State Oil and Gas Well Plug and Abandonments

An oil and gas state abandonment is the plugging and abandonment (permanent closure and sealing) of an orphan or deserted (or potentially deserted) oil and gas well through a state contract..

Visit the Project Plug Page: Learn about regional work on Phase One projects

View the CalGEM Orphaned Well Prioritization Map:

Project Specific Pages

HVI Cat Canyon State Abandonment

AllenCo Oil Production Facility

Latest Actions/Announcements

Subscribe to the Oil & Gas Outreach listserv to receive updates for public meetings and other announcements.

2025 Updates

Project PLUG Work Updates: Kern County

September 10, 2025: Initial Study & Mitigated Negative Declaration

The INITIAL STUDY/MITIGATED NEGATIVE DECLARATION for the permanent sealing of Orphan Wells in Kern County has been released for Public Review. The project involves the State of California's plugging and abandoning (permanent sealing) of eighteen (18) orphan wells in Kern County, California. One well is not within an oil field, while the rest are in the Fruitvale (12), Mountain View (3), Edison (1), and Semitropic (1) Oil Fields

View the Mitegated Negative Declaration - Kern County Project (PDF)

Project PLUG Work Updates: West Hills (Canoga Park)

September 10, 2025: West Hills Community Meeting – Plugging & Sealing Wells

An in-person community meeting will be held September 10, 2025, from 6:00 to 7:30 pm for residents of the West Hills area to learn about upcoming work on 6 oil wells that will be plugged and sealed in the neighborhood. Please submit your questions and/or RSVP here: https://forms.office.com/g/J9zZDCg3q9

This project Community Health, Safety, and Notification Plan provides community members with essential information about work schedules, safety measures, and emergency contacts. Click the link below to access the complete plan.

West Hills / Canoga Park - Community Health Safety Notification Plan 09042025

August 11, 2025: The INITIAL STUDY/MITIGATED NEGATIVE DECLARATION for the Permanent Sealing of Orphan Wells in Canoga Park has been released for Public Review. The project consists of the State of California's plugging and abandoning (P&A) of six (6) orphan wells in the inactive CalGEM-designated Canoga Park oil field (private land, no longer an active oil field), within unincorporated Los Angeles County. A portion of the Project site (where access road improvements would occur) is located within the City of Los Angeles. PDF Linked

Project PLUG Work Updates: AllenCo

August 1, 2025: To date, the Department of Conservation (DOC) and contractor, Driltek has plugged 11 of the 21 “Saint James” drill site wells. Other wells have had some partial abandonment completed, but these wells are still undergoing observation before completing those abandonments. The project is expected to be completed by second quarter of 2026 calendar year.

State Oil and Gas Well Abandonment Expenditure Plan - Phase 3 (Planning Phase)

August 2025: CalGEM is currently in the process of creating a Phase 3 set of wells for plugging. These wells are projected to start at the completion of Phase 2.

Project PLUG Work Updates: Orange County

August 28, 2025: The INITIAL STUDY/MITIGATED NEGATIVE DECLARATION for the Permanent Sealing of an Orphan Well in Orange County has been released for Public Review. The project involves the State of California's plugging and abandoning (permanent sealing) of one (1) orphan well on the eastern side of Orange County, California. The well, identified as Well #1 (API^[1]: 0405907151), is in the Brea-Olinda Oil Field north of Brea, California.

[1] API refers to the unique well identification number established by the American Petroleum Institute.

Mitegated Negative Declaration - Orange County Project (PDF)

2024 Updates

Project PLUG Work Updates: AllenCo

December 12, 2024: Starting in late December 2024, the Department of Conservation (DOC) and contractor, Driltek, will permanently close 20 oil and gas wells at the Allen Co Energy "Saint James" drill site in Los Angeles. This plan provides community members with essential information about work schedules, safety measures, and emergency contacts. After completion, all oil and gas operation hazards will be removed from the site.

Community Health, Safety, and Notification Plan (PDF)

Plan de Salud, Seguridad y Notificación para la Comunidad (PDF)

Flyer - AllenCo Work Site Updates

Folleto - Actualizaciones del Sitio de Trabajo en AllenCo

State Oil and Gas Well Abandonment Expenditure Plan - Phase 2

October 2024: CalGEM released the final Phase 2 State Abandonment Expenditure Plan on Thursday, October 14, 2024. The plan includes the second phase of orphan wells proposed for permanent plugging and sealing using state and federal funds. All public comments received were considered for incorporation into the plan.

Phase 2 State Abandonment Expenditure Plan FINAL (PDF)

Project PLUG Work Updates: AllenCo

October 7, 2024:The Department of Conservation held a public Zoom/In-Person hybrid meeting on the work to permanently plug and seal oil wells at the AllenCo site.

Plug & Abandonment Hybrid Meeting - LA County PowerPoint (PDF)

September 24, 2024

The Department of Conservation held a webinar to provide the public with an update on the project timeline. This project was initially scheduled to begin this summer. Unfortunately, additional documentation is necessary to meet federal approval requirements, which has pushed out the timeline. Based on the current projection, work is anticipated to begin in the 4th quarter of 2024 (October-December).

Public Webinar on State Abandonment Adjusted Timelines (PDF)

Updates on State Abandonment Adjusted Timelines September 24, 2024 (YouTube)

State Oil and Gas Well Abandonment Expenditure Plan - Phase 2

July 16, 2024: CalGEM released its Phase 2 State Abandonment Draft Expenditure Plan on Tuesday, July 16, 2024, at 5:30 p.m. during a virtual public meeting. The draft plan includes the second phase of orphan wells proposed for permanent plugging and sealing using state and federal funds. The 45-day public comment period ended August 19, 2024. All public comments received will be considered for incorporation into the plan.

Phase 2 State Abandonment DRAFT Expenditure Plan (PDF)

Abandonment Projects

Oxnard and AllenCo meetings: Public meetings were held mid-June in Oxnard and Los Angeles (AllenCo) to answer questions or concerns. The meetings were held in English and in Spanish.

Oxnard Community Meeting, June 18, 2024 - PowerPoint (PDF)

Oxnard Community Meeting--Flyer (PDF)

Reunion Comunitaria de Oxnard, Martes, Junio 18, 2024 - PowerPoint (PDF)

Reunion Comunitaria de Osnard--Folleto (PDF)

Los Angeles Community Meeting, June 24, 2024 - PowerPoint (PDF)

Los Angeles Community Meeting--Flyer (PDF)

Reunion Comunitariaen Los Angeles, Lunes, Junio 24, 2024 - PowerPoint (PDF)

Reunion Comunitariaen Los Angeles--Folleto (PDF)

Kern and Arvin Community Meetings: Wells in the Kern County have been prioritized to be plugged and permanently sealed. Public meetings were held mid-May in Bakersfield and Arvin to answer any questions or concerns. Contracts for this work have been completed and work in the Arvin area can now begin.
Contact information: (916) 214-5731 or sarah.rubin@conservation.ca.gov

Kern Community Meeting, May 14, 2024 - PowerPoint (PDF)

Kern Community Meeting May 14, 2024- Flyer

Folleto en español Spanish Version

Arvin Community Meeting, May 15, 2024 Eng/Span - PowerPoint (PDF)

Arvin Community Meeting May 15, 2024- Flyer

Folleto en español Spanish Version

HVI Cat Canyon State Abandonment

AllenCo Oil Production Facility

2023 Updates

Requests for Qualifications

December 14, 2023: The submission period for qualified firms to apply for oil well plug and abandonment and various related services within the counties of Kern, Fresno, Ventura, and Simi Valley located in the northern portion of Los Angeles County has ended.

November 30, 2023: The submission period for qualified firms to apply for oil well plug and abandonment and various related services within the counties of Los Angeles, Orange, San Bernadino, Riverside, San Diego, Inyo, and Imperial has ended.

State Oil and Gas Well Abandonment Expenditure Plan

October 17, 2023: CalGEM released its final State Oil and Gas Well Abandonment Expenditure plan on Tuesday, October 17, at 5:30 p.m. during a virtual public meeting. The plan includes the Department’s initial list of orphan wells it will permanently plug and seal using state and federal funds.

Final State Abandonment Expenditure Plan (PDF)

Plan final de gastos para el abandono del Estado (PDF) (próxima)

State Oil and Gas Well Abandonment Draft Expenditure Plan Summary of Comments, Questions, and Responses (PDF)

Resumen de los Comentarios, Preguntas, Respuestos del Plan final de gastos para el abandono del Estado (PDF) (próxima)

Methane Task Force October 17 Public Meeting PowerPoint (PDF)
Video Recording of October 17 Public Meeting (YouTube)

July 18, 2023: CalGEM released its State Abandonment Draft Expenditure Plan on Tuesday, July 18, 2023, at 5:30 p.m. during a virtual public meeting. The draft plan includes the initial list of orphan wells proposed for permanent plugging and sealing using state and federal funds. The release began a 45-day public comment period that ended on October 4, 2023. All comments received will be considered for incorporation into the regulations.

State Abandonment Draft Expenditure Plan (PDF)

plan de gastos para el abandono del Estado (PDF)

Resources & Information

Process for Safely Plugging and Abandoning Wells

A well is plugged by placing cement in the wellbore or casing at certain intervals, as specified in California laws or regulations. The purpose of the cement is to seal the well-bore or casing and prevent fluid from migrating between underground rock layers. Cement plugs are required to be placed across the oil or gas reservoir (zone plug), across the base-of-fresh-water (BFW plug), and at the surface (surface plug). Other cement plugs may be required at the bottom of a string of open casing (shoe plug), on top of tools that may become stuck down hole (junk plug), on top of cut casing (stub plug), or anywhere else where a cement plug may be needed. Also, the hole is filled with drilling mud to help prevent the migration of fluids.

Useful reference: What are Orphan Wells? ¿Que Son Pozos Huérfanos?

State Abandonment Funding

There are four sources of funds used for state abandonments:

The Oil, Gas, and Geothermal Administrative Fund (OGGA) is funded by operator assessment fees. Starting with the 2021/2022 fiscal year, expenditures from this fund to plug and abandon wells are capped at $5 million per year.
The Hazardous and Idle-Deserted Well Abatement Fund (HIDWAF) is funded by operator idle well fees and continuously appropriated to CalGEM to plug and abandon wells to mitigate a hazardous or potentially hazardous condition.
In fiscal years 2022/2023 and 2023/2024, $50 million in California state General Fund dollars are appropriated to CalGEM to plug and abandon orphan and deserted wells – for a total of $100 million dollars over the two years.
In August 2022, California was awarded $25 million in initial grant funding from the federal government's orphan well program authorized in the bipartisan Infrastructure Investment and Jobs Act. California is eligible for potentially an additional $140 million in future grants.

State Abandonment Authority

The Public Resources Code (PRC) provides various presumptions and circumstances under which CalGEM may find that a well has been deserted. If CalGEM determines a well has been idle-deserted, then CalGEM may order the plugging and abandonment of the well. If an operator fails to rebut such presumptions and fails to commence the ordered work, then CalGEM may undertake the plugging and abandonment of the well. CalGEM's options for funding the plugging and abandonment differs depending upon the solvency of the operator.

CalGEM may find a well to be deserted, and therefore order the well plugged and abandoned, based upon credible evidence. Credible evidence that a well has been deserted includes, but is not limited to, the operational history of the well, the response or lack of response from the operator to inquiries and requests from CalGEM, the extent of compliance by the operator, and other actions of the operator with regards to the well. If such evidence exists, CalGEM may order the plugging and abandonment of the well.
CalGEM may order to be carried out or undertake the abandonment of a well CalGEM determines to be a hazardous or an idle-deserted well under PRC section 3255. A hazardous well is a “well that is a potential danger to life, health, or natural resources and for which there is no operator responsible for its plugging and abandonment." To order or undertake the abandonment of a well under PRC section 3255, a well must not only be deserted - it must also be orphan. CalGEM must assess the financial resources of the operator and determine there is no operator with the financial resources to fully cover the cost of plugging and abandoning the well.

Key Facts

California's crude oil production has declined steadily in the last few decades, increasing the number of nonproductive, or “idle", wells throughout California.
CalGEM maintains an idle well management regime that includes the most rigorous testing standards in the country and collects fees that can be used to fund the plugging and abandonment of deserted and orphan wells—wells that likely do not have a responsible, solvent operator to appropriately plug and abandon the well, leaving their proper abandonment to the State.
Currently there are over 37,000 known idle wells in California, all of which will eventually come to their end of life, and their operators will be required to plug the wells and decommission associated production facilities.
The state has also documented over 17,000 wells that have been idle for over 15 years and over 5,000 wells that are orphan, deserted, or potentially deserted wells. Left un-remediated, these wells and facilities can contaminate waterways and soil, serve as a source of climate and air pollutants, and can present physical hazards to people and wildlife.
CalGEM may determine the status of a well as deserted based upon specific criteria laid out in the PRC. Evidence of desertion under the PRC includes, but is not limited to, failure to pay idle well fees, the operational history of the well or production facility, the response or lack of response of the operator to inquiries and requests from CalGEM, the extent of compliance by the operator with the requirements, and other actions.

For Contractors

CalGEM Oil and Gas Well Plug and Abandonment Public Works Contracts

For contractors performing public works plugging and abandonment services, CalGEM has provided various resources and documents to help ensure compliance with applicable laws, regulations, and other requirements.

State Oil and Gas Well Plug and Abandonments

Visit the Project Plu​​g​ Page​: Learn about regional work on Phase One projects

View the CalGEM Orphaned Well Prioritization Map: ​

​

Project Specific Pages​

Latest Actions/Announcements

Project PLUG Work Updates: AllenCo​

Project PLUG Work Updates: Orange County

Resources & Information

Visit the Project Plug Page: Learn about regional work on Phase One projects

View the CalGEM Orphaned Well Prioritization Map:

Project Specific Pages

Project PLUG Work Updates: AllenCo