WOC abbr

Test Your Knowledge

WOC Quiz:

Instructions: Choose the best answer for each question.

1. What does the abbreviation "WOC" stand for in drilling and well completion reports?

a) Waiting On Completion b) Waiting On Cable c) Waiting On Cement d) Waiting On Connections

2. Why is the WOC period crucial in well completion?

a) To allow for the cement to harden and provide structural integrity. b) To give the drilling crew a break. c) To check for any equipment malfunctions. d) To measure the depth of the well.

3. Which of the following is NOT a common use of cement during the WOC period?

a) Setting casing strings in place. b) Isolating different zones of the well. c) Connecting drilling pipes. d) Sealing off unwanted or depleted zones.

4. What information is typically documented in a drilling report regarding the WOC period?

a) The type of cement used. b) The start time of the cementing operation. c) The expected and actual wait time. d) All of the above.

5. What is the primary reason for ensuring the WOC period is carefully monitored and managed?

a) To avoid delays in the drilling operation. b) To ensure the well is completed safely and efficiently. c) To comply with regulatory requirements. d) To minimize the cost of the well completion.

WOC Exercise:

Scenario:

You are reviewing a drilling report that states a WOC period occurred from 10:00 AM to 4:00 PM on February 15th, 2023. The report indicates that the cement used was Class H high-performance cement, designed for a minimum setting time of 4 hours. The cementing operation was performed at a well depth of 5,000 feet.

Task:

1. Calculate the actual WOC period in hours.
2. Based on the information provided, was the WOC period sufficient to allow for proper cement hardening?
3. What additional information would you need to determine if the WOC period was adequate?

Techniques