EX-21 6 a20231231ex21.htm EX-21
Exhibit 21
TETRA Technologies, Inc.
List of Subsidiaries or Other Related Entities
December 31, 2023

Name | Jurisdiction
Compressco, Inc. | Delaware
Compressco Testing, L.L.C. | Oklahoma
Compressco Field Services, LLC | Oklahoma
TETRA Applied Holding Company | Delaware
TETRA Brine Leaseco LLC | Delaware
TETRA Bromine Project LLC | Delaware
TETRA Evergreen Unit LLC | Delaware
TETRA Production Testing Holding LLC | Delaware
T-Production Testing, LLC | Texas
TETRA Production Testing Services, LLC | Delaware
TETRA Financial Services, Inc. | Delaware
TETRA-Hamilton Frac Water Services, LLC | Oklahoma
TETRA International Incorporated | Delaware
TETRA Middle East for Oil & Gas Services LLC | Saudi Arabia
TETRA de Argentina SRL | Argentina
TETRA Foreign Investments, LLC | Delaware
TETRA International Holdings, B.V. | Netherlands
T-International Holdings C.V. | Netherlands
TETRA Netherlands, B.V. | Netherlands
TETRA Oilfield Services Ghana Limited | Ghana
TETRA Oilfield Services (Holding) Limited | Ghana
TETRA Chemicals Europe AB | Sweden
TETRA Chemicals Europe OY | Finland
TETRA Egypt (LLC) | Egypt
TNBV Oilfield Services Ltd. | British Virgin Islands
Well TETRA for Oil Services LLC | Iraq
TETRA Investments Company U.K. Limited | United Kingdom
Optima Solutions Holdings Limited | United Kingdom
Optima Solutions U.K. Limited | United Kingdom
TETRA Technologies de Mexico, S.A. de C.V. | Mexico
TETRA Technologies do Brasil, Limitada | Brazil
TETRA Technologies U.K. Limited | United Kingdom
Optima Solutions Malaysia SDN BHD | Malaysia
TETRA Technologies Nigeria Limited | Nigeria
Tetra-Medit Oil Services | Libya
TETRA Madeira, Unipessoal Lda | Portugal
TETRA (Thailand) Limited | Thailand
TETRA Yemen for Oilfield Services Co., Ltd. | Yemen
Greywolf Energy Services Ltd. | Canada
TETRA International Holdings Inc. | Delaware
TETRA UK Holdings Limited | United Kingdom
TETRA Process Services, L.C. | Texas
TETRA Micronutrients, Inc. | Texas