The primary objectives for centralization design (that is the number, type and spacing of centralizers) should satisfy both the need to get the casing to bottom as well as zonal isolation. However, despite this being apparently simple and obvious, cementers do not seem to appreciate the fact that without the casing at target depth primary […]
Support Better Cementing for All – Empowering Oil Well Cementers
In 2016, I launched Better Cementing for All. Now, I want to keep it alive. For more than 24 years, I have worked in oil well cementing, offering my services to some of the largest oil corporations in the world and committing myself to excellence. I have mastered my role, and in doing so, I […]
Have you ever been suddenly covered in some fluid on location? Share your photos
Working in heavy rain with the boots filled with water, mud-sprayed on the rig floor and yes, covered in cement slurry from head to toe … All happened to me. What about you? these events are common but rarely documented in pictures. Few hours before … Share your picture for posterity !! Hopping for a […]
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 […]
As a cementer, you are required to isolate a possible influx zone at 1600m, What can you do?
Influx zone characteristics These wells may show high dogleg severity in the intermediate section. Depending on the type of formation drilled across, there could be a tendency to form sort of keyseats, not only low side but also high side. They tend to get worse with additional drill string work, such as trips, reaming or circulation. […]
Good or bad cement job? 7 Criteria
Well, this is the question: Was it a good or bad cement job? The final answer will depend on the objectives of the job. We ask ourselves, were they met? In most cases, additional information is required, like a cement evaluation log, a pressure test or even further data during the well’s completion. However, some immediate […]
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