​Well Maintenance and Cleanout History

​​​​​​​​​​​​Within 60 days of completing an operation on a well that involves emplacing fluid containing acid in the well or involves application of pressure to the formation that exceeds formation pore pressure, but IS NOT a well stimulation treatment, an operator is required to submit information about the operation to the Geologic Energy Management Division (CalGEM)​.


On July 18, 2022, CalGEM released a Request for Information (RFI) to seek stakeholder input on opportunities to strengthen regulations related to acid treatment data reporting. The comment period will be op​en from July 18, 2022  - August 31, 2022. Information gathered will guide future actions, which may include building upon the existing regulatory framework for well maintenance to address issues identified by CalGEM and other key stakeholders related to acid treatment reporting. ​

Well Maintenance forms must be submitted through the operator-access-only WellSTAR electronic database.

As of December 17, 2019, well maintenance operational data can be viewed in WellSTAR.

​Additionally, all ​Well Maintenance Determination Requests and Aggregate Well Maintenance plans must be submitted though the operator-access-only​ WellSTAR  ​​​Plan Submission form.