213112  Support Activities for Oil and Gas Operations 

This U.S. industry comprises establishments primarily engaged in
performing oil and gas field services (except contract drilling) for
others, on a contract or fee basis. Services included are exploration
(except geophysical surveying and mapping); excavating slush pits and
cellars; grading and building foundations at well locations; well
surveying; running, cutting, and pulling casings, tubes, and rods;
cementing wells; shooting wells; perforating well casings; acidizing
and chemically treating wells; and cleaning out, bailing, and swabbing
wells.

The data published with NAICS code 213112 include the following
SIC industries:

1382 Oil and gas field exploration services (pt)                               
1389 Oil and gas field services, n.e.c.