A Novel Phase Transition Loss Circulation Solution for Severe Losses Scenario: Case Histories from Middle East and Africa

2020 ◽  
Author(s):  
Ajay Kumar Addagalla ◽  
Prakash Jadhav ◽  
Prahlad Yadav ◽  
Pranjal Sarmah ◽  
Iain Maley ◽  
...  
Keyword(s):  
Phase Transition ◽  
Middle East ◽  
Case Histories

Simple but Effective: A Case History Demonstrating Enhanced Performance and Simplified Logistics from New Rotary Steerable

2021 ◽  
Author(s):  
Marco A Aburto Perez ◽  
Anurag S Yadav ◽  
Steven R Farley
Keyword(s):  
Middle East ◽  
Large Diameter ◽  
Lessons Learned ◽  
Modular Construction ◽  
Case Histories ◽  
Design Elements ◽  
Local Content ◽  
Local Supply ◽  
Manufacturing Assembly ◽  
Target Depth

Abstract Based on input from key operators in the Middle East region, a new rotary steerable system (RSS) was launched after a compressed development schedule. This paper describes the development and introduction of the larger tool sizes needed for both onshore and offshore hole sections, including hole sizes from 12 in. and up, in the Middle East. It also outlines the deliberate design of the tool for local assembly and repair. Large diameter (9-1/2 and 11 in.) RSS designs used an existing, smaller design for Middle East applications in both offshore and onshore wells as a basis. When designing these new sizes, engineers took note of lessons learned with smaller sizes of the tool and incorporated design elements for local manufacturing, assembly, and repair. The resulting simple, modular construction enables increased levels of local content and provides for significant reductions in transportation, and therefore associated emissions. Of course, although local content and sustainability are highly desirable, performance is essential, and this paper describes case histories demonstrating how well the new tool worked in real-world Middle East applications. In one notable example, the newly introduced 9 1/2-in. diameter RSS was used to drill an offshore section in the Gulf of Arabia. The tool was mobilized after two older generation RSS had become stuck for days. Consisting primarily of argillaceous limestone, the formation had a history of stuck-pipe events. The new RSS was recommended for this application because of a slicker construction, with a fully rotational bias unit, minimal bottom hole assembly (BHA) stabilization, and an optimized junk slot area, which together help to reduce stuck-pipe risks. The tool drilled to the target depth in a single run, thereby achieving all directional requirements. Notably, after reaching the target depth, the assembly was tripped out of the hole without any requirement for backreaming. This seamless exit, in turn, indicated achieving a smooth wellbore. Other case histories demonstrate results with both new sizes of this tool. The paper also discusses in detail the ability to repair locally and engage the local supply chain. Specifically with Middle East applications in mind, a new, simple RSS design in large diameter versions has demonstrated success in offshore and onshore applications across the region. The design has also proven capabilities for manufacturing and repair local to operations, which enables maximizing in-country value, optimizing use of the tools, and energizing local supply chains.

Recent Case Histories of Multilateral Systems Enabling Thru Tubing Intervention in the Middle East

2021 ◽  
Author(s):  
Benjamin Butler ◽  
Matthew Kelsey ◽  
Baidy Racine
Keyword(s):  
Middle East ◽  
Lessons Learned ◽  
Recent Case ◽  
Case Histories ◽  
Well Completion ◽  
Track Record ◽  
System A ◽  
Single String ◽  
High Level ◽  
The Cost

Abstract Historically, the ability to perform intervention on multilateral wells has been limited. While multilateral (ML) well construction technologies have progressed to a high level of reliability, multilateral systems that enabled intervention during the life of well had a more limited track record. Intervention outcomes after prolonged periods of production were less consistent. This lack of technologies with sufficient intervention case histories meant that generally multilateral well architecture was not selected in applications where thru tubing intervention was a requirement. In recent years, multilateral well architecture has continued to increase in demand, with more ML wells drilled and completed in the last five years than any other five-year period in the technology's history. With this increased demand has come industry enthusiasm to further mature its intervention capabilities. This paper will review two recent case histories of separate multilateral well completion systems that enable intervention. This opens up new potential for the industry to take advantage of the cost reductions achieved with multilaterals in a much larger scope of well applications. Two separate completion systems will be covered in this paper, System A installed in a cemented multilateral junction and system B, a completion that creates a hydraulically isolated junction via either a dual string completion or a single string completion that splits into two strings. These case histories were exectuted in 2017 to 2019, and interventions were performed after one to two years of production. Detailed in each case study will be an overview of the equipment, the operational sequence, intervention outcome, and any lessons learned or improvements. The systems have demonstrated themselves as a reliable method to access laterals in non-ideal downhole environments where debris is present after the well has been on production. The tubing sizes for the case studies are 3-1/2" and 4-1/2". In each of these wells, the following operations have been successfully performed: drift testing, acid stimulation through coil tubing and breaking of a ceramic disc. Both slickline and coil tubing have been used for the interventions and in some cases with tractors. Junction inclinations range from 1 to 43 degrees. Plans for ongoing installations for the systems are being executed in the Middle East Region. Further, expansion of the system A capabilities by integrating it with other existing technologies is also planned. This will enable projects such as the installation of a trilateral well with flow control and intervention for each individual leg, and also the conversion of existing single bore wells to multilateral with intervention capability.

Regional Variations on a Global Theme: Formatting Television for the Middle East and beyond

2009 ◽  
Vol 132 (1) ◽  
pp. 105-117 ◽  
Author(s):  
Amos Owen Thomas
Keyword(s):  
Middle East ◽  
Case Histories ◽  
Regional Variations ◽  
Religious Conservatism ◽  
The World ◽  
Political Freedoms

The issue of cultural interchange of foreign programming is growing ever more pertinent within the deregulated television industries of emergent economies and regions. Adaptation of global program formats has become a common practice around the world, though it has proven more challenging in the Middle East, in a context of variable religious conservatism, political freedoms and economic affluence. Drawing on case histories of format adaptations that have experienced differing degrees of success within the region, this paper develops inductively a typology for contingent creative strategies, namely replica, indigene, collage and hybrid. With an eye to targeting both advertisers and audiences, television networks and program producers might thus cater to diverse cultural sensibilities across sub-regional audiences when broadcasting regionally. Finally, the paper highlights under-researched issues surrounding media reproduction for geolinguistic regions.

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