I have to be honest, it is only recently that I had the opportunity to place frequent cement plugs in such conditions and purpose. Yes, I did those only occasionally before … However, “Frequency” is important, and beside what everybody knows (so-called best practices) Frequency is how the significance of all the variables can be […]
Successful Well Cementing
The case of unawareness Vs. understanding What are the consequences of knowing the outcome of your cement job? Most people would say, that knowing the outcome allows the connection of execution and design with job model and assumptions — the path of perfection. Just to clarify, knowing the cement bond is just part of the […]
Mixing Energy or Shear Rate? The effect on Cement Slurry?
Back in 2016, I posted an article on laboratory testing for cement slurries. In this article, I briefly referred to the changes in the preparation of the slurry in the laboratory, to account for the additional mixing energy typical in small slurry volume jobs using a batch-mixer. (Like in coiled tubing/CT operations). A typical use […]
Drill deeper or just plug it off?
A quick reminisce… Over the years, I have had the opportunity to work with many drilling teams. I have to say, some of them still occupy a very special place in my heart. Not only because of the quality of the people I had the pleasure of working with; but also for the amazing things […]
Balance to succeed: Cement Plugs in losses situation
Loss circulation challenges During my time in Mexico, one of the main challenges That we faced was severe loss circulation. In new wells, due to the presence of fractured carbonates and low formation pressure (LPHT), several actions were usually in place. Examples include managed pressure cementing (cementing taking advantaged of MPD equipment/practices). Or the use […]
Some guidelines for Cement Plugs
Here are the primary considerations that need to be top of mind when dealing with cement plugs. We think that all the most relevant ones are here, and can serve as a revision checklist. We’d welcome any additional suggestions to add to the page. Use a cementing stinger and cover both the cement and spacer […]
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