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Welcome to the Division of Oil, Gas & Geothermal Resources

The Division oversees the drilling, operation, maintenance, and plugging and abandonment of oil, natural gas, and geothermal wells. The regulatory program emphasizes the wise development of oil, natural gas, and geothermal resources in the state through sound engineering practices that protect the environment, prevent pollution, and ensure public safety.

Geothermal - View geothermal maps, download geothermal forms and publications, access GeoSteam data, and locate geothermal district offices.

Well Stimulation: 2nd Revision of Proposed Regulations Released

On October 9, 2014 the California Department of Conservation (DOC) sent out public notice of the latest version of the proposed regulations for the use of well stimulation in oil and gas production. The public notice marked the beginning of a 15-day public comment period that ends October 24, 2014. The text of the second revision of the proposed regulations can be found here.

Documents associated with the rulemaking process can be found here.

“Well stimulation” practices are defined by Senate Bill 4 (Pavley, Ch 313, Stats of 2013) and include hydraulic fracturing and other treatments that increase the flow of oil and natural gas to wells and then to the surface for recovery. The regulations, which are to go into effect on July 1, 2015, are designed to protect health, safety, and the environment, and supplement existing strong well construction standards. They address a comprehensive list of issues, including testing, monitoring, public notice, and permitting.

Comments regarding proposed revisions to the proposed text of the regulations may be submitted in writing no later than 5:00 p.m. on October 24, 2014. They can be submitted by email to; by FAX to (916) 324-0948; or by mail to Department of Conservation, Attn: Well Stimulation Regulations, 801 K Street MS 24-02, Sacramento, CA 95814.

More background information about the development of the regulations can be found here.

Readopted SB 4 Interim Well Stimulation Regulations Now in Effect

On June 27, 2014, a readoption of the SB 4 interim well stimulation treatment regulations was filed with the Secretary of State. The interim regulations, which first went into effect on January 1, 2014, were adopted by emergency rulemaking to ensure that essential implementing regulations were in effect when Senate Bill 4 became effective. The final text of the readopted SB 4 interim well stimulation treatment regulations and other rulemaking documents can be found here.

DOC's implementation of SB 4 also includes:

  1. Development of an environmental impact report (EIR) by July 1, 2015. Find out more about the EIR development here.
  2. Web-based posting of public notices about well stimulation permits applied for and issued by the Division of Oil, Gas and Geothermal Resources. Find current well stimulation certifications here.

New Well Search Tools Available

Well Finder LogoThe Division of Oil, Gas, and Geothermal Resources has two new online tools that make finding information about California wells more convenient. The Division's Well Finder application shows every known oil and gas well in the state. Users can search for a well in a variety of ways and view production information, the well record, and notice/permit information, including whether the Division has been notified that well stimulation is being used.

Also now online is the Division's Interim Well Stimulation Treatment Notices Index, which allows users to view forms submitted by oil and gas operators to the Division about well stimulation operations, as required by the interim regulations supporting SB 4.


2013 Annual Report Information
(Posted 10/1/2014)

The following information is now available from the 2013 Annual Report of the State Oil & Gas Supervisor:
- Oil and Gas Production by County
- The Financial Statement (fiscal year 2013-2014)
- Delinquent Assessments
These reports are available in accordance with Section 3108, Division 3 of the Public Resources Code, which states: "On or before the first day of October of each year the supervisor shall make public for the benefit of all interested persons a report in writing showing
a) The total amount of oil and gas produced in each county
b) The total cost of the division for the previous fiscal year
c) The total amount of delinquent and uncollected from any assessments or charges levied pursuant to the chapter."

2013 Preliminary Annual Report Released 
(Posted 6/25/2014)

The 2013 Preliminary Annual Report of California Oil, Gas, and Geothermal production is now posted. Click here to view/download.

The Division of Oil, Gas, and Geothermal Resources Issues a New Notice to Operators
(Posted 6/24/2014)

To view the most recent Notice to Operators please click here.

DOGGR Announces New Assessment Rate
(Posted 6/09/2014)

The Oil and Gas Assessment rate for fiscal year 2014-2015 is 28.63572 cents per barrel of oil or 10 Mcf of natural gas produced, an increase of 14.36889 cents from the previous fiscal year. The increase in the assessment is required to implement recent legislative mandates regarding well stimulation.

Governor Brown has appointed the new Oil and Gas Supervisor
(Posted 6/03/2014)

The Division of Oil, Gas, and Geothermal Resources is pleased to welcome the new Oil and Gas Supervisor, Steven Bohlen.

Pre 1977 Production and Injection scanned documents can be found here.
(Posted 5/22/2014)

The Division of Oil, Gas, and Geothermal Resources Issues a New Notice to Operators
(Posted 5/15/2014)

To view the most recent Notice to Operators please click here.

SB4 Interim Well Stimulation Treatment Regulations Compliance Workshop
(Posted 4/14/2014)

With the SB 4 emergency regulations now in-place, the Division of Oil, Gas, and Geothermal Resources (Division) is planning a workshop for industry representatives regarding the SB 4 Interim Well Stimulation Treatment Regulations.

This workshop will be held in Long Beach:

Date: Tuesday, April 22, 2014 POSTPONED
Time: 9:00 a.m. - 1:00 p.m.
Address: TBD

The next workshop will be held in the city of Long Beach.  When the workshop date is set, the detailed location information will be posted. 

The purpose of this workshop is for the Division to provide critical guidance to operators, and respond to questions regarding the interim regulations, their implementation procedures, and how to perform well stimulation treatments in compliance with the interim regulations in 2014.

Representatives of the State Water Resources Control Board will also be present to discuss and field questions about their role and required concurrence pursuant to the SB 4 mandates in 2014.

If you have any questions regarding this workshop, please contact Vincent Agusiegbe at (916) 323-0425 or

2013 Outstanding Field and Lease Facility Maintenance Award

(Posted 4/9/2014) (Updated 8/5/2014)

The Division of Oil, Gas and, Geothermal Resources (Division) is pleased to announce the following Outstanding Field and Lease Facility Maintenance Award recipients for 2013:

  1. Santa Maria Energy, LLC, Orcutt Oil Field, "Careaga" lease
  2. Ample Resources, Inc., Temescal Oil Field, "Temescal" lease
  3. Mammoth-Pacific, L.P., Casa Diablo Geothermal Field, "MPI" lease

The Division congratulates these operators on being selected for the 2013 Lease Awards. To see pictures of award winners and for additional Lease Award information, please click here.

Lease Award Nominations
(Posted 2/19/2014)

The applications for the 2014 lease award are due October 1.  DOGGR management will still select the award winners, but will use more stringent eligibility and judging criteria.

Click here for revised program information and application materials.

DOC Sends Out Notice to Operators Regarding New Assessment Payee and Mailing Address
(Posted 1/30/2014)

The California Department of Conservation sent out a Notice to Operators (NTO) with updated payee and mailing address information . The NTO can be found here.

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