Targets, technology and transparency
We invest in the latest equipment and deploy well-trained employees and contractors to carry out our emissions reduction programs. Our air quality program supports efficient, effective work by defining responsibilities and requirements for communications, compliance, recordkeeping and training.
Our vice president of ESG and EHS serves on both the ESG Steering Committee and the cross-functional EHS Council, providing continuity and alignment while elevating our companywide focus on ESG performance, including air emissions. To implement Devon’s emissions reduction strategy effectively, the EHS Council sets the strategy in close coordination with the vice president for ESG and EHS, the ESG Steering Committee and senior leaders. In early 2022, we established our ESG team, led by the new role of ESG manager, to provide advisory support across Devon to help achieve our ESG and sustainability-related objectives and goals.
Devon facilities and equipment may at times emit VOCs, NOx and other gases that are subject to state and federal emissions authorization permits and limits. We pursue full compliance by clearly communicating requirements to our operating facilities. Some facilities are subject to annual emissions inventories, which we submit to the appropriate regulatory agencies. The information is publicly available in states where these inventories are required. If compliance issues arise, we work expeditiously and constructively with regulators to address them. We’ll continue to proactively look beyond compliance to further reduce our air emissions.
Greenhouse gas emissions methodology
Devon reports GHG emissions from fuel combustion, flaring, fugitive emissions, venting and storage tank losses (Scope 1) and electricity consumption (location-based Scope 2) for assets under our operational control. We collect data on GHGs (carbon dioxide (CO2), methane and nitrous oxide) and submit annual GHG emissions according to the requirements of the U.S. Environmental Protection Agency (EPA) Greenhouse Gas Reporting Program.
We also report indirect emissions from the use of sold products (Scope 3) on an equity basis from sources not owned or controlled by Devon. Scope 3 GHG emissions include indirect emissions from the consumption and use of Devon’s crude oil and natural gas production.
估计范围3排放,德文郡的依赖IPIECA’s 2016 guidance document, Estimating Petroleum Industry Value Chain (Scope 3) Greenhouse Gas Emissions. According to this guidance, category 11, “Use of Sold Products,” is generally the largest contributor of Scope 3 emissions for a fuel-producing company and can account for more than 80% of a company’s total Scope 3 emissions. We report “Use of Sold Products” by calculating combustion emissions for our oil, natural gas and marketed natural gas liquids products.
Our baseline recalculation methodology
This baseline serves as a hypothetical reference point for what the emissions intensity would have been in the absence of emissions reduction efforts over time. To comparably track progress toward the targets, adjustments to the emissions baseline may be necessary to reflect structural, organizational or reporting changes that may occur over time. For example, an acquisition or divestiture could significantly impact our emissions performance and impair comparability from the emissions baseline.
We relied upon guidance from the Greenhouse Gas Protocol and IPIECA in establishing our baseline recalculation methodology. Our baseline will be adjusted if impacted by one or more trigger events that result in a change to the emissions baseline of 5% or higher on an absolute or intensity basis. Trigger events include structural changes; source ownership or control changes; changes to reporting boundaries, quantification methodologies or data improvements; or discovery of errors.
Note: Consideration of trigger events that occurred in 2022 and any resulting adjustments to Devon’s 2019 baseline will be included in our 2023 Sustainability Report.
Addressing our primary emissions sources
我们的缺点tinuous improvement culture led Devon to develop a detailed understanding of where our emissions come from. This made it possible to address our air emissions at the primary sources through a variety of effective mitigation strategies:
- Reducing flaring across our entire portfolio of producing assets
- Transitioning to air-driven pneumatic controllers
- Cutting combustion from drilling, completions and production by increasing the use of engines powered by electricity and alternative fuels
We evaluate emissions detection and quantification technologies on an ongoing basis and collaborate with industry, environmental groups and agency partners on emissions reduction strategies. In 2022, we continued our focused effort and record of progress in lowering GHG emissions.
Flaring: Continuing reductions
Flaring of natural gas – a controlled ignition process for eliminating methane and VOC emissions – is necessary for safe operations in various phases of the oil and natural gas production process. Devon strives to avoid entirely the venting of raw gas and to limit flaring to the extent possible at all locations. Reducing flaring is a priority in our broader emissions reduction strategy because we want to protect the environment and capture as much natural gas as possible for its economic value, while also complying with laws, regulations and permits.
We continually evaluate and optimize our facilities, including installing reliable pressure-relief valves to minimize tank releases and vapor recovery equipment to capture flash gas emissions and route them to a pipeline. Devon also uses “green completions” to capture produced natural as following hydraulic fracturing. Where flaring is unavoidable, we install pilot monitoring equipment to help ensure the gas is properly combusted.
By prioritizing flaring reductions and employing best practices, we have meaningfully improved our flaring performance across the company.
例如,2019年,棉花accoun画领域ted for most of Devon’s flared gas volumes in our Delaware Basin operations of New Mexico. Upon investigation, we identified insufficient takeaway capacity or midstream constraints as the primary driver of flaring in the basin. To drive down these upset conditions, Devon took ownership of the associated midstream gas compression equipment. We made operational refinements, upgraded compressors, adjusted the flow rates of some wells and shut-in others. We also made a multi-year commitment to our Cotton Draw Midstream partnership, agreeing to contribute our existing gas gathering and compression infrastructure in an area of mutual interest. We dedicated about 24,000 acres for gathering and compression on the partnership’s system, while our partner, QL Capital Partners (QLCP), agreed to fund a $100 million distribution to Devon to build out the Cotton Draw Midstream assets over the next several years. As a result, flared volumes in the Delaware Basin of New Mexico declined from about 4% in mid-2019 to 0.5% in 2020 to 0.2% in 2021.
在看到2019年底和2020年的性能显着提高之后，我们继续在2021年在每个操作区域中有意义地减少我们的喇叭额取得了进步。我们建立了一种两国的方法来继续改善公司的耀斑 - 针对燃烧的方法强度为2025年产生的0.5％的天然气总天然气，并消除了世界银行定义的常规爆炸。我们计划通过继续采用最佳实践来实现有效的方法，从而推动整个运营区域的进一步改进喇叭形体积和最小化排放量。它们包括实施耀斑管理计划；与中游合作伙伴进行连续捕获天然气捕获计划和合作；增强分离和压缩可靠性；扼流管理；猪线；并优化燃烧。结果，我们全公司范围的强度从2019年的2.2％提高到2020年的1.5％，增长到2021年的0.9％ - 自2019年以来提高了57％。
We’re also sharing our best practices with trade association partners because we believe it’s crucial that we work together to reduce flaring and air emissions across the industry. Devon is a founding member and current steering committee member of The Environmental Partnership, a voluntary coalition of oil and natural gas companies operating across the U.S. seeking to reduce air emissions. In 2020, the partnership announced the launch of its latest initiative, the Flare Management Program, the development of which was chaired by Devon. As part of the program, companies will share best practices to reduce flaring, encourage beneficial use of associated gas, and improve flare reliability and efficiency when flaring does occur.
Devon will continue to look at a broad spectrum of opportunities to reduce flaring and related emissions to not only meet our own targets, but continue improving performance across the industry.
Equipment leaks: Effectively reducing methane emissions over time
Methane emission detection technologies are evolving rapidly and are a central component of Devon’s broader emissions reduction strategy.
Using optical gas imaging (OGI) cameras to detect leaks has been one of Devon’s primary emissions mitigation tactics since 2014. Our leak detection and repair (LDAR) program has been effective at finding equipment leaks from piping components and associated equipment and was a major contributor to achieving our first methane intensity target well ahead of schedule.
船环境运营商每个操作区域us primarily on conducting LDAR surveys at our sites and then making sure repairs are successful. We analyze the repair data to help us focus on reducing the number and frequency of leaks. If we pinpoint certain components or equipment that have repeat leaks, we consider replacing them on a field-wide basis. This approach led us to install thief hatches that have a lower leak rate and focus on specific equipment failures and settings. It also enabled us to improve flare maintenance and verify performance of vapor recovery units (VRU).
To help meet the regulatory requirements for LDAR inspections, our environmental and operations teams developed a mobile app to capture, enter, track and document LDAR survey findings. The app automatically syncs any needed repairs, all of which are required for compliance. This has resulted in a more efficient, consistent and systematic LDAR program.
To further reduce emissions from equipment leaks, we’re expanding and enhancing our LDAR program. We continue to steadily expand our existing program and aim to achieve the following In 2022:
- Survey 100% of production facilities with OGI cameras at least once annually
- Install continuous emissions monitoring on 20% of production
Devon has a cross-functional team that evaluates advanced methane detection technologies that have the potential to be effective at not only finding leaks more timely and over broader areas, but also assessing the magnitude of the leaks, allowing for faster detection, mitigation and quantification. We are investigating opportunities for advanced OGI, continuous on-site monitoring, and remote detection using facility flyovers and satellites. We are testing multiple continuous, near-continuous and non-continuous technologies at our emissions monitoring test facility in the Anadarko Basin to inform which innovative technologies are viable candidates for deployment, some of which are being incorporated more broadly across Devon’s operating areas.
We will continue to monitor the rapid evolution of the technology solutions on the market and identify the most promising technologies to test and deploy across our operating areas. Ultimately, we’ll select the technologies with the best results that can help Devon reach our ambitious emissions reduction objectives and targets.
Pneumatic devices: Eliminating natural gas-driven devices
Eliminating gas-driven pneumatic devices is part of Devon’s strategy to reduce our air emissions. We replaced high-bleed natural gas pneumatic controllers on hundreds of well sites in Wyoming, Oklahoma, New Mexico and Texas, and we no longer use them on new wells. In the Delaware Basin, legacy Devon has installed air-driven pneumatic pumps and controllers at nearly all new facilities since early 2019.
Electrification will be a key part of our strategy to meet our net zero GHG emissions for Scopes 1 and 2 by 2050. We seek to plan effectively so we can get grid power to our locations before drilling rigs arrive. Devon is also looking to identify other types of equipment and practices we can power with electricity in the future to avoid using diesel fuel.
In the Delaware Basin, we’re piloting an effort to supplement highly dynamic power demand by bringing emissions-reducing renewable energy and battery storage into our power supply. This effort involves integrating a behind-themeter 5-megawatt solar array into our operations near the Texas-New Mexico state line area. The array will produce power that displaces electricity that would have been purchased from the grid and delivered across state lines. Ultimately, we expect the data generated to help ensure the renewable energy is used efficiently, lowers costs and provides Devon a competitive advantage for future growth.
Storage tanks: Lowering venting and flaring
To reduce venting and flaring from oil and condensate storage tanks, we install vapor recovery towers (VRT) to maximize gas recovery and minimize the volume of tank vapors that need to be flared.