Primary cementing objective recap Trapped pressure is always something to be aware of in cementing. A common objective of the primary cementing operation of intermediate casings is to have the top of the cement at the surface. In some cases, due to the presence of losses during or after the cement placement, this objective is […]
IRAQ: Some good News … just about time !
Introduction For those of you with some experience of working in Iraq, you should be pretty much aware of how the oil price affected the country, and consequentially the investment and work of the IOCs operating in South Iraq. Well, finally after months of uncertainty and a kind of blurry business environment, we see some […]
Recommendations to avoid Annular Pack Off while cementing
Introduction: Before we cover the ways that we can mitigate the risk of an annular pack off while cementing, first we can cover the actions that lead to this outcome. Insufficient hole cleaning before cementing means that cuttings and solids remain in the hole by the time we execute the cementing operation. This situation is […]
Cementing Process Quality Assurance
This page gives a helpful breakdown of all the important steps during the well-cementing process. At the moment of the cementing operation, field personnel in supervisory roles are responsible for overseeing the location job preparations and execution. This responsibility primarily lies with the cementing contractor. This contractor is expected to have a system in place […]
Liner Cementing Challenges and Solutions
1. Considerations for Pre-flush/Spacer In liner cementing operations, the bottom wiper plug, which is responsible for mechanically separating the cement slurry from the spacer ahead, is sometimes not available. This availability issue is due to the characteristics of many common liner tool systems in use. This limitation results in increased front-end contamination of the cement slurry […]
Cement Bond Log and Variable Density Results
Using a cement bond log, a variable density log, and ultrasonic tools provides an indispensable (but different) set of evaluative data. The objective of cement bond logs like these is to provide information to understand if we have achieved zonal isolation. If not, they can help to asses if a cement squeeze will be possible […]
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