For some time already, I have been receiving requests from friends and readers, mostly drilling engineers and well-site people, to provide a quick and fact-based tool to estimate the top of cement (and all cementing fluids) after a job. A tool that can also help during the design phase to identify where the cement (lead, […]
Workover Cementing Techniques. (2) Squeeze Cementing
Squeeze cementing is basically a filtration process that occurs during the placement of the cement slurry into a wellbore entry point (casing leak, existing perforations, etc.) under sufficient differential pressure. The cement slurry is held in place until it cures and establishes a hydraulic seal. Look at this picture in Squeeze Cementing Principles explaining the […]
Cement, Spacer, all there. But, the wiper plug where?
I know there is no need to remind the objectives of cementing job but, to be in context, let’s mention some of the main ones like; providing zonal isolation, structural support for the wellbore, and casing protection against corrosive fluids. Failing to meet these objectives could potentially have consequences, in terms of wellbore integrity, during […]
All you need to know about Bentonite in Cement Slurries
Let’s just have a quick overview regarding the bentonite. It is easy to find references online regarding bentonite as a cement extender, the way it works or I should say reacts and why additional water is required when using it as an extender. Here I will try to be simply explain. First of all, Use […]
New CemPRO+ Review
Following my CemPRO+ review post a little more than a two years ago, I have broadened my knowledge of this cementing application, not only providing engineering and post-job analysis to my customers but also and during some time, actively designing cement jobs in an on-going busy operation. Furthermore, I even found myself in the middle […]
Come on! move it! push it! … Too late, it’s gelled up! …
Now, please let me tell you more about Cement gelation Why this post? Over a month ago, someone requested some insights about Primary and Secondary cement gelation. Two or three answers were provided, which I think were enough to have a good idea on the topic. However, to be honest, I could not stop thinking […]
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