Understanding Directional Step Formation Records: Key Data Points Explained
Introduction to Directional Step Formation Records
Directional step formation records provide crucial information about geological formations encountered during well drilling. Let's explore the key data points in these records and their significance in the oil and gas industry.
Formation Identification
- Formation Name: The designation of the geological formation.
- Reported Formation Name: The name of the formation as reported, which may differ from the formation name.
Depth Measurements
- Top Depth: The distance from the surface to the uppermost part of the formation.
- Base Depth: The distance from the surface to the lowermost part of the formation.
- Top TVD (True Vertical Depth): True vertical depth of the formation top.
- Base TVD: The true vertical depth measured to the lowest point of the formation.
Formation Characteristics
- Thickness: The number of feet from top to bottom of this formation at this directional step.
- TVD Thickness: The thickness based on TVD (note: this measurement is deprecated).
- Perforated Feet in Formation: Number of feet perforated in this formation for this step of the directional survey.
Production Information
- Is Producing: A flay indicator to show whether this well is currently producing.
Records Management
- Date Created: When the record was initially added to the WellDatabase system.
- Last Modified Date: The most recent update to the record in WellDatabase.
- Date Catalogued: When the record was incorporated into the export database.
Identification and References
- Completion ID: The state-assigned identifier for the well completion.
- Directional Record ID: A reference linking this data to its corresponding directional record.
- Simple ID: A straightforward integer identifier for quick database queries.
- Internal ID: A unique integer identifier for efficient internal database operations.
Data Model
The schema in our data model provides a complete and detailed framework for capturing and analyzing the data available in WellDatabase, click here to access.
Conclusion
Understanding these data points is essential for geologists, engineers, and analysts working in the oil and gas industry. They provide a comprehensive view of the subsurface formations encountered during drilling operations, crucial for well planning, production optimization, and reservoir characterization.
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