According to data from Westwood’s RigLogix, the global offshore rig fleet size ended 2023 at 728 jackups, semisubs and drillships, down by a net one rig from the end of 2022. This is a considerable slowdown in supply shrinkage over the past several years.
[pdf] The DTH drilling rig (down-the-hole drilling machine) is a kind of drilling machine, which is mainly used for drilling in rock formations. The down-the-hole drilling rig uses the impactor and the DTH drill bit.
[pdf] A drilling riser is a conduit that provides a temporary extension of a to a surface drilling facility. Drilling risers are categorised into two types: marine drilling risers used with subsea (BOP) and generally used by floating drilling vessels; and tie-back drilling risers used with a surface BOP and generally deployed from or very stable floating platfor.
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