The Gulf of Mexico Subsalt Wells Atlas: A Comprehensive Review and Lessons Learned

2013 ◽  
Author(s):  
Ken Williams ◽  
Saad T Saleh ◽  
AiJaz Rizvi
2019 ◽  
Vol 76 (9) ◽  
pp. 1624-1639 ◽  
Author(s):  
Skyler R. Sagarese ◽  
William J. Harford ◽  
John F. Walter ◽  
Meaghan D. Bryan ◽  
J. Jeffery Isely ◽  
...  

Specifying annual catch limits for artisanal fisheries, low economic value stocks, or bycatch species is problematic due to data limitations. Many empirical management procedures (MPs) have been developed that provide catch advice based on achieving a stable catch or a historical target (i.e., instead of maximum sustainable yield). However, a thorough comparison of derived yield streams between empirical MPs and stock assessment models has not been explored. We first evaluate trade-offs in conservation and yield metrics for data-limited approaches through management strategy evaluation (MSE) of seven data-rich reef fish species in the Gulf of Mexico. We then apply data-limited approaches for each species and compare how catch advice differs from current age-based assessment models. MSEs identified empirical MPs (e.g., using relative abundance) as a compromise between data requirements and the ability to consistently achieve management objectives (e.g., prevent overfishing). Catch advice differed greatly among data-limited approaches and current assessments, likely due to data inputs and assumptions. Adaptive MPs become clearly viable options that can achieve management objectives while incorporating auxiliary data beyond catch-only approaches.


2021 ◽  
Author(s):  
Hector Hugo Vizcarra Marin ◽  
Alex Ngan ◽  
Roberto Pineda ◽  
Juan Carlos Gomez ◽  
Jose Antonio Becerra

Abstract Given the increased demands on the production of hydrocarbons and cost-effectiveness for the Operator's development wells, the industry is challenged to continually explore new technology and methodology to improve drilling performance and operational efficiency. In this paper, two recent case histories showcase the technology, drilling engineering, and real-time optimization that resulted in record drilling times. The wells are located on shallow water in the Gulf of Mexico, with numerous drilling challenges, which typically resulted in significant Non-Productive Time (NPT). Through close collaboration with the Operator, early planning with a clear understanding of offset wells challenges, well plan that minimize drilling in the Upper Cretaceous "Brecha" Formation were formulated. The well plan was also designed to reduce the risk of stuck pipe while meeting the requirements to penetrate the geological targets laterally to increase the area of contact in the reservoir section. This project encapsulates the successful application of the latest Push-the-Bit Rotary Steerable System (RSS) with borehole enlargement technology through a proven drilling engineering process to optimize the drilling bottomhole assembly, bit selection, drilling parameters, and real-time monitoring & optimization The records drilling times in the two case histories can be replicated and further improved. A list of lessons learned and recommendations for the future wells are discussed. These include the well trajectory planning, directional drilling BHA optimization, directional control plan, drilling parameters to optimize hole cleaning, and downhole shocks & vibrations management during drilling and underreaming operation to increase the drilling performance ultimately. Also, it includes a proposed drilling blueprint to continually push the limit of incremental drilling performance through the use of RSS with hydraulics drilling reamers through the Jurassic-age formations in shallow waters, Gulf of Mexico.


The rising expansion and diversification in the cybercrime arena have become difficult obstacles in order both to understand the extent of embedded risks and to define efficient policies of prevention for corporations, institutions, and agencies. The present study represents a comprehensive review of the origin, typologies, and developments of cybercrime and hacker subculture. This chapter confronts the issues by describing and discussing different criteria of classification in the field and by providing a broad list of definitions and an analysis of the cybercrime practices. A conceptual taxonomy of cybercrime is described as well. Common categories include the digital device is the target to commit the crime, the digital device is used as a tool to perpetrate the felony, or a digital device is an incidental condition to the execution of a crime. The authors complete their study by analyzing lessons learned and future actions that can be undertaken to tackle cybercrime and harden cybersecurity at all levels.


2005 ◽  
Vol 2005 (1) ◽  
pp. 719-723 ◽  
Author(s):  
CJ Beegle-Krause ◽  
Walton (Tad) Lynch

ABSTRACT In May of 2003 a drilling riser break at a BP development well in 6015 feet (1875 m) of water in the Gulf of Mexico initiated a dialog between BP responders and NOAA/HAZMAT modelers about the potential consequences of a deep well blowout. Human health and safety issues were the key concern for BP responders, particularly those planning potential on water operations. Where might the gas surface? Would the natural gas (propane and methane) at the water's surface pose an explosion or asphyxiation hazard? Was there a potential for the gas bubbles to sink any of the response vessels? These discussions did not have as cut-and-dry answers as either BP or NOAA would have preferred. During the planning for BP's attempt to bring the well back into operation, the General NOAA Oil Modeling Environment (GNOME) with the Clarkson Deep Oil and Gas model (CDOG, Zheng et al 2003, Chen and Yapa 2003 and Yapa and Cheng 2004) were run. The data required for modeling a deep spill is more extensive then for a surface oil trajectory and was the subject of much discussion between BP responders and NOAA/HAZMAT. As a result, NOAA/HAZMAT created a data summary request sheet (Appendix 1) to guide the BP responders in what data was needed, and provided a point of discussion for implications of missing data.


2013 ◽  
Vol 79 (2) ◽  
pp. 346-358 ◽  
Author(s):  
Vafa Rahimi-Movaghar ◽  
Seyed Behzad Jazayeri ◽  
Marjan Alimi ◽  
Kazem Abbassioun ◽  
Abbas Amirjamshidi

Author(s):  
LCDR John LaMorte ◽  
LT Rebecca Brooks

ABSTRACT During the evening of 20 April, 2010 U.S. Coast Guard District Eight Command Center watch standers received a report of an explosion aboard the Deepwater Horizon (DWH), an oil rig working on the Macondo oil well approximately 42 miles Southeast of Venice, LA (OSC Report, 2011). The explosion on board the DWH and resulting fires eventually destroyed the oil rig and caused it to sink into the Gulf of Mexico. Eleven crewmembers lost their lives in the tragic events that unfolded that night, and one of the nation's largest environmental disasters would soon follow. Estimates of the oil discharged from the Macondo oil well were between 12,000 and 25,000 barrels per day, and the response involved approximately 47,000 oil spill response personnel, 6,870 vessels, approximately 4.12 million feet of boom, and 17,500 National Guard personnel, five states (OSC Report, 2011). The massive oil spill lasted 87 days and estimates suggest that more than 200 million gallons of oil was discharged into the Gulf of Mexico, which stands as the largest oil spill event in U.S. history. From these massive response operations came important lessons learned for SONS event planning, preparedness, and response, as it became apparent during DWH response operations that oil spill response governance and doctrine was not well understood across the whole-of-government. This issue was well documented in the National Incident Commander's report and several recommendations were identified to address this issue. This paper will explore the steps taken within the U.S. Coast Guard's (USCG) SONS Exercise and Training Program to promote a better understanding of oil spill response governance and doctrine among Cabinet-level senior leadership and the interagency representatives that will ultimately be involved when the next SONS event happens.


2020 ◽  
Vol 7 (2) ◽  
pp. 54-62
Author(s):  
Md.Ashraful Azam Khan ◽  
Haslinda Hashim

Purpose of the study: This study aims to provide an overview of the key issues and challenges faced by the COVID-19 pandemic in the Malaysian tourism and hospitality industry, lessons learned from its devastating effects on the industry, and to contemplate possible solutions and strategies for post-pandemic recovery from a global perspective. Methodology: This is a conceptual study. In doing so, a comprehensive review of the most recent selected literature was gathered from academic and online news portal and relevant online platforms to extract the current state of the art knowledge. Based on the conceptual analysis, this study unfolds the uncertainties about the critical outcomes of the past events to provide some significant insights focusing on the COVID-19 pandemic, which is denoted as post-crisis analysis based on current and past events. Main Findings: Based on the comprehensive review of the related literature this paper finds that both from the academic and industry perspective that the emphasis should be given to study, teach and engage with current tourism-related concepts and theories to provide a holistic pedagogy to rebuild and transform the tourism and hospitality industry rather than maintaining the current tourism and hospitality trajectory in the post-Covid 19 pandemic age. Applications of this study: The practical implications of this paper is to assist the tourism and hospitality managers by providing a glimpse of the current and forthcoming challenges in the industry and to provide critical recovery strategies in the post-pandemic phase for the related tourism and hospitality operators to plan effective business strategies, activities and policies to adopt the new normal. Novelty/Originality of this study: This study exposes the vulnerability of an already gruesome Malaysia tourism and hospitality industry in the context of the Covid-19 pandemic based on the post-crisis analysis in relation to the current and past events, and consequently suggested some critical sustainable resilience strategies for a resurgence in the post-pandemic period from a global point of view.


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