connected operation of the deepwater drilling riser

Petroleum Exploration and Development, 2012
The common critical criterion and nonlinear search method were adopted for the study of connected operation envelopes of deepwater drilling riser and a riser-wellhead-conductor integral finite element model was established.
Shaodong JU, Yuanjiang CHANG, Guoming CHEN, Xiuquan LIU, Liangbin XU, Rongyao WANG   +5 more
doaj   +1 more source

Coastal Marine Carbon and Air‐Sea Fluxes Quantified From pH Sensors on an Extended AUV Deployment

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract For the first time, the Autosub Long Range (ALR) completed a fully autonomous, long‐distance (2,000 km) scientific mission, delivering new insight into coastal carbonate dynamics and air‐sea CO2 ${\text{CO}}_{2}$ fluxes. Equipped with a suite of oceanographic sensors, including a Lab‐on‐Chip (LOC) pH sensor and a Sea‐Bird SeaFET pH sensor, the
Emily M. Hammermeister, Cathy Wimart‐Rousseau, Stathys Papadimitriou, Pablo Trucco‐Pignata, Edward Chaney, Robert Templeton, Alexander B. Phillips, Socratis Loucaides   +7 more
wiley   +1 more source

Methodology for kick tolerance calculation and well killing in deepwater drilling

Natural Gas Industry B, 2016
Kick tolerance is a key parameter to indicate whether shut-in operation can be carried out safely and a proper well killing method should be chosen in well drilling.
Yequan Jin, Cheng Li, Qian Wu
doaj   +1 more source

Bacteria-Oil Microaggregates Are an Important Mechanism for Hydrocarbon Degradation in the Marine Water Column

mSystems, 2021
Vast quantities of oil-associated marine snow (MOS) formed in the water column as part of the natural biological response to the Deepwater Horizon drilling accident. Despite the scale of the event, uncertainty remains about the mechanisms controlling MOS
Amanda M. Achberger, Shawn M. Doyle, Makeda I. Mills, Charles P. Holmes, Antonietta Quigg, Jason B. Sylvan   +5 more
doaj   +1 more source

Riverine Biogeochemical Exports From Major Watersheds to the Northwest Patagonian Estuarine Network

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 8, August 2026.
Abstract River discharge considerably influences marine ecosystems through hydrological and biogeochemical drivers. Measuring baseline variability of riverine inputs, and their relation to anthropogenic land‐use impacts and global climate stressors affecting watersheds is therefore crucial for managing coastal marine ecosystems.
Sage Fox, Jorge León‐Muñoz, Brian Reid, Anna Astorga‐Roine, Rodrigo Aguayo, Paulo Moreno‐Meynard, Lydia Blanchet, David E. Butman   +7 more
wiley   +1 more source

Gas kick and lost circulation risk identification method with multi-parameters based on support vector machine for drilling in deep or ultradeep waters

Engineering Science and Technology, an International Journal
In deepwater and ultra-deepwater drilling, formation pressures are complex and the drilling fluid density window is narrow, which makes it prone to well control incidents such as kicks and lost circulation.
Kai Feng, Shujie Liu, Zhiming Yin, Yi-long Xu, Meipeng Ren, Deqiang Tian, Bangtang Yin, Baojiang Sun   +7 more
doaj   +1 more source

An experimental approach to assess the combined effects of multiple stressors on a large vertebrate species

Conservation Biology, Volume 40, Issue 4, August 2026.
Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta, Catriona M. Harris, Lori H. Schwacke, Len Thomas, Jason B. Allen, Aaron A. Barleycorn, Marco Casoli, Jonathan Crossman, Laura Aichinger Dias, Laura Engleby, Erin LaBrecque, Jenny A. Litz, Katherine A. McHugh, Patrick J. O. Miller, Michael J. Moore, Theoni Photopoulou, Brian M. Quigley, Cynthia R. Smith, Brandon L. Southall, Todd R. Speakman, Ryan Takeshita, Christina N. Toms, Randall S. Wells, Eric S. Zolman, Peter L. Tyack   +24 more
wiley   +1 more source