General Maintenance

General maintenance on several Railroad Commission IT systems will be performed between 7 p.m. on Friday, May 17, 2019 and 7 a.m. on Saturday, May 18, 2019, and 3 p.m. and 7 p.m. on Sunday, May 19, 2019.  During these times some online systems may be unavailable or experience degraded functionality. We appreciate your patience as we work to improve RRC systems and apologize for any inconvenience.

Washout Factors and Top of Cement

Pursuant to Statewide Rule 13(a)(C) and 13(A)(D), when using a calculation to determine the top of cement, the Railroad Commission of Texas (RRC) uses a baseline washout factor of 20 percent across most of the state, and 30 percent in coastal counties due to higher probabilities of encountering unconsolidated sands in the coastal region. A map showing these factors by county may be found below.

The RRC will also consider lesser washout factors submitted by operators on a case-by-case basis, provided the operator requesting the lesser washout factor submits supporting documentation (see Instruction D on Form W-15). An operator may request approval to apply a lesser washout factor across an area such as a field or county, but each operator’s drilling technology and practices, and supporting washout documentation will be evaluated independently of other operators’ data. Operators requesting a lesser washout factor should submit the request and supporting documentation to the appropriate RRC District Office.

Please click image to enlarge:
Texas washout map

Last Updated: 12/7/2017 9:05:35 AM