Directional Difficulty Index Across Different Offshore Fields in a National Oil Operating Company in the Middle East Reveals Market Variations and the Adoption of Disruptive Technologies Impact in Drilling Operations

2020 ◽  
Author(s):  
Knut Johannes Ness ◽  
Juan Jose Exposito Gonzalez ◽  
Bilal Iftikhar Choudhry ◽  
Javier Ernesto Torres Premoli ◽  
Erwan Couzigou
Keyword(s):  
Middle East ◽  
Disruptive Technologies ◽  
Drilling Operations ◽  
Difficulty Index ◽  
Operating Company

scholarly journals UAE‘s Strategy Towards Most Cyber Resilient Nation

2019 ◽  
Vol 8 (12) ◽  
pp. 2803-2809 ◽  
Keyword(s):  
Middle East ◽  
Cyber Attacks ◽  
Technology Usage ◽  
Disruptive Technologies ◽  
Cyber Threats ◽  
Key Stakeholders ◽  
The World ◽  
World Class

With the fast-paced industrial and Techni revolution, smart nations are emerging with the idea of integrating the developing technologies, like IoT and CPS, to make communications and networks easier and closely interconnected. With increasing technology usage globally, the UAE envisions transitioning into a global smart nation by innovating and deploying world class disruptive technologies for the better connectivity digitally. However, the frequency of cyber threats has also increased drastically with this ever-evolving technology. For a nation like UAE that is transforming into a digital nation at a rapid speed, while still having stakeholders with poor cybersecurity practices, UAE stands as a strong target for attacks by malicious hackers. With cyber-attacks becoming the top most concern globally, especially in the Middle East, UAE has built certain strategies to combat the evolving issue of cybersecurity. In this paper, the authors suggest that just as the collaboration of the key stakeholders – government, academics, industry and society – depicted under the Quadruple Model is needed to develop an innovative and creative nation, so is their coordination required to protect that nation from the potential cyber threats. In light of this theory, the four key stakeholders of the UAE are analyzed for their cybersecurity practices, initiatives and coordination to prove UAE’s commitment towards becoming the most cyber resilient nation in the world.

Use of Obturating Pills Combined with Low Concentration Acid Pills to Overcome Differential Stuck Challenges in Highly Deviated Wells

2021 ◽  
Author(s):  
Salim Abdulla Al Ali ◽  
Freddy Alfonso Mendez Gutierrez ◽  
Mohamed Al Zaabi ◽  
Takahiro Toki ◽  
Hisaya Tanaka ◽  
...  
Keyword(s):  
High Volume ◽  
High Flow ◽  
Differential Pressure ◽  
Low Concentration ◽  
Drilling Operations ◽  
Problematic Area ◽  
Low Torque ◽  
Operating Company ◽  
Thief Zone ◽  
Available Volume

Abstract In 2020, A Major Offshore Operating Company in UAE faced a high differential pressure stuck event. This took place, during the execution of formation evaluation with a conveyed pipe sampling BHA. It is well known that after a differentially stuck pipe event happens, the success ratio will be time dependent (i.e. the less time a pipe remains stuck, the more chances there will be for it to become released) and the chances of releasing the BHA are always limited to the logging tools tensile limitations. One of the most common and successful methods to release differentially stuck BHA's specifically in limestone formations is by pumping and soaking acid pills. However, under such a high differential pressure environment, the use of acid may induce losses in the so called "thief zones", causing worse problems. The standard release procedure started by working the string within the tensile limits, followed by pumping acid pills (using the available volume mobilized before spudding each drilling section). During the first acid pills pumped to attempt to release the stuck pipe, loss volume pump rates, acid pill position(s) and coverage in the annulus was assessed and evaluated. Based on the results it was observed that the thief zone was in direct contact with the Pipe Conveyed circulation port, at the latching assembly. This then created a situation whereby, the acid pills were lost immediately after the acid came into contact with the formation. Utilizing low acid concentration pills also had the same effect. The solution was to pump an Obturating pill made-up of a weighting agent as a spacer behind the high volume, low concentration acid pill with crosslinking divergent chemicals, pumped at a high flow rate. This solution reduced the acid losses across the thief zone and once the Obturating pill came into contact with the loss zone, it facilitated the seal and cured the losses, by allowing the acid to move up the annulus until it reached the differentially stuck point and soaked across the problematic area. Once the acid pill was successfully placed at the required location using this method, the string was worked and successfully released. This combination of low concentration acid along with crosslinking divergent chemicals coupled with the Obturating pill behind the acid helped a major offshore operating company to pump the acid pill under partial losses only, to regain full circulation after only 10 bbl. of Obturating pill had entered inside the annulus. It allowed the acid pill to react across the stuck point, while keeping the string under low torque and compression. The operator was able to release the sampling BHA and bring it back to surface avoiding a lost in hole cost of around 4 MM$. The Obturating pill combined with low concentration CDC acid pill is proven to be a successful method in drilling operations when trying to release differentially stuck BHA's within a wellbore.

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