combination rig

combination rig

[‚käm·bə′nā·shən ′rig]
(petroleum engineering)
A drilling rig that is fitted with components for both rotary and cable-tool drilling.
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bore for hp by dth/rotary/ combination rig, including supply and installation of hand pump sets and other allied works under panchayat samiti jaisalmer
The combination rig will initially be dedicated to exploration drilling while the other rigs will continue infill drilling at least through the end of July.
With the longest round trip taking 40 minutes, that meant that the combination rigs, known as a "truck and pup," were leaving the site at less than two-minute intervals all day long.