Nine Energy Service, Inc. - FORM 10-K - EX-21.1 - LIST OF SUBSIDIARIES OF NINE ENERGY SERVICE, INC.

file	filename
EX-31.1 - CERTIFICATION BY CHIEF EXECUTIVE OFFICER PURSUANT TO RULE 13A-14(A) AND 15D-14(A - Nine Energy Service, Inc.	nine-ex311_43.htm
EX-32.2 - CERTIFICATIONS BY CHIEF FINANCIAL OFFICER PURSUANT TO TITLE 18 U.S.C. SECTION 13 - Nine Energy Service, Inc.	nine-ex322_46.htm
EX-32.1 - CERTIFICATIONS BY CHIEF EXECUTIVE OFFICER PURSUANT TO TITLE 18 U.S.C. SECTION 13 - Nine Energy Service, Inc.	nine-ex321_45.htm
EX-31.2 - CERTIFICATION BY CHIEF FINANCIAL OFFICER PURSUANT TO RULE 13A-14(A) AND 15D-14(A - Nine Energy Service, Inc.	nine-ex312_44.htm
EX-23.2 - CONSENT OF BDO USA, LLP - Nine Energy Service, Inc.	nine-ex232_42.htm
EX-23.1 - CONSENT OF PRICEWATERHOUSECOOPERS LLP - Nine Energy Service, Inc.	nine-ex231_41.htm
10-K - 10-K - Nine Energy Service, Inc.	nine-10k_20171231.htm

EXHIBIT 21.1

List of Subsidiaries of Nine Energy Service, Inc.


Name		Jurisdiction

Beckman Production Services, Inc.		Delaware

Beckman Production Services, Inc.		Michigan

Big Lake Service, LLC		Delaware

Big Lake Services Holdco, LLC		Delaware

CDK Intermediate, LLC		Delaware

CDK Perforating, LLC		Texas

CDK Perforating Holdings, Inc.		Delaware

Crest Pumping Technologies, LLC		Delaware

Dak-Tana Wireline, LLC		Delaware

First Call Well Service, LLC		Oklahoma

J & R Well Service, LLC		Michigan

Nine Downhole Technologies, LLC		Delaware

Nine Energy Canada Inc.		Alberta, Canada

Nine Energy Service, LLC		Delaware

Northern Production Company, LLC		Wyoming

Northern States Completions, Inc.		Delaware

Peak Pressure Control, LLC		Texas

R & S Well Service, Inc.		Wyoming

RedZone Coil Tubing, LLC		Texas

RedZone Holdco, LLC		Delaware

SJL Well Service, LLC		Oklahoma

Nine Energy Service, Inc. - FORM 10-K - EX-21.1 - LIST OF SUBSIDIARIES OF NINE ENERGY SERVICE, INC. - March 29, 2018