IWCF / IADC Knowledge Refresh

IWCF / IADC Knowledge Refresh Well Control Page for amators of WC, provides various well control courses, exercices and support to the oil and gas personel.

09/18/2025

A change in procédure and process could lead to serious safety or operational incidents if thé changes are not properly documented and implémented correctly
Management of change (MOC) is a process of handling these types of changes in a controlled manner where modifications are recognized, documented reviewed and approved before they are implémented.

09/07/2025

Mud Contamination:
A mud is said contaminated when a foreign material enters the mud system and causes undesirable changes in mud properties, such as density, viscosity, and filtration.
Generally water based mud systems are the most susceptible to contamination
Mud Contamination can result from overtreatment of the mud system with additives or from material entering the mud during drilling.

So, What are the most common contaminants to water based mud system، sources and treatments?

09/04/2025

What is the most common cause of Abnormal formation pressure?

09/04/2025

Why is the top of a gas réservoir usually abnormally pressured?

09/04/2025

Considering Abnormal formation pressure, what is the cause of the Artesian Effect?

09/04/2025

What does each of Porosity and Permeability means:
1- The ability of a formation to allow fluid to flow through it
2- The void spaces between thé grains of rock

09/04/2025

If mud density is increased and the heavier mud is circulated around thé well, when will the bottom hole pressure start to increase?

1- When the Annulus is completely displaced to heavy mud.
2- When the drillstring is completely displaced to heavy mud.
3- When the heavy mud starts to be pumped into the drillstring.
4- When the heavy mud starts to be pumped into the annulus
5- Just before the heavy mud reaches the bit.

01/16/2024

The slow circulation Rate for each pump will be taken:
a- If Practical, at the beginning of every tour.
b- Any time the mud properties are changed.
c- When a bit nozzle is changed.
d- As soon as possible after bottoms-up from any trip
e- At least every 1000 feet of new hole.
f-all the above.

01/16/2024

Well Control Operations are conducted at reduced circulating rates in order to:
a- Minimise Excess of annulus pressure
b- Allow for more controlled choke adjustments
c- Allow for the weighting up and degassing of the mud and disposal of the influx
d- Reduce the chance of choke erosion
e- Reduce risk of over pressuring system if plugging occurs
f - a&c
g- all the above

01/15/2024

* what is meant by Total Pump pressure losses ?

* How to calculate APL?

* How to evaluate ECD?

01/15/2024

calculate the required Mud weight to Drill to a Target reservoir, Depth: 12000 ft, Pore pressure 6000psi, consider 200psi Trip Margin.
a- 9.3 ppg
b- 10 ppg
c-11 ppg

01/15/2024

what's the difference between Kick Positive signs & Kick Warning signs?

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