An Outlook of Oil and Gas Drilling Operations in Kenya – Trends and Challenges
Antony Fundia Simbiri,
Ogbonna Friday Joel,
Emmanuel Emeka Okoro,
Daniel Okang’a Oyoo
Issue:
Volume 10, Issue 3, May 2022
Pages:
68-81
Received:
15 December 2021
Accepted:
15 January 2022
Published:
31 May 2022
DOI:
10.11648/j.ogce.20221003.11
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Abstract: In 2012, Kenya has discovered oil deposits that have placed it among the global oil exporters. Huge expectations from this discovery among all the stakeholders have ignited unmatched interest both locally and internationally. The expected socio-economic changes for the nation, however, need to be surgically addressed and assessed. This paper, therefore, aims to explore and assess the drilling division of the upstream sub-sector of the oil and gas industry in Kenya. It analyses the history, exploration, development, and future potential of drilling in the oil and gas industry. To achieve this objective, the article begins by explaining the historical review of oil and gas operations in Kenya, the legal ecosystem of drilling operations, and the drilling operations. Additionally, definitions, types of drilling fluids, and drilling additives are discussed. Finally, the article evaluates the challenges facing oil and gas drilling operations in Kenya and outlines the necessary recommendations for its potential development.
Abstract: In 2012, Kenya has discovered oil deposits that have placed it among the global oil exporters. Huge expectations from this discovery among all the stakeholders have ignited unmatched interest both locally and internationally. The expected socio-economic changes for the nation, however, need to be surgically addressed and assessed. This paper, there...
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An Analysis and Control method on Preventing Gas Channeling in Cementing Operation
Peiqing Lu,
Sang Laiyu,
Shiming Zhou,
Xiaojiang Li
Issue:
Volume 10, Issue 3, May 2022
Pages:
82-89
Received:
9 July 2022
Accepted:
26 July 2022
Published:
4 August 2022
DOI:
10.11648/j.ogce.20221003.12
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Abstract: While waiting on cementing, the cement slurry weight loss can easily lead to early annular gas channeling and sustained casing pressure. Studying the weight loss process is an important means for reducing gas channeling risk. Due to complex physical and chemical changes during cement hydration process, conventional pressure reduction prediction models based on static gel strength theory produce distorted fits. Hence, a new dimensionless prediction model has been established through a large-scale physical experiment, and the effects of relevant parameters require further investigation. In this study parameters were investigated through sensitivity analysis with a styrene-acrylic latex cement slurry system as the study object. The results showed that a high temperature and a deep wellbore depth could cause the cement slurry to lose weight rapidly, whereas a high gas pressure and a high latex content could alleviate the weight loss trend. Weight loss rate was the most sensitive to changes in temperature, followed by wellbore depth and gas pressure. The latex content had a relatively insignificant effect but could be artificially adjusted. An anti-gas channeling method that primarily involves optimization of latex content and experimental evaluation of gas channeling was proposed. The results are reference significance to guiding anti-gas channeling cementing.
Abstract: While waiting on cementing, the cement slurry weight loss can easily lead to early annular gas channeling and sustained casing pressure. Studying the weight loss process is an important means for reducing gas channeling risk. Due to complex physical and chemical changes during cement hydration process, conventional pressure reduction prediction mod...
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