tally

Test Your Knowledge

Tallying Up Quiz:

Instructions: Choose the best answer for each question.

1. What does "tally" refer to in the context of drilling and well completion?

a) The number of people working on a drilling rig. b) The total length of pipe, casing, or tubing run in a well. c) The type of drilling fluid used in a well. d) The depth at which a well is drilled.

2. Which of the following is NOT a benefit of accurate tallying?

a) Precise well design. b) Improved safety and efficiency. c) Reduced production costs. d) Determining the type of drilling fluid used.

3. What is a common tool used for tallying?

a) A geological map. b) A drilling rig. c) A tally book or digital tally system. d) A pressure gauge.

4. What information is typically NOT recorded in a tally book or system?

a) Pipe type. b) Pipe size. c) Pipe length. d) The names of the workers on the rig.

5. Why are digital tally systems becoming more popular in the oil and gas industry?

a) They are less expensive than traditional tally books. b) They require less training to use. c) They offer greater accuracy and efficiency. d) They are only used in offshore drilling operations.

Tallying Up Exercise:

Scenario: You are a drilling engineer responsible for tallying pipe for a new well. You are using a traditional tally book. The following pipe segments are being run:

• Pipe Type: Casing
• Pipe Size: 10-inch diameter, 30-pound weight
• Pipe Lengths: 40 feet, 38 feet, 42 feet, 40 feet, 39 feet

Task:

1. Complete the following tally book entry for the first pipe segment:

| Pipe Type | Pipe Size | Pipe Length | Joint Number | Run Depth | |---|---|---|---|---| | Casing | 10-inch, 30-pound | | | |

2. Calculate the total length of casing run so far.

Techniques

Chapter 1: Techniques

Tallying Techniques: A Guide to Accurate Measurement and Recording

Tallying, as discussed in the introduction, is the meticulous process of measuring and recording the length of pipes used in drilling and well completion. This chapter delves into the diverse techniques used to ensure accurate tallying, highlighting their strengths and limitations.

1.1 Manual Tallying:

This traditional method relies on a tally book, a physical document where data is manually recorded. It involves:

• Visual Inspection: The length of each pipe segment is physically measured using a tape measure or ruler.
• Manual Entry: The measured length is then recorded in the tally book, alongside other crucial information like pipe type, size, and joint number.

Pros:

• Simplicity and Cost-effectiveness: Requires minimal equipment and can be performed by skilled personnel.
• Flexibility: Suitable for various scenarios, including remote locations with limited access to technology.

Cons:

• Human Error: Manual recording is prone to errors, potentially leading to inaccuracies.
• Time Consuming: The process is labor-intensive and can slow down operations.
• Difficult to Track: Tracking and analyzing data from tally books can be cumbersome.

1.2 Digital Tally Systems:

Modern tally systems utilize digital tools for automatic data recording. These systems leverage:

• Barcode Readers: Barcodes are attached to each pipe segment, allowing for quick and accurate identification and measurement.
• RFID Tags: Radio Frequency Identification tags provide a wireless method for identifying and recording pipe information.
• Software Applications: Digital data is captured and stored in specialized software for analysis and reporting.

Pros:

• Accuracy and Efficiency: Automated systems significantly reduce the risk of human error and streamline the process.
• Data Management: Digital records are easily accessible, searchable, and can be used for comprehensive analysis.
• Integration: Digital systems can seamlessly integrate with other drilling and well completion software for improved workflow.

Cons:

• Initial Investment: Implementing digital systems requires a significant upfront investment in hardware and software.
• Technical Expertise: Operators need to be trained to use and maintain the digital system.
• Connectivity Requirements: Digital systems require reliable internet connectivity for data transmission.

1.3 Hybrid Approach:

Combining manual and digital techniques can provide a balanced approach for tallying. For instance, a tally book can be used to record initial information while a digital system can be used for final verification and data storage.

1.4 Conclusion:

The choice of tallying technique depends on factors like budget, available resources, project requirements, and desired level of accuracy. Regardless of the method used, thorough training and adherence to best practices are crucial for ensuring precise and reliable tallying.