Greenhouse Gas Management
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, including greenhouse gas (GHG) emissions of carbon dioxide (CO2) and methane (CH4).
Anadarko is committed to responsible environmental stewardship. We implement 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.
As part of our commitment to minimizing our enviornmental impact, Anadarko formed the GHG and Air Quality Committee, which 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.
Since 2005, Anadarko has annually reported GHG emissions data and additional comprehensive information regarding our carbon-management strategies and actions to the Carbon Disclosure Project (CDP). Anadarko has also participated in EPA’s Natural Gas STAR program, The Climate Registry and the American Carbon Registry.
Select GHG Outreach and Emission-Management Efforts
Anadarko supports public policy based on sound science, and we cooperate 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. In 2013, Anadarko supported the State of Colorado’s development of the first-of-its-kind air regulations to reduce methane leaks.
Recognizing that technology is key to reducing GHG emissions and methane is captured and moved into the sales line, Anadarko has participated in several multi-stakeholder studies directed by the University of Texas (UT) and Colorado State University (CSU) in partnership with the Environmental Defense Fund (EDF) and other industry representatives.
University of Texas – Production Sector Methane Study
The initial study, published in the Proceedings of the National Academy of Sciences in 2013, conducted the first documented direct measurements at well completion sites and found that GHG emissions were 97 percent lower than previously estimated by the Environmental Protection Agency (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 subset of sources account for the majority of GHG emissions.
Colorado State University – Gathering and Processing Study
This study, published in Articles in Environmental Science & Technology in 2014, conducted atmospheric methane measurements from gathering and processing facilities. The study results indicate that 101 of the 130 facilities had methane loss rates below 1 percent of the methane flowing through those facilities. A companion paper, published in Articles in Environmental Science & Technology in 2015, modeled and compared measurement results to estimates made by the Environmental Protection Agency, finding a methane loss rate of 0.47 percent for all U.S. gathering and processing operations.
Anadarko continues to work with EDF and other industry partners in the Methane Detectors Challenge, aimed at identifying next-generation technologies that will improve methane emissions monitoring 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 advance. 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.
Best Management Practices (BMP) to Reduce GHG Emissions
- 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
- Installation of plunger lift, submersible pumps, and gas recovery system to reduce vented methane
- Reduced-emission completions at all 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 nearly 450 vehicles (approximatley 20 percent of its fleet) across our U.S. operating areas to natural gas vehicles
- Informal program for the replacement of high-bleed controllers with low-bleed or no-bleed controllers at existing facilities
- Replacement of dated and less-efficient compressors
- Increased usage of pipelines and water-management programs that eliminate truck traffic and their associated emissions
The majority of Anadarko's facilities are subject to voluntary, state or federal fugitive monitoring through AVO or FLIR camera inspection methodologies
- In Colorado, 100 percent of facilities are subject to monthly AVO and monthly to annually FLIR camera monitoring
U.S. Federal GHG Required Reporting
On Oct. 31, 2010, the EPA issued its final Greenhouse Gas Reporting Program (GHGRP) directive requiring specific industry sector reporting and as a result, Anadarko is now 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; and
- Subpart NN: Suppliers of Natural Gas and Natural Gas Liquids.
For each of our Gulf of Mexico and U.S. Onshore operating areas, Anadarko reports annual GHG emissions to the EPA, which are publicly available on the EPA website. EPA has finalized changes to the GHGRP to collect and include reporting of gathering and boosting operations beginning in the reporting year 2016.
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. Beginning in 2017, the new data from the gathering and boosting sector can be used to show results of our continuous improvement from all of our operations.
The U.S. Federal GHGRP program inherently outlines how Scope 1, direct emissions, are measured, estimated and reported for US Onshore assets.
Additionally, Anadarko references EPA's GHG Protocol for Scope 2 and Scope 3 emissions calculated outside of EPA's GHGRP.