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GHG Management

Anadarko's Commitment

Anadarko supports scientific research that improves the understanding of climate patterns and their potential sensitivity to human activities. Simultaneously, we recognize the need to reduce all emissions, particularly greenhouse gas (GHG) emissions of CO2 and methane (CH4).

Anadarko is committed to responsible environmental stewardship. We frequently go above and beyond regulatory compliance by implementing industry-leading practices and technology, while continually looking for innovative ways to minimize the overall environmental impacts of our activities, including the reduction of GHG emissions.

In 2004, Anadarko formed a Committee that reports to the Board of Director’s Governance and Risk Committee to organize, evaluate and take action on climate change, air quality and GHG issues.

Entergy recently presented Anadarko Petroleum Corporation with recognition as part of the Entergy Texas Commercial Solutions Program for energy-efficient lighting and cooling system upgrades. These upgrades, installed in Hackett Tower in The Woodlands, TX in 2013, will save over 1.3 million kWh per year, or over 900 metric tons of carbon dioxide (CO2). The CO2 saved is equivalent to removing nearly 200 passengers from the road or planting nearly 750 acres of forests.  

Select GHG Outreach and Emission-Management Efforts:

Anadarko supports public policy that is based on sound science and works with agencies to assist in the development of appropriate and effective regulations, recognizing that energy is essential to modern life and critical to the success of industrial and developing economies. Among these efforts, in 2013, Anadarko supported the State of Colorado’s development of the first-of-its-kind air regulations to reduce methane leaks.

Recognizing technology is key to reducing methane emissions and ensuring every molecule is captured and moved into the sales line, Anadarko has participated in two multi-stakeholder studies on methane emissions from natural gas production sites in partnership with the Environmental Defense Fund (EDF) and other industry representatives directed by the University of Texas (UT). The initial study, published in the Proceedings of the National Academy of Sciences in 2013, conducted the first documented direct measurements at well completions and found that methane emissions were 97 percent lower than previously estimated by the EPA during this phase of development. The second study, published in Articles in Environmental Science & Technology in 2014, conducted additional direct-source measurements of liquids unloading events and pneumatic controllers, finding that a small sub-set of sources account for the majority of methane emissions. The published results of these studies provide estimated methane leakage rates across the natural gas production emissions life-cycle. Anadarko’s percent methane leakage rate from drilling, completion and production is represented in these rates compiled with those of the other participating companies.

Anadarko continues to work with EDF and other industry partners in the Methane Detectors Challenge aimed at identifying next-generation technologies that will help better monitor methane emissions from oil and natural gas operations. This collaboration attracted 20 proposals from companies and university research teams, from which five innovations have been selected to move forward. We look forward to testing these promising technologies in the field and using these innovations and others to improve our operational performance and further control and reduce our emissions.

Anadarko incorporates Best Management Practices (BMP) into our operations that reduce GHG emissions, including:

  • Broad usage of Forward-Looking Infrared (FLIR) technology for leak detection surveying and inefficient pipe replacement (on a monthly to annual basis and for commissioning of facilities and equipment);
  • Plunger lift, submersible pumps, and gas recovery system installation to reduce vented CH4;
  • Reduced emission completions at most natural gas and oil wells;
  • Solar-powered pumps to replace gas-fired pneumatic pumps; 
  • Use of natural gas and low-emission diesel to power well pad operations;
  • Use of “Bi-Fuel” or “dual fuel” fracs that replace up to 70 percent of the diesel fuel used to power completion equipment with liquefied natural gas (LNG); 
  • Converting close to 450 vehicles (18 percent of its fleet) across U.S. plays to natural gas vehicles; 
  • Replacement of high-bleed controllers with low-bleed or no-bleed controllers at existing facilities;
  • Replacement of older and less-efficient compressors; and
  • Increased usage of pipelines and water-management programs that eliminate truck traffic and their associated emissions.

U.S. Federal GHG Required Reporting

On Oct. 31, 2010, the EPA issued the Final GHGRP requiring GHG emission inventory reports from specific industry sectors, and as a result, Anadarko is required to report to the GHGRP under the following subparts:

  • Subpart A: General Provisions; 
  • Subpart C: General Stationary Fuel Combustion Sources;
  • Subpart W: Petroleum and Natural Gas Systems; 
  • Subpart NN: Suppliers of Natural Gas and Natural Gas Liquids; 
  • Subpart PP: Suppliers of Carbon Dioxide; and
  • Subpart UU: Injection of Carbon Dioxide.

For each of our operating areas, Anadarko reports annual GHG emissions to the EPA, which are publicly available on the EPA website. Using the data from these reports and the calculation methods specified by the GHGRP, we conduct GHG emission comparisons from year to year for applicable facilities and basins. Because of the evolution of reporting requirements by EPA, emissions from 2010-2013 were calculated using a combination of estimated and limited actual data. Over the same time period, Anadarko's production output has increased dramatically. With the new protocols in place, 2014-onward comparisons from year to year should be more straightforward and more accurately show our continuing improvements.

Anadarko also has annually reported GHG emissions data and additional comprehensive information regarding our carbon-management strategies and actions to the Carbon Disclosure Project (CDP) since 2005. Further information is available on the Carbon Disclosure Project website. Anadarko has also participated in EPA’s Natural Gas STAR program, The Climate Registry, and the American Carbon Registry.


  • Anadarko Commended for Climate Change Disclosures
In September 2009, Anadarko was recognized by the Carbon Disclosure Project (CDP) for the company’s transparent approach to climate change disclosures. This marks the first year that Anadarko has been featured in CDP’s “Carbon Disclosure Leadership Index.”