Identifying Challenges for Major Accident Prevention in Onshore Drilling Operations - A Case Study from a Middle East Oilfield

2020 ◽  
Author(s):  
Guicang Peng ◽  
Knut Erik Bang ◽  
Tore Markeset
Keyword(s):  
Middle East ◽  
Accident Prevention ◽  
Drilling Operations ◽  
Major Accident

IO Concepts as Contributing Factors to Major Accidents and Enablers for Resilience-Based Major Accident Prevention

2013 ◽  
pp. 353-369
Author(s):  
Eirik Albrechtsen ◽  
Audun Weltzien
Keyword(s):  
Decision Making ◽  
Accident Prevention ◽  
The Other ◽  
Organizational Resilience ◽  
Contributing Factors ◽  
Work Processes ◽  
Future Developments ◽  
Major Accident ◽  
The One

On the one hand, inadequacy of IO-concepts can, in combination with other factors, contribute to major accidents. On the other, work processes and technology within an IO-context contribute to prevent major accidents. This chapter shows how IO concepts can enable a resilience-based approach to major accident prevention by employing a case study of an onshore drilling center. Interviews indicate that drilling and well operations justify a resilience approach, as these operations are complex and dynamic. The case study shows how an onshore drilling support center facilitate adaptation to current and future situations at the sharp-end by providing decision-making support for the sharp-end by its ability to monitor what is going on, anticipate future developments, and look into past events and data. By use of the case study resilient capabilities and their required resources are identified. To ensure that inherent organizational resilience is managed and maintained adequately, there is a need to: 1) identify and refine inherent resilient capabilities and resources; and 2) develop methods and tools to manage resilience.

Press Propaganda and Subaltern Agents of Pan-Islamic Networks in the Muslim Mediterranean World prior to World War I

2018 ◽  
Author(s):  
Odile Moreau
Keyword(s):  
Middle East ◽  
World War I ◽  
North Africa ◽  
World War ◽  
Subaltern Studies ◽  
Resistance Movements ◽  
The Press ◽  
Mediterranean World ◽  
History Of

This chapter explores movement and circulation across the Mediterranean and seeks to contribute to a history of proto-nationalism in the Maghrib and the Middle East at a particular moment prior to World War I. The discussion is particularly concerned with the interface of two Mediterranean spaces: the Middle East (Egypt, Ottoman Empire) and North Africa (Morocco), where the latter is viewed as a case study where resistance movements sought external allies as a way of compensating for their internal weakness. Applying methods developed by Subaltern Studies, and linking macro-historical approaches, namely of a translocal movement in the Muslim Mediterranean, it explores how the Egypt-based society, al-Ittihad al-Maghribi, through its agent, Aref Taher, used the press as an instrument for political propaganda, promoting its Pan-Islamic programme and its goal of uniting North Africa.

Fracture Modelling Using Seismic Based Fracture Intensity Volume, a Case Study in Middle East

2013 ◽  
Author(s):  
Mu Hansheng ◽  
Liu Chuanxi ◽  
Li Peng ◽  
Pang Huihua
Keyword(s):  
Middle East ◽  
Fracture Intensity

scholarly journals Rotary steerable systems: mathematical modeling and their case study

2021 ◽  
Vol 11 (6) ◽  
pp. 2743-2761
Author(s):  
Caetano P. S. Andrade ◽  
J. Luis Saavedra ◽  
Andrzej Tunkiel ◽  
Dan Sui
Keyword(s):  
Directional Drilling ◽  
Steering Control ◽  
Fundamental Physics ◽  
Drilling Tools ◽  
Drilling Operations ◽  
Beam Bending ◽  
Extended Reach Drilling ◽  
And Control ◽  
2D And 3D

AbstractDirectional drilling is a common and essential procedure of major extended reach drilling operations. With the development of directional drilling technologies, the percentage of recoverable oil production has increased. However, its challenges, like real-time bit steering, directional drilling tools selection and control, are main barriers leading to low drilling efficiency and high nonproductive time. The fact inspires this study. Our work aims to contribute to the better understanding of directional drilling, more specifically regarding rotary steerable system (RSS) technology. For instance, finding the solutions of the technological challenges involved in RSSs, such as bit steering control, bit position calculation and bit speed estimation, is the main considerations of our study. Classical definitions from fundamental physics including Newton’s third law, beam bending analysis, bit force analysis, rate of penetration (ROP) modeling are employed to estimate bit position and then conduct RSS control to steer the bit accordingly. The results are illustrated in case study with the consideration of the 2D and 3D wellbore scenarios.

scholarly journals Assessing the Relation between Mud Components and Rheology for Loss Circulation Prevention Using Polymeric Gels: A Machine Learning Approach

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1377
Author(s):  
Musaab I. Magzoub ◽  
Raj Kiran ◽  
Saeed Salehi ◽  
Ibnelwaleed A. Hussein ◽  
Mustafa S. Nasser
Keyword(s):  
Machine Learning ◽  
Rheological Properties ◽  
Nearest Neighbor ◽  
Drilling Fluid ◽  
Gradient Boosting ◽  
K Nearest Neighbor ◽  
Wide Range ◽  
Machine Learning Approach ◽  
Drilling Operations

The traditional way to mitigate loss circulation in drilling operations is to use preventative and curative materials. However, it is difficult to quantify the amount of materials from every possible combination to produce customized rheological properties. In this study, machine learning (ML) is used to develop a framework to identify material composition for loss circulation applications based on the desired rheological characteristics. The relation between the rheological properties and the mud components for polyacrylamide/polyethyleneimine (PAM/PEI)-based mud is assessed experimentally. Four different ML algorithms were implemented to model the rheological data for various mud components at different concentrations and testing conditions. These four algorithms include (a) k-Nearest Neighbor, (b) Random Forest, (c) Gradient Boosting, and (d) AdaBoosting. The Gradient Boosting model showed the highest accuracy (91 and 74% for plastic and apparent viscosity, respectively), which can be further used for hydraulic calculations. Overall, the experimental study presented in this paper, together with the proposed ML-based framework, adds valuable information to the design of PAM/PEI-based mud. The ML models allowed a wide range of rheology assessments for various drilling fluid formulations with a mean accuracy of up to 91%. The case study has shown that with the appropriate combination of materials, reasonable rheological properties could be achieved to prevent loss circulation by managing the equivalent circulating density (ECD).

Higher education, post-conflict democratization and the legacies of authoritarian rule: The Tripoli University Programme for Rebuilding Libya

2021 ◽  
pp. 174619792098136
Author(s):  
Sansom Milton
Keyword(s):  
Higher Education ◽  
Middle East ◽  
Civic Education ◽  
Authoritarian Rule ◽  
Post Conflict ◽  
Transitional Processes ◽  
The Arab Spring ◽  
The Relationship

In this paper, the role of higher education in post-uprising Libya is analysed in terms of its relationship with transitional processes of democratization and civic development. It begins by contextualising the Libyan uprising within the optimism of the ‘Arab Spring’ transitions in the Middle East. Following this, the relationship between higher education and politics under the Qadhafi regime and in the immediate aftermath of its overthrow is discussed. A case-study of a programme designed to support Tripoli University in contributing towards democratisation will then be presented. The findings of the case-study will be reflected upon to offer a set of recommendations for international actors engaging in political and civic education in conflict-affected settings, in particular in the Middle East.

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