Podcast
Questions and Answers
Why is mud pressure kept higher than the reservoir pressure during drilling?
Why is mud pressure kept higher than the reservoir pressure during drilling?
- To increase the permeability of the formation
- To prevent formation damage caused by fluid influx (correct)
- To reduce the cost of drilling operations
- To accelerate the process of mud invasion
How does mud invasion impact the measurements obtained by logging tools?
How does mud invasion impact the measurements obtained by logging tools?
- It distorts the readings due to the presence of mud cake at the sand face (correct)
- It has no effect on the measurements obtained
- It enhances the accuracy of the measurements by stabilizing the formation fluids
- It reduces the volume of filtrate in the formation
What factor must be considered to obtain true formation values from well logging measurements after mud invasion?
What factor must be considered to obtain true formation values from well logging measurements after mud invasion?
- Mud type (water-based or oil-based) (correct)
- Formation water content
- Hole shape
- Caving/washout in the wellbore
How does caving/washout in the wellbore influence the logging process after mud invasion?
How does caving/washout in the wellbore influence the logging process after mud invasion?
Why is it important for logging tools to be able to measure undistributed formation after mud invasion?
Why is it important for logging tools to be able to measure undistributed formation after mud invasion?
What does the tool depth of investigation depend on?
What does the tool depth of investigation depend on?
Which factor is NOT the only one affecting the depth of investigation of logging tools?
Which factor is NOT the only one affecting the depth of investigation of logging tools?
What is the primary function of the tool vertical resolution in logging tools?
What is the primary function of the tool vertical resolution in logging tools?
Why is having a lower depth of investigation considered beneficial for identifying all layers in the formation?
Why is having a lower depth of investigation considered beneficial for identifying all layers in the formation?
How should source-receiver spacing be designed to ensure that all layers are identified by logging tools?
How should source-receiver spacing be designed to ensure that all layers are identified by logging tools?
