WellSTAR logo

WellSTAR is the Well Statewide Tracking and Reporting System. It is a comprehensive electronic database under ongoing development to better handle data collection and analysis, streamline operations and processes, and adhere to requirements in Oil and Gas Production: Water Use: Reporting, Senate Bill 1281 (2014) and Oil and Gas: Well Stimulation, Senate Bill 4 (2013), as well as other state and federal laws. 

WellSTAR is one of several objectives in the Division of Oil, Gas, and Geothermal Resources' Renewal Plan to strengthen and improve the state’s oversight of oil and gas production in California while ensuring public safety and environmental protections.

Sespe Oil Field Pumpjacks



WellSTAR is a dynamic application. It allows oil and gas operators to submit required information in a standardized format and it automatically populates repeatable data. For example, in spring 2019, documentation of well stimulation treatment, underground gas storage data, and underground injection control EPA reports became operational.

Prior versions of WellSTAR enabled reporting functions related to compliance, incidents, complaints, construction site well reviews, e-permitting, production reporting, underground injection control data, and facility management.

An integral component of WellSTAR is the Well Finder application which enables a user to search for individual wells. Well Finder also presents maps and other information about oil and gas wells and their associated facilities throughout California. An operator can search by address, oil and gas field names, latitude/longitude, unique well number (also known as “API”) or Public Land Survey System (PLSS) section/township/range.

Future functionality to WellSTAR will make most well operational data and documents available (with the exception of confidential wells and information precluded for legal reasons) to the public. Public users will also have the option of submitting a complaint about a well operation.


For Operators:


For up-to-date project information, read and subscribe to the WellSTAR Bulletin:

​Subscribe​​ to the WellSTAR Bulletin

 WellSTAR for Operators

WellSTAR Application Access

The resources below will help support access to the WellSTAR application. Click the link below to access WellSTAR.

Access and log in to the WellSTAR Application for Operators
  • WellSTAR Operator Administrator Form
  • If you are unable to access the WellSTAR application, and are the Operator point of contact for WellSTAR, please complete the WellSTAR Operator Administrator Form and submit to WellSTAR@conservation.ca.gov.

  • For technical assistance with WellSTAR, please email the Service Desk at ServiceDeskMail@conservation.ca.gov, using this Service Desk Email Template when submitting your request for technical assistance.

    Frequently Asked Questions (FAQs)


    New to WellSTAR? Need help with something? Click the link below to access the WellSTAR Computer Based Training (CBT) and supporting materials.

  • WellSTAR Training Materials for Operators

  •  Presentations

  • Operator Workshop: June 2019 (PDF)
  • Operator Workshop: March 2019 (PDF)
  • Operator Workshop: January 2019 (PDF)
  • Operator Workshop: March 2018 (PDF)
  • WellSTAR Project Update: January 23, 2018 (PDF)
  • Operator Workshop: September 2017 ( PDF)
  • Operator Workshop: January/February 2017 (PDF)

     Oil and Gas Forms for Operators

    Click on the link below to access Oil and Gas Forms.

  • Oil and Gas Forms for Operators

  •  Notice to Operators (NTO)

  • NTO Index