What is the first step in conducting a Leak-Off Test (LOT) after casing?

What is the first step in conducting a Leak-Off Test (LOT) after casing?

• A. Drill out the casing shoe into the new formation
• B. Record the initial pressure
• C. Begin circulating fluid
• D. Install a new pressure gauge

Answer: (A)

In conducting a Leak-Off Test (LOT) after casing, drilling out the casing shoe into the new formation is indeed the first step. This action allows access to the formation that will be tested for pressure integrity and permeability. By drilling out, the wellbore can communicate with the formation to establish a baseline for the test. This step is essential because it prepares the well for the subsequent pressures that will be measured. After drilling out, you can then proceed to record the initial pressure and initiate the other components of the testing procedure. The drilling out process ensures that you're in the correct formation, which is critical for the accuracy of the test results.

In conducting a Leak-Off Test (LOT) after casing, drilling out the casing shoe into the new formation is indeed the first step. This action allows access to the formation that will be tested for pressure integrity and permeability. By drilling out, the wellbore can communicate with the formation to establish a baseline for the test.

This step is essential because it prepares the well for the subsequent pressures that will be measured. After drilling out, you can then proceed to record the initial pressure and initiate the other components of the testing procedure. The drilling out process ensures that you're in the correct formation, which is critical for the accuracy of the test results.