Earth and Environmental Sciences Area Logo Earth and Environmental Sciences Area Logo
Lawrence Berkeley National Laboratory Logo
Menu
  • About Us
    • Contact Us
    • Organizational Charts
    • Virtual Tours
    • EESA Strategic Vision
  • Our People
    • A-Z People
    • Alumni Network
    • Area Offices
    • Committees
    • Directors
    • IDEA Working Group
    • Paul A. Witherspoon
    • Postdocs & Early Careers
    • Search by Expertise
  • Careers & Opportunities
    • Careers
    • Intern Pilot w/CSUEB
    • Mentorship Program
    • Recognition & Funding Opps
    • EESA Mini Grants
    • S&E Metrics for Performance and Promotion
    • Student Opportunities
    • Supervisor EnRichment (SupER) Program
    • Promotion Metrics (Scientific)
  • Research
    • Area-Wide Program Domain
      • Earth AI & Data
    • Our Divisions
    • Climate & Ecosystem Sciences Division
      • Environmental & Biological Systems Science
        • Programs
        • Environmental Remediation & Water Resources
        • Ecosystems Biology Program
        • Bioenergy
      • Biosphere-Atmosphere Interactions
        • Programs
        • Climate Modeling
        • Atmospheric System Research
        • Terrestrial Ecosystem Science
      • Climate & Atmosphere Processes
        • Programs
        • Climate Modeling
        • Atmospheric System Research
      • Earth Systems & Society
        • Programs
        • Climate Modeling
    • Energy Geosciences Division
      • Discovery Geosciences
        • Programs
        • Basic Energy Sciences (BES) Geophysics
        • Basic Energy Sciences (BES) Geochemistry
        • Basic Energy Sciences (BES) Isotope
      • Energy Resources and Carbon Management
        • Programs
        • Carbon Removal & Mineralization Program
        • Carbon Storage Program
        • Geothermal Systems
        • Hydrocarbon Science
        • Nuclear Energy & Waste
      • Resilient Energy, Water & Infrastructure
        • Programs
        • Water-Energy
        • Critical Infrastructure
        • Environmental Resilience
        • Grid-Scale Subsurface Energy Storage
        • National Alliance for Water Innovation (NAWI)
    • Projects
    • Research at a Glance
    • Publication Lists
    • Centers and Resources
    • Technologies & National User Programs
  • Departments
    • Climate Sciences
    • Ecology
    • Geochemistry
    • Geophysics
    • Hydrogeology
    • Operations
  • News & Events
    • News
    • Events
    • Earth & Environment Newsletter
  • Intranet
  • Safety
    • EESA Safety
  • FoW
  • Search

  • all
  • people
  • events
  • posts
  • pages
  • projects
  • publications

The Puzzle to Plugging the Worst Natural Gas Release in History4 min read

by Julie Chao on October 31, 2017

Energy Geosciences Division Energy Resources Program Domain Geologic Carbon Sequestration Program Geothermal Systems

By the time Lawrence Berkeley National Laboratory (Berkeley Lab) scientists Barry Freifeld and Curt Oldenburg visited the Aliso Canyon natural gas storage facility in December 2015, the SS-25 well blowout had been leaking natural gas into the air for more than six weeks. The notoriously strong winds at Aliso Canyon carried the natural gas and its added odorant to the nearby Porter Ranch neighborhood, leading to thousands of families evacuating their homes.

Along with scientists and engineers from Lawrence Livermore National Laboratory and Sandia National Laboratories, the Berkeley Lab crew made up the so-called “Lab Team,” called in by state officials for their expertise in well integrity and well-flow modeling.

 

Lehua Pan, Preston Jordan, Barry Freifeld, and Curt Oldenburg were part of the national lab team that helped plug the Aliso Canyon natural gas blowout in southern California 2 years ago. Photographed at Lawrence Berkeley National Laboratory on Monday, October 9, 2017 in Berkeley, Calif. by Marilyn Chung/Berkeley Lab.

They got to work trying to figure out why eight top-kill attempts – in which heavy fluids and other materials are pumped into the well in an attempt to plug it from above – had failed. Using T2Well, a software tool developed at Berkeley Lab, Lehua Pan, a Berkeley Lab scientist with expertise in soil physics and numerical modeling, was able to simulate the behavior of the leaking well and evaluate why the top kills weren’t working.

Berkeley Lab’s modeling showed that the well’s complex geometry was contributing to the failed top-kill attempts. The simulations also showed that a relief well would be effective. Indeed, the blowout stopped within 10 minutes of the relief well intersecting the leaking SS-25 well, just as the simulations suggested.

To make an impact during these kinds of events, a team effort was required. “We quickly put together an interdisciplinary team that included well drilling and completion experts, reservoir engineers, and geoscientists,” Freifeld said. “By assembling an interdisciplinary team we’re able to look at the entire problem.”

Wells nearly 100 years old

Berkeley Lab scientists are not new to disaster response. In 2010 many of the same scientists dropped everything to assess the Deepwater Horizon’s Macondo well blowout in the Gulf of Mexico. Also using T2Well to model that well, they estimated how much oil and gas were actually flowing out to the sea floor.

T2Well is an extension of the TOUGH (Transport of Unsaturated Groundwater and Heat) codes, a suite of software tools developed at Berkeley Lab that uses numerical models to simulate the flow of liquid, gas, and heat in porous materials and wells. With Berkeley Lab’s expertise in geosciences and computer modeling, it has been continuously improved over the years.

Aliso Canyon’s SS-25 well was completed in 1954 as an oil well. In 1973 it was converted to a gas storage well. Its age is not unusual, considering that all of California’s underground natural gas storage facilities are located in depleted oil or gas reservoirs. Some underground gas storage wells in the state are almost 90 years old. And there are many thousands of aging underground gas storage wells throughout the United States, but there had been no federal safety regulations governing their operation and maintenance.

Now, two years after the leak was first detected, Berkeley Lab is involved in multiple state efforts to ensure such a disaster doesn’t happen again, to mitigate risk if it does, and to assess the long-term viability of underground gas storage in California. The Lab Team was also a key contributor to a national task force report issued last year containing 44 recommendations to reduce chances of similar incidents.

“I think the recommendations we made are fairly comprehensive and will go a long way toward correcting the fact that people weren’t overseeing these wells,” Freifeld said. “Aliso Canyon caused the federal government to sort of wake up and realize that PHMSA has a role to play in the subsurface, not just pipelines.”

Toughest safety rules in the country

At the state level, the Lab Team has been working with the Department of Conservation’s Division of Oil, Gas, and Geothermal Resources (DOGGR) to provide technical expertise for the development of new beefed-up safety regulations for natural gas storage wells in California. Emergency rules were put in place since last year, and proposed permanent regulations are under review.

The proposed rules in California would require at least two containment barriers everywhere in a well, so that two components of well integrity would need to fail simultaneously to allow a leak similar to the 2015 Aliso Canyon incident. “They’re the most stringent rules in the country,” Freifeld said. “They touch on many aspects of safety that weren’t in the rules before. They’re really the gold standard and set a high bar for the national standard.”

Additionally, two members of the original Lab Team (Oldenburg and Berkeley Lab’s Preston Jordan) are lead authors on several sections of the California Council on Science and Technology (CCST) report commissioned by Gov. Jerry Brown to assess and make recommendations on the long-term viability of underground gas storage in California. CCST will deliver the final peer-reviewed report to the California Public Utilities Commission by the end of 2017.

News & Events

Study Sheds Light on Microbial Communities in Earth’s Subsurface2 min read

August 16, 2023

  From the tops of tree canopies to the bottom of groundwater reservoirs, a vast amount of living organisms interact with nonliving components such as rock, water, and soil to shape this area of Earth known as the “critical zone.” Over half of Earth’s microbes are located in the subsurface critical zone, which ranges from…

Carl Steefel Honored in Goldschmidt Session on Reactive Transport2 min read

August 2, 2023

The contributions of Carl Steefel to the reactive transport modeling scientific community were recognized in a session held in his honor at the recent Goldschmidt 2023 conference (Lyon, France). Goldschmidt is the foremost annual, international conference on geochemistry and related subjects, organized by the European Association of Geochemistry and the Geochemical Society. The session was…

DOE Funds Projects to Advance Forest Carbon Dioxide Removal Efforts and Agricultural Soil Carbon Conservation4 min read

August 1, 2023

The DOE Office of Fossil Energy and Carbon Management (FECM) and Office of Technology Transitions (OTT) recently announced $5 million in funding for four projects–two from Berkeley Lab with EESA leadership. The projects selected offer “promising solutions” to the nation’s climate change challenges by helping to reduce greenhouse gas emissions and will “accelerate their deployment…

Quantifying the strength of the land carbon sink3 min read

July 26, 2023

This article first appeared at nature.berkeley.edu/news. The world’s forests, grasslands, and other terrestrial ecosystems have played a substantial role in offsetting human carbon emissions—a capability that UC Berkeley researchers say would be threatened by continued global change. The assessment, published today as a new review paper in Nature Reviews Earth & Environment, presents a comprehensive analysis of…

  • Our People
    • Area Offices
    • Committees
    • Directors
    • Organizational Charts
    • Postdocs
    • Staff Only
    • Search by Expertise
  • Departments
    • Climate Sciences
    • Ecology
    • Geochemistry
    • Geophysics
    • Hydrogeology
  • Research
    • Climate & Ecosystem Sciences Division
    • Energy Geosciences Division
    • Program Domains
      • Programs
    • Projects
  • Contact
    • 510 486 6455
    • eesawebmaster@lbl.gov
    • Our Identity

Earth and Environmental Sciences Area Logo DOE Earth and Environmental Sciences Area Logo UC

A U.S. Department of Energy National Laboratory Managed by the University of California

Lawrence Berkeley National Laboratory · Earth and Environmental Sciences Area · Privacy & Security Notice