美国能源署-钻探生产力报告（英文）-2018.04-11页

Drilling Productivity Report Summary

Core Content

This report provides an overview of drilling productivity and production changes in key tight oil and shale gas regions across the United States. It includes data on new-well and legacy production, monthly changes, and rig counts. The data is sourced from the U.S. Energy Information Administration (EIA) and various state regulatory bodies, with Baker Hughes providing rig count data.

Key Regions Analyzed

The report covers the following regions:

• Anadarko Region
• Bakken Region
• Eagle Ford Region
• Haynesville Region
• Niobrara Region
• Permian Region
• Appalachia Region

Main Points

1. Monthly Additions from One Average Rig

• This metric represents EIA's estimate of an average rig's contribution to new-well production.
• It is calculated by dividing total production from new wells by the monthly rig count, lagged by two months.
• The current and next-month values are listed at the top header, with the month-over-month change noted alongside, using color-coded arrows to indicate growth or decline.

2. New-Well Production per Rig

• Charts show historical estimated monthly additions from one average rig for both oil and gas.
• Data is sourced from Baker Hughes, which reports the number of drilling rigs.
• These charts provide insight into the productivity of new wells in each region.

3. Legacy Production Change

• This section includes EIA's estimates of changes in production from existing (non-new) wells.
• Legacy production changes are influenced by well depletion rates and other factors like freeze-offs or hurricanes.
• These changes are not limited to new wells and reflect the overall trend of production from all wells in the region.

4. Indicated Monthly Change in Production

• Charts indicate the change in oil and natural gas production from May to April.
• These changes are derived from the combined effects of new-well production and legacy production changes.
• The estimated changes do not account for external factors such as infrastructure constraints, bad weather, or environmental/economic shut-ins.

5. Oil and Natural Gas Production

• Charts present total oil and natural gas production from both new and legacy wells since 2007.
• Production data is based on reports from state oil and gas agencies.
• Where state data is not available immediately, EIA estimates production based on historical trends and changes in new-well and legacy production.

Key Information by Region

Methodology

• Rig Count: The monthly average rig count is calculated from Baker Hughes' weekly data.
• New Wells: A new well is defined as one that began producing in the previous month.
• Legacy Wells: These are existing wells not classified as new, and their production changes are influenced by depletion and other factors.
• Estimation: EIA does not differentiate between oil-directed and gas-directed rigs, as wells may produce both.

Sources of Data

• Drilling Info: Provides production, permit, and spud data for counties associated with the report.
• Baker Hughes: Supplies rig and well count data by county, state, and basin.
• State Regulatory Agencies:
  • North Dakota Oil and Gas Division
  • Railroad Commission of Texas
  • Pennsylvania Department of Environmental Protection
  • West Virginia Department of Environmental Protection
  • Colorado Oil and Gas Conservation Commission
  • Wyoming Oil and Conservation Commission
  • Louisiana Department of Natural Resources
  • Ohio Department of Natural Resources
  • Oklahoma Corporation Commission

Footnotes

1. Oil Production: Includes both crude and condensate from all formations in the region.
2. Gas Production: Refers to gross (before processing) gas production from all formations.
3. Rig Count: Based on weekly data from Baker Hughes.
4. New Wells: Defined as those that began production in the previous month.
5. Data Lag: Rig count data lags production data by two months.

Conclusion

The report highlights the productivity trends and production changes in key U.S. oil and gas regions, offering insights into both new and legacy wells. It serves as a valuable tool for understanding the dynamics of oil and gas production, informed by EIA's analysis and state regulatory data.