Exhibit 21.1

Subsidiaries of Newpark Resources, Inc.

December 31, 2021

1	AVA ALGERIE E.U.R.L.
2	AVA INTERNATIONAL DRILLING FLUIDS LTD.
3	AVA UKRAINE, LLC
4	CLEANSORB LIMITED
5	DBM SERVICIOS, S.A. de C.V.
6	DURA-BASE DE MEXICO S.A. DE C.V.
7	DURA-BASE NEVADA, INC.
8	EXCALIBAR MINERALS LLC
9	NEWPARK ASIA SDN BHD
10	NEWPARK AUSTRALIA PTY LTD
11	NEWPARK BAHRAIN W.L.L.
12	NEWPARK CANADA, INC.
13	NEWPARK CHILE LIMITADA
14	NEWPARK DRILLING FLUIDS (AUSTRALIA) LIMITED
15	NEWPARK DRILLING FLUIDS (NEW ZEALAND) LIMITED
16	NEWPARK DRILLING FLUIDS (THAILAND) LIMITED
17	NEWPARK DRILLING FLUIDS AFRICA S.A.R.L.
18	NEWPARK DRILLING FLUIDS ASIA PACIFIC LLC
19	NEWPARK DRILLING FLUIDS CYPRUS LTD
20	NEWPARK DRILLING FLUIDS do BRASIL TRATAMENTO de FLUIDOS LTDA.
21	NEWPARK DRILLING FLUIDS EASTERN EUROPE S.R.L.
22	NEWPARK DRILLING FLUIDS GABON SUARL
23	NEWPARK DRILLING FLUIDS GERMANY GMBH
24	NEWPARK DRILLING FLUIDS GULF LLC
25	NEWPARK DRILLING FLUIDS GUYANA INC
26	NEWPARK DRILLING FLUIDS HOLDINGS LLC
27	NEWPARK DRILLING FLUIDS INDIA PRIVATE LIMITED
28	NEWPARK DRILLING FLUIDS INTERNATIONAL LLC
29	NEWPARK DRILLING FLUIDS KAZAKHSTAN LIMITED LIABILITY PARTNERSHIP
30	NEWPARK DRILLING FLUIDS LLC
31	NEWPARK DRILLING FLUIDS MIDDLE EAST LIMITED
32	NEWPARK DRILLING FLUIDS PANNONIA KFT
33	NEWPARK DRILLING FLUIDS PERSONNEL SERVICES LLC
34	NEWPARK DRILLING FLUIDS S.P.A.
35	NEWPARK DRILLING FLUIDS TUNISIA S.A.R.L.
36	NEWPARK DRILLINGS FLUIDS TRINIDAD AND TOBAGO UNLTD
37	NEWPARK ENVIRONMENTAL WATER SOLUTIONS LLC
38	NEWPARK HOLDINGS ALBERTA INC
39	NEWPARK HUNGARY HOLDCO LLC
40	NEWPARK INDUSTRIAL BLENDING SOLUTIONS LLC

41	NEWPARK INTERNATIONAL UK LIMITED
42	NEWPARK LATIN AMERICA LLC
43	NEWPARK MATS & INTEGRATED SERVICES LLC
44	NEWPARK MIDDLE EAST TRADING, SERVICES AND MAINTENANCE
45	NEWPARK MONTENEGRO D.O.O.
46	NEWPARK SAUDI ARABIA LIMITED
47	NEWPARK TEXAS, L.L.C.
48	NEWPARK URUGUAY S.R.L.
49	PRAGMATIC DRILLING FLUIDS ADDITIVES LTD
50	PRAGMATIC PERFORMANCE CHEMICALS FZE
51	PT RHEOCHEM NEWPARK FLUID SYSTEMS INDONESIA
52	TECHNOLOGY AND ENGINEERING FOR DRILLING FLUIDS JSC
53	TERRAFIRMA ROADWAYS LIMITED