Exhibit 21.1

Subsidiaries of Quintana Energy Services Inc.

 

Entity

  

State of Formation

Quintana Energy Services LLC    Delaware
QES Directional Drilling, LLC    Delaware
Q Consolidated Well Services, LLC    Delaware
QES Pressure Control LLC    Oklahoma
QES Wireline LLC    Texas
QES Intermediate LLC    Delaware
QES Management LLC    Delaware
CIS-Oklahoma, LLC    Delaware
QES Pressure Pumping LLC    Delaware
Oklahoma Oilwell Cementing Company    Oklahoma
Consolidated OWS Management, Inc.    Delaware
Centerline Trucking, LLC    Delaware
Twister Drilling Tools, LLC    Delaware
Q Directional MGMT, Inc.    Delaware