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                                                                      EXHIBIT 21


                            NABORS INDUSTRIES, INC.
               List of Subsidiaries and Certain Other Affiliates

                                                  
<TABLE>                                           
Subsidiary or Affiliate                           Jurisdiction of Incorporation
-----------------------                           -----------------------------
<S>                                               <C>
Activo Rental, Inc.                                        Delaware
Andean Rental, Inc.                                        Delaware
AIC LLC. (50%)                                             Alaska
ARRH, Inc.                                                 Delaware
Beaufort Marine J.V. (50%)                                 Alaska
Canrig Drilling Technology Ltd.                            Alberta
Canrig Drilling Technology Ltd.                            Delaware
Crest Service Company                                      Delaware
Delta Acquisition Corp.                                    Texas
Delta Drilling Company                                     Texas
Exeter Drilling Company                                    Nevada
Exeter International, Inc.                                 Delaware
J.W. Gibson Well Service Company                           Delaware
Hemisphere Oil Services, Inc.                              Delaware
Intrafield Oil Services Limited                            Barbados
Kodiak Oilfield Haulers, Inc.                              Alaska
Loffland Brothers Company of Canada                        Delaware
Loffland Brothers de Venezuela, C.A.                       Venezuela
Loffland Brothers North Sea, Inc.                          Nevada
Maple Leaf Financial Services, Inc.                        Delaware
Nabors Acquisition Corp. III                               Delaware
Nabors Alaska Drilling, Inc.                               Alaska
Nabors Alaska Services Corp.                               Delaware
Nabors Canada Limited                                      Delaware
Nabors Capital, Ltd.                                       Delaware
Nabors Corporate Services, Inc.                            Delaware
Nabors Drilling & Energy Services UK Limited               United Kingdom
Nabors Drilling International Limited                      Delaware
Nabors Drilling International Limited                      Bermuda
Nabors Drilling Limited                                    Canada
Nabors Drilling USA, Inc.                                  Delaware
Nabors Equipment, Inc.                                     Delaware
Nabors Eurasia, Inc.                                       Delaware
Nabors Europe Limited                                      United Kingdom
Nabors Gull Corp.                                          Delaware
Nabors Incorporated Ecuador                                Ecuador
Nabors International, Inc.                                 Delaware
Nabors Kazakhstan Company                                  Kazakhstan
Nabors Offshore Drilling, Inc.                             Delaware
Nabors Oilfield Equipment, Inc.                            Delaware
Nabors Russia, Inc.                                        Delaware
Nabors Shipping Company                                    Delaware
Nabors Yemen, Ltd.                                         Delaware
</TABLE>
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<TABLE>
Subsidiary or Affiliate                                 Jurisdiction of Incorporation
-----------------------                                 -----------------------------
<S>                                                             <C>            
Nabors Yemen Transportation Services, Ltd.                      Delaware       
Nadrico Saudi Limited (45%)                                     Saudi Arabia   
Peak Oilfield Services Company (50%)                            Alaska         
Peak-Ploss Industries (49 1/2%)                                 Texas          
Peak USA Energy Services, Ltd.  (Ltd. Partnership)              Texas          
Petroleum Resources I, Inc.                                     Delaware       
Red Deer Financial Services LLC                                 Delaware       
SOL Insurance Limited                                           Bermuda        
Solefin, Inc.                                                   Nevada         
Sovereign Oilfield, Inc.                                        Delaware       
Sovereign Supply Company                                        Delaware       
Sundowner Offshore International (Bermuda) Limited              Bermuda        
Sundowner Offshore Australia (50%)                              Australia      
Sundowner Offshore Services, Inc.                               Nevada         
Sundowner Trinidad, Inc.                                        Delaware       
Sunset P&A Services                                             Nevada         
Thistle Filtration Services Ltd.                                United Kingdom 
Thistle Well Services Limited                                   United Kingdom 
Thistle Wireline Services Ltd.                                  United Kingdom 
West Range Leasing, Inc.                                        Delaware       
</TABLE>