Caliper Logging Services For Oil, Mining
And Geothermal Survey
Caliper logging is a type of downhole survey that is used to measure the diameter of a wellbore. The tool used for Caliper logging is called a Caliper, which is a device that is lowered into the wellbore on a wireline or conveyed on a drilling assembly. The Caliper has arms that can be opened or closed to fit the diameter of the wellbore. The measurement is taken by comparing the distance between the closed arms to the diameter of the wellbore.
What Does Caliper Logging Measure?
Caliper logging measures the diameter of the wellbore. Caliper logging can measure the diameter of the wellbore in several different ways, such as:
- Contact method: the arms of the Caliper tool make physical contact with the wellbore and measure the diameter by the distance between the arms.
- Non-contact method: the tool uses sensors such as ultrasonic or optical to measure the diameter of the wellbore without making physical contact.
What Is Caliper Logging Used For?
Some of the main uses include.
Caliper logging is used to determine the size and shape of the wellbore, which is important for wellbore navigation, drilling optimization and maintaining wellbore stability.
Detecting Wellbore Abnormalities:
Caliper logging can detect various wellbore abnormalities such as ledges, washouts, keyseats, and other features that could compromise good integrity.
Well Integrity Check:
The Caliper log data is also used to evaluate the condition of the well and detect any signs of damage or deformation, which can cause well integrity issues.
Caliper logging can be used to identify the presence and orientation of hydrocarbon-bearing formations, which can help in the exploration and production of oil and gas.
Caliper logging can be used to optimize drilling parameters such as weight on bit, rotary speed, mudflow, and mud properties, to improve the drilling efficiency and reduce the risk of wellbore instability.
Caliper logging is used to design the completion string and select the appropriate size of the casing and tubing, in order to ensure a proper fit and avoid wellbore collapse or other issues.
Exploration And Mining Drilling:
Caliper logging can also be used to identify the presence of different formation types and aid in the exploration of mineral deposits in mining drilling.